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Item Manejo do mofo branco (Sclerotinia sclerotiorum L.) em tomateiro industrial(Universidade Federal de Goiás, 2011-08-30) AGUIAR, Renata Alves de; CUNHA, Marcos Gomes da; http://lattes.cnpq.br/2006008625763742Brazil ranks ninth in the world production of tomato (Solanum esculentum L.), while much of this production is destined for processing industries. The added value obtained with the fruit processing endorses this species as the vegetable with the greatest economic importance in the Cerrado region of Brazil, where the State of Goiás stands out as the largest producer. Despite the favorable soil and climatic conditions, several factors have hindered its production, especially diseases caused by soilborne pathogens, which had increased their importance with the adoption of intensive production systems. Among them, white mold caused by Sclerotinia sclerotiorum (Lib.) De Bary has caused serious problems in infested soils, under mild temperatures and high humidity. Concerning the large number of S. sclerotiorum hosts and the lack of resistant hybrids, chemical control has been chosen as the most common method for disease management, despite not always efficient, due to the difficulties to reach the pathogen s resistance structures in the soil. Therefore, the study aimed to evaluate the disease escape on different tomato hybrids, to compare the effectiveness of synthetic fungicides mixed or not to potassium silicate; evaluate the biological control of white mold, with different commercial products based on Trichoderma spp. associated or not to a synthetic fungicide, and to evaluate the biological control with or without chemical fungicides, applied through chemigation. Tests were carried out in soil of medium texture at Unilever experimental farm, in Goiânia (GO), from 2008 to 2010. The experimental area was previously infested with sclerotia of the pathogen, obtained in pre-cleaning wastes of soybean. Drip irrigation was used in all tests, which had 4 plants m-1 with 1.5 meters between rows. The hybrids used in the disease escape tests were: U232, U2006 (Unilever), H9992, H7155 (Heinz), N877 (Nunhems) and H108 (Hypeel). In all other essays, Heinz 9780 was the chosen hybrid. All experiments were conducted under randomized blocks design with three replications, and had weekly assessments of disease incidence to estimate the area under the disease progress curve (AUDPC). We also evaluated the productivity and its components, as well as acidity, soluble solids content and industrial yield. The results were submitted to ANOVA and to the Scott Knott or Tukey tests at 5%, using the statistical program Sisvar. It was shown that: Hybrids H9992 and Hp108 had lower AUDPCs, suggesting a partial escape to white mold and that hybrid choice can be added to the disease management cultural practices, despite there was no difference on their yield. In 2008, under higher disease pressure, potassium silicate in plots without fungicide application showed disease incidence, AUDPC, productivity and industrial yield equivalent to treatments with fluazinam and procymidone, and superior to results with benzalkonium chloride. There was no difference between treatments with Trichoderma spp. associated or not to fluazinam, in any of the assessed traits. Regarding industrial yield, there was an interaction between Trichoderma, fluazinam and years, with higher pulp yield under higher disease incidence and fluazinam sprayed alone. It was found that biological control with Trichoderma spp. via chemigation as a single measure or in mixture with the synthetic fungicides procymidone fluazinam reduced the AUDPC and increased the productivity of processing tomatoes in 25 tons on average, compared to the control. Therefore, this study showed new options for the integrated management of white mold in processing tomatoes.Item Distribuição da variabilidade genética e fluxo de pólen em subpopulações de Annona crassiflora Mart. (Annonaceae)(Universidade Federal de Goiás, 2015-12-21) Almeida Júnior , Edivaldo Barbosa de; Soares , Thannya Nascimento; http://lattes.cnpq.br/5590256762396056; Soares, Thannya Nascimento; Chaves , Lázaro José; Borba , Tereza Cristina de Oliveira; Collevatti , Rosane GarciaThe Annona crassiflora Mart. species (Annonaceae) is a fruit plant native from Cerrado, widely distributed throughout the biome. The goal here was evaluate the spatial distribution of genetic variability in natural subpopulations of the species, geographically, and relate the genetic diversity levels with climatic and landscape profile, furthermore the pollen dispersal within a subpopulation. We used here six pair of microsatellite primers. To evaluate thedistribution of genetic variability we sampled 25 natural subpopulations, 30.6 plants per subpopulation, on average. We estimate the genetic diversity (He), allelic richness (Ar), fixation index (f), genetic structure, using coancestry coefficient (θ) and inbreeding coefficient of overall population (F). The spatial pattern the genetic variability was evaluated by Mantel test, Moran's I index and linear regression of genetic parameter with two spatial dimensions (latitude and longitude). We correlate He, Ar and f with climate suitability and the percentage of Cerrado vegetation around subpopulations. Furthermore we evaluated the pollen dispersal by paternity analysis, using 572 plants, including 460 seeds, 20 mother plants and 92 pollen donors candidate, within a natural subpopulation. The outcrossing rates were also evaluated in maternal families using the mixed mating model. The outcrossing rates indicate mating system with prevalence of allogamy. The assignment of paternity indicated that gene flow mainly occurs in short distances, until 360 meters, in the subpopulation evaluated. The 25 subpopulations have moderate genetic diversity levels and strong genetic structure. We found inbreeding due to the subdivision, but not in mating within subpopulations. The demes belongs to two consistent groups with genetic discontinuity between the northwest and southeast subpopulations distribution. The genetic diversity and allelic richness showed strong relationship with longitude, suggesting a range expansion in the southeastern direction. We noted that spatial distribution of genetic diversity and allelic richness are related to suitability at the last glacial maximum, by an indirect effect of geographical distances, whereas no relationship was observed regarding present suitability. The percentage of cover natural vegetation, in turn not explain the spatial distribution of genetic diversity, allelic richness and inbreeding coefficient.Item Evapotranspiração das culturas do milho e feijão no bioma Cerrado utilizando sensoriamento remoto por drones e satélites(Universidade Federal de Goiás, 2023-02-28) Almeida, Fillipe de Paula; Teixeira, Antônio Heriberto de Castro; http://lattes.cnpq.br/9956312513672760; Júnior, José Alves; http://lattes.cnpq.br/3418524049655817; Alves Júnior, José; Souza, João Maurício Fernandes; Giongo, Pedro Rogerio; Ferreira, Manuel Eduardo; Pena, Diogo SilvaCorn and beans are two of the main grains grown worldwide, with great importance in human and animal food. Corn cultivation is carried out mainly in the 1st and 2nd harvest, depending most of the time on rain and being vulnerable to dry spells. Likewise beans, which are mostly produced in the 2nd harvest. As a result, knowledge of crop evapotranspiration is essential to feed models for estimating and breaking productivity, managing water resources and managing irrigation. In this context, remote sensing becomes a viable alternative, with low operating costs and good accuracy. Thus, the objective of this work was to evaluate the performance of the Simple Algorithm For Evapotranspiration Retrieving (SAFER) algorithm in estimating the current evapotranspiration (ETa) of corn and bean crops in the northwest region of Goiás. Both studies were carried out in ItaberaíGoiás in an area irrigated by center pivot in the year 2021. The research was carried out in two parts: the first was to evaluate the impact of bolting on the calculated ET in an area cultivated with corn. Images from a MicaSense Altum multispectral and thermal camera coupled to a drone and three different sources of albedo images were used: Landsat 8, Sentinel 2A and drone. The albedo from the drone was obtained through the camera's reflectance images. The second part was to evaluate the impact of different albedo sources on the calculated ET, also using the camera images, but using four albedo sources. For this, an albedometer was installed in the field. The ET estimated by each source was determined with the ET obtained by the FAO method, Embrapa and climatological water balance from statistical indices. Tasseling in the maize crop contaminated the NDVI and albedo pixels, leading to a greater underestimation in the reproductive phase. On average, the MDE (mean square error) and AME (mean absolute error) were close to 1 mm day-1. Estimation of ET by remote sensing is not recommended for the reproductive phase of maize. Estimation of the ETa for the common bean crop is recommended from multispectral and thermal camera images, with both surface albedo sources. The confidence index ranges from 0.91 to 0.97. ETDroneAlb showed lower error compared to the standard methods.Item Escurecimento de grãos em feijão: parâmetros genéticos e fenotípicos, associação com tempo de cocção, seleção assistida por marcadores e obtenção de linhagens elite(Universidade Federal de Goiás, 2015-03-31) Alvares, Renata Cristina; Melo, Patrícia Guimarães Santos; http://lattes.cnpq.br/1508679345970114; Melo, Patrícia Guimarães Santos; Bruzi, Adriano Teodoro; Silva Filho, João Luís da; Souza, Thiago Lívio Pessoa Oliveira de; Ganga, Rita Maria DevósThe breeding of common bean cultivars with Carioca grain, slow grain darken-ing, upright plant architecture, and high yield has become a growing challenge. Slow grain darkening will increase the storage time, providing flexibility for producers for the time of sale, and consequently increasing profitability. Studies have demonstrated the existence of genetic variability for this trait, allowing the selection of lines with slow grain darkening. The objectives of this study were i) to estimate genetic and phenotypic parameters of lines of four segregating common bean populations; ii) select those with slow grain darkening, upright plant architecture and high yield; iii) seek an association between slow darkening and cooking time of grains after storage; iv) evaluate two induction methods of grain dark-ening and v) validate the markers Pvsd-1158 and PVM02TC116, associated with grain darkening. The tested lines were derived from four segregating populations resulting from crosses between the cultivar BRSMG Madrepérola with slow grain darkening and the par-ents BRS Estilo, BRS Cometa, BRS Notável, and CNFC 10429. Three trials were installed with 220 lines (55 per population), and 5 parents in a 5x15 triple lattice design, with plots of two 3-m rows, at three locations. The experiments were conducted in the winter grow-ing season 2012, one in Santo Antônio de Goiás and two in Brasilia. The traits grain yield, plant architecture, grain darkening, 100-grain weight, and cooking time were evaluated. The variance components and genetic and phenotypic parameters were estimated, and the phenotypic, genetic and environmental correlation coefficients between grain darkening and cooking time, 90 and 180 days after harvest. Induction methods of accelerated and slow darkening were compared. From the markers Pvsd- 1158 and PVM02TC116, identi-fied as previously linked to the gene that controls grain darkening, the frequency of recom-bination and selection efficiency of the markers was estimated for each population and environment and in the mean of the environments. For slow grain darkening, the estimates of heritability, genetic variance and expected gain with selection were high, indicating good chances of successful selection. For yield, plant architecture and commercial grain size, the estimates of heritability and genetic variance were high, but indicated no high gains with simultaneous selection. Lines with slow grain darkening were obtained from the four populations; the highest number of lines that combined slow darkening with upright plant architecture, high yield, and commercial grain size were derived from the crosses BRSMG Madrepérola x BRS Estilo and BRSMG Madrepérola x BRS Cometa. No im-portant genetic correlation between grain darkening and cooking time was identified, there-fore, light-colored grains do not indicate a short cooking time. The induction methods of slow and accelerated darkening, provide similar information in the discrimination of lines with slow and regular darkening. The estimates of the recombination frequency for marker Pvsd-1158 were always low, indicating the close linkage of this marker to the gene that controls slow darkening, and were stable in the different environments and populations. Marker PVM02TC116 however was not polymorphic in three of the four populations. The recombination frequency of this marker in the polymorphic population was high, showing that it is unsuitable for marker-assisted selection for grain darkening.Item Adição de pó de aciaria como fonte de micronutrientes e diferentes níveis de calagem em solos de cerrados cultivados(Universidade Federal de Goiás, 2010-02-26) Alves Filho, Anibal Sebastião; Dornelles, Milton Sergio; http://lattes.cnpq.br/9601151044965568; Leandro, Wilson Mozena; http://lattes.cnpq.br/9052207260053937; Ximenes, Paulo Alcanfor; Borges, Jácomo Divino; Barros, Rosana Gonçalves; Menezes, Luiz Antônio Silva; Leandro, Wilson MozenaThe savannas reached prominence in the development of corn (Zea mays L.), soybean (Glycine max L.) and processing tomato (Lycopersicum esculentum Mill.), Depending on the economic and social importance of these crops. The problems of acid soils and nutrient deficiency in the savannas are common in most soils, but once overcome these obstacles, the cultures exhibit satisfactory development and production. Increasingly it becomes necessary, by the dynamism that modern agriculture provides that alternative mechanisms of replenishment of nutrients to the soil are offered, due to the high cost of fertilizer and high extraction of these elements in each cycle of crops. The use of industrial waste from various sources has shown potential for agricultural use, for purposes of correction of acidosis, addition of macro and micronutrients to the soil or even physical conditioning of the soil, always under careful criteria used to avoiding the environmental contamination. The aim of this study was to evaluate the effect of the electric arc furnace dust coming from the steel industry as a source of micronutrients in crops of corn, soybean and tomato at different levels of liming. The tests were conducted in two locations. A field experiment was conducted at the experimental farm of the School of Agronomy and Food Engineering, Universidade Federal de Goiás, Campus Samambaia, in Goiânia-GO, Brazil and other, in a greenhouse at Palmital Farm, municipality of Urutaí-GO, in campus of the Instituto Federal Goiano. During three years, were evaluated in Goiânia-GO, the use of steelmaking dust in corn in rotation with soybean and, in Urutaí-GO, for seven months, the tomato crop in succession with soybeans. The results in both experiments indicated that the levels of heavy metals detected in soil and leaves of the plants analyzed were below the limits considered toxic.Item Histologia, bioquímica e herança da resistência do genótipo de algodoeiro TX25 a Meloidogyne incognita, raça 3(Universidade Federal de Goiás, 2014-01-31) Alves, Gleina Costa Silva; Carneiro, Regina Maria Dechechi Gomes; Rocha, Mara Rúbia da; http://lattes.cnpq.br/4660306671671575; Teramoto, Adriana; Furlanetto, Cleber; Duarte, João Batista; Barroso, Paulo Augusto Vianna; Rocha, Mara Rúbia daMeloidogyne incognita race 3 is a limiting factor for cotton crop, and the genetic resistance is one of the most desirable control measures for being environmentally and economically suitable. The objective of this research was to study the resistance inheritance of cotton genotype TX 25 to M. incognita race 3 and identify the resistance mechanism. Two experiments for phenotyping were conducted under greenhouse conditions, using two parental genotypes (susceptible FM 966 and resistant TX 25), backcross, generation F1 and generation F2. The plants were maintained for 120 days after inoculation (DAI). Plants were evaluated for gall index, egg mass index and reproduction factor. Histopathological study was conducted and the root systems evaluated at 2, 4, 7, 9, 11, 16, 18, 21 , 23, 29, 34 and 45 DAI. The roots werestained with acid fuscin to assess the nematode penetration. Rootlet cuts were made to observe the changes caused by the presence of the nematode in the root system of susceptible and resistant cotton cultivar. Biochemical tests were also conducted with the two parental genotypes. In this essay, the plants were kept in the greenhouse and inoculated with eggs and J2 of M. incognita. Assessments occurred at eight, 24 and 35 days after inoculation. The genotypes were compared biochemically as to total phenols, flavonoids, liquid chromatography and magnetic resonance imaging. The genotype TX 25 showed resistance to M. incognita race 3 when attacked by the nematode with the plants producing a hypersensitivity reaction. The crosses derived from TX 25 and FM 966 showed olygogenic resistance. TX 25 also shows glycosylated flavonoids and sugars that provide resistance to Meloidogyne incognita race 3.Item Resposta do crambe (Crambe abyssinica) a calagem e adubação mineral em solos de cerrado(Universidade Federal de Goiás, 2013-03-22) Alves, José Milton; Leandro, Wilson Mozena; http://lattes.cnpq.br/9052207260053937; Damin, Virgínia; Cunha, Patrícia Pinheiro da; Souchie, Edson Luiz; Jacob Neto, Jorge; Leandro, Wilson MozenaThere are no specific recommendations for the culture of crambe over fertilization with macro and micronutrients. This study aims to evaluate the effect of base saturation and mineral fertilization on crop crambe. Experiments were set in two growing seasons. In the first year were montadsos experiments in pots in the greenhouse and in the year 2010 which evaluated independently, the effect of doses of (N, P, Zn and B). The doses evaluated in mg kg-1 of soil were: N (control, 20, 40 and 80), P (control, 20, 40 and 80), Zn (control, 1, 2, and 4), B (control, 0.5, 1, and 2.) We evaluated the following parameters: root dry weight per plant, shoot dry mass per plant, grain yield per plant and oil content of the grain. In the year 2011, which was the second year of cultivation, were assembled in three experiments to evaluate field conditions, in isolation, in a factorial design the effect of raising the base saturation and nitrogen levels, base saturation and doses Phosphorus and base saturation and potassium levels in the culture of crambe. Each of these experiments was formed by a factorial design (4x3) with 4 replicates totaling 48 installments, the common witness to all nutrients. In each experiment, four levels of saturation and three levels of each mineral fertilizers. The base saturation levels were: (34 - natural soil, 40, 50 and 60%). The mineral fertilizers were evaluated: a) Nitrogen - 1 = control, 2 = 40 kg ha-1 nitrogen, 3 = 80 kg ha-1 nitrogen, b) Phosphorus - 1 = control, 2 = 40 kg ha-1 P2O5, 3 = 80 kg ha-1 P2O5, c) potassium - 1 = control, 2 = 40 kg ha-1 of K2O, 3 = 80 kg ha-1 of K2O. The experimental plots were formed by a rectangle of 9 m2 with 5 lines of planting spacing of 0.45 m between them. The planting was held using the cultivar 'Bright FMS ". The results obtained in greenhouse experiments showed that the addition of nitrogen increased linearly all measured parameters. The addition of phosphorus levels increased linearly the development of root, shoot and grain production. Addition of zinc doses increased linearly shoot growth and grain yield. The addition of boron doses quadratically influenced the development of the root system. The experiments in the field showed that the addition of nitrogen increased the dry weight of roots and shoots, productivity and no influence on oil content. The phosphorus levels significantly increased all parameters evaluated. Potassium significantly increased all parameters except the oil content. The base saturation influenced all parameters in a linear or quadratic.Item Adubação orgânica em sistema agroflorestal: atributos químicos e físicos do solo e desempenho das espécies consorciadas(Universidade Federal de Goiás, 2021-02-25) Andrade, Carlos Augusto Oliveira de; Leandro, Wilson Mozena; http://lattes.cnpq.br/9052207260053937; Collier, Leonardo Santos; http://lattes.cnpq.br/7449368697500123; Collier, Leonardo Santos; Calil, Francine Neves; Flores, Rilner Alves; Freitas, Gilson Araújo de; Silva, Átila Reis daThe insertion of barueiros in the production systems through agroforestry system SAFs can promote the integration of rural areas in the Cerrado, especially when combined with crops of high relevance for farmers in this region, preserving natural resources and providing additional income for producers. Due to the integration of different crops, whether through consortia, successions or crop rotation, the demand for nutrients can be intensified, causing greater dependence on mineral fertilizers, which increases production costs. Organic fertilization can be a lower cost strategy to supply the nutrient demand for SAFs, in addition to contributing to the maintenance of the system's sustainability. The aim of this study was to evaluate the changes in different doses of organic compost in the chemical and physical attributes of the soil and in the development of crops grown in an agroforestry system in the Cerrado of Goiás. The experiment was conducted in a SAF composed of barueiros, divided into six rows of 14 trees, with banana trees and agricultural crops grown between the rows. The experimental design was in randomized blocks with 6 treatments and 4 repetitions. The treatments consisted of four doses of organic compost (5, 10, 20 and 40 Mg ha-1), a treatment with mineral fertilization, plus the control without fertilization. The chemical and physical attributes of the soil, the agronomic performance of cowpea and banana and the growth of cassava and baru trees were evaluated. The applications of organic compost promote positive changes in the chemical attributes of the soil, especially in the first layers, with increased levels of MOS, P, K and Mg compared to mineral fertilization. During the studied period, the doses of organic compost and mineral fertilization did not affect the physical attributes of the soil to a depth of 0.20 m. The organic compost formed by energy cane biomass and cattle manure shows potential as an organic fertilizer in the cultivation of cowpea and banana cultivated in an agroforestry system, being able to substitute at 100% the mineral fertilization in the nutrition of these cultures. Doses 20 and 40 Mg ha-1 of organic compost provided the greatest increases in the vegetative performance of cassava, equivalent to mineral fertilization. During the period studied, mineral fertilization and doses of organic compost did not affect baru growth.Item Reação de genótipos de soja ao mofo branco(Universidade Federal de Goiás, 2015-06-19) Andrade, Gabriela Carolina Guimarães; Cunha, Marcos Gomes da; http://lattes.cnpq.br/2006008625763742; Cunha, Marcos Gomes da; Carrer Filho, Renato; Garcia, Riccely Ávila; Silva, Adélia Cristina Fernandes; Ferreira, Maria AlvesWhite Mold, caused by Sclerotinia sclerotiorum fungi, is, currently, one of the most important diseases of soybean, causing considerable economic losses and is of difficult control. The Fungi has more than 400 host species, including crops of agronomical importance as soybean, common beans and sunflower. The dissemination is mainly accomplished by infected seeds or by the presence of sclerotium. Genetic resistance is the most effective of plant disease control but is not well known about the soybean varieties resistance in Brazil and the current inoculation methods do not always have good correlation with field data. The main goals of this study were the evaluation of the resistance of soybean genotypes in two environments, Barreira – BA and Jatai – GO, correlate the rainfall with the variables analyzed, test two different methods, one in the greenhouse using tooth pick and other in the laboratory using oxalic acid, as well as correlate the data from the experiments in the fields with the greenhouse and the sensibility to the oxalic acid. According to the data analyzed, there are differences between genotypes of soybean in respect to the resistance of white mold. Early genotypes and more resistant to lodging were more resistant to white mold, but showing variations in the results. There was interaction between environment and soybean genotypes. The environment influenced meaningfully the occurrence of the disease in the tested genotypes, where in the severity correlate negatively and meaningfully with yield, in other words, the bigger the severity, the less the yield. The genotypes ANTA82, 2011L003 and 2011L005 had higher yields and were genetically more resistant to the disease. In respect to the methods used for the selection of resistant genotypes to white mold, it was seen that the oxalic acid method is an alternative for selection of resistant genotypes, since the variability of the pathogen is not considered, using the physiological traits of the genotypes. The experiments in the greenhouse are not correlated to the experiments in the field, due to the difficulty of reproducing equal symptoms that normally occur in the field. However, the method of the oxalic acid was shown to be reliable to be used in the phenotype of soybean cultivars but methodology adjusts should be done in future tests.Item Efeitos de culturas de cobertura na qualidade física do solo sob plantio direto(Universidade Federal de Goiás, 2008-02-22) Andrade, Rui da Silva; Silveira, Pedro Marques da; Stone, Luís Fernando; http://lattes.cnpq.br/0233514913817700The objective of this study was to verify the suitability of S index in the diagnostic of physical quality of Cerrado soils and, based upon it, to determine the effect of cover crop mulches on physical quality of a Dystrophic Red Latosol (Oxisol) under no-tillage. A total of 2364 samples were selected from the soil data base of Embrapa Rice & Beans and Embrapa Cerrados, covering Cerrado soils from Mid-West, North, and Northeast regions of Brazil. Values of S index, defined as the slope of the soil water retention curve at its inflection point, obtained from these samples were correlated to soil bulk density, macroporosity, and total porosity, considering the following textural classes: very clayey, clayey, sandy clay, sandy clay loam, loam/sandy loam e loamy sand/sand. Based on review of literature, critical values were established for the physical attributes that separated, according to the texture, soils with good and poor structural quality and, based upon they, critical values were established for the S index. In order to study the effect of cover crop mulches on soil physical quality, an experiment was carried out under center pivot at Embrapa Rice & Beans, in Santo Antônio de Goiás, GO, in a randomized block design, with eight replications. The treatments consisted of eight cover crops: Brachiaria brizantha; corn associated with B. brizantha; pigeon pea; millet; Panicum maximum; sorghum; Stylosanthes guianensis; and Crotalaria juncea. The first seven crops had been cultivated in summer season since December 2001 and C. juncea since November 2003. In the winter season, after cover crop desiccation, irrigated common bean crop was implemented under no-tillage. In February 2006, soil organic matter content, some soil physical attributes, and soil physical quality measured by S index were determined. This index was highly correlated to the physical attributes, showing to be an adequate indicator of physical quality of Cerrado soils. The limit value of S = 0.045 showed to be adequate to separate soils with good structure and soils with the tendency to be degraded, while values of S ≤ 0,025 indicate physically degraded soils. Cover crops, specially grasses, favored soil aggregation at surface layer. Soil cultivation modified its structure in comparison to native forest, increasing bulk density and reducing macroporosity and total porosity, and hence, reducing soil physical quality. Among the cover crops, pigeon pea, C. juncea, and corn associated with B. brizantha were those that maintained soil surface layer with good physical quality.Item Produção de mudas de espécies florestais inoculadas em dois tipos de recipientes(Universidade Federal de Goiás, 2017-03-17) Andraus, Michel de Paula; Brasil, Eliana Paula Fernandes; Leandro, Wilson Mozena; http://lattes.cnpq.br/9052207260053937; Leandro, Wilson Mozena; Borges, Jácomo Divino; Calil, Francine Neves; Cunha, Ananda Helena Nunes; Sousa, Ricardo Fernandes deNowadays there is an increasing environmental pressure, which causes industries to develop new alternatives for the destination of residues generated by industrial processes. The costs of construction and maintenance of industrial landfills and the environmental risks that are involved in this process have aroused the interest of several industries in studying the feasibility of residues application in agriculture. One of the alternatives for agroindustrial residues is the substrate for seedlings. In view of the above, it is verified that the use of containers of agroindustrial residues pressed together with the inoculation of rhizobia and mycorrhizal fungi can bring numerous benefits to the production of forest seedlings and also to the environment. However, the association of these practices has not been sufficiently studied. The objective of this work was to evaluate the phytotechnical aspects of three forest species when cultivated in pressed blocks, composed of different proportions of agroindustrial residues and convenctional plastic tubes, and the effect of inoculation with rhizobia and mycorrhizal fungi on these seedlings. For that, an experiment was carried out in which four compounds with different ratios of sugarcane bagasse, filter cake, coconut fiber and aviary waste were made. In the pressed blocks of the selected composted substrate were planted seeds of Acacia manigium, Sesbania virgata and Eucalyptus grandis. The first two species were inoculated with rhizobia and mycorrhizal fungi specific for each species, and eucalyptus only with mycorrhizal fungi. At 70 days after sowing, mycorrhizal colonization, nodulation, phytotechnical and nutritional parameters were evaluated. And the data were submitted to analysis of variance and test of comparison of means. It was verified that the pressed blocks of agroindustrial residues do not provide better development of seedlings of Acacia mangium and Eucalyptus grandis in relation to the conventional tube. Inoculation with rhizobia, alone or associated with arbuscular mycorrhizal fungi in the seedling production phase, provides better development of the Acacia mangium species. The seedlings of Sesbânia presented better development with the system of production of seedlings in pressed blocks, made with agroindustrial residues. It could be observed that the response to the use of the pressed blocks depends on the species that will be used.Item Modelagem matemática da variação espaço-temporal da temperatura média diária e do ciclo do algodoeiro herbáceo no Estado de Goiás(Universidade Federal de Goiás, 2009-08-14) ANTONINI, Jorge Cesar dos Anjos; OLIVEIRA, Virlei Alvaro de; http://lattes.cnpq.br/0739376049142731; OLIVEIRA, Luiz Fernando Coutinho de; http://lattes.cnpq.br/5499109407814908; GRIEBELER, Nori Paulo; http://lattes.cnpq.br/2953067359172793The regional climatic conditions in the State of Goias Brazil are favorable for herbaceous cotton (Gossypium hirsutum L. r. latifolium hutch) cultivation. However, for achieving the best productivities, it is important that both the planting date and the fruiting period be matched with the adequate soil-water availability as well as that the period from open bull to harvesting be coincident with the dry period. Thus, the knowledge of cotton cycle as function of planting location is very important for choosing the optimum planting date. In this context, the air temperature is one of the climatic variables that mostly influence the cotton growth. Nevertheless, the low density of meteorological stations with capability for measuring temperature has restricted the modeling studies for estimating cotton cycle. This work was carried out with the objective of developing and validating mathematical models to estimate average daily air temperature and based on the degreesday theory, the cycle of herbaceous cotton in the State of Goias, considering altogether its variations in space and time. Both models were based on a linear combination of elevation, latitude, longitude, and the daily time variation, represented by an incomplete Fourier series. The parameter models were adjusted to the data from 21 meteorological stations available in the State of Goiás and Federal District of Brazil, using multiple linear regressions with observations varying from eight to twenty four years. In the case of modeling degrees-day, the maximum and minimum temperature data were limited between 15°C and 40°C, which were taken as the lower and upper threshold temperatures, respectively. The air-temperature model was validated against the measured data from three meteorological stations from different elevations: high (1100 m), medium (554 m) and low (431 m). The coefficients of determination obtained from fitting the models for both daily air-temperature and daily degrees-day were 0.82 and 0.84, respectively, resulting in a medium performance for both low and high altitudes and very good for intermediate altitudes. The validation of the degrees-day model was conducted by comparing the period duration running from crop emergence to 90% open bulls observed from cotton cultivars, cropped in commercial fields. The results showed an overall performance index of 0.85, which was considered as very good. The models developed in this study adequately estimated the average daily air temperature and the cycle of herbaceous cotton cultivars in the State of GoiasItem Aspectos da biologia e manejo do nematoide de cisto da soja(Universidade Federal de Goiás, 2013-07-04) Araújo, Fernando Godinho de; Rocha, Mara Rúbia da; http://lattes.cnpq.br/4660306671671575; Rocha, Mara Rúbia da; Melo, Patrícia G. Santos; Campos, Hércules Diniz; Ribeiro, Neucimara Rodrigues; Meyer, Maurício ConradoSoybean is the most important oilseed crop grown in the world and Brazil is the second largest producer. Many pest problems can affect soybean, including the soybean cyst nematode, Heterodera glycines. The search for efficient management alternatives of this nematode and understanding of their biology have been largely studied, but still lacking information. Experiments were conducted under greenhouse conditions and naturally infested field aiming to better understand the behavior of H. glycines and to propose management alternatives. The first study had the purpose to evaluate the penetration and life cycle of H. glycines, race 3 (HG Type 0 -) in soybean cultivars resistant (BRSGO 8860RR) and susceptible (BRS Valiosa RR) under greenhouse conditions. Evaluations in stained roots were made at 2, 4, 6, 9, 12, 15, 18, 21, 24 and 30 days after inoculation (DAI). The penetration of H glycines occurred throughout the period of evaluation in both cultivars. The H. glycines life cycle was completed in 15 days, both in the susceptible and resistant cultivars. Resistant cultivar had the peak period of formation of J3, J4 and females delayed in comparison with the susceptible cultivar. The second study aimed to evaluate effectiveness of the resistance to H. glycines under high inoculum concentration, and the effect of increasing inoculum rates on the penetration of juveniles and H. glycines survival. Two experiments were conducted using three soybean cultivars (BRS Valiosa RR, susceptible to H. glycines; BRSGO Chapadoes and BRSGO 8860RR, both resistant to H. glycines) under four inoculum concentrations (1.000, 2.500, 5.000 and 10.000 eggs and J2 per plant). The increase in the H. glycines inoculum concentration increased the final nematode population in the susceptible cultivar. The cultivar resistance was not affected by high inoculum concentration. The root penetration of J2 increased as the inoculum concentration increased regardless the cultivar. The survival rate was higher in the susceptible cultivar decreasing with increasing of inoculum concentration. The third study evaluated the effect of seed treatment two soybean cultivars (resistant BRSGO 8860RR and susceptible BRS Valiosa RR). Two experiments were conducted, one in a naturally infested field and other under greenhouse conditions. The seed treatments did not affect the stand and the plant height of the resistant soybean cultivar. There was no effect of seed treatments on the nematode population in the field experiment. Under greenhouse, seeds treated with abamectin (50 and 75 mL a.i. 100 kg seed-1) + thiamethoxam (70 mL a.i.), imidacloprid + thiodicarb (105+315 mL a.i.) and thiodicarb + imidacloprid with carbendazim + thiram (75+225 e 30+70 mL a.i.) reduced the number of females per gram of roots on the susceptible cultivar. Seed treatment with imidacloprid + thiodicarb (75+225 mL a.i.) also reduced the number of eggs per female on the resistant cultivar BRSGO 8860RR.Item Atributos químicos do solo e desempenho de culturas em rotação ou consórcio com plantas de cobertura em sistema agroflorestal(Universidade Federal de Goiás, 2017-03-09) Arruda, Everton Martins; Flores, Rilner Alves; http://lattes.cnpq.br/6161143914254137; Collier, Leonardo Santos; http://lattes.cnpq.br/7449368697500123; Collier, Leonardo Santos; http://lattes.cnpq.br/7449368697500123; Calil, Francine Neves; Damin, Virgínia; Cruz, Simério Carlos Silva; Behling, MaurelThe presence of an arboreal component, such as in agroforestry systems, can promote a better balance of tropical ecological processes, allowing agricultural exploration in vertical and horizontal landscape profiles. This, together with the inclusion of single or intercropped cover crops in the agroforestry understory can increase the beneficial effects through interaction among species, favoring greater nutrient accumulation and cycling. Therefore, the objective of this research was to evaluate the soil chemical attributes and the performance of agricultural species and cover crops in rotation/consortium in an agroforestry system in the cerrado region of Goiás. The research was carried out between 2012 and 2016, in the city of Goiânia-Goiás, in an agroforestry system implanted in an 8- year-old Baru forest (Dipteryx alata V.). Soil from the experimental area was classified as typical dystrophic Red Latosol. The experimental design was randomized complete block (RCB), with four replications. Cover plants were cultivated singly: Pigeon pea (Cajanus cajan); Stylosanthes cv. Campo Grande (Stylosanthes macrocephala - 20% and Stylosanthes capitata - 80%); Massai grass (Panicum maximum) and intercropped: Pigeon pea+ Massai grass and Stylosanthes + Massai grass, in addition to an area under spontaneous vegetation (control treatment). We evaluated soil chemical fertility and dry phytomass productivity and macronutrient accumulations by cover crops, quality and yield of corn silage grown in rotation with the cover plants, relative index of chlorophylls and growth of Banana trees cultivated in consortium with the cover plants, in addition to the growth of the Baru trees during this period (height, diameter at breast height and crown diameter). The Campo Grande Stylosanthes increased the calcium contents, pH values and sum of bases in the soil solution at depth 0-10 cm after two years of cultivation. However, Massai grass, alone, increased potassium levels at depth 0-10 and 10-20 cm in the same cultivation year. The dry matter yield of silage maize was similar among the residual straw of Pigeon pea, Massai grass, and Stylosanthes + Massai grass cultivars. However, cultivation with residual Stylosanthes increased the crude protein percentage. The growth in height of the banana trees at 6 and 12 months was higher in consortium with Massai grass when compared to the area maintained with spontaneous vegetation. The incremental increase in height of Baru trees only increased after two years through the residual Campo Grande Stylosanthes. The highest productivity of dry phytomass was obtained from Massai grass, alone. The accumulations of nitrogen, phosphorus, calcium and sulfur were similar among Massai grass alone, Stylosanthes alone, and Massai grass + Stylosanthes consortium. However, potassium and magnesium accumulations were only higher in the aerial part of the Massai grass, alone.Item Estrutura genética e sistema de cruzamento em Eugenia dysenterica DC. (Mvrtaceae)(Universidade Federal de Goiás, 2014-03-28) Barbosa, Ana Clara de Oliveira Ferraz; Collevatti, Rosane Garcia; Telles, Mariana Pires de Campos; http://lattes.cnpq.br/4648436798023532; Telles, Mariana Pires de Campos; Martins, Karina; Figueiredo, Lúcio Flávio de Alencar; Chaves, Lázaro José; Coelho, Alexandre Siqueira GuedesThe genetic structure of a species corresponds to the amount of genetic variability and its distribution within and among local populations and individuals. The patterns of variability among individuals in a local population are highly dependent of mating system. The goal of this study was to evaluate the mating system, the diversity and genetic structure in populations of E. dysenterica in local and regional scale. The assessment of the mating system and the analysis of genetic structure at the local scale were performed in a population of Mimoso – GO and for the analysis of genetic structure at the regional scale were analyzed 23 natural populations of E. dysenterica derived from six Brazilian states (Goiás, Minas Gerais, Bahia, Mato Grosso, Tocantins and Piauí). For all studies seven polymorphic microsatellite loci were used. Considering the 20 families analyzed, the multilocus outcrossing rates (tm = 0.918) and single locus (ts = 0.797) were high and significant. From a total of 399 seeds evaluated, it was possible to determine the pollen donor to 218 seeds (55%) with confidence level of 90%, 174 seeds (44%) with confidence level of 95% and 65 seeds (16%) with confidence level of 99%. In 15 families evaluated were possible to verify the occurrence of multiple paternity, with the number of pollen donor per fruit ranged from one to three. The results presented show that the species E. dysenterica presents mixed mating system and that there is multiple paternity in this species. The intrapopulational spatial genetic structure was positive (R2 = 0.01646, p < 0.001), which was expected since species generally have spatial restriction to disperse. The spatial genetic structure was significant (Sp = 0.0143) and genetic neighborhood (Nb) was equal to 69.93 km. On average, about 30 individuals were analyzed by subpopulation for all loci. The average number of alleles per locus was equal to 9, the genetic diversity was high (0.725) and the observed frequency of heterozygotes (Ho) was 0.610. Were found 18 private alleles in 10 subpopulations. The results for the fixation index ((f) in the subpopulations ranged between -0.058 and 0.338, with an overall value of 0.162, indicating excess of homozygotes in relation to the expected under HWE. The genetic differentiation between subpopulations can be considered relatively high (FST = 0.161). The Mantel test indicates that the genetic divergence of 24 subpopulations evaluated is structured in geographic space (r = 0.427, p < 0.001), suggesting that the model of isolation by distance or stepping-stone are adequate to explain the spatial pattern of genetic divergence among subpopulations of E. dysenterica evaluated.Item Fertilizantes com polímeros, DMPP e EDTA aplicados em tomate industrial e efeito residual na soja(Universidade Federal de Goiás, 2014-04-25) Barbosa, Juliano Magalhaes; Leandro , Wilson Mozena; http://lattes.cnpq.br/9052207260053937The processing of tomato (Solanum lycopersicum L.) is featured in the centerwest region of Brazil, especially the state of Goiás, which currently leads the national production. Soy (Glycine max (L.) Merrill) is the culture that has grown over the past decades, especially in the central regions of Brazil, in other words, in the Cerrado. It's an interesting succession of areas cultivated under irrigation management in winter crop, taking advantage of the residual fertilizer left by irrigated crops. The present work aims to evaluate the application of stabilized fertilizers and slow release in partial or total replacement of conventional NPK fertilizer in cultivation of industrial tomato and its residual effect on soybean in crop rotation, evaluating by the determination of the related attributes productivity. The study was performed in field's condition in a Distrofic Red Latosoil clay soil in the experimental area of the School of Agronomy in Goiania – Goias. The experiment was conducted in the years 2011 and 2012 in a randomized complete block design with seven treatments and five repetitions. Conventional fertilizer NPK 04-30-16 fertilizer and partially coated with polymers and stabilized with DMPP was used. The source of fertilizer was applied only in the culture of industrial tomatoes associated with tillage. In the 2011/2012 season there was no reapplication and used tillage system without tillage. Sampling of soil and leaf were taken at flowering crops. It is concluded that partial replacement of NPK fertilizer at planting for fertilizers with DMPP responds with significant result for productivity. When complete replacement of fertilizer DMPP via soil is performed the result is not significant for yield. Of soybean crops in succession to growing tomatoes no residual effect of fertilizer was observed for productivity.Item Eficiência de biofertilizante oriundo da metanogênese na cana energia(Universidade Federal de Goiás, 2020-02-21) Barros, Leonardo Rodrigues; Flores, Rilner Alves; http://lattes.cnpq.br/6161143914254137; Leandro, Wilson Mozena; http://lattes.cnpq.br/9052207260053937; Leandro, Wilson Mozena; Brasil, Eliana Paula Fernandes; Correchel, Vladia; Ribon, Adriana Aparecida; Zang, Joachim WernerBiofertilizer is a co-product obtained through the anaerobic fermentation of organic residues. It is presented, in general, in liquid form, having a variable composition of nutrients, mainly nitrogen, potassium and phosphorus. The study of agronomic variables is essential in crops that received the biofertilizer for the proper management of energy cane. Thus, the objective was to evaluate the effect of application and residual doses of biofertilizer from methanogenesis in energy cane during three years of cultivation. The experiment was carried out in a greenhouse at UFG. The soils used were: LATOSSOLO VERMELHO Ácrico (LVw) (490 g kg-1 of clay) and LATOSSOLO VERMELHO AMARELO Distrófico (LVAd) (160 g kg-1 of clay). The design was in randomized blocks, factorial scheme (2x6), with 2 soils of different textures and 5 doses of biofertilizer (0; 150; 300; 600 and 1200 m3 ha-) and an NPK treatment. The biofertilizer came from the methanogenesis of energy cane. Biometric analyzes (height, diameter and number of tillers) were carried out for cane plant monthly adding up to a total of ten evaluations, for cane ratoon I and II there were 5 evaluations. The productivity and fertility evaluation were carried out at the end of each cycle, whereas the leaf evaluations in the cane plant and ratoon II were in the period of 8 months of development of the culture. The physiological evaluations in the plant cane were carried out at 300 DAP. The results obtained were submitted to analysis of variance by the F test, and polynomial regression. For the tiller variable in the plant energy cane in the LVAd and LVw, it was noted that the higher the dose applied, the plant had a higher number of tillers. In the total green biomass in the cane plant in the LVAd and LVw the maximum efficiency doses were 1083.69 and 811.28 m3 ha-1 . The leaf potassium contents in the cane plant in the LVw were higher at doses of 600 and 1200 m3 ha-1 , with the following averages 8.27 and 9.19 g kg-1 . A linear increase in total dry biomass was observed in the first ratoon in the LVAd. In the second ratoon evaluation of soil fertility, a significant effect of treatment was observed only for organic matter in the soil. In general, the application of increasing doses of biofertilizer improves the productivity of cane energy plant and ratoon. The doses of biofertilizer in plant cane are significantly responsive to physiological variables: photosynthesis, stomatal conductance and transpiration. The residual effect of the biofertilizer on the second cane energy ratoon does not affect the development of the crop in height and diameter and stalk production, however it increases the number of tillers. The biofertilizer application increases the potassium content in the plant, and reflects in the stalks production of the energy cane plant.Item Implicações da interação de genótipos com ambientes na recomendação de cultivares de feijoeiro comum: validação de regras e importância de fatores ambientais(Universidade Federal de Goiás, 2019-11-14) Barros, Matheus Souza de; Melo, Leonardo Cunha; http://lattes.cnpq.br/9132553601896172; Melo, Patrícia Guimarães Santos; http://lattes.cnpq.br/1508679345970114; Melo, Leonardo Cunha; Mello Filho, Odilon Lemos de; Pereira, Helton Santos; Silva Filho, João Luís da; Abreu, Ângela de Fátima BarbosaThe genotypes by environments interaction (GxA) can be defined as the differential phenotypic response of genotypes in different environments. This phenomenon is the main complicating factor in recommending broadly adapted cultivars in common bean and others crops. The value of cultivation and use (VCU) tests are required for registration of new cultivars. These tests are intended to generate agronomic information about the performance of candidate lines for new cultivars in the various cultivation environments. The rules for conducting VCU tests were very restrictive as they require many tests to register the new cultivar. This step in the development process of new cultivars is the most costly for common bean breeding programs for logistical and operational reasons. Because of this, the standard rule has been relaxed since 2010 and was considers the regionalization of Brazil in edaphoclimatic regions. Thus, ten environments are currently accepted for regions I (South) and II (Central), and six environments for Region III (Northeast). Of which three environments are required per sowing season for the season in which the cultivar is to be indicated. The sowing seasons are for region I “waters” (águas) and “drought” (seca); and for region II "waters" and "winter" (inverno). The tests must be conducted for two years. Thus, this work aims to: validate the number of environments (VCU assays) currently accepted for registration of new cultivars, through computer simulations with real data, and; to evaluate environmental factors to determine their relevance to the phenotypic variation of candidate lines. Grain yield data were used for the study. Data were obtained from 406 VCU trials during 17 years of the common bean breeding program of Embrapa Rice and Beans. During this period 101 candidate lines and 19 commercial cultivars were evaluated as control. The trials were distributed among the three edaphoclimatic regions that contribute most for of the common common bean grain production. For the simulation study an algorithm was built to randomly sample the environments in various combinations. The combinations represent several scenarios, which vary in the number of environments. 288646 simulations were performed and the five best classified genotypes were compared, by coincidence, with the five classified in the complete joint analysis. This analysis uses all available environments in each VCU cycle (two years). Nonlinear modeling was used to adjust estimates to the asymptotic curve to obtain the adjusted averages of coincidence. The curve equation was derived to obtain the instantaneous rate of change. For the criterion of determining the minimum number of environments, the mean value theorem was used to estimate the average rate of change (∆dM) between scenarios, where the x value for the average rate represents the minimum number of environments. For the study of environmental factors two approaches were used: the modeling by mixed models to estimate the variance components and; the classical approach to analysis of variance with decomposition of GxA interaction. In addition to these analyzes, the GxA interaction was decomposed into the simple and complex parts. The results of the simulation study indicated high average coincidence between genotypes even in scenarios with few environments. The elevation of the coincidence was progressive until the scenario with eight environments in regions I and II, which represents the point of ∆dM. However, the number of currently accepted environments (ten) for these regions was more appropriate. For region III, the ∆dM occurred 6.25 indicating that the minimum number of environments for this region is capable of detecting the genotypes most adapted to this region. For sowing seasons, three environments resulted in estimates of over 60% of average coincidence, except for the winter season (53.4%). Thus, it is concluded that the number of environments currently accepted for registration of new cultivars is capable of indicating the superior genotypes. The mixed model evaluation of the environmental factors analysis by region indicated that the GxLxExA interaction is the component of variance that contributes most to the total variance, followed by the effect of locations for regions I and II. In region III the effect of sites was the most important of the components. The analysis of variance of the factors and their partial decompositions indicated that in region I that the isolated effects of times and places together with the GxL interaction were more relevant. In region II, GxE interaction was the most significant componet involving genotypes. The isolated environmental components varied in importance between cycles in the region II. The local effect and GxL interaction are the most expressive components in region III. The decomposition of the interaction was predominantly complex in all studied cycles for all regions. It is concluded, therefore, that in region II the environmental factors sowing seasons, years and location were the ones that participated with most of the total variation. GxE was the most significant among the interactions of environmental factors involving genotypes in region II. In region III the main sources of variation for the isolated effects were location and years, in that order. The variance components indicated that the interaction of genotypes with the environmental components were more important for regions I and II, and for region III the location effect was more relevant. The location effect is the isolated variance component that most contributes to the total variation in all regions. The type of complex interaction was predominant among the combined assays in all regions.Item Simulação da intensidade de infestação de Diatraea saccharalis e impactos na qualidade tecnológica e econômica da cana-de-açúcar(Universidade Federal de Goiás, 2017-03-31) Belém, Camila de Souza Queiroz Pinheiro de; Fernandes, Paulo Marçal; http://lattes.cnpq.br/9497281141847296; Fernandes, Paulo Marçal; Melo, Aniela Pilar Campos de; Pereira, Jaqueline Magalhães; Borges, Lurdineide de Araújo B.; Caliari, MárcioThe sugarcane borer, Diatraea saccharalis (F.) (Lepidoptera: Crambidae), is an important pest of sugarcane (Saccharum spp.). Galleries are produced within the stalks as a result of the larval feeding. The holes allow the entry of microorganisms and fungi that can modify the technological quality of the raw material that goes to the industry. In this context, the objective was to estimate the influence of infestation intensity of D. saccharalis on the sugarcane technological quality and economic in different varieties. Two experiments were carried out. One with plants collected in September 2014 and another with plants collected in July 2015. In both of them was used completely randomized design with five repetitions. Treatments resulted of a factorial combination between three sugarcane varieties (IAC91-1099, RB86 7515 e CTC 4) and six infestation intensities of D. saccharalis (0%, 20%, 40%, 60%, 80% e 100%). Each plot corresponded to cane internodes with percent internodes with borer and rot corresponding to infestation intensities. The contents of Brix in the juice, Pol in the juice, fiber of the cane, Pol in cane, Purity of the juice, juice reducing sugars, stalk reducing sugar and total recoverable sugar were evaluated. The influence of the infestation intensity of D. saccharalis on sugarcane varies between the varieties and between the harvesting seasons. The presence of red rot in sugarcane does not necessarily imply loss of technological quality. The level of control should not be generalized and should be established taking into account varieties and harvesting carried out in the middle and at the end of the harvest.Item Caracterização sensorial e físico-química de tangerinas produzidas em Goiás(Universidade Federal de Goiás, 2017-02-23) Belo, Ana Paula Marquez; Cunha Júnior, Luis Carlos; http://lattes.cnpq.br/3474242164762840; Souza, Eli Regina Barboza de; http://lattes.cnpq.br/7641431808466123; Souza, Eli Regina Barboza de; Naves, Ronaldo Veloso; Fernandes, Paulo Marçal; Borges, Jácomo Divino; Camilo, Yanuzi Mara VargasThere is a Brazilian citriculture vulnerability, permeated by a small variability on the tangerines which are part of a comercialized group, with a lack of consumer market by a greater supply of this product. Linked to this fact, there is a divergence of quantitative information related to the market and the tangerine characterization making it difficult the public and private actions that provide to the planning and development of the production and trade. Based on these issues, it is aimed to develop a study of the evolution of price, the physico-chemical characterization and Ponkan tangerine sensory characteristics for fruits of early harvest, harvest and of harvest of Goiás State.The tangerines and the price data on trade were collected weekly during the months between March and August (season and off season) in 2015. Simultaneously with the collection of plant material, it was collected data related to market prices charged by tangerine distributors of Goiás State. Sensory analysis was performed, using hedonic scale and test purchase intent, determination of fresh mass, longitudinal and transverse directions diameters, number of seeds, soluble solids, titratable acidity, pH, ratio, vitamin C levels and peeling color. The obtained data was submitted to descriptive statistics (measures of position - average) and variance analysis (F test, Tukey test) to assess the significance of the harvest period (harvest season, late harvest) in the tangerine chemical and physical attributes. It was also intended to do an organical analysis and compare the three varieties of citrus, Ponkan Tangerine (C. reticulata Blanco), the hybrids Clementina (Citrus Clementina Hort. eg. Tanaka) and the Murcote one (C. reticulata Blanco x C. Sinensis Osbeck) and tangerine Clementina sel. Palazelli (Citrus Clementina hort. eg. Tanaka) and compare the physico-chemical characteristics of a traditional variety of tangerine in Brazil, the Ponkan tangerine, with other varieties. Varieties were studied such as Hino Akebono, Oogui Wase, Ogata, Iwaki, Hybrid 21, Clementina x Murcote, Oota Poncan Nankan, 20, Clementina Palazelli, Ankou Tangor, Imazu Poncan, Cravo, Robson, Ortanique tangor, 'Poncan Embrapa, Tangor Nova, Hybrid 34, Ponkan, Clemenules, Organic Ponkan, BRS Page, Miyauti, Montenegrin, Clementina, Decopon, Tangor Lee, Kyomi Tangor, Ellendalle Tangor. A study was carried out on the physicochemical fruit characteristics, as fresh mass, longitudinal diameter and transverse directions, juice yield, number of seeds (SN), soluble solids (SS), titratable acidity (TA), pH, ratio (SS/TA), levels of vitamin C, and total extractable polyphenols (PFT), as well as the total antioxidant activity and the data of peel color. The organic compounds characterization was obtained from plant extracts analyzed by mass spectrometry (MS), using the electrospray ionization technique (ESI). The results were submitted to variance analysis, complemented by the Scott-Knott test. It was also aimed to evaluate the acceptability, the purchase intent and the preference for five tangerine varieties when compared to the variety ponkan, at the beginning and end of season and also to get to know the discussion between the convencional and organic ponkan. And during the study, some varieties were used such as Oogui Wase, Hino Akebono, Ogata, Lee and Kyomi Taylor, the commercial variety of Ponkan and organic ponkan. There was a preference and scale of attitude ranking test or purchase intention and preference test for paired comparison and acceptance with structured hedonic scale verbal. All tests had the presence of 50 evaluators, aged between 18 and 70 years. The data obtained were subjected to descriptive statistics (average, relative frequency) and the significance of the treatments was estimated through the F test, and the average compared by the Tukey test. The attributes for the appearance, taste and purchase of all varieties were compiled for conducting multivariate analysis. They were used principal components analysis (via correlation matrix) and cluster analysis (UPGMA - Unweighted Pair Group Method sing Arithmetic Averages), using the euclidean distance as similarity coefficient. The main obtained conclusions in each study were: the evolution of Ponkan fruit price that are comercialized in Goiás State following a parabolic trend.The price depends on seasonal factors linked to the harvest period. The fruit which are sold during the season, show physical specific standard (greater mass and diameter) and chemical (less acid and with greater ratio), culminating in greater acceptability by people who judge it. The variety Ponkan, one of the favorite commercially , cannot be considered as a natural source with properties high antioxidants. The Miyauti tangerine is a very promising one for the consumer market due to their beneficial health phytochemistry composition. Oogui Wase is the one with higher similarities with Ponkan in relation to physical attributes, in addition to be seedless. Clementina Murcote x and Clementina Palazelli show chemical profiles that should be studied and can be used by science source. Frutos de Lee, Oogui, Hino and Ogata are not considered good to consumme because of the taste and appearance culminating in low purchase. Ponkan fruit from the beginning to the end of season are the favorite ones because of their appearance and taste superiority. The appearance is the main attribute to set the intention to purchase. Ponkan from conventional system are superior in appearance but below the flavor in relation to organic fruit in general.