Programa de Pós-graduação em Agronomia

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Fertilizantes organominerais granulados na produção de mudas de espécies florestais em dois tipos de tubetes
(Universidade Federal de Goiás, 2017-02-23) Cardoso, Aline Assis; Leandro, Wilson Mozena; http://lattes.cnpq.br/9052207260053937; Brasil, Eliana Paula Fernandes; http://lattes.cnpq.br/7324619074753727; Brasil, Eliana Paula Fernandes; Borges, Jácomo Divino; Calil, Francine Neves; Ucker, Fernando Ernesto; Corcioli, Graciella
The formation of seedlings destined to the implantation of forest stands for the production of wood and mixed stands for the purpose of environmental preservation and/or recovery of degraded areas is related to the level of efficiency of the substrates. Organomineral fertilizer is feasible for both small and medium-sized producers as well as for large producers and rural entrepreneurs. In addition to the financial benefit from reduced costs, and the physical and biological benefit of soil, with the highest input of nutrients and organic matter, organomineral fertilization also has an environmental advantage. This fertilizer is produced from organic waste as crop residues and by-products from the industry. The general objective is to produce granular organomineral fertilizers with the use of an accelerator biocatalyst in order to be used in the production of seedlings of forest species, being evaluated their physical, chemical and biological attributes, measuring the phytotechnical aspects and nutrient concentration in the plants of forest species. The conduction was carried out in conventional system (polyethylene tubes) in comparison to the biodegradable tubes. The experiment was carried out in Goianira, GO. The research was carried out in three stages, the first one being the preparation of the agroindustrial residues to compose the mixtures and to generate the organomineral fertilizer. For the composition of the organic compounds, four types of agroindustrial residues were used: sugar cane bagasse, sugar cane filter cake, ashes, vinasse and decomposing microorganisms (use of biocatalyst). The second stage was the production of granulated organomineral fertilizer. The organic compounds (types I and II) produced in the first stage were naturally dried with the use of solar radiation to reduce humidity by 10% and subsequently received mechanical treatment through grinding/milling to produce a granulometric fraction in Powder form. The third step was the production of Acacia mangium, Khaia ivorensis and Eucalyptus grandis seedlings in greenhouse, and the experimental design was randomized blocks in factorial scheme 7 x 2, the means were compared statistically using statistical software SISVAR. The organic compound type I presents statistically superiority in the parameters organic matter, organic carbon and Carbon/Nitrogen ratio. Organic matter (OM) is formed of organism, plant and animal waste, decomposing. The organomineral A and organomineral B fertilizers stand out positively among the others, in relation to the organic matter and organic carbon contents. Height and stem diameter shows better results in the conventional system, than the Biodegradable system. The conventional tube provides greater accumulation of macronutrients in the acacia, mahogany and eucalyptus seedlings when compared to the biodegradable ones. The biodegradable tube provides greater accumulation of iron in some treatments in the acacia, mahogany and eucalyptus seedlings, and for the other micronutrients the greater accumulation was in the conventional tube.
Vermicompostagem de lodo de curtume na cultura do tomateiro irrigado com água residuária de esgoto doméstico
(Universidade Federal de Goiás, 2016-02-26) Cunha, Ananda Helena Nunes; Araújo, Fernando Godinho de; Pinto, Guilherme Malafaia; Brasil, Eliana Paula Fernandes; Leandro, Wilson Mozena; Borges, Jácomo Divino; Pinto, Guilherme Malafaia; Vieira, Jonas Alves
This study developed different experiments in greenhouse conditions, which, in general, sought to evaluate the use of vermicompost of tannery sludge and domestic sewage in tomato (Solanum lycopersicum L.). The first study evaluated the vermicomposting tannery sludge mixed with cattle manure, poultry litter, sugarcane and rice husk ash in different proportions, in order to produce vermicompost with high nutritional quality, such as waste treatment technology. The results showed that the vermicompost produced with Eisenia foetida present in most parameters assessed in treatment, statistical differences on the treatments, and the comparison made between the initial and final values. The final concentrations of the variables N, P, K, Ca, Mg, and Ni were, in general, larger than the initial concentrations for all treatments, favoring a final destination environmentally suitable for tannery sludge, since the results allowed the use of these as fertilizer for later plant nutrition. In general, vermicomposts had C/N, chromium, nitrogen, pH, copper, nickel and lead appropriate technical specifications of Instruction MAPA and CONAMA resolution, highlighting the T1 (100% EB) and T8 (25% LC + 75% CC). The second study investigated the production of tomato (Solanum lycopersicum L.) variety Santa Cruz Kada (paulista) irrigated with domestic wastewater and fertilized with tannery sludge vermicompost in a typical Dystrophic Red Latosol (Oxisol). From the first study was chosen the best vermicompost seeking fertility and a source of potassium as a criterion of choice. For the results obtained T2 (25% Sludge tannery + rice husk) had a higher weight value of the fruits as well as production (6.68 kg) and longitudinal diameter. For pH values of tomato fruits stands T4 (50% Sludge tannery + Grey cane) value of 4.40, which does not differ from other treatments, except for T1 (25% Sludge tannery + manure beef). For different types of water (wastewater and water supply) it is observed that the T3 (50% Sludge tannery + bovine manure) and T5 (conventional fertilization) have higher values of pH and Brix. For the time it was observed that there was no interaction between the sources of variation "treatments" and "water". According to nutritional assessment, only boron showed values below critical levels, which does not hurt production. The thirtd study aimed to evaluate the effect of tannery sludge vermicompost in chemical properties of soil cultivated with tomato and irrigated with wastewater. As shown in the results the addition of vermicomposto, mainly in the addition of T2 = 25% + LC 75% of rice husk and T4 = 50% + LC 50% cane ash, increasing concentrations of soil chemical properties, favoring this condition as soil conditioner even after the tomato crop. Thus, it is concluded that the tannery sludge vermicompost mixed with different substrates are important sources of nutrients for the tomato crop favored by irrigation domestic sewage. However, we suggest caution in the use of these residues in agricultural reuse for environmental preservation, since there may be excess nutrients when applying vermicompost combined with the domestic sewage, the latter should be used to complement the made fertilization. The increase of nutrients in the soil, since significant increases were observed in all the elements, demonstrating viability as biotechnology disposal of waste must be observed.
Atributos químicos do solo de várzea tropical cultivado com arroz irrigado em razão do manejo do nitrogênio
(Universidade Federal de Goiás, 2016-07-29) Gonçalves, Gustavo de Melo Oliveira; Brasil, Eliana Paula Fernandes; http://lattes.cnpq.br/7324619074753727; Brasil, Eliana Paula Fernandes; Silva, Mellissa Ananias Soler da; Leandro, Wilson Mozena; Santos, Alberto Baêta dos
In the last years, due to the government effort, especially in the Tocantins State, there have been significante increase on flooded rice production areas. However, there are few studies about nitrogen sources and doses in that region, which could improve the nitrogen efficiency use and provide higher incomes for farmers. This study aimed to determine the effects of different sources and doses of nitrogen in flooded lowland soils in the pH, redox potential and the concentration of ions in the soil solution in order to obtain the economicallyand environmentally best mineral nitrogen source and dose. The samples were collected in the 2014/2015 season at the Embrapa Rice and Beans Experimental Field - Palmital Farm-, in a Dystric Gleysol. The design was a complete randomized blocks, with four replications, two sources of nitrogen (common urea and slow release urea), three nitrogen rates (30, 70, 150 kg ha-1), and a control, without any N application.Soil solution samples were collected weekly, during the flooded period in rice cultivation, BRS Catiana genotype. The pH analysis and Eh (redoxpotential) were immediately read, just after the soil solution sampling, in the field, and thenHCl (2M) acidified,, and immediately frozen for later analysis of the following ions: Ca, Mg, K, Fe, Zn, Mn, MOS, NO3- and NH4+. The sources used did not affect the release of nutrients dynamics to the soil solution. The anaerobic condition caused changes in the Eh and ions solubility in the soil solution. The doses applied changed Ca and MOS concentrations in solution, and the dose of 150 kg ha-1 N showed the highest values for both.
Qualidade de mudas de eucalipto e acácia em substratos de resíduos agroindustriais
(Universidade Federal de Goiás, 2016-03-14) Jesus, Roberta Paula de; Brasil, Eliana Paula Fernandes; http://lattes.cnpq.br/7324619074753727; Brasil, Eliana Paula Fernandes; Leandro, Wilson Mozena; Arantes, Nara Rúbia de Morais; Ferreira, Luciana Domingues Bittencourt; Sousa, Ricardo Fernandes de
Demand for quality seedlings of forest species is becoming increasingly widespread, due to increased planted area and the restoration of degraded environments. Based on the importance of substrate for seedling production and use of renewable materials in its formulation, the aim of this work was to characterize the physical properties of renewable substrates composed by coconut fiber and composted sludge and evaluate the feasibility of using these substrates in the production of seedlings of Eucalyptus grandis and Acacia mangium. Therefore, there were three studies. The sources of organic materials used for the composition of the substrates were commercial substrate, coconut fiber and composted sludge (waste from the tomato processing industry). The treatments were: commercial substrate; commercial substrate + 10% sludge; commercial substrate + 20% sludge; commercial substrate + 40% sludge; coconut fiber; Coconut fiber + 10% sludge; coconut fiber + 20% sludge and coconut fiber + 40% sludge. In the first study were performed following physical analysis of formulated substrates: volume density, particle density, porosity, air space, readily available water, buffering water, available water, the remaining water of 100 cm and water retention capacity. It was observed that treatments showed a great variability in the physical characteristics and no advantage in doing mixtures to obtain a more efficient substrate on these properties. As a conditioner of the mixes, the composted sludge promoted increased density, reduced porosity and increased water retention capacity. In the second study, parameters relating to the growth of Eucalyptus grandis seedlings were evaluated, and the third study evaluated parameters relating to the growth of Acacia mangium seedlings. The evaluated parameters were: plant height, stem diameter, dry matter of aerial part and radicial part, ease of removal of the cartridge seedlings, roots aggregation of the substrate and chemical analysis of the aerial part of the plant. The results showed that the use of sludge and composted coconut fiber as substrate for the production of Eucalyptus grandis and Acacia mangium seedlings is a promising alternative because it resulted in the adequate development of the same. The use of organic waste in the substrate composition for the production of forest trees seedlings is a technically feasible option and is an alternative to recycling and use of by-products of agribusiness.
Substância húmica e fontes de fósforo em latossolo vermelho e neossolo quartzarênico
(Universidade Federal de Goiás, 2015-03-31) Lôbo, Lucas Morais; Leandro, Wilson Mozena; http://lattes.cnpq.br/9052207260053937; Brasil, Eliana Paula Fernandes; http://lattes.cnpq.br/7324619074753727; Brasil, Eliana Paula Fernandes; Leandro, Wilson Mozena; Borges, Lino Carlos; Corcioli, Graciella
Processes of phosphorus adsorption in soil diminish the availability of this nutrient to plants. Humic and fulvic acids present in humic substances (SH) can block the phosphorus adsorption sites in the soil. Thus, this study aimed to verify the effect of adding doses of a SH, availability of P in two types of soils with different adsorption capacities. The treatments consist of four levels of SH (0, 100, 200 and 400 kg.ha-1), two phosphorus sources (Triple superphosphate – SFT and Natural Reactive phosphate – FNR), and three assessment time (7, 14 and 28 days) in two soil types (Red Latosol – LV and Quartzipsamment – NQ). The application of SH altered the availability of P in different soils. Statistical analysis of the data showed a significant difference (P<0,05) for all factors. In LV the P availability increased for both sources, with increasing SH dose up to 14 days. At 28 days the P-available decreases, with no significant difference between doses, but remains superior to treatment without addition of SH. In the NQ the P-available decreases from the addition of the doses of 200 and 400 kg ha-1 of SH up to 14 days of incubation. After 28 days with the degradation of SH values of P-available for these doses begin to increase. These results indicate that the use of SH is effective in increasing the availability of phosphorus in different soils.
Efeitos de gesso agrícola e corretivos de acidez do abacaxizeiro cultivado em Latossolo e Plintossolo
(Universidade Federal de Goiás, 2015-05-21) Muniz, Edgard Alves; Leandro, Wilson Mozena; Brasil, Eliana Paula Fernandes; http://lattes.cnpq.br/7324619074753727; Leandro, Wilson Mozena; Borges, Jácomo Divino; Resende, Cláudia Fabiana Alves; Ferreira, Luciana Domingues Bittencourt; Cunha, Patrícia Pinheiro da
The latosolic Concretionary Petric Plintosol is the less fertile soil in the bioma Cerrado. Making it to produce food in order to contribute to the Brazilian agribusiness, turns into a great challenge for Science. In addition to this fact, the\pineapple fruits exports are important incomes sources for our Country. For this reason, the present work aimed to assess effects of application, on soil, of calcium carbonate, calcium & magnesium carbonate and calcium sulfate, on productivity of pineapple plant (Ananas comosus L. Merril) var. Pérola cultivated in typical Distrocohesive Yellow Latosol and latosolic Concretionary Petric Plintosol on a same topossequence of Cerrado bioma. Soon after planting, it were applied on both soils, the following equivalent doses\(kg ha-1): on the latossol area – 2000, 2000 and 1000; and on the plintossol area – 3000, 3000 and 1500; of calcium carbonate, calcium & magnesium carbonate and calcium sulfate, respectively. As effects, the fruits production averages (t ha-1), in both soils were: 8,32; 12,94; 13,82; 15,09; 5,02; 12,60; 14,11; e 14,82, respectively, in the same sequence above. The essays were set up in 2010, in a region of Anápolis, Goiás State, latitude 16º19ˈ 36 ̎ S, longitude 48º57ˈ 10 ̎ W and altitude 1017 m. The yearly pluviosity average is 1.200 mm, and the temperature oscillates between 21 and 35ºC; the climate is classified as Aw according to Köppen system. The harvest was achieved in 2012. The experimental design was in randomized blocks. Each plot measured 1,20 x 6,60 m and were four the number of treatments with five replications. The three products, in the mentioned equivalent doses, induced the latosolic Concretionary Petric Plintosol studied to reach a pineapple Pérola production capacity equivalent to the typical Distrocohesive Yellow Latosol. Calcium sulfate, calcium carbonate and calcium & magnesium carbonate, individually, increased the tenor of changeable bases in the upper layers of both soils, wich made it possible to obtain greater pineapple Pérola yielding.
Atributos fitotécnicos e bioquímicos de solo com doses e fontes de ureia na cultura do arroz de terras altas
(Universidade Federal de Goiás, 2016-10-31) Oliveira, Vinícius Almeida; Flores, Rilner Alves; http://lattes.cnpq.br/6161143914254137; Brasil, Eliana Paula Fernandes; http://lattes.cnpq.br/7324619074753727; Brasil, Eliana Paula Fernandes; Nascimento, Abadia dos Reis; Leandro, Wilson Mozena; Corcioli, Graciella; Santos, Felipe Corrêa Veloso dos
Rice cultivation upland stands out in the Cerrado region and on the climatic conditions of the region, management studies of nitrogen fertilization become essential for greater efficiency in the use of this nutrient. The aim of this study was to evaluate the response of cultivating upland rice BRS-Emerald to different nitrogen sources and doses in the Brazilian Cerrado. The experiments were conducted in Goiânia, GO in the agricultural years of 2013/2014 and 2014/15 in Oxisol. The experimental design was a randomized complete block in a factorial 3x4 + 1 (3 fonts, 4 doses and control without N) with four replications. The nitrogen sources used were conventional urea (Uconv); urea treated with NBPT® urease inhibitor (NBPT) and coated urea Kimcoat® polymers (N+) tested in doses 30, 60, 90 and 120 kg ha-1 of nitrogen in rice upland BRS Esmeralda spacing 0.5 m between rows. For the characteristics evaluated nitrogen source NBPT was superior to other sources in the development of rice cultivar BRS Esmeralda. For the characteristics evaluated the soil quality bioindicators little or nothing were influenced by nitrogen source, the biomarkers were more influenced by the planting period and doses of nitrogen applied.
Fertilizantes organomineral e mineral: aspectos fitotécnicos na cultura do tomate industrial
(Universidade Federal de Goiás, 2015-03-31) Rabelo, Kassia Cristina de Caldas; Machado, Roriz Luciano; http://lattes.cnpq.br/5560467728818263; Brasil, Eliana Paula Fernandes; http://lattes.cnpq.br/7324619074753727; Brasil, Eliana Paula Fernandes; Leandro, Wilson Mozena; Borges, Lino Carlos
In recent years there was an increase in the diversification of vegetable crops, especially for cultivation in greenhouses and organic fertilizers. The tomato sets one of the most vegetables produced in the world, and its use is justified because it is a food that has great use in industrial and semi-processed products. The use of waste poultry as a source of organic matter into fertilizer, prevents it from becoming a pollutant if handled improperly. To join the inorganic formulas are in organomineral fertilizers, which increase the efficiency of mineral fertilizers, providing reduced spending on fertilizers and promoting the improvement in soil quality. The use of organomineral fertilizer is one of the strategies that provide greater crop yield and better quality. In this context, the aim of this work was to evaluate the efficiency of this granulated organomineral fertilizer enriched with monoammonium phosphate (MAP) in the processing tomato crop. When using the organomineral fertilizer compared to mineral fertilizer, there was a fresh mass increase of fruit, number of fruits per plant and yield. When analyzing the chlorophyll content the growing season proved to be the most appropriate to evaluate your changes in tomato leaves. But at conditions studied, the organomineral fertilizer presented agronomic performance similar to mineral fertilizer. In economic terms is justified the use of this fertilizer for having a lower cost than mineral fertilizers.
Sistema Integrado de Diagnose e Recomendação (DRIS) em produção de mudas de citrus
(Universidade Federal de Goiás, 2014-02-19) Rezende, Cláudia Fabiana Alves; Leandro, Wilson Mozena; Brasil, Eliana Paula Fernandes; http://lattes.cnpq.br/7324619074753727; Brasil, Eliana Paula Fernandes; Souza, Eli Regina Barboza de; Leandro, Wilson Mozena; Nascimento, Abadia dos Reis; Gonçalves, Helenice Moura
One of the most competitive and growth potential of the agribusiness sector is the citrus industry. Citrus nurseries grown in protected cultivation, constitutes one of the foundations of this growth. To achieve high productivity in any culture, there are a number of factors, among which the supply of nutrients, in the manner and in adequate quantity becomes paramount. The Diagnosis and Recommendation Integrated System (DRIS) was developed to provide a diagnosis of the nutritional status of cultivated plants, helping the decision on fertilizer recommendation for crops, being based on the balance of essential nutrients to plants. The objective of this study aimed to obtain a database of foliar analysis for establishment of DRIS and assess the nutritional status of two rootstocks (Rangpur lime and Swingle Citrumelo) and two combinations of citrus seedlings (Orange Pear/Rangpur lime and Orange Christmas /Swingle Citrumelo) grown in ‘Goiás’ collections hundred twenty leaf samples for rootstocks and one hundred and twenty leaf samples for ready seedlings were performed . With the data obtained organized a database. The database was analyzed by the tracks or Critical Levels of Concentration and DRIS method by method. Bands Concentration diagnosed for the Rangpur Lime rootstock , the most limiting nutrient deficiency were Mg and Zn and excess P and Fe. For Citrumelo Swingle, limiting disability K, S, Mn, Cu and Zn, excess Fe and N. For the citrus nurseries K, S and Zn were the nutrients most limiting nutrient deficiency and P, Fe, Mg and N in excess. Zn is the nutrient most often deficiency and Fe excess among rootstocks and citrus nurseries. The DRIS diagnosed S as the most limiting disability and N as the most limiting for excess, and still showed higher sensitivity for diagnosing nutritional problems.
Isolados de rizóbios capturados por genótipos silvestres de feijoeiro: obtenção, morfologia e uso de fontes de carbono
(Universidade Federal de Goiás, 2013-02-28) Sampaio, Fernanda Bueno; Ferreira, Enderson Petrônio de Brito; Brasil, Eliana Paula Fernandes; http://lattes.cnpq.br/7324619074753727; Leandro, Wilson Mozena; Ferreira, Luciana Domingues Bittencourt; Brasil, Eliana Paula Fernandes
The bean is a legume widespread throughout the country and an important source of protein in human food. Inoculation of legumes with rhizobia able to perform biological nitrogen fixation (BNF), has been widely discussed, based on studies indicating its feasibility for use in agriculture, since the BNF decreases partly environmental liabilities generated by high consumption of nitrogen fertilizer. The use of wild bean genotypes seeks greater diversity of rhizobia for isolation and study of the ability of BNF, which may result in greater specificity for symbiotic bean crop. The objective was to obtain and characterize the morphology and on the use of carbon sources captured populations of rhizobia in wild bean genotypes, soil from the states of Goiás, Minas Gerais and Paraná. Soil samples were collected from six areas in the depth of 0-20 cm for conducting chemical and physical analyzes and an test was conducted in a greenhouse in pots of 3 liters sterilized with 11 wild bean genotypes to obtain the isolates. Were obtained 523 isolates of rhizobia and selected 231 isolates, 76 of Goiás, Minas Gerais 99, and 56 of Paraná. A total of seven species of bacteria as reference strains, three of the genus Rhizobium tropici (SEMIA 4077, SEMIA 4080 and SEMIA 4088), three of the genus Rhizobium leguminosarum bv. phaseoli (BR266, BR351 and BR281) and one of the genus Rhizobium multihospitium (R82), for comparison with the data obtained. The isolates were characterized morphologically and on the use of carbon sources. From the information similarity matrices were generated using Jaccard coefficient being generated for the states of Goiás, Minas Gerais and Paraná, similarity dendrograms by UPGMA clustering method, using the software NTSYS-pc, version 1.8. The 523 isolates were obtained from nodules of wild bean genotypes with the predominance of isolates that acidify the culture medium and fast growth, and the solos from Araucária and Prudentópolis produce greater amount of mucus that of Jussara, Nova Veneza, Uberlândia and Unaí. The rhizobia isolates obtained from soils of Goiás and Minas Gerais exhibit greater phenotypic diversity than those from soils of Paraná. Usage analysis of carbon sources revealed that rhizobia isolates obtained from soils of Goiás have higher metabolic diversity. Overall, the largest number of isolates grouped with the reference strains, especially with the inoculant strains used as the common bean (SEMIA 4080, SEMIA SEMIA 4088 and SEMIA 4077), indicating that these isolates have metabolic characteristics similar to these strains.
Seleção de genótipos de cana-energia em produção orgânica e convencional e resposta a adubação
(Universidade Federal de Goiás, 2020-03-27) Santos, Tamara Rocha dos; Leandro, Wilson Mozena; http://lattes.cnpq.br/9052207260053937; Brasil, Eliana Paula Fernandes; http://lattes.cnpq.br/7324619074753727; Leandro, Wilson Mozena; Nascimento, Abadia dos Reis; Ferreira, Gislene Auxiliadora; Silva, Vanderli Luciano da; Calil, Francine Neves
The objective of this work was to select energy cane genotypes in different agricultural production systems (organic and conventional) and to evaluate the influences of fertilization on some phenotypic and agronomic characteristics in first and second year harvest. The two field studies were carried out in an experimental area belonging to the Federal University of Goiás, in Goiânia-GO, one of the experiments being carried out in an area certified as organic by IBD (certificate GO-022-001) and the other in a conventional area. A greenhouse test was also set up. The soils in the experimental areas (organic and conventional) are classified as Latossolo Vermelho Distroférrico and the one used in the greenhouse is the Latossolo Vermelho Ácrico. In the field experiments, the test was carried out in plots consisting of 7.5 m2 per plot with borders of 1.5 m (5 meters in length, spaced in 1.5 m) with the planting of sheets containing three buds in 30 cm furrows. depth, with three sheets per meter. The experimental design was a randomized block with five replications. And in a field experiment, the treatments were: T1- Organic fertilization (200 m3 / ha of biofertilizer) and T2- Control (without fertilization) and the second factor, the genotypes: UFPR 1274, UFPR 1230, UFPR 12180 and UFPR 127004. In the greenhouse, the experimental design was randomized blocks, in a factorial scheme, 2x5, the first factor being: T1- Nitrogen fertilization (50 mg / kg of urea) T2- Control (without fertilization) and the second factor, the genotypes: RB 127008, UFPR 1230, UFPR 1213, UFPR 1274 and a commercial cultivar with four replications. 24 energy cane genotypes were used, obtained from the Energy Cane Genetic Improvement Program at the Federal University of Viçosa (PMGCA / UFV / RIDESA). The agronomic and phenotypic variables carried out in the field studies were: content of soluble solids (Brix°), plant color, plant height, stem diameter and total biomass. The variables evaluated in the greenhouse study were: plant height, stem diameter; root growth, root volume and leaf area. It is concluded that the energy cane genotypes evaluated show high productivity, showing great potential for planting in conventional system. The genotypes with the highest performance in terms of biomass are: RB 127004, UFPR 12157, UFPR 1265, UFPR 12180 and UFPR 1277 in the conventional system and RB 127004 and RB 127035, UFPR 1273, UFPR 12180 and RB 127024 in the organic system. The phenotypic variable that correlates with biomass in the two production systems is the stem diameter. The energy cane genotypes evaluated are not responsible for chemical nitrogen fertilization or organic fertilization. The genotypes UFPR 1274 and the commercial variety show higher performances in terms of leaf area under nitrogen fertilization and the genotypes with higher performances in terms of biomass are: RB 127008 and UFPR 127004 under organic fertilization.
Atributos químicos e biológicos do solo em áreas sob diferentes sistemas de manejo no estado de Goiás
(Universidade Federal de Goiás, 2020-04-17) Silva, Larissa Gabriela Marinho da; Leandro, Wilson Mozena; http://lattes.cnpq.br/9052207260053937; Brasil, Eliana Paula Fernandes; http://lattes.cnpq.br/7324619074753727; Leandro, Wilson Mozena; Calil, Francine Neves; Teixeira, Welldy Gonçalves
Agroforestry systems have been one of the most promising options for the production of African mahogany, as they reconcile the planting of forest species with agricultural crops and / or animal husbandry, providing environmental, social and economic benefits. The objectives of this research was to evaluate the dynamics of the chemical and biological attributes of the soil in agroforestry systems with African mahogany, in comparison with soil under conditions of native vegetation in the municipality of Nazário - GO. The treatments were composed of three soil management systems: S1: African mahogany in monoculture since 2013; S2: African mahogany in an agroforestry system implanted since 2015, grown with cocktails of different species; S3: African mahogany in an agroforestry system implemented since 2013, grown with cocktails of different species. For the control treatment, the soil in the forest with native vegetation of the Cerrado (Mata) was evaluated. The chemical and biological attributes of the soils were analyzed in a randomized block design, with six replications. The results obtained indicate that the different management systems influenced the chemical attributes of the soil. The monoculture of African mahogany provided the largest accumulation of organic matter in the soil when compared to agroforestry systems and native vegetation, demonstrating its potential for the cultivation of this forest species. There were distinct changes in the biological attributes of the soil by each management system. The management systems with African mahogany in an agroforestry system implemented in 2015 (S2) and in 2013 (S3) had the highest carbon content of microbial biomass and basal soil respiration, respectively. The native forest had the highest nitrogen content in the microbial biomass. And African mahogany in a monoculture system had the highest total carbon content.
Frações da matéria orgãnica e atributos biológicos do solo em veredas conservadas e antropizadas no bioma cerrado
(Universidade Federal de Goiás, 2013-08-14) Sousa, Ricardo Fernandes de; Leandro, Wilson Mozena; Brasil, Eliana Paula Fernandes; http://lattes.cnpq.br/7324619074753727; Madari, Beáta Emoke; Leandro, Wilson Mozena; Borges, Jácomo Divino; Figueiredo, Cícero Célio de; Brasil, Eliana Paula Fernandes
Veredas (a type of wetland) are humid ecosystems, generally associated to hydromorphic soils and shallow water table, which occur frequently in the neighborhood of the springs and watercourses in the Cerrado region. The objective of this work was to study the soil of wetlands located in conserved and altered environments (agricultural areas and pastures), by determining the organic matter fractions, and biological attributes of the soil. The study was carried out in the central region of Cerrado biome, in the state of Goiás (Brazil), in wetlands situated in the City of Bela Vista de Goiás. Three wetlands were selected for soil sampling, as follows: a preserved wetland, surrounded by natural vegetation (cerrado); an area disturbed, with the occurrence of pasture around it; and another wetland also disturbed, with the occurrence of annual crops (agriculture) in its surroundings. The samplings were taken during the dry season, in months of July and August of 2012, along reference lines arranged according to their position in the slope, in the upper, middle and lower position, in approximate direction of the drain line of the wetland. Samples were collected at two depths: 0-10 cm and 10-20 cm. The variables studied were: Total soil organic carbon and nitrogen, and soil C:N ratio; C and N contents, and C:N ratios of the particulate and mineral-associated organic matter; fulvic acid, humic acid and humin, and humic acids to fulvic acids ratio, C contents of humic substances and its ratio to total soil organic carbon; carbon and nitrogen contents, and C:N ratio of the microbial biomass; microbial quotient; microbial biomass N to soil total nitrogen ratio; basal soil respiration; metabolic quotient; and fluorescein diacetate (FDA) hydrolytic activities in soil. In the lower position of slope the total soil organic C and N contents (in both depths), and levels of organic carbon in particulate organic matter, humic substances and soil microbial biomass (to 10 cm depth only), are smaller in the agriculture surrounding environment. Also in the lower position of slope in the topsoil, the soil total N, and N levels in particulate organic matter and microbial biomass are significantly larger in the wetland neighboring pastures. In the topsoil, the organic C contents of the mineral-associated soil organic matter fraction are larger in the conserved ecosystem, in all slope positions. In general, the farming in the vicinity of the wetlands promoted changes in soil microbial and biochemical attributes, as well as those related to soil organic matter in these ecosystems, with changes in C and N biogeochemistry processes. These changes are especially pronounced in the lower position of the slopes, with clear differences also between this lower zone and the highest slope positions (upper and middle) of the wetlands.

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