Mestrado em Agronomia (EA)

URI Permanente para esta coleçãohttp://200.137.215.59/tede/handle/tde/180

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Agora exibindo 1 - 20 de 232

Caracterização bioquímica e funcional de isolados bacterianos com potencial de promoção de crescimento e biocontrole em arroz
(Universidade Federal de Goiás, 2026-02-26) Mendonça, Kamilla Rasmussem; Filippi, Marta Cristina Corsi de; http://lattes.cnpq.br/0029536556461484; Ferreira, Adriane Wendland; Gonçalves, Ariany Rosa
Rice (Oryza sativa L.) plays a crucial role in global food supply and is cultivated under two main production systems: upland rice and irrigated rice. Upland rice is grown under nonflooded conditions, relying primarily on rainfall for its development. However, the productivity of this system faces challenges due to the occurrence of diseases such as rice blast, brown spot, and sheath blight, as well as periods of drought. In this context, this study highlights the importance of plant growth-promoting rhizobacteria (PGPR) in mitigating biotic stresses, such as diseases, and abiotic stresses, such as water deficit, as well as in promoting rice growth. The objective of this study was to biochemically and functionally characterize the potential of 13 bacterial isolates from the Embrapa Rice and Beans collection in promoting rice plant growth and suppressing major diseases affecting the crop under controlled laboratory and greenhouse conditions. The specific objectives were to compare the efficiency of the isolates in producing acid and alkaline phosphatases; solubilizing phosphorus (P), potassium (K), and zinc (Zn); producing extracellular enzymes such as amylase, cellulase, and lipase; producing indole-3-acetic acid (IAA), biofilm, and biological nitrogen fixation; evaluating the efficiency of extracted biofilm in promoting plant growth; assessing the antagonistic activity of the isolates against Pyricularia oryzae, Bipolaris oryzae, and Rhizoctonia solani; determining compatibility among selected isolates; and detecting morphological changes induced in the root system by the bacteria and their derivatives. The results demonstrated the ability of different isolates to solubilize phosphorus, zinc, and potassium, as well as to produce enzymes, biofilm, and exopolysaccharides (EPS), traits that contribute to improved plant nutritional efficiency and adaptation to adverse conditions. Antagonism assays indicated that isolates BRM69515 and BRM69524 exhibited strong activity against phytopathogenic fungi, reinforcing their applicability as biocontrol agents. In in vitro assays with rice seedlings, isolate BRM69524, either alone or combined with EPS, stood out in promoting shoot and root growth, while BRM69521 showed remarkable performance in inducing very fine roots. EPS also significantly contributed to plant development across all evaluated parameters. Overall, these findings highlight the multifunctional nature of the studied bacterial isolates and reinforce their potential as promising bioinoculants to reduce dependence on chemical inputs and promote more sustainable agricultural systems.
Doses de pó de basalto combinado com inoculação com Rhizobium tropici e em coinoculação com Bacillus subtilis na cultura de feijão
(Universidade Federal de Goiás, 2026-02-26) Alves, Gessiele Pinheiro da Conceição; Teixeira, Itamar Rosa; https://lattes.cnpq.br/3448759504226115; Teixeira, Itamar Rosa; Santos, Fenelon Lourenço de Sousa; Leandro, Wilson Mozena
The common bean is a crop of the Fabaceae family of great economic importance, it has high nutritional requirements and relies heavily on chemical fertilizers for its production. In this context, it´s necessary to advance sustainable practices in soil management and crop nutrition. Technologies such as soil remineralization and the use of growth-promoting microorganisms can increase yields and reduce production costs. The objective of this study was to evaluate the synergistic impact of remineralization with basalt powder, combined with the use of an inoculant based on R. tropici and B. subtilis in common beans. The experiment was conducted during the 2024/2025 summer growing season, using a randomized block design (RBD) in a 4 x 2 x 2 + 1 factorial scheme, with four replications. The treatments consisted of four doses of basalt powder (0, 2, 4, and 6 t ha⁻¹), with or without seed inoculation with R. tropici and coinoculation with B. subtilis, plus an additional treatment involving nitrogen fertilizer application. Nodulation efficiency and the plants’ morphophysiological characteristics were evaluated at the R6 stage, while at the end of the growing season, grain components and yield were determined. The application of 6 t ha⁻¹ of basalt powder resulted in the highest grain yield (3.028 t ha⁻¹), demonstrating its potential as a remineralizer when combined with R. tropici + B. subtilis coinoculation of bean seeds, confirming the synergy. It can be concluded that co-inoculation with R. tropici and B. subtilis contributes to improved nodulation, plant growth, and bean yield, in addition to being a low-cost and sustainable alternative, making it particularly suitable for bean cultivation.
Efeito de bioagentes, tratamento quimico das sementes e descompactação do solo no manejo da podridão vermelha da raiz em soja.
(Universidade Federal de Goiás, 2025-10-27) Parreira, Leticia Daniella Martins; Okura, Monica Hitomi; Lobo Junior, Murillo; https://orcid.org/0000-0002-3681-4570http://lattes.cnpq.br/3352833548668460; http://lattes.cnpq.br/3352833548668460; Lobo Junior, Murillo; Marques, Eder; Zito, Roberto Kazuhiko; Nascente, Adriano Stephan; Rocha, Mara Rubia da
The expansion of soybean cultivation in Brazil, combined with inadequate phytosanitary practices, has favored the spread of soil-borne diseases caused by fungi such as Fusarium spp. and plant-parasitic nematodes, which form pathogen complexes with still poorly understood interactions. In light of the increasing incidence of Fusarium diseases on soybeans and the need for integrated management strategies for root diseases, this study aimed to evaluate the management of red root rot in soybean using bioagents and complementary agronomic practices, proposing sustainable solutions for the crop. The research was carried out under experimental field during the 2023/2024 and 2024/2025 growing seasons, with the cultivar 80I82RSF IPRO (Brasmax Olimpo IPRO). The variables consisted of the disease severity index (DSI), nematode population density, crop stand, and yield. In the first chapter, red root rot and nematode management were assessed in a randomized block design with a 2 × 3 × 2 factorial arrangement, considering soil management (compacted and decompacted), application of Trichoderma harzianum BRM 29600 (on seeds, in-furrow, and untreated control), and seed chemical treatment (with and without fungicide). The results submitted to ANOVA indicated that in the 2023/2024, the lowest DSI were observed in treatments with infurrow spraying of T. harzianum on compacted soil. Trichoderma harzianum BRM 29600 favored higher yield, especially when combined with chemical seed treatment. No differences were observed in 2024/2025. Principal component analysis (PCA) revealed an inverse correlation between DSI and yield, highlighting the effectiveness of biological control. In the following season, DSI exceeded 65% in all treatments, but yield was higher than in the previous year due to more favorable climatic conditions. The combination of biocontrol, chemical treatment, and proper soil preparation proved promising for disease mitigation. The second chapter evaluated nine isolates of Trichoderma spp. and two entomopathogenic fungi (Metarhizium anisopliae and Cordyceps javanica) applied to seeds. The 2023/2024 results indicated increased yield and reduced DSI with the use of bioagents, particularly the de Trichoderma sp. BRM29675 isolate. In 2024/2025, DSI increased and treatment differences were not significant, although overall yield exceeded 5000 kg/ha. The study reinforces the importance of integrated management to manage soybean root diseases, and evidences the impact of environmental conditions on crop yield, disease severity and treatment efficacy.
Inoculação e reinoculação via folia com Bradyrhizobium japonicum, Bacillus subtilis e Aschophyllum nodosum na cultura da soja
(Universidade Federal de Goiás, 2026-02-27) Sbroggio Filho, Alexandre Marcos; Flores, Rilner Alves; Teixeira, Itamar Rosa; Teixeira, Itamar Rosa; Silva, Alessandro Guerra da; Momesso, Letusa
Innovations in soybean cultivation have been constant over the years, and currently, biological management is gaining more and more visibility, aiming to meet the nutritional demand of soybeans, especially the need for nitrogen, the nutrient most required by the crop, in addition to generating a more sustainable activity with lower financial cost. This study aims to evaluate the efficiency of seed inoculation and reinoculation of soybeans with B. japonicum associated with co-inoculation with B. subtilis and/or seaweed extract based on A. nodosum. An experiment was conducted in the 2024/2025 season, using a randomized block design, with four replications. The tested treatments were: Treatment 1 (T1): B. japonicum inoculated on the seed; Treatment 2 (T2): Co-inoculation of B. japonicum + B. subtilis on the seed; Treatment 3 (T3): Inoculation of B. japonicum + A. nodosum seaweed extract on the seed; Treatment 4 (T4): Co-inoculation of B. japonicum + B. subtilis + A. nodosum on the seed; Treatment 5 (T5): B. japonicum inoculated on the seed and reinoculated as a topdressing; Treatment 6 (T6): Co-inoculation of B. japonicum + B. subtilis on the seed and reinoculated as a topdressing; Treatment 7 (T7): Inoculation of B. japonicum + A. nodosum seaweed extract on the seed and reinoculated as a topdressing; Treatment 8 (T8): Co-inoculation of B. japonicum + B. subtilis + A. nodosum on the seed and reinoculation as a topdressing; Treatment 9 (T9): Control without any inoculation and reinoculation; Treatment 10 (T10): Application of mineral nitrogen fertilizer. It is concluded that the synergy between the microorganisms B. japonicum and B. subtilis constituted the most efficient strategies to maximize soybean productivity under the evaluated conditions, promoting greater accumulations of dry mass, both in the aerial part and the root, high nodulation and photosynthetic capacity, and the addition of the seaweed extract based on A. nodosum to these treatments did not promote visible gains in the crop. The co-inoculation of B. japonicum and B. subtilis with foliar reinoculation (T6) was the most outstanding treatment, as it promoted the greatest accumulation of nodule dry mass (1.35 g/plant) and root dry mass (7.45 g/plant). Treatment T6 also achieved the highest average of pods per plant (106.25) and weight of 100 grains (20.5 g), resulting in a maximum yield of 4,280.25 kg ha-1, surpassing nitrogen fertilization by 51% and the control by 111%. The economic analysis demonstrated that management based on bioinputs showed greater financial efficiency compared to mineral nitrogen fertilization.
Produção e avaliação de mudas de macaúba: inovações no cultivo e estratégias de conservação
(Universidade Federal de Goiás, 2026-02-18) Sousa, Jeniffer Raniely Batista; Mota, Elias Emanuel Silva; https://lattes.cnpq.br/3909234665860652; Souza, Eli Regina Barboza de; https://lattes.cnpq.br/7641431808466123; Souza, Eli Regina Barboza de; Mota, Elias Emanuel Silva; Neri , Luciene Machado da Silva; Calil, Francine Neves
Embargo
Mensuração de serviços ecossistêmicos em sistema agroflorestal: análise a partir de indicadores ambientais
(Universidade Federal de Goiás, 2026-02-27) Pereira, Guilherme Augusto Reges; Calil, Francine Neves; https://lattes.cnpq.br/2520537051838618; Calil, Francine Neves; Schumacher, Mauro Valdir; Brun, Eleandro José
Embargo
Quantificação do sequestro de carbono florestal e da produtividade de grãos em sistema integrado com soja e árvores nativas do cerrado
(Universidade Federal de Goiás, 2026-02-26) Oliveira, Amanda Fernandes de; Calil, Francine Neves; https://lattes.cnpq.br/2520537051838618; Calil, Francine Neves; Campos, Leonardo José Motta; Ferreira, Jorge Luis Sousa
Embargado
Eficiência de adubações na sucessão soja e milho produzida em Goiás
(Universidade Federal de Goiás, 2025-05-30) Almeida, Júlia Maria de Souza; Flores, Rilner Alves; http://lattes.cnpq.br/6161143914254137; Flores, Rilner Alves; http://lattes.cnpq.br/6161143914254137; Collier, Leonardo Santos; http://lattes.cnpq.br/7449368697500123; Marques, Letusa Momesso; http://lattes.cnpq.br/7154180150340351
Embargada.
Detecção precoce do Cowpea mild mottle virus (CPMMV) em plantas de feijão-comum por alterações espectrais e RT-PCR
(Universidade Federal de Goiás, 2023-04-27) Ribeiro, William Rafael; Pinheiro, Patrícia Valle; http://lattes.cnpq.br/1705855482738430; Lobo Júnior, Murillo; http://lattes.cnpq.br/3352833548668460; Lobo Júnior, Murillo; http://lattes.cnpq.br/3352833548668460; Mello, Raquel Neves de; http://lattes.cnpq.br/6216296192318059; Geraldine, Alaerson Maia; http://lattes.cnpq.br/0083813255453278
Embargada.
Atratividade de variedades de arroz para o percevejo da panícula (Oebalus poecilus) e prospecção de voláteis emitidos pelas plantas em diferentes estadios fenológicos
(Universidade Federal de Goiás, 2025-05-23) Rosa, Rayllene Marieta Pires; Barrigossi, José Alexandre Freitas; http://lattes.cnpq.br/5377957113836597; Barrigossi, José Alexandre Freitas; http://lattes.cnpq.br/5377957113836597; Boaventura, Heloiza Alves; http://lattes.cnpq.br/0910895039851819; Godinho, Karina Cordeiro Albernaz; http://lattes.cnpq.br/0894467127708959
Embargado
Biodisponibilidade de herbicidas pré-emergentes em solos andinos e seus impactos na produtividade da soja
(Universidade Federal de Goiás, 2025-02-27) Almeida, Danielle Resende; Calixto, Wesley Pacheco; http://lattes.cnpq.br/9073478192027867; Damin, Virgínia; http://lattes.cnpq.br/7413922413797454; Damin, Virgínia; Correa, Gilmarcos de Carvalho; Leandro, Wilson Mozena
The efficacy of weed control by pre-emergent herbicides depends on the physicochemical characteristics of the molecule, soil attributes, environmental factors, and management practices adopted in the production system. Pre-emergent herbicides can cause phytotoxicity in soybean plants, leading to reduced productivity. Therefore, it is crucial to invest in solutions that ensure better herbicide selection, adjusting the dosage according to soil type while considering the target crop and the history of weed infestations in the area. This approach enables effective weed control without compromising yield. Given this context, the objectives of this study were: 1- To evaluate the bioavailability of the herbicides sulfentrazone, flumioxazin, metribuzin, imazethapyr, and diclosulam in weakly weathered soils; 2- To assess the phytotoxicity and residual control of the pre-emergent herbicides diclosulam, imazethapyr, metribuzin, sulfentrazone + diclosulam, and sulfentrazone at different doses in soybean cultivation. Soil types influenced both the efficacy and phytotoxic potential of the studied herbicides. The herbicides imazethapyr and diclosulam required dose reductions in all tested soils. However, in soil S/A11, the sulfentrazone dose needed to be increased from 200 g a.i. ha⁻¹ to 221.75 g a.i. ha⁻¹, while flumioxazin required an increase from 57.6 g a.i. ha⁻¹ to 95.27 g a.i. ha⁻¹ to achieve 90% control. In soil LE/C6, the flumioxazin dose had to be increased by 103.59% compared to the label recommendation. Furthermore, in soils LE/C6 and H/B22, no dose reduction was observed for sulfentrazone and flumioxazin, respectively. Regarding productivity, differences were observed only among herbicides, with the lowest yields recorded in the diclosulam and metribuzin treatments. Cucumber, wild poinsettia (Chamaesyce hirta), and weed control improved from 15 DAA, influenced by soil moisture. By 90 DAA, all herbicides remained persistent in the soil.
Biologia de Rachiplusia nu (Lepidoptera: Noctuidae) na cultura da soja e utilização de baculovírus para seu controle
(Universidade Federal de Goiás, 2024-12-16) Alencar, Anna Gabriela Gomes de; Godinho, Karina Cordeiro Albernaz; http://lattes.cnpq.br/0894467127708959; Czepak, Cecilia; http://lattes.cnpq.br/7900255230781858; Czepak, Cecilia; Rezende, Janayne Maria; Andrade, Rizia da Silva
Embargada.
Avanço no método LAMP para a detecção de Xanthomonas spp. no processo de produção de mudas de tomateiro do segmento industrial
(Universidade Federal de Goiás, 0025-02-25) Machado, Juliana de Farias; Duval, Alice Maria Quezado; Ferreira, Adriane Wendland; http://lattes.cnpq.br/7196405181790361; Ferreira, Adriane Wendland; Duval, Alice Maria Quezado; Rossato, Maurício; Ferreira, Enderson Petrônio de Brito
Embargado
Aspectos epidemiológicos do mofo-branco em feijão comum
(Universidade Federal de Goiás, 2013-03-26) Santos, Priscila Ferreira dos; Lobo Junior, Murillo; Lobo Junior, Murillo; Cunha, Marcos Gomes; Paula Junior, Trazilbo José de
Embargado
Sistema silvipastoril com forrageira e pequi (Caryocar brasiliense Camb.)
(Universidade Federal de Goiás, 2013-03-26) Wisintainer, Carolina; Seleguini, Alexsander; Seleguini, Alexsander; Collier, Leonardo Santos; Brasil, Eliana Paula Fernandes; Benett, Cleiton Gredson Sabin
Embargado
Ação de Trichoderma spp. em colônias de saúvas Atta sp. em laboratório
(Universidade Federal de Goiás, 2025-02-28) Freire, Karoliny Zarreta Santos; Pereira, Jaqueline Magalhães; Pereira, Jaqueline Magalhães; Fernandes, Paulo Marçal; Fujihara, Ricardo Toshio
Embargado.
Rizobactérias benéficas na promoção de crescimento em arroz de terras altas (Oryza sp.)
(Universidade Federal de Goiás, 2025-02-27) Duarte, Gabriella Alves; Nascente, Adriano Stephan; http://lattes.cnpq.br/3194091518396388; Nascente, Adriano Stephan; Reis, Karina Freire d'Eça Nogueira Santos dos; Filippi, Marta Cristina Corsi de
Embargado.
Novos padrões físico-químicos de bebidas a base de fermentados de jabuticaba
(Universidade Federal de Goiás, 2025-02-26) Ribeiro, Juliana Rosa; Ferreira, Tania Aparecida Pinto de Castro; http://lattes.cnpq.br/0312123979235562; Souza, Eli Regina Barboza de; http://lattes.cnpq.br/7641431808466123; Souza, Eli Regina Barboza de; Vera, Rosângela; Leandro, Wilson Mozena
Embargada.
Folhelho de Caiapônia como suplemento de magnésio para as culturas de milho Zea mays (L.) e soja Glycine max (L.) Merrill
(Universidade Federal de Goiás, 2025-02-25) Passos, Priscyla Batista; Leandro, Wilson Mozena; http://lattes.cnpq.br/9052207260053937; Leandro, Wilson Mozena; Olivieira Junior, Juarez Patricio de; Souza, Eli Regina Barboza de
Embargado.
Intervalo hídrico ótimo e índices como indicadores da qualidade físico-hídrica do solo
(Universidade Federal de Goiás, 2015-02-27) Rodrigues, Tallyta Ramalho; Medeiros, João Carlos; Madari, Beata Emoke; Evangelista, Adão Wagner Pêgo; Evangelista, Adão Wagner Pêgo; Casaroli, Derblai; Medeiros, João Carlos; Silva, Sandra Máscimo Costa e
In recent years, integrated agricultural production systems has proven to be a viable option because of the numerous benefits they provide, such as, increasing productivity, reducing production costs and improving the physical, chemical and biological soil. In the case of systems that integrate crop and livestock (iLP) there is a great concern for problems in physical properties and water the soil resulting from cattle trampling and machinery traffic. The objective of this study was to characterize the physical and hydraulic properties of an Oxisol managed under ILP in Goias Cerrado, using for that physical indicators of soil quality (soil bulk density, porosity and penetration resistance), limiting water range (LLWR) and the index S. The study was conducted in an experimental area of Embrapa Rice and Beans in iLP. The treatments were: Forest = Cerrado; iLP = Soy, Past. 1, Past. 2 and Past. 3, pasture with 1, 2 and 3 years of implementation time, respectively. Disturbed and undisturbed samples were collected in the layers 0.0 to 0.10 and 0.20-0.30 m. In the deformed specimens was determined texture, carbon content and soil fertility. In undisturbed soil samples were determined: soil bulk density (BD), water retention curve in the soil and penetration resistance (PR), which were subsequently used to calculate the IHO and the index S. Soil management with iLP affected the soil physical properties in relation to the Mata, observed by the increase in Ds, microporosity and RP and reduced macroporosity and total porosity. The soil physical behavior described by the IHO and the S were similar. Both demonstrated a degradation of soil physical quality in iLP regarding Woods, observed by low values of IHO S and for these treatments. They point to a structural soil degradation with the implementation of agriculture and a gradual improvement of soil physical quality with the set pasture deployment time, mainly by low IHO S values and the Past. 1 and higher in soybean and Past. 3, with Past. 2 showing intermediate values. The IHO indicates a severe structural soil degradation, the two layers evaluated for the treatment Past. 1 which can be attributed to recent traffic of agricultural machinery and implements for planting and harvesting practices in the area. The S-value indicates soil physical degradation to the Past treatments. 3, the first layer, Past. 1 and Past. 2 in both layers. Thus, these two indicators efficient to describe and quantify the effects of changes in soil structure by management with iLP in the Cerrado region. The management of soil under iLP was an efficient model in improving soil structure, mainly by the resilience and the beneficial effect of root used pastures.

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