https://repositorio.ifgoiano.edu.br/handle/prefix/221 Mon, 11 May 2026 12:53:02 GMT 2026-05-11T12:53:02Z https://repositorio.ifgoiano.edu.br/handle/prefix/6536 Título: RUPTURA FISIOLÓGICA NO TEGUMENTO E TRATAMENTO DE SEMENTES DE SOJA: INFLUÊNCIA NA QUALIDADE FISIOLÓGICA Autor(es): Santana, Raíner Késley Maciel Primeiro Orientador: Oliveira, Silvia Sanielle Costa de Primeiro Membro da Banca: Oliveira, Silvia Sanielle Costa de Segundo Membro da Banca: Chaibub, Amanda Abdallah Terceiro Membro da Banca: Bottega, Daline Benites Abstract: Soybean is one of the main crops responsible for the increase in cultivated area and grain production in Brazil. Given this magnitude, the use of superior quality seeds becomes paramount. Physiological rupture in the seed coat, characterized by fissures, has generated concerns regarding its impact on the physiological quality of soybean seeds. This study aimed to evaluate seeds with physiological rupture (PR) and no physiological rupture (NPR) in the seed coat, as well as their interaction with chemical and biological treatments, and their influence on physiological quality. The analyses were carried out in a laboratory accredited by MAPA in the municipality of Rondonópolis - MT, using the cultivar 80I82RSF IPRO (Olimpo), in a 3×3 two-factor scheme, corresponding to PR seeds, NPR seeds, and the original batch (OB), combined with three treatments (no treatment, Fortenza® Elite, and Standak Top® + Votivo). The seeds were visually separated according to seed coat integrity, treated with the chemical products, and subjected to germination, accelerated aging, seedbed emergence, and imbibition curve tests. PR seeds showed lower germination (75%) compared to NPR seeds (86%) and the OB (81%). Fortenza® Elite reduced vigor in NPR seeds but demonstrated a protective effect on PR seeds under accelerated aging. Standak Top® + Votivo provided greater seedling emergence in the seedbed (93%), regardless of the seed coat condition. It is concluded that seed coat integrity determines the physiological quality of soybean seeds, and the treatment with Standak Top® + Votivo represents the most effective strategy to ensure crop establishment, even in seed batches with physiological rupture in the seed coat. Editor: Instituto Federal Goiano Tipo: Dissertação Fri, 27 Feb 2026 00:00:00 GMT https://repositorio.ifgoiano.edu.br/handle/prefix/6536 2026-02-27T00:00:00Z https://repositorio.ifgoiano.edu.br/handle/prefix/6266 Título: POTENCIAL DE DIFERENTES ISOLADOS DE Trichoderma SPP. NO CONTROLE DE FITOPATÓGENOS E PROMOÇÃO DE CRESCIMENTO EM PLANTAS Autor(es): Valente, Jéssica Barros Cabral Primeiro Orientador: Geraldine, Alaerson Maia Primeiro Membro da Banca: Alves, José Milton Segundo Membro da Banca: Rocha, Geisiane Alves Abstract: This study evaluated the potential of native Trichoderma spp. isolates for the biological control of phytopathogens and promotion of growth in soybean and maize. Thirteen isolates obtained from soils in Goiás state were tested against Macrophomina phaseolina, Macrophomina sp., Fusarium sp., and Rhizoctonia solani. Laboratory assays included dual culture tests, antagonism scales, sporulation capacity, mycelial growth, and parasitism. Inoculum was produced by solid-state fermentation on parboiled rice and converted into conidial suspensions. Spore viability was monitored for up to 35 days under refrigerated (4°C) and frozen (−80°C) storage. Field experiments in randomized blocks were carried out during the 2023/24 season, with individual and combined isolate treatments compared with a commercial product and a control. Plant height, root and shoot dry mass, thousand-seed weight, and productivity were evaluated. Isolates P3, P6, and P10 showed vigorous growth, high sporulation, and parasitism against multiple pathogens. Spore viability remained above 70% under refrigeration for up to 21 days, while freezing drastically reduced survival after 14 days. In the field trial P3 and P6 application, alone or in combination, significantly increased plant height, dry biomass, and yield in soybean and maize, outperforming the control and performing similarly or better than the commercial product. These results indicate that native isolates of Trichoderma spp., particularly P3, P6, and P10, have high potential as biocontrol agents and bio-stimulants. They represent promising candidates for the development of biological formulations aimed at integrated disease management and sustainable agricultural systems in the Cerrado. Keywords: Trichoderma spp., bioprospecting, antagonism, bioinputs, biological control. Editor: Instituto Federal Goiano Tipo: Dissertação Tue, 12 Aug 2025 00:00:00 GMT https://repositorio.ifgoiano.edu.br/handle/prefix/6266 2025-08-12T00:00:00Z https://repositorio.ifgoiano.edu.br/handle/prefix/6165 Título: COINOCULAÇÃO DE BACTÉRIAS FIXADORAS DE NITROGÊNIO COM A APLICAÇÃO DE COBALTO E MOLIBDÊNIO NA CULTURA DO AMENDOIM Autor(es): Amorim, Anna Paulla Gonçalves de Primeiro Orientador: Cruz, Sihélio Júlio Silva Abstract: Peanut (Arachis hypogaea L.) is an oilseed crop of great food and socioeconomic relevance in Brazil and the world. Being the second most cultivated oilseed in Brazil. The experiment was conducted in a greenhouse at the Fazenda Escola do IF Goiano, in order to evaluate the effects of coinoculating seeds with Bradyrhizobium japonicum and Azospirillum brasilense and the application of cobalt and molybdenum on nodulation in peanut crops. The design used is a randomized block, with four replications, and a factorial combination (2 × 4) with the application or not of mo and co associated with four inoculation treatments. With the objective of evaluating the effects of seed coinoculation and the application of Co and Mo on nodulation, growth and dry matter partitioning of peanut plants. The data obtained were subjected to analysis of variance and compared using the Tukey test, at 5% probability. The application of inoculants and micronutrients, molybdenum and cobalt, proved to be a good strategy to improve cultivar development. Editor: Instituto Federal Goiano Tipo: Dissertação Tue, 20 Aug 2024 00:00:00 GMT https://repositorio.ifgoiano.edu.br/handle/prefix/6165 2024-08-20T00:00:00Z https://repositorio.ifgoiano.edu.br/handle/prefix/5863 Título: COINOCULAÇÃO COM BACTÉRIAS FIXADORAS DE NITROGÊNIO JUNTAMENTE COM ADUBAÇÃO NITROGENADO VIA FOLIAR NO CULTIVO DE SOJA Autor(es): Silva, Wmarley Goulart Primeiro Orientador: Cruz, Sihélio Júlio Silva Primeiro Membro da Banca: Cruz, Sihélio Júlio Silva Segundo Membro da Banca: Bottega, Daline Benites Abstract: The experiment was conducted in a commercial production area in the municipality of Diorama, GO. The experimental design used was a factorial scheme (4 x 2) with a randomized block design, with 4 repetitions for each treatment. Factor A consisted of soybean seed inoculation with (i) Bradyrhizobium japonicum, (ii) Azospirillum brasilense, (iii) co-inoculation with B. japonicum and A. brasilense, and without inoculation (control). The second factor was the application or not of nitrogen (N) via foliar spray at the V4 phenological stage (four trifoliate leaves). The experimental plot consisted of 5 rows of 5.0 m each, spaced 0.45 m apart, totaling 11.25 m². The soybean cultivar used in the experiment was Brasmax BÔNUS IPRO 8579 RSF. The parameters evaluated included the number of nodules per plant, dry mass of nodules, dry mass per nodule, plant height, leaf area index, SPAD chlorophyll index, shoot dry mass, root dry mass, total dry mass, thousand-grain weight, and grain yield at 13% moisture. At the end, the data obtained were subjected to analysis of variance, and if significant, the effects were compared by Tukey's test at a 5% probability. The technique of inoculation and/or co-inoculation of soybean seeds with Bradyrhizobium japonicum and/or Azospirillum brasilense, along with the application of nitrogen via foliar spray, increases the mass and number of nodules on the roots of soybean plants. The processes of inoculation and/or co-inoculation of seeds with Bradyrhizobium japonicum and/or Azospirillum brasilense enhance the growth of the shoot and roots of soybean plants, with positive effects on grain yield. Editor: Instituto Federal Goiano Tipo: Dissertação Fri, 21 Mar 2025 00:00:00 GMT https://repositorio.ifgoiano.edu.br/handle/prefix/5863 2025-03-21T00:00:00Z