https://repositorio.ifgoiano.edu.br/handle/prefix/227 Tue, 23 Jun 2026 07:58:43 GMT 2026-06-23T07:58:43Z https://repositorio.ifgoiano.edu.br/handle/prefix/6650 Título: PARÂMETROS NUTRICIONAIS DA CANA-DE-AÇÚCAR CULTIVADA COM CARBONATITO FOSFÁTICO E MICRORGANISMOS BIOSSOLUBILIZADORES DE FÓSFORO Autor(es): Lemes, Breno Caires Candido Pereira Primeiro Orientador: Valicheski, Romano Roberto Abstract: Brazil's dependence on imported fertilizers and the low availability of phosphorus in tropi-cal soils intensify the search for sustainable alternatives for crop nutrition. The objective was to evaluate the nutritional status of sugarcane subjected to different phosphorus sources associated with biosolubilizing microorganisms. The experiment was carried out in a green-house, in a randomized block design with four replications. Three phosphorus sources were evaluated (phosphate carbonatite rock powder, single superphosphate, and a combination of both) associated with inoculation/co-inoculation of Bacillus spp., Cladosporium cladospori-oides, and Trichoderma harzianum. Ninety-five days after planting, foliar macro- and mi-cronutrient levels were determined. The results showed that the use of the remineralizer provided phosphorus levels like soluble fertilizer, in addition to contributing to potassium supply. The combination of sources favored an increase in zinc. Regarding microorganisms, Trichoderma harzianum stood out by promoting increases in phosphorus, sulfur, and micro-nutrients, regardless of the source used, while Bacillus spp. and Cladosporium cladospori-oides showed greater efficiency when associated with poorly soluble sources. It is concluded that the use of remineralizers associated with biosolubilizing microorganisms constitutes a promising strategy to increase the nutritional efficiency of sugarcane, reduce dependence on imported fertilizers, and promote sustainable production systems. Editor: Instituto Federal Goiano Tipo: Dissertação Wed, 15 Apr 2026 00:00:00 GMT https://repositorio.ifgoiano.edu.br/handle/prefix/6650 2026-04-15T00:00:00Z https://repositorio.ifgoiano.edu.br/handle/prefix/6628 Título: SUPLEMENTAÇÃO FOLIAR COM AMINOÁCIDOS: IMPACTOS NO METABOLISMO DA CLOROFILA E NA PRODUTIVIDADE DO ALGODÃO HERBÁCEO Autor(es): Santos, Indiane Mirelle Ferreira Abstract: Herbaceous cotton is a crop of considerable economic and historical importance, widely cultivated in over 70 countries and responsible for generating billions of dollars in international trade. In Brazil, cotton productivity has increased due to the adoption of more efficient cultivars and improved management practices; however, low-fertility soils, such as those prevalent in the Cerrado region, remain a significant constraint. In this context, foliar fertilization, particularly when associated with amino acids, has emerged as a promising strategy, as it enhances nutrient uptake, improves stress tolerance, and promotes plant productivity. Therefore, this study aimed to evaluate the effects of foliar application of an amino acid-based biostimulant on the physiological and yield-related characteristics of cotton plants. The experiment was conducted using a randomized complete block design, with six treatments and four replications. Treatments consisted of six doses of an amino acid-based biostimulant (0, 200, 400, 600, 800, and 1000 mL ha⁻¹), applied via foliar spraying at the flowering phenological stage (R1). The cotton cultivar used was FM 975 WS. The evaluated variables included SPAD index, dry matter accumulation, number of bolls per plant, and yield. Overall, the application of biostimulants showed potential to enhance both physiological performance and yield of cotton plants when applied at appropriate rates. It can be concluded that foliar application of the biostimulant improves cotton performance, with recommended application rates ranging from 600 to 800 mL ha⁻¹. Editor: Instituto Federal Goiano Tipo: Artigo de Periódico Wed, 01 Apr 2026 00:00:00 GMT https://repositorio.ifgoiano.edu.br/handle/prefix/6628 2026-04-01T00:00:00Z https://repositorio.ifgoiano.edu.br/handle/prefix/6613 Título: AJUSTES METODOLÓGICOS DO TESTE DE HIPOCLORITO DE SÓDIO EM SEMENTES DE SOJ Autor(es): Cruz, Railane Silva da Primeiro Orientador: Oliveira, Silvia Sanielle Costa de Abstract: Mechanical damage is a major obstacle to the production of high-quality soybean seeds. The most critical stage in the entire production process is harvesting and processing, where there is the greatest risk of such damage occurring. The objective of this work was to develop a quick and practical methodology for evaluating mechanical damage in soybean seeds. The work was carried out in a factorial design with two 5x6 factors using different concentrations of sodium hypochlorite (4.75, 5.0, 5.25, 5.50 and 5.75%) and soaking times (3, 4, 5, 6, 7 and 10 min). The solutions were prepared from commercial 9% sodium hypochlorite, performing the necessary dilutions using the dilution equation C1V1 = C2V2. This treatment was applied to three soybean cultivars: Olimpo 80I82RSF IPRO, M7601 I2X, and Bônus 8579RSF IPRO, one batch of each, from 2023/2024 growing season, with four replicates of 100 seeds per treatment. For mechanical damage tests, a seed counter and the necessary sodium hypochlorite were used to prepare 1.0 liters of stock solution. The results indicated that, for soybean cultivars Bônus 8579 RSF IPRO and M7601 I2X, among the concentrations evaluated in this study, the 5.75% sodium hypochlorite solution associated with a treatment time of 3 minutes presented the lowest values of mechanical damage. For Olimpo 80I82 RSF IPRO cultivar, it was observed that a 5.75% sodium hypochlorite concentration combined with a 10-minute exposure time resulted in a lower rate of mechanical damage. However, the literature and technical recommendations from Embrapa indicate the use of a 5.25% solution, emphasizing that further research comparing different concentrations in different batches is necessary to validate possible methodological adjustments, since these conditions do not compromise the reliability of the results and allow for greater speed in the evaluation process. KEYWORDS: Stamina test; Soaking; Mechanical damage; Glycine max. (L) Editor: Instituto Federal Goiano Tipo: Dissertação Mon, 30 Mar 2026 00:00:00 GMT https://repositorio.ifgoiano.edu.br/handle/prefix/6613 2026-03-30T00:00:00Z 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