Produção e posterior semeadura de sementes de soja enriquecida com molibdênio: qualidade fisiológica, alterações químicas e nutricionais, métodos e épocas de aplicação

• Autor(a) principal: Oliveira, Carina Oliveira e [UNESP]
• Data de Publicação: 2015
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://hdl.handle.net/11449/124452; http://www.athena.biblioteca.unesp.br/exlibris/bd/cathedra/18-06-2015/000835450.pdf
• topic: Plantas - Efeito do molibdênio; Soja; Elementos traços na nutrição; Proteínas; Plants, Effect of molybdenum

Studies have shown the importance of using molybdenum (Mo) in soybean worships taking this micronutrient great importance in the nitrogen fixation process, especially for being part of the nitrogenase enzyme, which is responsible for supplying nitrogen to the soybean plants. The objective of this study was to produce soybean seeds enriched with different doses of Mo and verify the behavior of these seeds by physiological and nutritional quality, and using these soybeans enriched with molybdenum for sowing next season, and analyze their behavior for the presence or absence of molybdenum at the beginning of the crop. The experiment was conducted at Experimental Station belongs to UNESP - Ilha Solteira, located in Selvíria - MS, in a clayey Oxisol. The experiment was conducted in two years using BRS Valiosa RR cultivar. The first year was used three molybdenum doses (0, 400 and 800 g ha -1 ), with four replicates, applied to the leaves, half the dose in stages R3 and the other half in R6 stage. In the second year the seeds obtained in the first year were sown for the formation of two experiments conducted in parallel. The first experiment was conducted in a randomized block design in a x3 factorial scheme: three application methods (without application of molybdenum, molybdenum application at the time of seeding in a dose of 25 g ha -1 Mo, and foliar application at V4 stage in a dose of 25 g ha -1 Mo) and seeds with three Mo contents obtained in the previous year. To second experiment was used a randomized block design in a factorial scheme 4 x 4 x 3: 4 application times x 4 doses of Mo x seeds with 3 different Mo content, with four replications. The application times were: V4 stage, pre flowering, R3 and R5 stage, and the doses: 0, 25, 50 and 100 g ha -1 Mo, and seeds with three levels of Mo obtained in the previous year. There enrichment of seeds already in the first year at a dose of 400 g ha -1 ...