Teor de proteína e de óleo nos grãos de soja em função do tratamento de sementes e aplicação de micronutrientes

Abstract

RESUMOConduziu-se este trabalho, com o objetivo de verificar o efeito do uso de inoculante, fungicida, e micronutrientes na produtividade e na composição química dos grãos de soja. Na safra de 2005/2006, foi realizado um estudo com diferentes tratamentos de sementes e aplicação foliar de micronutrientes. Avaliaram-se características agronômicas e a produtividade, assim como o teor de óleo, de proteína e de outros nutrientes das folhas e dos grãos de soja. Altura de planta foi influenciada significativamente pelos tratamentos aplicados, sendo que a menor média de altura de planta foi observada na testemunha, 89,75 cm. O diâmetro de caules, o número de vagens por planta e a massa de 100 sementes não foram influenciados pelos tratamentos. Nas condições que o experimento foi desenvolvido, em solos de boa fertilidade, os tratamentos adotados não influenciaram significativamente na produtividade e nos teores de proteína e de óleo dos grãos, assim como na composição química foliar e dos grãos de soja. Termos para indexação:Glycine max; composição das sementes; produtividade. ABSTRACTThe objective of this work was to verify the effect of the use of inoculant, fungicide, and micronutrients on yield, and on the chemical composition of soybean grains. In the 2005/2006 crop, a study with different seed treatments and leaf applications of micronutrients was done. Agronomic characteristics and yield were evaluated, as well as, oil, protein, and nutritional contents of soybean leaves and grains. Plant height was influenced significantly by the applied treatments, with the smallest average of plant height being observed in control ( 89.75 cm). Stem diameter, number of beans per plant, and bio mass of 100 seeds were not influenced by treatments. Under the conditions in which the experiments were carried out, in soil with good fertility, the adopted treatments did not significantly influence yield, nor protein and oil content of grains, nor chemical composition of soybean leaves and grains.

Crambe affected by biological and chemical seed treatments

“…This fact is related to low temperatures (frosts) that partially damaged the leaves and the crop in the flowering stage, which is the time when the crop is more sensitive. Souza et al (2009) also found no effect of seed treatments on the mass of one hundred grains of soybeans.…”

Effects of Macronutrients in the Physiological Quality of Soybean Seeds

“…Since the protein content in different soybean cultivars varies from 30 to 45%, and the nitrogen content is characterized as the base element of proteins evidences certain variation (Souza et al, 2009). …”

Adaptability and stability of soybean genotypes in off-season cultivation

“…Souza et al (2009) obtained an average of 35% protein in an assessment of the BRS 206 cultivar. Thus, the performance of the UFUS lines for this characteristic is of interest for breeding programs due to the increasing global demand for soybean meal with higher protein contents for animal feed.…”