Doses de silício na produtividade de soja [Glycine max (L.) Merrill] e suas características agronômicas

Abstract

The soybean is the main agricultural product export of Brazilian therefore it is important to conducting studies that contribute to the mitigation of the effects that might cause a decrease in income and depreciation of the quality of that oleaginous as the occurrence of pests and diseases, problems with soil fertility and climatic adversities, among others. It is known that plants differ in their ability to absorb silicon-Si and therefore are classified differently. The influence of vegetation on Si in the development of soybean plants is still little known, but few studies described in the literature. Knowing applicable, objective of this work was to evaluate the response of plants to the soybean variable dosage of silicon in the plantation, through the development characteristics of the plants in the field. The experimental design was a randomized complete blocks (CBD), with three replicates, with the treatment the following doses of silicon (0, 50, 100, 150, 200, 250, 300, 350, 400, 450 and 500 kg ha - 1) at sowing cultivar BRS MG 68 Vencedora. Doses of silicon used not provided significant increases in seed yield, weight of a thousand seeds and number of seeds per vegetable. With increased doses, there was significant increase in the number of pods per plant, plant height and insertion of the first vegetable. Moreover, with the doses applied there was no phytotoxic effects on the soybean plant.