Qualidade e rendimento de sementes de soja produzidas sob cultivo orgânico em plantio direto e preparo reduzido do solo.

Abstract

This trial aimed on determining soybean seeds quality in an organic production under two management systems: no tillage and reduced tillage (scarification + grading) in western region of Paraná State. Six treatments were designed to control some plagues plus one check treatment) (1 Baculovirus anticarsia; 2 Baculovirus anticarsia + cinnamon extract; 3 cinnamon extract; 4 Baculovirus thurigiensis; 5 Neen oil; 6 Compost A; 7 check treatment. Parameters as water content, weight of one hundred seeds, seedling percentage, seeds vigor determined by fast aging and seeds yield were evaluated. The data were analyzed by Scott Knott test – 5 % of significance – which allowed to conclude that the high level of seeds’ deterioration, derived from the low efficiency of treatments, contributed to the decreased seed quality. However, Compost A treatment presented the best response regarding to yield.