Recobrimento de sementes de soja com fontes e doses de potássio e produtos protetores / Soybean seed coating with sources and doses of potassium and protecting products

AUTOR(ES)
DATA DE PUBLICAÇÃO

2009

RESUMO

This research had the objective to evaluate soybean seed coating over with potassium source and doses and chemical protectants. Performance and quality evaluations were done in a greenhouse: 15-day emergence value, emergence speed index, number of pods, number and weight of seeds, foliar area and dry weight. Laboratory determinations included: germination, accelerated ageing, cold test, total seedling length and length aerial mass and radicle (two periods, i.e. after harvesting and after one year storage); and the Blotter Test for fungus. The experimental design used for the greenhouse experiment was completely randomized blocks, while for the laboratory a completely randomized design was employed. Comparisons of means between treatments were tested through the Duncan test at a 5% probability value. Results allow the following conclusions: soybean seed coating with fungicide, insecticide, micronutrients and polymer can increase soybean seed yields in even 20%; soybean seed coating with fungicide, insecticide and micronutrients did not affect seed vigor; seed treating and coating with polymer was efficient in reducing fungus incidence; seed coating with Potassium Chlorate can increase soybean seed yield in even 20%; soybean seed coating with potassium solution + polymer increased its performance; the positive effect seed coating with potassium is a function of the level of soil fertility and potassium dosage and source.

ASSUNTO(S)

glycine max l. produção glycine max l. yield vigor producao e beneficiamento de sementes vigor tratamento de sementes fungos seed treatment fungus

ACESSO AO ARTIGO

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