Efeito do tratamento de sementes na qualidade fisiológica de sementes de soja de diferentes cultivares armazenadas em diferentes temperaturas

Abstract

The Soy is having a major influence on the world economic scenario. It is the most produced grain in the world, mainly by the USA and Brazil. Soy is the most important source of protein for many nations, from the poor to the emerging and developed. In Brazil, culture is one of the most important economic activities due to the wide variety of commercialization and applications in production processes. Post-harvesting is the bottleneck of national agriculture due to lack of follow-up and low capacity, causing quality reductions in soybeans brought from the farm because storage conditions are inefficient. Storing soybeans at lower temperatures improves quality because the temperature reduces metabolic activity and minimizes seed deterioration. Seed treatment can be used to prevent pests and diseases, seed attacks and seedlings in the soil, although the storage of treated seeds has been a subject much discussed, there are only a few conclusions. Therefore, the objective of this research is to evaluate the effect of the treatment of the soybean seeds. The seeds will be stored for 120 days, at a temperature of 15 and 25ºC, being four cultivars treated with fungicide and insecticide. Moisture, pH, germination and seed vigor parameters. The results indicated that the cultivars A and D presented the best results of germination and vigor maintaining this quality until the end of the 120 days, unlike the cultivars B and C that obtained inferior results besides the reduction of the germination and vigor over time.