Sistemas de cultivo e tempos de armazenamento na qualidade de sementes de feijão

Abstract

Seed quality can be affected by many factors, including those related to own plant genetic, physical, physiological and sanitary. Thus, appropriate managements in the field and in the storage period are critical in the production of seeds and / or grains. This study aimed to evaluate physical, physiological and sanitary bean seeds produced in different cropping systems (Conventional Tillage- CT, No-till- NT with radish cover and No-till with oats + radish cover) and subsequently stored for 150 days at low temperature (10ºC). Seed quality was evaluated every 50 days, being realized the following tests: density, electrical conductivity, germination and sanity. It was observed influence of farming systems and storage time on the physical, physiological and sanitary quality of bean seeds, except for the electrical conductivity parameter. The seeds from the NT with radish cover showed greater reduction in density associated with high incidence of the fungus Penicillium spp. The presence of Aspergillus spp., Penicillium spp. and other fungus, as well as climatic conditions affected physical maturation and physiological quality of bean seeds, resulting in loss of density, vigor and decrease in germination during storage.