Physical and physiological quality of two soybean seeds cultivars in function of potassium and limestone rates - DOI: 10.4025/actasciagron.v27i2.1844

Abstract

The utilization of seeds of high physical, physiological and sanitary quality is one of the aims to reach high technology in agriculture. The aim of this work was to analyze the effects of potassium and limestone rates on the quality of soybean seeds (Glycine max (L.) Merrill.) of MG/BR-46 (Conquista) and BRS-133 cultivars. The experiment was developed during the 2002/2003 agricultural year on the experimental farm (Fazenda de Ensino e Pesquisa) of the Engineering College – Campus of Ilha Solteira – Unesp (State University of São Paulo). Three doses of dolomitic lime (0, 1 and 2 t ha^-1), four dosis of potassium (0, 30, 60 and 90 kg ha^-1) were analyzed. The utilized experimental design was composed of randomized blocks in four replications. Dosis of dolomitic limestone were cast on the plots 10 days before the development of the experiment; potassium doses were applied (R2 stadium) beside the sowing line in the full blooming phase. The cultivars responded to the application of lime, in which 2 t ha^-1 was the rate that provided the best benefits. Different behaviors were verified in the cultivars. Nevertheless, the doses of potassium did not affect the quality of seeds.