Correlations of agronomic characteristics of soybean cultivated with the use of organomineral fertilizers

Abstract

The use of correlations can identify the traits correlated with soybean grain yield. Therefore, the objective of this study is to use path analysis to examine how agronomic traits influence grain yield in soybeans, taking into account different doses and sources of organominerals used in cultivation. The experimental design used was randomized blocks arranged in a sub-subdivided plot with three replications. In the plots, the treatments consisted of two soybean cultivars (BMX Bônus IPRO and BMX Olimpo IPRO), and in the subplot, the treatments consisted of three phosphate fertilizers [two organomineral fertilizers manufactured and a phosphate fertilizer (simple superphosphate)]. The subplot used doses of 0 (control), 50, and 100 kg ha-1 of P2O5. At full flowering, the relative chlorophyll index was evaluated. At physiological maturity, plant height, first pod insertion height, number of stems, pod number, number of grains per pod, thousand-grain mass, and grain yield were evaluated. The plant height variable presented the greatest positive direct effect on the soybean yield cultivated using organomineral fertilizers.