Application of different dos es of molybdenum on soybean production (Glycine max L.)

Abstract

Soybean cultivation, along with corn and wheat, is one of the most important crops in Paraguayan agriculture. It is the country's main source of foreign currency and a key contributor to the national economy. In recent years, foliar fertilization has become a widely used technique due to its effectiveness and efficiency in meeting micronutrient needs. This research was carried out with the objective of analyzing the effects of different doses of Molybdenum and its relationship on the growth and yield parameters of the soybean crop (Glycine max L.), being conducted in the district of Santa Fe del Paraná, Alto Paraná, in a private property, in which the experimental design of completely randomized blocks was used with 5 doses of molybdenum and 4 repetitions, totaling 20 experimental units. The treatments were: T1 control, T2 0.150 l ha-1, T3 0.250 l ha-1, T4 0.350 l ha-1, T5 0.450 l ha-1 of Molybdenum applied at the V4 phenological stage. The variables evaluated were plant height, number of pods per plant, thousand-grain weight and grain yield. The data were subjected to analysis of variance (ANOVA), through which it was found that none of the four variables presented statistically significant results. Plant height ranged from 1.07 to 1.13 m; pods per plant, 82.43 to 88.00 pods; thousand-kernel weight, 137 to 144 g; and yield per hectare, 2662.5 to 2789.6 kg. Plant height, number of pods per plant, thousand-grain weight and yield were not affected by the use of foliar molybdenum applied at the V4 stage.