USO DE SILICIO COMO INDUTOR DE RESISTENCIA NA CULTURA DA SOJA ASSOCIADO COM FUNGICIDAS

Abstract

This study aimed to evaluate the effect of foliar silicon application, combined with fungicides, on agronomic traits and soybean yield. The experiment was conducted on a rural property in the municipality of Nova Glória, Goiás, during the 2024/2025 growing season, using a randomized block design with nine treatments and four replications. The plots consisted of four five-meter rows, with the two central rows considered as the useful area, excluding 0.50 m at each end. Plant height (PH), first pod height (FPH), number of pods per plant (NPP), number of grains per pod (NGP), thousand-grain weight (TGW), and yield (kg ha⁻¹) were evaluated. No statistically significant differences were observed among the treatments. TGW ranged from 161.97 to 207.50 g, with the highest mean recorded in the control treatment (T1). Yield ranged from 3,784.40 to 4,454.91 kg ha⁻¹, with the highest mean observed in T6 (4,454.91 kg ha⁻¹), representing a numerical increase of 9.4% compared with the control. It is concluded that, under the evaluated conditions, foliar silicon application did not promote a statistically significant increase in soybean yield.