Efeito do uso de bioestimulante na cultura da soja, região de Santarém - PA

Abstract

Soybean (Glycine max L.) is very important for Brazil and for the world production system. The use of biostimulants provides increments in plant development, although few studies have addressed physiological aspects of soybeans related to the application of these products. Based on the above, the present study aimed to evaluate the effect of different doses of fertilizer with a biostimulant effect on soybean yield. The experiment was conducted and developed in the Elo experimental area of the company Confiança Representações, located on the Bela Terra farm with approximate geographic coordinates of 2°42'12.5" W; 54°53' 59.4" S and average altitude of 164 m, Km 45, BR 163, Belterra – PA. The study was carried out between January and May 2021, 2020/2021 harvest. A completely randomized statistical design was used, consisting of 5 treatments and 4 replications, totaling 20 experimental plots. Each plot consisted of 7 lines with a spacing of 50 cm, 3.5 meters wide and 10 meters long, totaling an area of 35 m2. In all evaluations carried out, T5 (with applications in TS, V4, R1, R1+15) was superior in relation to the other treatments, meaning a greater increase in productivity. The use of biostimulant both in seed and foliar application provides an increase in the number and weight of grains in 10 plants, PMG (weight of one thousand grains) and grain yield, even though the data are not statistically significant, confirming the hypothesis of this study.