ANTICIPATION OF FERTILIZATION IN WHEAT ON SOYBEAN PRODUCTIVITY: CASE STUDY IN PASSA SETE – RS

Abstract

The objective of this study was to evaluate soybean productivity under the anticipation of chemical fertilization in wheat crops. The experiment was carried out during the 2023/2024 agricultural year, in the municipality of Passa Sete - RS. The design used was completely randomized with 7 treatments in 4 replicates. The treatments used were: T1: control; T2: 100% of total wheat fertilization; T3: 100% of total soybean fertilization; T4: 25% of total wheat fertilization + 75% of total soybean fertilization; T5: 75% of total wheat fertilization + 25% of total soybean fertilization; T6: 100% of total wheat fertilization + 100% of total soybean fertilization and T7: 50% of total wheat fertilization + 50% of total soybean fertilization. The NPK formula used for fertilization was 05-20-20 in both crops. Final productivity and hectoliter weight were evaluated in the wheat crop. In the soybean crop, the variables evaluated were: degree of lodging, plant height, number of pods, number of grains per pod, number of branches, thousand-grain weight, and final productivity. With the data obtained, analysis of variance and Tukey test were performed, with a 95% significance level. The use of the total fertilizer recommendation for wheat and soybean before wheat sowing promoted a greater increase in wheat productivity and better quality in hectoliter weight for industrial marketing. The anticipation of chemical fertilization of soybeans in the wheat crop interfered positively with the number of branches, productivity, and thousand-grain weight in the soybean crop.