Uso de fertilizante foliar a base de fósforo em diferentes estádios de desenvolvimento da soja, no município de Belterra - PA

Abstract

Soy production is considered one of the most important when it comes to the economy. In the country, since its introduction, it has become an extremely important commodity, especially for the balance of trade. In terms of soybean production in the Lower Amazon region, we can highlight the municipalities of Mojuí dos Campos, Belterra and Santarém as the main ones. One of the most important ways to increase productivity is the use of foliar fertilization. The objective of this work is to evaluate and validate the effects of foliar phosphorus fertilization at different phenological stages. The experiment was conducted in the experimental area of the Elo Group - Bela Terra Farm, in the city of Belterra, Pará, Km-45, located in the region of Baixo Amazonas, situated in the geographical coordinates of 02º41'18" South latitude; 54º53'18" West longitude, in the period from January 1st to April 20th of 2021. There were 4 treatments (Control, V7, R2, and R5) with 4 repetitions, with each plot having 7 rows with 0.5-meter spacing between rows and 10-meter length. Even without significant difference, the application that had the highest average yield was T3 (R2), with a productivity of 81.5 bags.ha-1 , followed by T4 (R5) that obtained an average of 78.67 bags.ha-1 .