Levantamento de parâmetros de solo para qualificação de lavouras de soja no município de São Francisco de Assis - RS

Abstract

The increase in the world population has been impacts the world annual demand for soybeans, due to its high levels of proteins and lipids. However, we have finite resources, and the soil use needs to be more efficient to increase productivity and profitability. Considering it, here we try to understand the main soil parameters and the types of management that may interfere with soybean productivity, thus better visualizing the factors that may be limiting. Therefore, a questionnaire was prepared a and applied, between February and August 2020, to 29 producers of São Francisco de Assis who had their soil chemically analyzed during the harvests of 2017/2018, 2018/2019 and 2019/2020. After analyzing the data, the main conclusions observed are that, regardless of the year, which had quite different rainfall levels, the highest yields are achieved by producers who have better pH, base saturation and aluminum levels. These directly impact the soil's ability to provide nutrients. In years of low rainfall, these items are even more important, especially if combined with organic matter.