Research evaluates impacts of liming and gypsum on soil fertility

To evaluate the effects of applying limestone and gypsum on soil fertility and soybean production in areas recently converted to agricultural use, researchers from the Doctorate in Agricultural Sciences course at the Federal University of Piauí (UFPI) conducted a study in the municipality of Currais (PI), in the Cerrado do Matopiba region, which analyzed different doses of limestone and gypsum applied in experimental plots. Changes in soil chemical attributes, plant nutrition and soybean grain productivity were monitored for two years. The thesis was supervised by professor Julian Junio ​​de Jesus Lacerda.

The results of research by Professor Doze Batista, assigned to the Agricultural Engineering course at the Professora Cinobelina Elvas campus, in Bom Jesus, showed that the application of limestone and gypsum significantly improved soil conditions, reducing acidity and increasing the availability of nutrients such as calcium, magnesium, phosphorus and sulfur. The application of gypsum positively influenced the concentrations of calcium and magnesium in the soil, although it did not show a clear effect on soybean productivity.

Doze Batista explains that, by understanding how different lime and gypsum rates affect soybean growth, the study can help farmers optimize their cultivation practices, resulting in higher yields and, consequently, better food security. “The results of the study can inform public policies and rural development strategies, promoting agricultural practices that benefit both farmers and the environment”, he informs.

The professor also states that the research provides data and insights into the interaction between limestone, gypsum and soybean productivity, contributing to the existing body of knowledge on soil management and fertilization. This can open new lines of investigation and deepen understanding of sustainable agricultural practices. “Research can serve as a learning field for students and professionals in the field, promoting the training of new researchers and specialists in Agronomy and Soil Sciences”, he highlights.

In practical terms, he also highlights that the study can be applied to university extension programs. “The study can help farmers better understand how to adapt their practices to the specific conditions of the Cerrado do Matopiba, promoting more resilient agriculture adapted to the local climate, in addition to being able to be used in rural extension and training programs, helping farmers to understand the importance of adequate soil management and the application of inputs”, he emphasizes.

Finally, the study concluded that liming and gypsum are essential practices for managing soil fertility and for soybean production in acidic soils in the Cerrado, highlighting the importance of adjusting application doses, in addition to standard recommendations, to maximize crop yield. The research provides valuable findings on the interaction between soil amendments, fertility and agricultural productivity, emphasizing the need for balanced nutrient management practices to promote agricultural sustainability in the region.