Soil fertility can be maintained with balanced use of sulfur in winter crops

Calcium sulfate is one of the main compositions to balance the soil, providing calcium and sulfur from the roots to the aerial part of the plant.

04.06.2018 | 20:59 (UTC -3)
Emerson Alves

Production only happens with good nutrition. The nutrients available in the soil are essential for any crop, whether winter or summer, with good productivity and quality. Some research indicates that most soils in Brazil, especially in the south, have nutrient deficiencies or imbalances, which harms crops such as wheat, corn and soybeans, causing them to yield below their productive potential.

Studies indicate that there is a significant lack of calcium and sulfur in Rio Grande do Sul's soils, and these nutrients are essential to balance the soil. Agronomist and soil specialist, Eduardo Silva e Silva, highlights that it is important for producers to carry out a soil analysis before applying inputs such as sulfur. “Applying it in the wrong dose may not give any results or may result in an imbalance and, if it is applied in the correct dosage, based on land diagnosis, the results, especially regarding productivity parameters, are quite evident. It is common for the producer to visualize the benefits of this nutrient in the plant at the moment of starting, due to the vigor, the color, the larger size of the plant, compared to others”, explains the engineer.

Some experiments have proven the effectiveness of using calcium and sulfur in the soil, especially in granular form. In Cruz Alta/RS, in a trial carried out on soybeans, harvest 2017, by the Cooperativa Central Gaúcha (CCGL), it was demonstrated that granulated calcium sulfate (400 kg/ha) applied by broadcast + acidity corrector at a dose of 3.000 kg/ha ha at broadcast, showed a productivity of 3.348 kg/ha, while in the control the productivity was 3.020 kg/ha, therefore, 328 kg/ha more, or 5,47 sc of soybeans/ha more.

Eduardo also explains that granulated calcium sulfate, especially where there is direct planting, plays a key role in system fertilization, with part of it being applied in winter and the rest in summer. “All decision-making must be based on planning; This applies to the mechanization of soil preparation, sowing, spraying and fertilization. With regard to building soil fertility, the need to look at the soil as a system and, therefore, condition it in winter, raising calcium and sulfur levels and neutralizing toxic aluminum, becomes evident. which will provide the subsequent (summer) crop with a more favorable environment for the manifestation of the productive potential of the genetic material. And, without a doubt, calcium sulfate is a quick, cheap and intelligent source, especially if it is in granulated form", highlights the agronomist, who is also technical director of SulGesso, a Santa Catarina company that is a reference in mineral fertilizers based on calcium and sulfur.

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