Produtividade do milho cultivado em solo submetido a diferentes formas de aplicação de calcário e gesso

Abstract

The present work carried out in the experimental area of the Federal University of Fronteira Sul, Erechim campus, in Rio Grande do Sul, consisted of evaluating the effects of using limestone and agricultural gypsum on the production of corn, considered one of the most important grains that are cultivated and consumed around the world. Agricultural limestone and gypsum are used to correct common problems in the region's soil, such as acidity, which hinders the healthy growth of plants. The study investigated the response of corn grown in soil subjected to application of limestone and gypsum. Plots measuring 6 x 4 m, with borders of 1 m between plots and 2 m between blocks, were monitored to monitor the development of the crop, as well as the occurrence of pests and weeds. During cultivation, nitrogen fertilization was applied under cover. The harvest was carried out after monitoring plant growth from October 2023 to April 2024. The treatments tested did not result in effects on grain yield. The lack of effects on the variables analyzed may be related to the climatic conditions prevailing during the corn growing period. Although the integration of liming and plastering is essential to maximize productivity, as deep calcium is crucial for root growth and efficient absorption of water and nutrients, meteorological conditions of excessive rainfall in the initial stages, and Water deficit at the grain filling stage may have influenced the results, making it difficult to detect significant effects in the treatments.