VARIÁVEIS AGRONOMICAS NO MILHO SEGUNDA SAFRA EM FUNÇÃO DE DIFERENTES DOSES DE NITROGÊNIO

Abstract

Corn (Zea mays L.) is a widely cultivated crop in various regions around the world and in Brazil. The second corn harvest, known as "safrinha," has become increasingly relevant. The objective was to evaluate the effect of different nitrogen doses on agronomic variables of second-crop corn. This study was conducted at the experimental station of the Federal University of Mato Grosso do Sul, located on the Chapadão do Sul campus, an area characterized by a humid tropical climate and soil classified as dystrophic Red Latosol. Using a randomized block design with five replications, the nitrogen doses were 0, 30, 60, and 120 kg ha-1 of N. The application of nitrogen showed positive results in plant height, stalk diameter, and productivity. The dose of 30 kg ha-1yielded the best results, while higher doses reduced productivity.