Manejo da adubação nitrogenada em sorgo granífero safrinha

Abstract

The management of nitrogen fertilization in grain sorghum cultivation in the winter harvest, or off-season, is crucial to ensure maximum use of nitrogen and, consequently, optimize crop productivity. Nitrogen fertilizer practices for grain sorghum include the application of mineral fertilizers, such as urea and ammonium nitrate, and the use of organic sources, such as manure and organic compounds. The objective of this literature review research was to analyze the importance of nitrogen (N) for the cultivation of grain sorghum, addressing its functions in the growth and development of the plant, nitrogen fertilizer management practices and the environmental implications of this practice. The study revealed that nitrogen plays a fundamental role in the formation of essential biomolecules, such as proteins and chlorophyll, in addition to contributing directly to vegetative growth and the final productivity of the crop. The research also highlighted the importance of adequate management of nitrogen fertilizer, including the choice of sources and forms of application, such as split fertilization and the use of alternative sources, to optimize the use of the nutrient and reduce environmental impacts. The social contribution of this study lies in the promotion of more efficient and sustainable agricultural practices, with a focus on reducing dependence on chemical fertilizers and minimizing negative effects on the environment, benefiting both agricultural productivity and the preservation of natural resources