Conhecendo a variação da produção de forragem e da proteína bruta no capim Marandu em ambientes tropicais

Abstract

Recommending the use of technological alternatives, such as nitrogen fertilization, for the sustainable maintenance, development and recovery of tropical forage crops, has become increasingly complex given the countless research studies in the Brazilian academic scenario. The diversity of studies and results regarding nitrogen input in Brachiaria brizantha cv. Marandu and its potential for transformation into dry matter and the development of nutritional value become dubious when expanded to the large Brazilian territorial extension. Thus, with this study, the objective was to evaluate what has been developed in research related to the productivity of pastures of the species Brachiaria brizantha (Hochst. ex A. Rich.) Stapf. cultivar Marandu depending on nitrogen fertilization. A data survey was carried out on scientific articles between 2011 and 2022 and extracted information on the origin of the research, sources of nitrogen fertilizer, dosages and productivity, to understand what has been promoted in research in recent years. Dry matter, crude protein and nitrogen use efficiency highlighted the authors' distinct observation about the same research niche. The development of research is concentrated in a few regions of the national territory. There are a standard of researched dosages and field irrigation is still little explored. The term sustainability has been recently discussed in the literature.