PAULINO TAVEIRA DE SOUZA
Abstract:
Grazing livestock activity remains the most used, viable and inexpensive technique in Brazil. However, it is necessary to use technologies to reduce pasture degradation, seasonality in forage production and, especially, the loss of nutritional value, particularly as a consequence of nitrogen (N) deficiency in Brazilian soils. In addition to composing amino acids and proteins, nitrogen is part of numerous fundamental molecules to plant life, being one of the main responsible for the increased flow of tissues and thus can provide higher leaf area index and forage production. In this context, Biological nitrogen fixation, can be used as an alternative to increase forage productivity by reducing nitrogen fertilizer costs and improving forage quality. Nitrogen provided by the biological fixation process is less prone to leaching and volatilization, making the biological process a clean and sustainable alternative to the supply of N in commercial agriculture. Therefore, the objective was to evaluate the physiological, morphophysiological and chemical-bromatological characteristics of Brachiaria brizantha cv. Marandu submitted to nitrogen doses and application of Azospirillum brasilense in Cerrado soil.
