Leaf nitrogen fertilization in height and green mass of Brachiaria brizantha cv. Marandu

Abstract

The reconstitution of soil fertility becomes one of the ways used to recover the productive capacity of pasture in degradation. Nitrogen fertilization has been essential for increasing forage production, especially when it comes to pasture recovery. The objective of this study was to evaluate the height and productive capacity of green mass of Brachiaria brizantha cv. Marandu, submitted to different sources of nitrogen. For that, tests were carried out under field conditions in the municipality of Turvânia, Goiás. The experimental design was in randomized blocks, with five treatments and a control, with 5 blocks. The analyzed variables were green biomass and height, in a cut with an interval of 33 days. For the variable plant height The effect of treatments showed a significant result at the 1% probability level (P < 0.01), as Fcal > Ftab we rejected H0 and concluded that there is a significant difference between the means of treatments, the effect of rows also showed a significant result at the same level (P < 0.05), the column effect was not significant at 5% probability (P > 0.05) and as Fcal < Ftab we accept H0 and conclude that there is no significant difference between the effect of the columns. For the green mass variable, the effect of treatments showed a significant result at the 1% probability level (P < 0.01) and, as Fcal > Ftab, we rejected H0 and concluded that there is a significant difference between the means of treatments, the effect of lines of rows and columns also showed a significant result at the 5% and 1% probability levels, respectively