Productivity and agronomics characteristics of Panicum maximum and Brachiária brizanta cultured in two of soil class of Tocantins state (Oxisol and Entsoil), conditioned in different water supply.

Abstract

The objective of this study was to evaluate the productive and agronomic parameters of Panicum maximum cv. Mombaça and the Brachiária brizanta cv. Marandú grown in Oxisoil, and Entsoil under different water schemes. The experiment was conducted in a greenhouse in EMVZ - School of Veterinary Medicine and Zootecnia / Federal University of Tocantins, campus of Araguaína, TO. The completely randomized design in a factorial arrangement (2x4x2), which consisted of two forage species, four levels of water (25%, 50%, 75% and 100% of the capacity of field), two types of soils, with four repetitions, making 62 experimental units. The production of dry mass of Forage (MSF) was linear behavior increasing in line with the increase in the percentage of moisture, for the two cultivars in two production cycles, the two types of soil, being that the clay soil in both cultivars returned relative superiority in comparison with the sandy soil. The mean width of leaves are not differentiated (P>0.05) in three major schemes in two cultivars. The same is observed for size of leaves to Mombaça grass, and for the two major Marandú. There was no (P> 0.05) for comparing stem diameter of the largest schemes. In the measures of time it was observed that plants were higher humidity in two largest (P<0.05). To the greatest number of tillers were higher humidity and is differentiated (P <0.05), while the Mombaça had many in first round. The biggest tillering in both genders occurs in water schemes not stress, and positively influence the characteristics productive, as well as in agronomic stressful when compared to schemes.