Influência do método de plantio e espaçamento na implantação de pasto de Cynodon com Arachis

Abstract

The objective of this study was to evaluate the establishment of mixed pastures of Cynodon nlemfuensis cv. BRS Lua with Arachis pintoi cv. Belmonte using the conventional and no-tillage method, in two spacings. The experimental design was of random blocks with four replications, in a 2x2 split plot (planting methods: conventional and no-tillage, planting distances: 50 and 100 cm). The variables analyzed were: regrowth density; soil cover; meadow height; botanical composition; dry matter production; SPAD index and the cost of establishing pasture reform. At 84 days after planting, soil cover was over 95% in all plots. The initial contribution of forage peanuts in the botanical composition was relatively small, declining by 3.8% on average at 36 days after planting to less than 1.2% at 84 days. In the no-tillage (NT) method, grass height was higher compared to the conventional planting method. It was verified that the NT and the greater spacing between planting grooves, both contributed to the greater participation of undesirable plants in the botanical composition of the pasture. Although the planting methods did not present statistical differences regarding the rate of accumulation of dry mass and total dry mass, the NT represented a lower cost for grass formation. The no-tillage method was as efficient for the establishment of the stargrass grass mixed with forage peanut as the conventional method of planting.