Rendimento do milheto sob diferentes alturas de entrada de pastejo

Abstract

Millet (Pennisetum glaucum) is one of the most used summer grasses as grazing for lactating cows, given its high productive potential and its high regrowth capacity, allowing the forage to grow rapidly, with bromatological quality indexes higher than the other species, reducing the use of concentrate in the animal diet and the cost of production. Thus, working with the ideal grazing input height can contribute significantly to the productivity of the crop, changing its morphophysiological characteristics and transforming the form of consumption of the animal. Therefore, the objective was to evaluate the yield of the cultivar ADRF 6010 Valente at different grazing heights. The heights used were 40 cm, 55 cm and 70 cm. The experimental design used was randomized blocks, with 12 replications. Four collections (cuts) were carried out from February 19th to May 26th of 2020. The variables analyzed were green mass (MV) and dry mass (MS) of plants. The results obtained were verified by analyzing variance, and Tukey's multiple comparison test (p<0.05) through SISVAR software®. It was found that the height of 70 cm was more productive when compared to the other cuts evaluated, the cut also showed higher productivity considering the sum of millet yield in all evaluations. The production cycle required 97 days, less than the normal millet cycle when equated to sowing in the spring season.