Produtividade e qualidade bromatológica das pastagens de Centeio Temprano e Trigo Lenox na Região de Fagundes Varela/RS

Abstract

In Rio Grande do Sul, we can consider rye and wheat as alternative species for grazing dairy cattle during the winter, which requires further studies on the two cultures, in the situation of the region of Fagundes Varela. The objective of this work was to evaluate the productivity and chemical quality of Rye pastures, cultivar Temprano® and Trigo, cultivar Lenox® in the region of Fagundes Varela/RS. The sowing of pastures was carried out in a bed with 20 plots of 4m² each and borders of 0.5m between plots, totaling an area of 136.5m². The experimental period took place between May and November, 2022, until the final laboratory evaluations. The evaluated variables were average productivity in kg of dry matter per hectare, regrowth potential, average percentage of crude protein and neutral detergent fiber. The experimental design was in randomized blocks, with ten replications of each treatment, in a 2x6 factorial scheme (treatment: cut). Data were submitted to analysis of variance (ANOVA) and means compared by Tukey's test (p≤0.05), using the Agroestat® program. Dry matter production per hectare and regrowth potential were not significantly influenced (p>0.05) by treatment. The percentage levels of NDF and CP of the pastures were not significantly influenced (p>0.05) by the treatment, however, they were significantly influenced (p<0.05) by the collection period. The two pastures showed good dry matter yield potential, however with low protein levels. This suggests the demand for more work focused on bromatologica quality. [resumo fornecido pelo autor]