Desempenho do milheto (Pennisetum glaucum (L.) R. Br.) em ambiente potencial na fronteira oeste do Rio Grande do Sul

Abstract

Pearl millet (Pennisetum glaucum) is a tropical forage grass, with the main advantages of adapting to water deficit environments and soils with low fertility. Thus, the objective of this work was to identify the maximum productive potential of millet under nitrogen (N) doses, drawdown heights and irrigation. The work was carried out at the experimental station of the Federal University of Pampa (UNIPAMPA) Campus Itaqui/RS. The experimental design used was in randomized blocks, arranged in a factorial experiment with subdivided plots, with treatments using irrigation or not and subplots of N dose evaluations (0, 100 and 200 kg of N ha-¹), and lowering intensities from a grazing height of 50 cm, being 25, 50 and 75%. From the results, there was interaction between N doses with or without irrigation for forage mass dry matter (DM) and interaction between doses within each drawdown. DM production is greater as the N dose is increased for an irrigated environment, obtaining a production of 4,217 kg DM ha-¹ for a dose of 200 kg ha-¹ of N.