Evaluation of the effect of the application of two agricultural amendments, in the maintenance of a forage mixture composed of perennial raygrass (Lolium perenne) and white clover (Trifolium repens)

Abstract

This research aimed to evaluate the application of two agricultural amendments for maintaining a forage mixture on the Esperanza property, Municipality of Cumbal, Department of Nariño-Colombia, located 3155 meters above sea level. The experimental design was completely randomized blocks (DBCA) with five treatments and three repetitions. The amendments evaluated in the experiment were: T1: control without application of amendments; T2: (33 % CaO y 15 % MgO), 1.0 t ha^-1; T3: (33 % CaO y 15 % MgO), 1.5 t ha^-1; T4: (40 % CaO + 1.5 % MgO + 9 % P205 + 6 % SiO2 y 1% Mn), 0.5 t ha^-1; T5: (40 % CaO + 1.5 % MgO + 9 % P205 + 6 % SiO2 y 1 % Mn), 1.0 t ha^-1. The variables evaluated were pH, nutrients, grass height (cm), number of leaves, and MS in kg ha-1. For statistical analysis, variance and Tukey's test were performed for comparison between means. In the study of the variables of pH, nutrients, number of leaves, and dry matter, no significant statistical differences were found. The height evaluation of the forage mixture presented significant statistical differences, where T5 was the best.