Use of pH correctors in acidic soils and their effect on performance in associated pastures in the district of Pulán - Santa Cruz

Abstract

An experiment was carried out with the objective of evaluating the effect of Calcium Oxide and Calcium Sulfate on the performance of the association of ryegrass (Lolium multiflorum L. ecotype Cajamaquino) and white clover (Trifolium repens L.) in two altitudinal levels (PA) from the province of Santa Cruz. The experiment was implemented on established pastures, selecting the area according to its homogeneity of height and botanical composition. Twenty-one plots of 20 m2 (5 m x 4 m) were randomly designated per altitudinal floor (AP), under a Randomized Complete Block Design (RBCD) distributed in three repetitions. The highest yield (p < 0.05) was obtained by PA I (2800 to 3300 masl) with 4565.5 kg MS ha-1, over PA II (3301 to 3800 masl) with 3274.7 kg MS ha-1. In PA II the best performances were obtained (p < 0.05), in favor of the use of high gypsum and low gypsum; The lowest performance corresponded to the use of low lime. It is important to mention that the information obtained has been based on evaluations of two cuts, due to the intense rains; Despite this, the positive trend that would be generatedby the use of Calcium Sulfate over Calcium Oxide, as an improver of the performance of associated pastures, should be highlighted.