Changes in the yield of green mass of sudangrass depending on agrochemical parameters of sod-podzolic sandy loamy soil

Abstract

   The article presents correlations between the yield of green mass of Sudangrass harvested in the phase of the beginning of the heading and in the phase of milky-wax ripeness, on the one hand, and the main agrochemical parameters (exchangeable acidity pHKCl, humus content, K₂O, P₂O₅), on the other hand. The strength of the relationship between each of the indicators is shown. Based on the established trend lines and regression equations, the quantitative parameters of the change in the yield of green mass of Sudangrass in different phases of cutting ripeness were determined with a change in the values of influencing factors. Were calculated predicted yield of green mass and the intensity of its growth between the phases of crop development with the variability of agrochemical parameters of sod-podzolic sandy loamy soil.