Keywords:  soil permeability, infiltration, surface runoff, sprinkling irrigation, rain intensity, Sudan grass, sod-podzolic soils, sprinkler nozzle

Мелиорация.– 2025. – №3 (113). – P 39–44

A study of the water permeability of sod-podzolic light loamy soils and the formation of surface runoff during sprinkling in the conditions of eastern Belarus was shown that the amount of surface runoff is directly dependent on the intensity of rain, the irrigation rate, and the slope of the plot, and is inversely proportional to the development of the leaf surface of Sudan grass. A design of a finemist sprinkler nozzle with two reflective discs has been developed to optimize the size of droplets and reduce the risk of erosion. An empirical equation has been obtained for calculating the rain capture radius depending on the pressure and nozzle diameter. The results of the study allow us to recommend the use of low-intensity sprinkling systems and irrigation during the development phase of crops with sufficiently developed leaf surfaces to minimize surface runoff.