INFLUENCE OF DIFFERENT METHODS OF SOIL TREATMENT AND THE NUMBER OF VEGETABLE RESIDUES ON SOIL WATER PERMEABILITY, GROWTH AND CROP DEVELOPMENT

Abstract

The study deals with the field experiment on the efficiency of soil tillage technology (conventional and alternate tillage) and the amount of crop residue retention of ozone trunks of winter wheat-mung-cotton under the conditions of typically irrigated grey-earth soil of the Tashkent region. The study results showed the compaction of 0-30 and 30-50 cm soil layers with summer green mung grown under permanent beds compared to the existing technology for soil tillage. The efficiency of minimum soil tillage for summer crops with a decreased number of tillage operations under minimum soil till resulted in earlier seeding of summer crops and improved soil water permeability compared to the traditional soil tillage. Despite the amount of crop residue retained for mulching, the grain yield of summer green gram was 1.1 to 1.2 t ha-1 under traditional tillage and 1.0 to 1.1 t ha-1 under alternate tillage. The highest seed cotton yield was reached with 100% residue retention for both conventional and alternate tillage. However, the seed cotton yield was 0.38 t ha-1 higher under traditional tillage in comparison with alternate tillage.