Agro-ecological basis of yield formation of clover under irrigation in Kazakhstan’s Aral Sea

In terms of irrigated agriculture of Kazakhstan Aral high-yielding crop of clover yellow is formed at an early sowing and application of phosphorous fertilizer in the bad years in a dose of 60 kg/ha and in good years - P90 kg/ha ai. Application of nitrogen fertilizers (N30 kg/ha) and manure (20 tonnes/ha) contributes to a better preservation and growth of weeds, so do not make them for sowing clover. On crops of clover, which formed after the first mowing, and the second year of life completely destroyed malignant weeds of irrigated agriculture - prosyanki and klubnekamysh. Therefore, sowing clover should be placed on the checks and fields heavily obstructed by these weeds.