COTTON FERTILIZER STANDARDS ON TYPICAL GRAY SOILS SUBJECTED TO IRRIGATION EROSION

Abstract

This article presents fertilization rates for cotton on typical gray soils
subject to irrigation erosion. Today, 12.3% of the cultivated land in the world consists
of irrigated land, and the main part of food products is grown on these lands.
Currently, there are 1,094 million people in the world. hectares or 56% of the area is
subject to irrigation erosion. The main part of the eroded areas corresponds to the
countries of Asia, Africa, and South America [1]. In particular, 81% in Australia, 74%
in Central America, 63% in North America, 50.6% in South America, 52.3% in
Europe, 59.0% in Asia, and 46.0% in Africa are affected. Also, due to the irrigation
erosion in the world, 75 bln. tons of topsoil is being lost [2]. The eroded land area in
our republic is 1772.3 thousand hectares or 40% of the total arable land area. In these
areas, the yield of cotton, winter wheat and other crops is 20-30% lower than in noneroded lands, and the quality of the raw materials grown is low [3].