NUTRIENT CONTENT AND THEIR BALANCE IN IRRIGATED SOILS WITH DIFFERENT LEVELS OF FERTILITY

KUZIEV J.M.

Authors

KUZIEV J.M. Institute of Soil Science and Agrochemical Research, Tashkent, Uzbekistan

Keywords:

irrigated typical sierozems, fertility, nutrients, cotton, removal, balance.

Abstract

The article discusses the reasons for changes in the agrochemical properties of irrigated typical sierozems in pilot plots with low, medium and high fertility, and also provides a comparative description of the content of the main nutritional elements - nitrogen, phosphorus and potassium in the organs of cultivated cotton, their removal during the growing season and a balance.

It has been established that when cultivating cotton on the studied soils, a positive nitrogen balance is created. High removal of phosphorus and potassium from the soil by plants contributes to the transition of the studied soils from the group of low-provided to the group of very low-provided with phosphorus and potassium, which leads to a violation of the ratio between the nutritional elements and a change in the properties and characteristics of these soils.

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