Abstract
In the Republic of Uzbekistan widespread agrotechnical and melioration measures are carried out, aimed to melt the population demands on the ecologically clean agricultural products. The output quality can be improved through quantity reduction of residue toxic pesticides accumulating in soil. Study of soil quality, development of agro-engineering measures on pollution decrease are an important problem today. The research was conducted in the fields of meadow sierozem soil with a total area of 5 hectare of selected agricultural holding. In 5 key fields soil samples were taken for chemical analysis. As an experimental zone the 1st cut was chosen, placed with a height of 420 meters above sea-level. In the first ten days of April 26 soil samples were selected from soils 0-30, 30-50, 50-80, 80-100, 120-150 centimeters with 3 cuts and 2 borer points (hand drill). The research was conducted in field and laboratory conditions. Solution of obtained soil samples was tested on Mass- chromatograph machine. In determining of initial ecological state of soil, the main focus was given to organochlorine pesticides with toxic effect. Admissible quantity (MAC) in soil for pesticides HCCH and its metabolites is 0,1 mg / kg. Laboratory research showed that in analytics in all cuts the number of pesticides is high, that is 1-35, 3 times higher than MAC, determined for soil.
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