BIODIAGNOSTICS OF ECOLOGICAL STABILITY OF AGROECOSYSTEM BASED ON BIODIVERSITY OF ORGANIC SUBSTANCE OF AGROCENOSIS

Abstract

The features of biodiagnostics of ecological stability of agroecosystem based on biological diversity of organic substance of agrocenosis are presented in the article. The content of organic matter and mobile forms of phosphorus, exchange potassium and nitrogen in the soil was directly dependent on the weight of black liquid application, straw, break crops, cultivated in pairs, fervently and cozy, both separately and together with mineral fertilizers. Mineral fertilizers, when applied to the soil together with different types of organic fertilizers and separately increased the number and weight of weeds on all versions of the studies carried out. At the same time the values of number and weight of weeds on variants with green-manured fallow and black liquid application exceeded these values in variants of occupied steam by 4.3–12.7 %. The introduction of 40 t/ha of manure instead of wheat straw of winter beet increased the number and weight of weeds in green-manured fallow agrocenosis by 13 and 17 %, respectively, while in the occupied steam versions black liquid application and straw proved to be practically equivalent to agricultural techniques. The use of break crop biomass in steam and rearing, as well as barley straw on green-manured fallow variants, resulted in 13–15 % increase in weeds numbers compared to steam-occupied crop rotation, and their masses by 15–16 % respectively.