Vasylenko M. Agroecological approaches to application of new domestic ecologically safe Fertilizers and Plant Growth Regulators in the Agroecosystems of Forest-Steppe zone and Polissya zone of Ukraine.

Implementation of the work is caused by sharp aggravation of the problem of land degradation and desertification as well as a serious challenge to sustainable development of the country, which creates significant problems. Their solution is the most urgent task. One of the ways of implementation of the concepts of land degradation and desertification, preserve and enhance the productivity of the land is the implementation into the agricultural production of energy-saving technologies with application of new domestic fertilizers and plant growth regulators. It is proved that instead of the traditional energy-consuming technologies must come principally new technologies of agriculture, integrated land management and coordination of economic and environmental interests. Therefore, the issue of learning and scientific substantiation of the use of new domestic ecologically safe fertilizers and plant growth regulators, produced in Ukraine on the basis of domestic raw materials has gained special importance. Using organic mineral fertilizers (OMF) and plant growth regulators (PGR) has significant effect on the immune status of the plants, reducing the spread of disease in crops of wheat, corn and soybeans. This makes it possible to reduce the use of pesticides in agrocenoze by 25-30%. It was found that the use of organic mineral fertilizers and plant growth regulators of a new generation stimulates the development of nitrogen-fixing microorganisms, which in turn contributes to the enrichment of the soil by nitrogen compounds available to plants, while at the same time increasing the content of the total microbial mass and reduced soil phytotoxicity. The use of new mineral fertilizers (mixed fertilizers, ammophos-34), Humisol, OMF (Vitalist, Oasis and Dobrodiy), PGR (Endophyte, Ecosystem, Neophyte, Noostym, Vegestym and Agrostym) and microbial substances (Azotovit, Embrionik) significantly increases productivity and improves quality of wheat, corn and soybeans, contributes to increasing the economic efficiency of use of fertilizers and PGR. Ecological and economic feasibility of the use of new domestic fertilizers and plant growth regulators was scientifically substantiated and practically proved.