Igor G. Balanced development of agroecosystems on an example of Chernigiv area.

Thesis for the degree of Doctor of Agricultural Sciences in the speciality 03.00.16. "ecology". Institute of Agroecology and Biotechnology UAAS, Kiev. 2005. The thesis is dedicated to the idealized substantiation and of practical methods of creation steady agroecosystems on an example of the Chernigiv area, which re-spond to the nature protection concept of land usage and biological (organic) agricul-tural, provide steady effect of qualitative production of the plant industries and ani-mal industries at minimum costs of power and material resources . On an example of the Chernigov area the reference directions of ecological se-cure usage of ground are established, that has enabled to suspend processes of degra-dation in soil, to recommend ecological secure crop rotations, to increase on 10% and more productivity of potato, linen and grain branches, improve their quality, effecting of forages and other. Is rosined, that usage of ecological secure technologies pro-motes optimization of growth and development of plants, improves their quality at the expense of creation of favorable conditions of their feed, destruction of weeds and activating of habitability of a biota of soil. For conditions of Polissya the system of reproduction of fertility of soils to in-crease productivity of agricultural cultures is adapted and which should execute pre-dominantly at the expanse of biological means. The fundamentals of high-performance management of cattle-breeding branch, especially meat are designed. The ecological and economical measures of increase efficiency of refining branch are studied and designed. The knowledge concerning with farmer managing is detailed.