Dudchenko T. Ecological justification for control of harmful organisms on rice crops in Ukraine

In the dissertation work, the theoretical principles of the control system of the number of harmful organisms under conditions of intensive agricultural technology, in accordance with the requirements of environmental protection policy, have been developed. The objects of the conducted research - rice, harmful organisms and their interaction in agroecosystem. Methods: herbal, phytopathologic, entomological, statistical. The fundamental scientific and methodical principles as well as practical approaches to tackling the issue of the improvement of the protection system of rice crops have been developed. An integrated system of pest control in rice agrobiocenoses has been developed, based on realization of the variety's full potential, reduction of pesticide load, prevention of the formation of resistant populations of harmful organisms, increase of the level of plant protection efficiency by harnessing variety's stability and control of harmful organisms. The maximum load of pesticides per 1 hectare in Ukrainian conditions has been determined, according to the indicator of hazard level, which is in the range from 4.6 to 5.3 kg, l / ha, the index AETI> 1. The integrated system of protection of rice has been developed and recommended for usage in industry. It was published in the monograph - "Basic elements of technology for growing and protecting rice crops from pests". Industries - agriculture, herbalism, entomology, phytopathology.