Compatiblity of Bio-control Agents with Agroc...

Compatiblity of Bio-control Agents with Agrochemicals for Development of Effective Disease Management Programme by Avoiding the Use of Incompatible Chemicals: A Review

Author Name : Subrata Chatterjee, Ashish Gautam

ABSTRACT

The use of fungicides has a toxic impact on biological control agents for the treatment of plant disease. The use of fungicides does not interfere with the development of biological control agents. Trichoderma and psudomonas spp. are compatible and tolerant with various agrochemical. In the frame work of integrated disease management system integrating suitable fungicide treatment with fungicide resistant antagonists is getting more importance in recent years for the protection of environment asit is a potential alternative to industrial pesticide environmental issues. To minimize the use of hazardous chemicals, identification and their further testing of these compound may be an effective approach. Trichoderma and Psudomonas spp. exhibit a wide variety of phytopathogens with antagonistic behaviour. Trichoderma spp. is compliant with pesticides and fertilizers and provides important nutrients for any crop in order to safely be used on chemical fertilisers. There will be increased insecticide compatibility with Imidacloprid, Mancozeb and Tebuconazole. Different contact fungicides, including Propineb and Pencycuron, were found to be entirely T. viride compliant and totally incompatible with systemic fungicides like Hexaconazole, Carbendazim, Propiconazole and Tebuconazole. The Trichoderma is highly compatible with the herbicide 2,4-D Sodium salt, Oxyfluoforen and Imazathafir. Bio-control agent Trichodermaharzianum completely compatible with the fungicide metalaxyl, dimethomorph, zineb and sulphur and completely incompatible with propiconazole. At lower concentration P. Fluorescens is extremely compatible with tebuconazole, propiconazole and carbedazim, as well as azoxystrobin, tebuconazole and carbendazim and moderately compatible at moderate levels of these and shows less or no compatibility at higher concentration of these fungicides. With P. fluorescens. all herbicides and insecticides are found to be compatible. While adapting effective integrated pest management programme, the information generated from this study would be helpful in increasing the efficacy of biocontrol agents by avoiding the use of incompatible insecticides.

Key words: Compatibility, Biological control agents, Trichodermaviride, Pesticides, Trichodermaharzianum, Pseudomonas fluorescence, Integrated pest management.