DESCRIPTION OF COURSES
PL PATH 511 CHEMICALS IN PLANT DISEASE MANAGEMENT (2L+1P) I
To provide knowledge on the principles and use of chemicals in plant disease management in different crops
History and development of chemicals; definition of pesticides and related terms; advantages and disadvantages of chemicals.
Classification of chemicals used in plant disease control and their characteristics.
Chemicals in plant disease control, viz., fungicides, bactericides, nematicides, antiviral chemicals and botanicals.
Formulations, mode of action and application of different fungicides; chemotherapy and phytotoxicity of fungicides.
Handling, storage and precautions to be taken while using fungicides; compatibility with other agrochemicals, persistence, cost-benefit ratio, factor affecting fungicides.
General account of plant protection appliances; environmental pollution, residues and health hazards, fungicidal resistance in plant pathogens and its management.
Acquaintance with formulation of different fungicides and plant protection appliances. Formulation of fungicides, bactericides and nematicides; in vitro evaluation techniques, preparation of different concentrations of chemicals including botanical pesticides based on active ingredients against pathogens; persistence, compatibility with other agro-chemicals; detection of naturally occurring fungicide resistant mutants of pathogen; methods of application of chemicals