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PL PATH 511 CHEMICALS IN PLANT DISEASE MANAGEMENT                                                                                  (2L+1P) I

Objective
To provide knowledge on the principles and use of chemicals in plant disease management in different crops

Theory

UNIT I
History and development of chemicals; definition of pesticides and related terms; advantages and disadvantages of chemicals.

UNIT II
Classification of chemicals used in plant disease control and their characteristics.

UNIT III
Chemicals in plant disease control, viz., fungicides, bactericides, nematicides, antiviral chemicals and botanicals.

UNIT IV
Formulations, mode of action and application of different fungicides; chemotherapy and phytotoxicity of fungicides.

UNIT V
Handling, storage and precautions to be taken while using fungicides; compatibility with other agrochemicals, persistence, cost-benefit ratio, factor affecting fungicides.

UNIT VI
General account of plant protection appliances; environmental pollution, residues and health hazards, fungicidal resistance in plant pathogens and its management.

Practicals
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

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