Crop Protection Against Pest

Insects

presented byAshutosh Kumar

Why Crop Protection

How Pests Insect Damage crops

Insect● Direct damage

1locust =2g plant material per day1 million =5000 human food per day

insect can transmit several pathogenic viruses, fungus and bacteria which causes numerals plant disease

Control of Pests Insect Damage

• The objective of Entomologist was primarily to develop and introduce modification into the environment in such a ways that disease will not be spread by insect and crops will not be damage by them

BUT HOW ?

Methods of ● Cultural● Genetic

Crop rotation

parasites BT crops Insecticides

Insecticides by mode of entry

Insecticides By Mode of Action

Problems with Insecticides

Prolong use of an insecticide makes the insect resistant.

Insecticide Resistance Management

• Alternation, sequences or rotation of insecticides from groups with different modes of action can provide an effective approach to IRM in cases where resistance is the result of altered target sites