Question

What is cultural control of insect? Write the name of any two methods of cultural control.

Answer 1

Answer:

can be controlled by pests

Answer 2

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Cultural control includes such methods of planting, growing and harvesting crops, which will reduce crop damage. Slight modification in the crop rotation, weed control, disposal of crop remnants, resistant varieties, time of planting and harvesting may prove important in combating some insect pests. Control by cultural means can be achieved by the following methods:

1. By resistant varieties: Some varieties of plants show greater resistance to pest damage and should be planted if found desirable from other standpoints. For example, Pawnee-wheat is resistant to Hessian fly; Atlas-sorghum is resistant to chinch bug, rice varieties, namely, IR-36, Pattambi-33, IR-42 are resistant to brown planthoppers. Resistance is hereditary and can be utilized in breeding programmes. There can be several types of characters that make the variety resistant. They may be physical, like hairy leaves, which pose difficulty to potato leafhopper in feeding. Varieties of corn with long tight husk are injured less by corn-earworm. Shape of the onion leaves has an important bearing on the resistance against thrips. Certain chemicals like oxalic acid provide resistance to rice varieties against plant hoppers.

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