advantage and disadvantage of BT cotton
Answers
Explanation:
Bt cotton has several advantages over non-Bt cotton. The important advantages of Bt cotton are briefly :
Increases yield of cotton due to effective control of three types of bollworms, viz. American, Spotted and Pink bollworms.
Insects belonged to Lepidoptera (Bollworms) are sensitive to crystalline endotoxic protein produced by Bt gene which in turn protects cotton from bollworms.
Reduction in insecticide use in the cultivation of Bt cotton in which bollworms are major pests.
Potential reduction in the cost of cultivation (depending on seed cost versus insecticide costs).
Reduction in predators which help in controlling the bollworms by feeding on larvae and eggs of bollworm.
No health hazards due to rare use of insecticides (particularly who is engaged in spraying of insecticides).
Disadvantages of Bt Crops
Bt crops have a few disadvantages as well:
Bt crops are costlier than naturally grown crops.
It can disrupt the natural process of gene flow.
The pests might become resistant to the toxins produced by these crops and the crop production might decline.
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