Write the advantages and disadvantages of Bt cotton.

Explanation

Advantages of Bt cotton:
(i) Yield of cotton is incrreased due to effective control of bollworms.
(ii) Reduction in insecticide use in the cultivation of Bt cotton.
(iii) Potential reduction in the cost of cultivation.
Disadvantage of Bt cotton:
(i) Cost of Bt cotton seed is high.
(ii) Effectiveness up to 120 days after that efficiency is reduced.
(iii) Ineffective against sucking pets like jassids, aphids and whitefly.
(iv) Affects pollinating insects and thus yield.