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Which one of the following is an example...

Which one of the following is an example of carrying out biological control of pests/diseases using microbes ?

A

uclepolyhedrovirus against white rust in Brassica .

B

Bt- cotton to increase cooton yield

C

Lady bird beetle aginst aphids in mustard .

D

Trichodroma Sp. Against certain plant pathogens .

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The correct Answer is:
D
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