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Question

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


  1. Bt-cotton to increase cotton yield

  2. Lady bird beetle against aphids in mustard

  3. Nucleopolyhedrovirus against white rust in Brassica

  4. Trichoderma sp. against certain plant pathogens


Solution

The correct option is D

Trichoderma sp. against certain plant pathogens


Of the given options, Trichoderma sp. against certain plant pathogens is an example of microbes carrying out biological control of pests/diseases.
Trichoderma harzianum is a fungus that is also used as a fungicide. It is used for foliar application, seed treatment and soil treatment for suppression of various disease-causing fungal pathogens.

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