Which of the following is an effective biocontrol agent for diseases in cereal crops and vegetables?

  • A
    Endrin
  • B
    Quantum-$4400$
  • C
    Trichoderma-$4400$
  • D
    Quantum-$4000$

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The ladybird beetle and dragonflies are useful to get rid of . . . . . . and . . . . . . respectively.

Pyrethrin is extracted from:

The first bioinsecticide to be developed on a commercial scale was:

What type of poison is ethylene dichloride?

What has led to a reduction in the use of chemical pesticides?

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