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Improvement in Food Resources — Science STD 9 — Question

Gujarat BoardEnglish MediumSTD 9ScienceImprovement in Food Resources3 Marks
Question
Describe the biological method of weed control.
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Answer

Biological method of weed control involves the deliberate use of insects or some other organisms which consume and specifically destroy the weed plants.
Example: Opuntia can be controlled by using cochineal insects in Maharashtra.

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