Plantwise Factsheets for Farmers
Conservation of natural enemies of pests of vegetables
Recognize the problem
As a tropical country with a high
biodiversity in our ecosystems we have natural enemies in abundance. They
perform a very useful role in the management of pests in vegetable crops. However,
due to indiscriminate use of pesticides, they are being destroyed. Conserving
natural enemies provides a cost-free and eco-friendly way of managing the pests
in vegetable cultivation.
In their natural habitat, natural enemies feed
on phytophagous insects, nectar, pollen & other plant saps. If undisturbed,
these conditions are highly favourable for natural enemy population growth. The
natural enemies in the agro-ecosystem do not allow pest populations to build up
to very high levels.
unnecessary spraying of insecticides at the first phase of the crop
- Maintain some undisturbed natural vegetation in bunds, surroundings, etc. If any weeds act as a host to the main pest(s) affecting the crop, these weeds should be removed.
not burn stubble after harvest unless it is affected with pests such as bacterial wilt
- Mix organic manure into soil
multiple cropping rather than mono-cropping
The recommendations in this factsheet are relevant to:
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