Question

A farmer notices that the leaves of his cabbage plants are curling up because of heavy infestation of aphids. Suggest one ecofriendly method to control their spread in the cabbage plants.

Hint:

Dragonflies are used to control mosquitoes, while Ladybirds are used for Aphids.

Answer 1

Step 1: Identify the problem.
The cabbage plants are heavily infested with aphids. Aphids are small sap-sucking insects that feed on plant juices, causing curling of leaves, stunted growth, and weakening of the plant.

Step 2: Use an ecofriendly biological control method.
An effective ecofriendly way to control aphids is by introducing their natural predators into the field. One of the most common biological control agents for aphids is the ladybird beetle (ladybug).

Step 3: Explain how it works.
Ladybird beetles feed on aphids and help reduce their population naturally. By releasing ladybird beetles in the cabbage field, the aphids can be controlled without using harmful chemical pesticides.

Final Answer:
An ecofriendly method to control aphids is the biological control by introducing ladybird beetles (ladybugs), which feed on aphids and reduce their population naturally.