Which method can help in reducing pest populations in a greenhouse?

Introducing beneficial insects and practicing sanitation is an effective method for reducing pest populations in a greenhouse. Beneficial insects such as ladybugs, lacewings, and predatory mites can naturally control pest populations by preying on harmful insects like aphids, spider mites, and thrips. This biological control method is often sustainable, reducing the need for chemical pesticides, which can have negative side effects on the environment and human health.

In addition to introducing beneficial insects, practicing good sanitation is crucial in pest management. This includes maintaining cleanliness in the greenhouse, removing dead plant material, and properly disposing of infested plants. Sanitation helps eliminate breeding grounds and food sources for pests, thus minimizing their numbers and preventing infestations from becoming severe.

Together, these strategies contribute to an integrated pest management approach that is more environmentally friendly and can lead to healthier plant growth.