What are other ways of killing farm pests without using pesticides?

Biological, cultural and mechanical means represent other ways of killing farm pests without using pesticides. Specifically, biological controls refer to the use of a pest's natural enemies. As an example, ladybugs [Coccinellidae family] are natural predators of aphids, mealybugs, mites, and scale insects.

Cultural controls refer to the correction of improper cultivation practices. For example, the soil is checked regularly for proper drainage and pH levels. The organic matter that's called 'humus' and whose well known form is compost is used as a soil amendment, organic mulch or natural fertilizer to put nutrients into the ground and encourage the formation of air and water pore spaces underground.

Mechanical controls refer to physical responses to real and potential problems. In the way of an example, floating row covers are placed over fruit and vegetable crops for protection against such predators as stubborn insects, hungry birds, and foraging wildlife.