What gardeners should know about organic insecticides!

by Ayanava Majumdar, Alabama Cooperative Extension Service

Organic insecticides are critical tools to insect control, especially in the hot and humid south where insect pests never seem to rest. Even in the dead of winter, insect pests such as the yellowmargined leaf beetles can be active in the soil on a warm winter day (just look under some turnip plants and other host plants for deep brown larvae that may be in the ground). In most cases, vegetable plants have should be protected early in the season with a variety of integrated pest management tactics. Insecticides are the last resort for pest management in a sustainable system. With latest advances in IPM technologies, there are several types of organic insecticides to choose from, namely, physical desiccants, contact and stomach poisons, and products with volatile action. Below is a brief description of modes of action and usage tips. Continue reading