Many gardeners are looking for minimal uses for pesticides in order to keep their gardens free from pest. There are various ways for disease and insect control. If you want to discourage the use of pesticides, then you should understand the needs of healthy plants and learn how to manage pests in your climate. You may also seek the scientifically proven methods for alternative pest control from your local extension office.
Preventing Pest Problems – By using the healthy plants in the garden from the beginning, you can prevent the pests from infecting it. The Plant breeders are continually experimenting with the plants that are resistant to common diseases like powdery mildew on garden phlox or verticillium wilt on tomatoes. You need to pick plants that grow well in the climate and then maintain them with proper water; fertilizer and soil conditions. You can also ensure good air circulation for preventing fungal diseases.
Physical Controls – You can practise various physical controls like weeding, picking off caterpillars or other insects for managing insects and diseases in your ornamental and vegetable gardens. You can provide a barrier to the source of the pest. Examples of such barriers is mulching for avoiding soil splash on the lower leaves of plants as soils contain bacteria or other pathogens. Another example of a physical control is to put light netting over strawberries and broccoli for excluding insect pests.
Biological Controls – You can also use many biological options to control pests via enemies of common diseases and insects. The predatory insects like lacewings and ladybugs with beneficial fungi or bacteria like Bacillus thuringiensis (Bt) are useful control methods for preventing common aphids and caterpillars. Another example is addition of compost to the soil for keeping away the fungi and bacteria.
Organic Pesticides – You can also use the organic pesticides which are naturally occurring substances in the climate. Some examples are usage of pyrethrin-type pesticides, Neem, insecticidal soap and horticultural oil.