Read and follow all label directions and precautions, especially the time interval between application and harvest of the crop. Before starting any kind of treatment, it is essential to obtain a positive diagnosis from a qualified specialist. Resistant Varieties Certain vegetable varieties are resistant to one or more diseases, and the home gardener should take advantage of this built-in protection. Remember, healthy seed and disease-free transplants are essential do not use plants that show abnormalities. Crop Rotation Rotating where vegetables are planted is an excellent way of keeping harmful soil organisms to a minimum.
Experienced gardeners know the value of proper crop rotation.
They are aware that the same crop planted in the same spot year after year decreases in productivity. This is because soil borne diseases, soil insects, nematodes, and toxic chemical residues tend to collect and build up in a given area. As these detrimental factors increase, crop yields decrease. Therefore, it is necessary to rotate the location of vegetables each season. Each family of vegetables has certain unique effects on the soil, and most vegetable varieties within a given family are susceptible to the same diseases and insects.