All material for the protection of crops and plants against pests and diseases, predators, bad weather, etc. (insecticides, fungicides, herbicides, poisoned baits, bird scarers, anti-hail shells, frost protection, etc.).
Hea teada
crop insecticides are said to be foliage or soil insecticides according to whether they are applied to the leaves or to the soil to protect the root system. Another important subdivision is between systemic and contact insecticides.
