The modern approach to managing pests is referred to as integrated pest management (IPM).
Weeds, or "plants out of place," compete with fruit crops for nutrients and water, provide a moist environment for disease organisms, and often harbor insects and small animals such as rabbits and mice.
Nematodes undoubtedly are the most numerous multicellular animals in the world. You can pick up a handful of soil almost anywhere and extract nematodes from it.
Many species of insects and mites attack various fruit crops (see Table 2.1). Fortunately, only a few are considered serious enough to prevent a good yield and high fruit quality.
In some cases, pesticides are the only alternative in controlling pests. The pesticides cited here have moderately low mammalian toxicity and degrade soon after application.