A simple way to identify weeds is to compare them to colored photographs and drawings. To identify weeds yourself, become familiar with plant classification system and the weeds physical features, developmental stages, and life cycles. We will discuss weed control within the next few topics. Invertebrate pests include insects and their relatives, nematodes, snails and slugs. Ticks, mites and spiders have only two body parts and eight legs.
Nematodes are a large group of unsegmented worms that can be plant parasites.
Snails and slugs are mollusks that prefer cool, moist surroundings. They include fish, amphibians, reptiles, birds and mammals. Most of our concern is with birds and mammals. Rodents are mammals that interfere with people, or cause harm to crops and livestock. Disease agents cause diseases in plants and animals.