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Chapter 3:   MG Manual Reference
Ch. 3, pp. 3 - 76


We generally associate insects with crop loss or disease transmission, but only a small number of insect species (less than 3%) are considered to be pests of humans, animals, crops, or fiber. Most insects are either outwardly beneficial or harmless. A number of them are predators, like lady beetles which live by feeding on pestiferous aphids. Others, like certain wasps, may be parasitic on pest insects. Still others, such as the honey bees, act as pollinators of crops and also provide us with honey. Many insects are responsible for the decomposition of plant and animal matter. Termites are an example of this. Obviously, when they are attacking the timber of our home termites are a pest; however, when they are in the woods breaking down old "felled" trees, they are a part of nature's recycling program. Insects are also food for other creatures such as fish, frogs, birds and bats. Some keep weeds in check. Our life would be much more difficult without insects.

Chapter 3 Index:

Basic Entomology
[ Introduction | Anatomy | Development | Classification | Specific Groups; Coleoptera, Lepidoptera, Diptera, Hymenoptera, Hemiptera, Homoptera, Orthoptera, Isoptera, Dermaptera, Thysanoptera, Thysanura, Collembola, Other insects, Relatives, Other classes ]

Insect Pests
[ IPM | Landscape; Foliage, Sap, Trunk, Root | Turf Grass; Root, Leaf, Sap, Nuisance | Household; Structures, Living Quarters, Products | Outdoor | Citrus | Fruits | Gardens ]

General Control Principles
[ Preface | Cultural | Mechanical | Biological; Predators, Parasites, Diseases, Conclusion ]

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