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Definition of pests :
Are living organisms that infect plants , and caused her loss directly or indirectly in all stages of growth even after storage products , which affects the agricultural production in quantity and quality .
For each neighborhood and ways of living organism to multiply and conditions suitable for growth and breeding to maintain the kind of extinction and other adverse conditions hamper activity and reproduction .
Divided pests into:
Insects: Insects are not all harmless, but including beneficial insects, called lesions usually utter only the harmful insects.
Examples of harmful insects (insect pests) common and widespread in the environment, bollworms and aphids and whitefly and fruit flies and Nakharc timber, excavators and the types of weevils, beetles and others.
It is noted that there is some specialization between these different types of insect pests, where certain some crops affects only without the other, but is associated with some specific parts of plants or trees, as certain phases associated with the lesion itself (larval or developed nymph and developed adult insect) Certain parts of plants or trees , causing them damage , while the rest of the phases of the lesion to be harmless .
Plant diseases : it includes three groups often differ depending on the cause of her patients .
There are plant diseases caused by fungi and other caused by viruses and bacteria caused by a third
One of the mammals, the most important and most damaging mice, one of the most dangerous animals of agricultural and horticultural crops, vegetables and materials stored on different types where the cause significant damage.
And it has spread recently in mice significantly threatened with a lot of plants and agricultural products, whether in the fields or in the stores. Economic losses are not limited to direct fed on agricultural products, but also to large losses is a direct result of the continuation of the loan that used by the mouse to limit the growth of his teeth instinct, in addition to the health damage caused to humans and animals, including moving from pathogenic bacteria and fungi that