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- Dictionarypes·ti·cide/ˈpestəˌsīd/
noun
- 1. a substance used for destroying insects or other organisms harmful to cultivated plants or to animals.
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noun
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Pesticides are substances that are used to control pests. They include herbicides, insecticides, nematicides, fungicides, and many others (see table). The most common of these are herbicides, which account for approximately 50% of all pesticide use globally. Most pesticides are used as plant protection products (also known as crop protection products), which in general protect plants from weeds, f... Wikipedia