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The plants soon begin to wilt and quickly dry out in the sun. Plants can burn within hours of exposure to these herbicides. [ 16 ] In contrast, Photosystem I inhibitors such as diquat and paraquat work by entering plant cells and immediately diverting electrons away from photosynthetic chain, poisoning photosynthesis .
The pesticide manual provides much information on pesticides. [6] [7] Many of the insecticides in the list are not in use. The developer of a pesticide applies for a common name when they intend to sell it, but some nevertheless do not reach the market. Many insecticides have been banned or otherwise withdrawn from the market over the decades.
A trap crop is used for attracting the insect and pests away from a target crop field. Many trap crops have successfully diverted pests from focal crops in small scale greenhouse, garden and field experiments; [ 1 ] a small portion of these plants have been shown to reduce pest damage at larger commercial scales.
Acephate is an organophosphate foliar and soil insecticide of moderate persistence with residual systemic activity of about 10–15 days at the recommended use rate. It is used primarily for control of aphids, including resistant species, in vegetables (e.g. potatoes, carrots, greenhouse tomatoes, and lettuce) and in horticulture (e.g. on roses and greenhouse ornamentals).
"Plant-derived insecticides (e.g., rotenone, veratridines, pyrethrins, and nicotine) have been used for insect control since antiquity." [6] The active ingredients in these plants have been purified and modified. For example, variations on pyrethrin have spawned a large number of synthetic insecticides called pyrethroids.
Methamidophos, trade name "Monitor," is an organophosphate insecticide.. Crops grown with the use of methamidophos include potatoes [1] and some Latin American rice. [2] Many nations have used methamidophos on crops, including developed nations such as Spain, United States, Japan, and Australia.
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