PESTICIDES
Pesticides are basically substances used for preventing, destroying, reepelling or mitigating any pest.
- Pesticide is a general classification that includes insecticides, herbicides, fungicides, nematicides and rodenticides.
- They have had a significant impact on agriculture as by destroying plant pests they help in increasing the crop production.
- However, pest organisms can become resistant against pesticides due to some mutation resulting in new strains of the pests, which could be more virulent and damaging to plants.
- The term "pest" also includes weeds, which by competing withe crop plants reduce their overall yield.
- An ideal pesticide is a substance whose action is specific to the target pest, which is harm less to all other members of the ecosystem and which is degraded to a harmless residue whenever its action completes.
- The development of such a model pesticide is still a very long way because commonly used synthetic phosphorous and chlorinated pesticides leave toxic residues and contaminate the environment, while the new natural pesticides are poised to be eco friendly.
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