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  2. Herbicide - Wikipedia

    en.wikipedia.org/wiki/Herbicide

    The herbicides kill weeds as they grow through the herbicide-treated zone. Volatile herbicides have to be incorporated into the soil before planting the pasture. Crops grown in soil treated with a preplant herbicide include tomatoes, corn, soybeans, and strawberries. Soil fumigants like metam-sodium and dazomet are in use as preplant herbicides ...

  3. Weed control - Wikipedia

    en.wikipedia.org/wiki/Weed_control

    Selective herbicides kill certain targets while leaving the desired crop relatively unharmed. Some of these act by interfering with the growth of the weed and are often based on plant hormones. Herbicides are generally classified as follows: [citation needed] Contact herbicides destroy only plant tissue that contacts the herbicide. Generally ...

  4. Environmental impact of pesticides - Wikipedia

    en.wikipedia.org/wiki/Environmental_impact_of...

    Pesticides, because they are toxic chemicals meant to kill pest species, can affect non-target species, such as plants, animals and humans. Over 98% of sprayed insecticides and 95% of herbicides reach a destination other than their target species, because they are sprayed or spread across entire agricultural fields. [1]

  5. Crop desiccation - Wikipedia

    en.wikipedia.org/wiki/Crop_desiccation

    They induce plant death/defoliation rapidly and dry down occurs within a few days. True desiccants do not often provide good weed control because killing only the top growth may allow plants to begin re-growing again. In contrast, systemic herbicides are absorbed by foliage or roots and translocated to other parts of the plant.

  6. 2,4-Dichlorophenoxyacetic acid - Wikipedia

    en.wikipedia.org/wiki/2,4-Dichlorophenoxyacetic_acid

    2,4-Dichlorophenoxyacetic acid is an organic compound with the chemical formula Cl 2 C 6 H 3 OCH 2 CO 2 H.It is usually referred to by its ISO common name 2,4-D. [4] It is a systemic herbicide that kills most broadleaf weeds by causing uncontrolled growth, but most grasses such as cereals, lawn turf, and grassland are relatively unaffected.

  7. Pesticide - Wikipedia

    en.wikipedia.org/wiki/Pesticide

    Herbicides can be used to clear roadside weeds, trees, and brush. They can also kill invasive weeds that may cause environmental damage. Herbicides are commonly applied in ponds and lakes to control algae and plants such as water grasses that can interfere with activities like swimming and fishing and cause the water to look or smell unpleasant ...

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