Herbicides are chemical substances or preparations
designed to kill plants, especially weeds, or to inhibit their
growth. Herbicides become incorporated in soil directly,
during plant treatment and indirectly, via water or
residues of plant and animal origin. After application,
herbicides can be (i) evaporate (volatilize),(ii) washed
through surface run-off,(iii) leach into deep soil strata and
ground water, (iv) inactivated by plants, or (v) be
adsorbed in soil in which case they become subject to
chemical or microbiological degradation. An ideal
pesticide should have the ability to destroy target pest
quickly and should be able to degrade as non-toxic
substances as quickly as possible. The increased use of
herbicides in agricultural soils causes the contamination
of the soil with toxic chemicals. When herbicides are
applied, the possibilities exist that these chemicals may
exert certain effects on non-target organisms, including
Herbicides are chemical substances or preparationsdesigned to kill plants, especially weeds, or to inhibit theirgrowth. Herbicides become incorporated in soil directly,during plant treatment and indirectly, via water orresidues of plant and animal origin. After application,herbicides can be (i) evaporate (volatilize),(ii) washedthrough surface run-off,(iii) leach into deep soil strata andground water, (iv) inactivated by plants, or (v) beadsorbed in soil in which case they become subject tochemical or microbiological degradation. An idealpesticide should have the ability to destroy target pestquickly and should be able to degrade as non-toxicsubstances as quickly as possible. The increased use ofherbicides in agricultural soils causes the contaminationof the soil with toxic chemicals. When herbicides areapplied, the possibilities exist that these chemicals mayexert certain effects on non-target organisms, including
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