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Publisert:
17.10.2023 | Oppdatert: 18.11.2024
Phytotoxicity
Phytotoxicity
of herbicides
Phytotoxicity is the toxic effect of a chemical compound / substance on
plant growth and development.
Phytotoxicity can leads not only
to plant stress, but also create changes in quantitative parametrs - a decrease
in growth energy, a decrease in plant productivity and a decrease in the
quality of the crop.
Phytotoxicity is harm and damage to plants, which
can be caused by a wide range of chemical compounds of natural and
chemical origin, as well as their combined effect: traces of metals,
soil acidity, soil salinity, pesticides, phytotoxins or allelochemicals.
Unfavorable environmental conditions (weather, soil, etc.) can increase
the effect of phytotoxicity.
Herbicides
phytotoxicity and its combination with soil acidity is the most common
in agriculture. Herbicides are designed to kill plants and are very
beneficial - used to control unwanted plants such as weeds.
However, herbicides can cause phytotoxic effects in plants with
different types of contact with plants:
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when drifting / drifting outside the area to which the herbicide is
applied, for example, as a result of drift, spray spray, wind, or the
use of a herbicide-contaminated sprayer or materials (such as straw or
manure)
-
as a result of the action of residual amounts of herbicides remaining in
the soil after the application of the herbicide (since some herbicides
decompose in the soil for a long time)
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human errors, for example, if herbicides, fields, crops were confused, the
norms are overestimated, the regulations for the application of
herbicides are not followed, etc.
Photo © Dr.
Oleksii Orlov
Strong phytotoxicity manifests itself in the form of plant stress, as in
this case - yellowing, stunted growth, deformation of the growing point
after the application of Clearfield herbicide on sunflower, which was
tested for the level of herbicide resistance.
Contact Agricultural
Consulting for audit of pesticides use and increasing of the
effectiveness of their use!
The phytotoxicity of herbicides must be taken into account when planning
crop rotations - and planning crop rotation, because after the
application of some herbicides, crops can reduce the yield or die.
Often, the harm from phytotoxicity is not visible visually, it manifests
itself only in a decrease in yield.
If the phytotoxicity is strong, then this
manifests itself in the form of plant stress - growth retardation,
changes in growth and color, in which case, even if the plants do not
die, their yield will decrease.
For a successful farmer, it is very
important that herbicides are
applied correctly, so that there is no
phytotoxicity and crop stress, in this case, you can increase work
efficiency, save money and get the greatest profit from the agricultural
business.
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agronomy
support
for record
yields
from Agricultural Consulting!
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