Quantcast Chemical, Physical, and Biological Properties of Herbicides and Plant Growth Regulators -Cont. - mo3140100

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CHEMICAL, PHYSICAL, AND BIOLOGICAL PROPERTIES OF HERBICIDES AND PLANT GROWTH REGULATORS -- Continued
Common and
Acute Oral
Chemical Designations1
Toxicity,
Dermal
(Cost per Pound; and
Trade Name and
L D50 (mg/kg)
Manufacturer2
Biological Information and Remarks
Toxicity
Commercial Formulation
and Rating
A soil-applied herbicide used as a soil sterilant in
Sodium Chlorate
very
SODIUM
5,000
noncrop situations. It is a strong oxidant. When in
toxic
NaCLO3
CHLORATE
slightly
contact with combustible materials, it may cause fire.
($0.45/lb; water-
Penwalt Corp.
toxic
Clothing and vegetation contamination with chlorate
soluble crystals)
DEFOL
or its solutions are DANGEROUSLY FLAMMA-
Drexel
BLE. Follow instructions on the label completely.
Often mixed with fire suppressant such as borate. It
persists in soil for more than a year.
slightly
A soil- or foliage-applied herbicide for noncropland
Sulfometuron
OUST
5,000
control of herbaceous broadleaf weeds and some
toxic
methyl 2-[[[[(4,6-di =
slightly
DuPont
grasses. At moderate rates in the South, it can
methyl-2-pyrimidinyl) =
toxic
control broadleaf weeds selectively in established
amino]-carbonyl]amino] =
bermudagrass. It is not very toxic to the root system
sulfonyl]benzoate
of most trees and many woody shrubs, and may be
($152.50/lb; dry
useful as directed spray at low rates for control of
flowable granules)
vegetation under trees. It is absorbed by roots and
foliage of weeds, and translocates throughout the
plant. It arrests cell division in the growing tips of
roots and tops, and gradually the plant is killed. The
lower the soil pH, the higher the organic matter, the
greater the adsorption on soil. Chemical hydrolysis
and microbial activity decompose sulfometuron in
soil. The half-life during summer is about 4 weeks.
Little decomposition occurs in frozen soil.
1
A chemical name occupying two lines separated by an equal (=) sign would be joined together without any separation if written on one line.
2
Mention of trade name or company is for information only, and does not constitute an endorsement over other products not mentioned.





 


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