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 CHEMICAL, PHYSICAL, AND BIOLOGICAL PROPERTIES OF HERBICIDES AND PLANT GROWTH REGULATORS -- Continued
Acute Oral
Common and
Chemical Designations1
Toxicity,
Dermal
Trade Name and
(Cost per Pound;. and
L D50 (mg/kg)
Biological Information and Remarks
Manufacturer2
Toxicity
and Rating
Commercial Formulation
DSMA (see methane arsonates)
Soil-applied herbicide for control of annual broad-
moderately
3,400
KARMEX Weed
Diuron
leaf and grass weeds in cotton, sugarcane, grapes,
toxic
moderately
Killer
3-(3,4-dichlorophenyl)-
apples, pears, citrus, and alfalfa. At higher rates it
toxic
DuPont
1,1-dimethylurea
can be used as a general weed killer, but is generally
DREXEL
($4.70/lb; wettable
less effective than bromacil. It has some specialized
DIURON 4L
powder, flowable liquid)
uses. Diuron is a strong inhibitor of photosynthesis.
Drexel
Adsorption on soil increases as clay content and
organic matter content increases. Microbes are the
primary cause of diuron disappearance from soil.
Leaching is very slow. When applied at soil sterilant
rates, it may persist for more than a year.
Selective postemergence annual and perennial grass
slightly
2,500
ACCLAIM
Fenoxaprop-ethyl
control in several cool season turfgrass species.
toxic
moderately
Holchst-Rousell
()-ethyl 2-[4-[(6-
Approved for use in sod farms, commercial, and
toxic
Agri-Vet
Chloro-2-benzoxazolyl)
residential turf and rights-of-way. It is absorbed
oxyl] phenoxy] propanoate
primarily through foliage, but is not translocated
($276.41 /lb emulsifiable
from one tiller to another. Therefore, it is critical
concentrate liquid)
that all exposed foliage be thoroughly and uniformly
covered. The product should not be applied during
periods of severe drought stress. Kentucky bluegrass
should not be seeded for a minimum of 21 days
following application.
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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