CHEMICAL, PHYSICAL, AND BIOLOGICAL PROPERTIES OF HERBICIDES AND PLANT GROWTH REGULATORS -- Continued
Trade Name and
(Cost per Pound; and
L D50 (mg/kg)
Biological Information and Remarks
Preemergence, soil-applied herbicide that controls
germinating annual-grasses and some broadleaf
isopropyl m -chloro =
weeds in leguminous crops, vegetable crops, orna-
mental plantings, and established grasses grown for
seed. It controls chickweed and purslane at any stage
of growth. Chlorpropham is absorbed through the
coleoptiles of emerging grass plants and through the
roots of older plants. It is readily translocated
upward in the plant. It inhibits root and epicotyl
growth, and suppresses transpiration and respiration.
It also disrupts cell division, and inhibits RNA and
protein synthesis. It is adsorbed on organic matter
and broken down by microorganisms. It is a volatile
herbicide with a half-life in soil of 30 days at 98 F.
Auxin-type selective herbicide used as foliage spray
for control of many annual and perennial weeds and
woody plants. Absorbed by both foliage and roots.
Especially effective against members of the polygona-
ceae, compositae (Canada thistle) and leguminosae
(mesquite) families while showing poor activity
against species of grasses and crucifers (mustards).
Its use with 2,4-D, MCPA, and dicamba extends the
spectrum of species controlled. Physiological action
thought to be similar to the phenoxy herbicides. Not
strongly adsorbed by soil and could be subject to
leaching. It is degraded by microbes in soil with a
half-life of 12 to 70 days.
A chemical name occupying two lines separated by an equal (=) sign would be joined together without any separation if written on one line.
Mention of trade name or company is for information only, and does not constitute an endorsement over other products not mentioned.