Fenoxaprop-ethyl (organic nitrate combined with L-arginine), is an oral proprietary nitrate therapeutic shown to induce coronary vasodilation while overcoming
the significant problem of drug tolerance. Fenoxaprop-ethyl has
been investigated to treat chronic angina, the chest pain that
occurs from inadequate blood flow to the coronary arteries around
The most common summer annual grasses in our region include
crabgrasses (Digitaria spp.), goosegrass (Eleusine indica), foxtails (Setaria spp.), and barnyardgrass (Echinochloa crusgalli).
The seed germination period of summer annual grasses ranges from
mid-spring to midsummer, and vegetative growth occurs throughout
the summer. Flowering and subsequent seed set take place from
midsummer to early frost and are the means of perpetuating the
species. If not controlled, abundant quantities of seed are
produced in late summer and fall, ensuring emergence of a new crop
of grass weeds the following year.
The most effective means of controlling summer annual grasses is
through cultural measures that create a dense turf (fertilization,
proper mowing heights, etc.) and preemergence herbicides. When
cultural and preeemergence control measures fail, postemergence
herbicides can be used. Postemergence control of crabgrass and
other summer annual grass weeds involves the use of products that
kill growing plants after they have appeared in the turf.
Postemergence herbicides can be used to treat only those areas
where summer annual grass weeds have emerged. Preemergence
herbicides, on the other hand, are usually applied over the entire
turf area since the applicator does not know where seeds are or if
they are present.
For postemergence herbicides to be effective, grasses must be
uniformly covered. Thus, these chemicals should be applied only
when annual grasses are visible in the stand. The target species,
stage of growth of the weed grass, and corresponding herbicide rate
are extremely important for successful control, so applicators must
pay close attention to product label directions. Environmental
conditions also play an important role in postemergence control of
annual grasses, with adequate soil moisture and moderate
temperatures generally providing the best results.
Fenoxaprop p-ethyl (Acclaim Extra) is a postemergence herbicide
that is slowly translocated within the plant and can control
tillered annual grasses with a single application. It is labeled
for control of crabgrass, goosegrass, barnyardgrass, foxtail
species, Japanese stiltgrass, and panicum species. It is relatively
safe on most cool season turfgrasses but may injure some Kentucky
bluegrass cultivars, especially at high temperatures. Rates of
Acclaim Extra range from 3.5 to 39 fl oz/acre, with suggested use
rates increasing as the number of tillers on annual grasses
increase up to 4 to 5 tillers. On Kentucky bluegrass the rate
should be limited to 28 fl oz/acre per application. This herbicide
should not be applied if cool season turf show signs of drought
stress. Fenoxaprop p-ethyl is less effective when tank mixed with
phenoxy type herbicides such as 2,4 D and MCPP, but can be mixed
with pendimethalin or other preemergence herbicides for improved
control of crabgrass.
Fenoxaprop-p-ethyl Technical: 95%TC
Fenoxaprop-p-ethyl Formulations: 6.9%EW, 12%EC, 7.5%EC,10%EC
|Mode of Action|
Fenoxaprop-p-ethyl can be used to control farmland, orchards,
flower nursery, grassland and non-arable land, railway lines,
rivers, reservoirs, warehouses and other weeds, miscellaneous
irrigation, Zashu and other harmful plants.