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 heart.
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.