In the United States and Europe for lawns, golf courses and other green pesticides, pesticides have been outside of the traditional separate fourth category of pesticides, known as the Price 3 to 5 times higher. In recent years, many chemical companies to the direction of product development, chemical industry turned to the garden, lawn herbicide R & D is an important position.
foreign turf herbicide application status < br> 1. for the grass lawn in front of herbicides after sowing Long
ring is cool-season grass lawn after sowing the lawn before the best herbicide, 50% wettable powder formulations, it does not have buds ability after the weeding. It germination of grass seed without adverse effects, can effectively control Setaria, bleeding crabgrass, barnyard grass Bromus hair. drawback is not broad-leaved weeds and Control in bluegrass, goosegrass, millet and so on. for turfgrass are: Kentucky bluegrass, tall fescue, perennial ryegrass, creeping bentgrass, etc..
quinclorac in tall fescue and perennial ryegrass can be used at any time after sowing. and its germination of Kentucky bluegrass obvious toxic effects, it should be 14 days after sowing, the seedlings grow to a couple of leaves before use. quinclorac has effects on barnyard grass, and goosegrass invalid, can inhibit the horse Tang, the growth of Setaria.
butachlor for some countries also use chemical weed control before after sowing, and according to experimental observation, butachlor on the germination of cool-season turf obvious toxic effects, and for a long time can not be restored But on Bermuda grass seed germination to be much safer.
2. used for control of grass stems and leaves of broadleaf lawn weeds like acid herbicide MCPA
grass lawn in almost All broad-leaved weeds and sedge weeds effectively, but because of the cost of expensive and difficult to promote. U.S. PBl / Gordon developed with two used for lawn weeding grass trazodone ester mixture: SPeedZone (trazodone grass ester + Dicamba +2,4-D + MCPA acid) for winter lawn care; Powerzone (trazodone grass ester + dicamba + MCPA + MCPA acid) for the summer lawn maintenance. yl Grass is the original keto esters FMC developed fields of cereal crops postemergence herbicide, has been granted administrative protection in China.
Aventis Crop Science in Japan, market development propargyl oxadiazon for lawn maintenance, brand name Fenax. Germany Ai Gefu acid ethyl development, registration fields for cereal crops and grass lawn Control in broad-leaved weeds.
yl ethyl amine grass is the first commercially used to control grass lawn various broad-leaved weeds sulfonamide herbicide treatment to the soil surface before seedling leaf postemergence treatment can be. its soluble in water than in soil under the effect of drought conditions remained stable, persistence in the soil moderate. trifluoro ethyl pyridine is Syngenta (formerly Novartis) developed a new type of sulfonylurea herbicides. In Asia, trifluoro ethyl pyridine has been approved in Japan for broadleaf weeds in lawns Control in , trade name Monument. chloro ethyl morpholine Control in for grass and sedge weeds broadleaf weeds such as velvetleaf, warehouse ears, Mandala, ragweed, Amaranthus retroflexus, wild watermelon seedlings, Polygonum, Portulaca oleracea, Solanum nigrum, Cassia, pull out, Cyperus rotundus and so on. sulfonylurea herbicide used in lawn there sulfa ethyl, cyclopropyl ethyl. sulfonamide ethyl mainly used for Control in broad-leaved weeds , have effects on Galium aparine; Cyclopropyl-ethyl for Control in annual and perennial broadleaf weeds and sedge weeds.
dichloropyridine acid series picloram to Control in the field of annual weeds in lawns, etc. and deep roots of perennial weeds. fluoride is scheduled grass acid pyridine herbicides of oxygen present in the following 3 leaves on the lawn for broadleaf weeds.
3. used for control of grass lawn grass stems and leaves HL lawn weed herbicides British chemical company developed a-double by adding fluorine-based acid tears specific security agent, a high degree of safety for most lawn grasses. The company has more than 20 countries and reported in the patent. a-double fluorine-based acid tears can Kentucky bluegrass, tall fescue, ryegrass, zoysiagrass, bentgrass and other turfgrass leaves efficiently under Control in 9 of Digitaria sanguinalis, Eleusine indica, Setaria, barnyard grass, Leptochloa chinensis, wild oats, teff, etc. Most grass weeds, use the dose of 680 mg / liters. the product at the time a virtual monopoly on the lawn Herbicide weeds in Europe and America market.
In addition, the development of Japan Tobacco Inc. Black rot can be used to control the bluegrass lawn and bentgrass.
4. for the grass lawn grass stems and leaves for control of broadleaf weeds in turf herbicide herbicides Tranxit, a variety of lawn grass are very safe, the main active ingredient in herbicides and jade bud after bud-ethyl. The Pharmacy of Kentucky bluegrass and other broadleaf weeds in turf grass effectively. University of Aberdeen, University of Georgia and other studies have shown that , Tranxit the control of Poa up to 95%. turfgrass management available on its handling of dormant lawn, without having to worry about the lawn were damaged or delayed return to green. in the 4 weeks prior to spraying, but also to create a good environment green lawn back . on the lawn in Growing Season 10-14 days before the application can Control in existing bluegrass, persistence of up to six months.
25% per show house WG's main component pyridine-ethyl, Japan Ishihara Sangyo Co., Ltd. developed a new sulfonylurea herbicides. It has a very high activity of stem and leaf treatment and soil treatment, 25 g / ha to 100 g / ha of active ingredients can effectively Control in the Annual warm season or perennial broadleaf weeds and sedge weeds, annual grass weeds on the good control effect.
5. turf lawn herbicides used in weed bud grass smoke fluoride and fluorine determined sulfur grass pyridine carboxylic acids are, is typical of hormone herbicides. The former is mainly used for Control in broad-leaved weeds, which is mainly used for Control in annual grass weeds and broadleaf weeds, and the herbicidal activity from environmental factors change.
sulfur fluoride in the bud bud grass defense set the lawn in addition to 4 leaf stage of crabgrass the following can also Control in goosegrass, chickweed, spurge, and other annual vicious one, dicotyledonous weeds , and its persistence up to 3 months. It is a root inhibitor of root cell division, it can only be used in mature lawn. can be used for most of the cool season and warm season, but some cultivars sensitive to it, especially bentgrass and fine fescue.
pendimethalin can Control in most of the monocotyledonous and dicotyledonous weeds, including crabgrass, goosegrass, chickweed, Setaria and large Ji, widely used in foreign countries and the most cool-season warm-season lawn weeds.
45% benzyl grass Lung SC, manufacturer Marubeni Corporation of Japan. low toxicity, soil treatment before germination of weeds can Control in the lawn of the annual bluegrass.
1. domestic professionals in the lawn herbicide screening
(1) net grasses, agricultural thinking it, pendimethalin, acetochlor, oxadiazon on high fescue safer, but not in the bluegrass, ryegrass, zoysiagrass, bentgrass and other turfgrass seedlings before use, because the suppression of weeds, but also inhibit the germination of turfgrass.
(2) Trifluralin Ling, weeding through, farmers have, the grass killer, quick to kill weeds in the recommended dosage, in tall fescue seedlings are safe for plant height, shoot fresh weight and leaf color had no significant effect. tests proved that if Trifluralin spraying is suitable for planting in 40 days, emergence, turf are higher than normal.
(3) oxazoline diclofop on ryegrass is more secure. but can inhibit the fresh weight of tall fescue and plant height , root damage, with the watering and fertilization, growth recovered gradually and eventually disappear inhibition. of the obvious toxicity of Kentucky bluegrass, fine roots Ping sparse, difficult to take root, a floor not a block; Kentucky bluegrass turf leaf blades sharp red, yellow, growth was strongly inhibited, black root, tiller difficulties, has been a rapid invasion of susceptible bacteria die.
(4) evil spirits in the recommended dosage of grass, tall fescue has some resistance to effects of the medicine, but will inhibit the plant fresh weight and height, with the lawn gradually restore growth. the role of the other lawn, performance close to the oxazole diclofop.
(5) alachlor, acetochlor, D alachlor, are Seoul on the growth of tall fescue serious inhibition; of turfgrass such as Kentucky bluegrass severe inhibition of germination, but with the disappearance of the color and density of efficacy easy to restore.
(6) Prometryn cable, prometryn + cable: the soil before planting with its processing, spraying 21 days after planting seedlings on the lawn is safer.
(7) bensulfuron, kill barnyard king, pyridine-ethyl in use before after sowing, the normal amount on the lawn was no significant inhibition of seed germination, but the weeds are almost ineffective. the normal dosage limit the use of tall fescue, ryegrass germination obvious distortions; Bermudagrass grass seed germination is almost unaffected; Kentucky bluegrass turf seed germination after the yellow bud, sparse, but not distorted, less roots, and enhance water and fertilizer management 10 days to 15 days after the restoration; good control effect on broadleaf weeds. < br> 2. national experts on the lawn herbicide R & D reported R & D Institute of Chemistry, Central China Normal University pesticides herbicides HW-02, on the kill annual and perennial broadleaf weeds with a rapid and sustained effect. use of HW-02 After 15-20 days of weeds began to wither death; 90 days after the rate of major weeds can still reach 90% to 100%. The herbicide of low toxicity in the soil break down easily, are low toxicity and low residue varieties, good safety performance.
3. the introduction of foreign domestic lawn herbicide applications are outstanding a-double-fluoride-based acid tears, 50% WP, Central Long grass, 25% show a hundred house WG, SC 45% benzyl Long grass and other.
a-double-fluoride-based acid brand name consumer Wo tears, mainly for the turf of Kentucky bluegrass category, type fescue, ryegrass class, Zoysia class, Jian shares Ye Ying Class 9 under the lawn Control in Digitaria sanguinalis, Eleusine indica, Setaria, barnyard grass, teff and other annual grass weeds. the tears a-double-fluoride-based acid with Fluroxypyr, octanoyloxyphenyl bromobenzene cyanide so complex, miscellaneous consumer goods were for bluegrass category, ryegrass class, class fescue, Zoysia class bentgrass turf Control in class most of broadleaf weeds and grass weeds.
50% WP Central Long grass after the compound is mainly used for lawn grass seed after sowing before the treatment, prevention most annual broadleaf weeds and sedge weeds and some annual grass weeds, the persistence of up to 50 days, the integrated weed control effect of up to 70%.
25% per show house is mainly used in water dispersible granules Manila, Bermuda grass, it has a double stem and leaf processing and activity of soil treatment.
