CN104396994A - Mixed weedicide containing flazasulfuron, butachlor and trifluralin - Google Patents

Abstract

The invention discloses a mixed weedicide containing flazasulfuron, butachlor and trifluralin. The mixed weedicide adopts flazasulfuron, butachlor and trifluralin as main effective components, wherein the mass ratio of flazasulfuron to butachlor to trifluralin is (0.1-80) to (0.1-80) to (0.1-80). The mixed weedicide can be applied to weeding in front of and behind lawn seedlings, particularly to prevention and removal of various grassy, cyperaceous and broad-leaved weeds in the lawn, and has a remarkable effect; in addition, the mixed weedicide has a relatively good synergetic effect, can delay the resistance of the weeds, and is wide in weeding spectrum, long in lasting time, safe to the lawn and remarkably superior to a single weedicide in effect.

Description

A kind of mixed herbicide containing flazasulfuron, butachlor and trefanocide

Technical field

The invention belongs to technical field of pesticide, relate to a kind of weed killer herbicide, be specifically related to a kind of flazasulfuron, butachlor mixes built agent with the ternary of trefanocide, this herbicidal composition can be applicable to before the bud of lawn and weeding after early stage bud.

Background technology

Along with the quickening of Urbanization in China, the lifting of urban afforestation standard and increasing substantially of urban size, arising at the historic moment in various lawn, has caused the great demand to lawn, and Development of Turf has good business opportunity., aesthetic firm in infrastructure such as guarantee highway, railway, airport, reservoir, riverbank, Hu Di, lawn is important auxiliary equipment; In urban construction, afforestation, can better people's living environment greatly in lawn, effectively reduce " tropical island effect " in city.The area of green grassland, quality reflect The Surroundings in Cities quality and civilization degree.Some developed countries as the city of the U.S., European Union especially using Lawn Industry as one of national pillar industry.At present, the Lawn Industry of China has large development, but not yet forms complete integrated industrial system.Lawn is beautified and is improved in China's urban construction, living environment in the spiritual civilization level of the people and plays key player, and it not only has very high economic benefit, and has huge ecological benefits and social benefit.

But, because management is improper, there is Quality Down in a lot of lawn, the problems such as turfgrass is dead, weedy, damage by disease and insect occur again and again, the use value on serious reduction lawn and landscape value, cause a large amount of fund wastes, so research turf management technology, especially Kill weeds technology is the important measures changing lawn present situation and improve ecotope.

Artificial weeding, throwing work is large, weeding is thorough, has the disadvantage of trampleing on lawn, thus reduces turf quality.Some places have to change lawn, costly.Chemical weed control saving of work and time, low-cost high-efficiency, later stage weeds generating capacity is few, and this is that artificial uprooting weed institute can not be than.And chemical weed control also has sealing process, the weeds later newly gone out want much less.Chemical weed control is few to lawn interference, for Turfgrass Growth provides rational environment.Weeding expense is low, and an expense is the l/3-l/4 of labour cost, and the expense of a year is the 1/4-1/5 of labour cost.Labour intensity is low, and a people can spray 7-9 mu lawn every day, and machine nebulization efficiency is higher, has large area weeding advantage.In order to reduce the economic loss that crop smothering causes, reduce labor intensity, simultaneously also because chemical weed control is convenient, quick-acting, the control time is long, chemical weed control is gradually by people are accepted.

Flazasulfuron (flazasulfuron) is the sulfonylurea herbicide being originated in the exploitation of industry chemical company by Japanese stone.Chemical name 1-(4,6-dimethoxypyridin-2-base)-3-(3-trifluoromethyl-2-pyridine sulfonyl sulfonyl) urea, its structural representation is as follows:

Flazasulfuron is acetolactate synthestase (ALS) inhibitor.The main reaction suppressing the predecessor acetolactate synthestase producing side chain amino acid, leucine, isoleucine and valine.This medicament broad weed-killing spectrum, annual broad-leaved and grassy weed in Weeds in Turf that can not only be fabulous, and perennial broadleaf weed and sedge weed can also be prevented and kill off, as lady's-grass, barnyard grass, eleusine indica, annual bluegrass, amur foxtail, green foxtail, the rhizome of nutgrass flatsedge, kyllinga brevifolia, cyperus iria, difformed galingale herb, alternanthera philoxeroides, Horseweed Herb, white clover, it is recklessly appropriate, Tufted Cerastium, creeping oxalis, hairy tare, pale reddish brown order place, clover, pale persicaria, sheep hoof, class humid euphorbia, greater plantain, argy wormwood, sweet vernal grass, green amaranth, shepherd's purse, benbie, common vetch, chickweed etc., to short leaf kyllinga brevifolia, lady's-grass and rhizome of nutgrass flatsedge preventive effect splendid.

Generally, process after weeds stop growing immediately, absorbs the leaf chlorisis newly sent afterwards for 4-5 days, then gradually necrosis and spread to whole plant 20-30 days weeds thoroughly withered.This medicament absorbs by weeds cauline leaf, and can suppress suppressing weed seed germination in soil again, the control time is longer, and the lasting period is about more than 40 days in spring and summer, and autumn and winter is more than 120 days.

Flazasulfuron is the herbicides special that first, China is formally registered on warm-season turf (Korea lawn grass class and Bermuda grass class).Can rapidly medicament be decomposed, be converted into innocuous substance after Korea lawn grass contacts medicament with Bermuda grass class turfgrass, the normal growth on lawn can not be affected, high to turfgrass safety.Use in lawn resting stage, germination in the future and growth can not be affected.Be widely used in greening lawn, golf course etc.

Butachlor (Butachlor), has another name called weed eradication spy, Machete, is the weed killer herbicide of the chloro-acetyl amine developed by Monsanto Company, chemical name: N-(fourth oxygen methyl)-α-chloro-2 ', 6 '-diethyl acetanil.Its structural representation is as follows:

Butachlor is acetamide-group herbicides, absorbs mainly through weeds young shoot and immature secondary root, suppresses body internal protein to generate, makes the enlargement of weeds shoot, deformity, finally cause death.Butachlor stability in soil is little, stablizes, can be decomposed by edaphon light.Effectively prevent divided by the grassy weed of seed germination, annual nutgrass flatsedge and some annual broadleaf weeds as barnyard grass, lady's-grass, green foxtail, Monochoria vaginalis, Drilgrass, difformed galingale herb, needle spikesedge herb etc.Favorable effect is had to Monochoria vaginalis, Drilgrass, cusp flower and firefly Lin etc., but nearly unavailable to perennial weeds such as water Rhizoma Sparganii, wild arrowheads.

Trefanocide (Trifluralin) is the phenyl amines weed killer herbicide developed by Dow AgroSciences.Chemical name: 2,6-dinitro-N, N-diη-propyl-4-5-trifluoromethylaniline.Its structural formula is as follows:

Trefanocide is processing soil treatment agent before selectivity bud, suppresses microtubule system.Trefanocide passes in soil layer process absorbed by weed seed at germinating growth, and mainly absorbed by with the bud scale of gramineous plants, the hypocotyl of broad leaved plant, cotyledon and young root also can absorb, but little to bud and the conduction of other organs after absorbing.After emerging, the stem of plant and leaf can not absorb.Enter in plant corpus the generation or transmission that affects hormone and cause its death.Mainly prevent and kill off the broad leaved weed of grassy weed and part small-sized seed, as careless in barnyard grass, lady's-grass, eleusine indica, moleplant seed, eragrostis cilianensisLink, annual bluegrass, bromegrass, hard grass, caput, amaranth, lamb's-quarters, kitchen garden, chickweed, Liao, pivot store, puncture vine etc.Lasting period is long.Volatile, easy photodissociation, aqueous solvent are minimum, not easily move in soil layer.

Current lawn herbicide limit by safety, herbicide spectrum is also limited, be used alone the generation that a kind of weed killer herbicide single dose can not control turf weed completely effectively, moreover some weed killer herbicide is due to water-soluble large or the field lasting period is oversize, consumption is excessive or dispenser is uneven all easily causes residual hazard.

Summary of the invention

The object of this invention is to provide a kind of mixed herbicide containing flazasulfuron, butachlor and trefanocide.

Another object of the present invention is to provide the application of this weed killer herbicide in Kill weeds.

For achieving the above object, it is different that the present invention selects herbicide to compose, be made into mixture after the flazasulfuron of pluses and minuses complementation, butachlor and trefanocide three kinds of suitable decrements of weed killer herbicide to use, so both expand herbicide spectrum, significantly improve herbicidal effect, it also avoid possibility lawn being produced to poisoning and residual hazard.The present invention specifically adopts following technical scheme:

Containing a mixed herbicide for flazasulfuron, butachlor and trefanocide, this weed killer herbicide is with flazasulfuron, butachlor and trefanocide for principle active component, and wherein, the mass ratio of flazasulfuron, butachlor and trefanocide is 0.1 ~ 80:0.1 ~ 80:0.1 ~ 80.

In this mixed herbicide, the mass ratio of flazasulfuron, butachlor and trefanocide is preferably 1 ~ 70:1 ~ 60:1 ~ 60.Mass ratio more preferably 1 ~ 5:1 ~ 20:1 ~ 60 of flazasulfuron, butachlor and trefanocide.

In a kind of technical scheme, the mass ratio of flazasulfuron, butachlor and trefanocide is preferably 1 ~ 5:5 ~ 20:10 ~ 50.

In another kind of technical scheme, the mass ratio of flazasulfuron, butachlor and trefanocide is 1:10:14 or 2:15:23 or 5:5:60 or 3:20:47.

In mixed herbicide of the present invention, flazasulfuron, butachlor and the mass percentage of trefanocide three in weed killer herbicide are 1 ~ 85%, and preferred mass percentage composition is 15 ~ 80%, and most preferably mass percentage is 25 ~ 70%.

In the ternary built preparation of flazasulfuron of the present invention, butachlor and trefanocide, except the active ingredients such as flazasulfuron, butachlor and trefanocide, the auxiliary agents such as conventional surfactants, thickener, solvent or the solid packing that pesticidal preparations allows can also be added and excipient becomes any one formulation that agricultural chemicals allows.Preferably be processed into suspending agent, wetting powder, water dispersion granule, missible oil, microcapsule formulations.

The present invention can be applicable to before the bud of lawn and weeding after early stage bud, is particularly applied in various grass family, sedge family and broad leaved weed in Weeds in Turf, Be very effective.

Herbicidal composition of the present invention has the following advantages:

1, Synergistic, activity of weeding are high.Flazasulfuron absorbs mainly through root and stem and is sent to meristematic tissue by conducting tissue, suppresses the biosynthesis of branched-chain amino acid (as serine, isoleucine).Butachlor is the growth of T suppression cell by the obstruction synthesis of protein mainly.Trefanocide mainly suppresses microtubule system, passes in soil layer process absorbed by weed seed at germinating growth.That is, herbicidal composition of the present invention can kill weeds by three kinds of different approaches, produces higher synergistic function, greatly can improve the removing activity of weed killer herbicide.

2, herbicidal spectrum is wide, and the lasting period is long.Flazasulfuron mainly prevents and treats annual broad-leaved and grassy weed, and butachlor is broad spectrum weeding agent, mainly prevents and treats grass family, sedge family and some annual broadleaf weeds.Flazasulfuron and butachlor all have activity of weeding before certain bud, and especially butachlor has special efficacy to grassy weed before bud, and trefanocide is processing soil treatment agent before selectivity bud, suppress microtubule system.Mainly prevent and kill off the broad leaved weed of grassy weed and part small-sized seed.So weed killer herbicide of the present invention has the double action in leaf surface treatment and feud, extend the lasting period of medicament.After three's mixing, action compensating, herbicidal spectrum is wider.

3, Weed Resistance is delayed.Because weeds easily produce resistance to sulfonylurea herbicide, and containing butachlor and trefanocide in weed killer herbicide of the present invention, enable the medicament anti-weeds except anti-sulfonylurea effectively, in addition, reduce resistance weed, extend the service life of medicament.

4, safety is high.Herbicidal composition of the present invention, is applied to Kill weeds, and it can various grass family, sedge family and broad leaved weed in Weeds in Turf, under the prerequisite that improve drug effect, has very high safety to lawn.

Therefore, mixed herbicide of the present invention can be applied in the weed killer herbicide preparing Kill weeds, particularly applies in various grass family, sedge family and broad leaved weed in Weeds in Turf.

Specific embodiments

Embodiment 1

Flazasulfuron 1%, butachlor 10%, trefanocide 14%, alkylphenol polyoxyethylene 4%, the rare block compound 5% of polyoxyethylene polyoxy third, thickener 2%, vegetable oil to 100%, formulation method is conveniently mixed with the oil-suspending agent that mass percentage is 25%.

Embodiment 2

Flazasulfuron 2%, butachlor 15%, trefanocide 23%, NN0 (di-2-ethylhexylphosphine oxide bitter edible plant sodium sulfonate) 9%, calcium dodecyl benzene sulfonate 5%, sodium lignin sulfonate to 100%, formulation method is conveniently mixed with the missible oil that mass percentage is 40%.

Embodiment 3

Flazasulfuron 5%, butachlor 5%, trefanocide 60%, sodium lignin sulfonate 7%, neopelex 5%, ammonium sulfate 5%, diatomite supplies 100%, and formulation method is conveniently mixed with the water dispersion granule that mass percentage is 70%.

Embodiment 4

Flazasulfuron 3%, butachlor 20%, trefanocide 47%, NNO (di-2-ethylhexylphosphine oxide bitter edible plant sodium sulfonate) 6%, sodium lignin sulfonate 5%, white carbon 9%, kaolin supplies 100%, and formulation method is conveniently mixed with the wetting powder that mass percentage is 70%.

Embodiment 5

Flazasulfuron 70%, butachlor 1%, trefanocide 4%, NNO (di-2-ethylhexylphosphine oxide bitter edible plant sodium sulfonate) 6%, sodium lignin sulfonate 4%, white carbon 5%, kaolin supplies 100%, and formulation method is conveniently mixed with the wetting powder that mass percentage is 75%.

Embodiment 6

Flazasulfuron 4%, butachlor 60%, trefanocide 1%, NN O (di-2-ethylhexylphosphine oxide bitter edible plant sodium sulfonate) 9%, alkylphenol polyoxyethylene 5%, sodium lignin sulfonate to 100%, formulation method is conveniently mixed with the dry outstanding agent that mass percentage is 65%.

Embodiment 7

1), toxicity determination test

Utilize the preparation in embodiment 1 ~ 4, measure its co-toxicity coefficient to lawn common weed barnyard grass.

Test method: be seeded in respectively in the Disposable paper cup of 9cm by the seed of quantitative barnyard grass, sows 10 ~ 15 seeds in every glass, cultivates in illumination box, when barnyard grass 3 ~ 6 leaf phase, does composition spray to carry out spraying process in crawler type.Continue in greenhouse after process to cultivate, routine observation respectively processes the preventive effect to weeds, weighs the weeds fresh weight after each process after 30d, and the method proposed by nineteen sixties such as Sun Yunpei, calculates its toxicity regression curve and co-toxicity coefficient.Co-toxicity coefficient is greater than 120, and show that three kinds of active principles have synergy, co-toxicity coefficient is greater than 100, and show that three kinds of active principles have synergistic effect, co-toxicity coefficient is less than 100, shows that three kinds of active principles have antagonism.Measurement result is as shown in table 1.

Table 1 toxicity measurement result

As can be seen from the above table, the co-toxicity coefficient after three kinds of active principles are composite is all greater than 120, illustrates that the present invention has significantly synergy and synergistic effect.

2), field control effectiveness test

Reagent agent:

4 kinds of ternary built weed killer herbicides in embodiment 1 ~ 4.

Contrast medicament:

25% flazasulfuron water dispersible granules (commercially available), 60% butachlor ec (commercially available), 48% trifluralin ec (commercially available).For examination lawn: Bermuda grass

Bermuda grass seedling was 3 ~ 5 leaf phases, grew fine, robust plant, without other damage by disease and insect.

Prevent and kill off object:

The lawn advantage weeds such as barnyard grass, lady's-grass, difformed galingale herb, eleusine indica, annual bluegrass, amur foxtail, green foxtail, alternanthera philoxeroides, pale persicaria, sheep hoof, class humid euphorbia, greater plantain, argy wormwood, sweet vernal grass, shepherd's purse, chickweed, cyperus iria, Monochoria vaginalis, water three-coloured amaranth, black nightshade, common sow thistle, mexicana, moleplant seed.

Test method:

According to the area of experimental plot, the good various medicament of precise, and after being watered dilution, utilize knapsack sprayer, carry out even spraying, the Fan spray head that sprinkler selection weed killer herbicide is special.During spraying, liquid be noted evenly to spray application in experimental plot, accomplish the phenomenon not having drain spray, many sprays.

After test, after medicine, 20d, 40d observe weeds death condition respectively, and the activity of weeding of more various medicament.In addition, after medicine, the growing state on lawn also in 1 ~ 15d, to be observed, whether have poisoning to investigate medicament to lawn.

Embodiments of the invention preparation Herbicidal Testing Trials effect sees the following form 2 (after medicine 20d) and table 3 (after medicine 40d)

Table 2 field control effectiveness test result (after medicine 20d)

Table 3 field control effectiveness test result (after medicine 40d)

As can be seen from table 2 and table 3, the present invention has significant preventive effect to grassy weed, sedge weed and broad leaved weed, significantly building performance, and the lasting period is long.

Table 4 medicament is to the security survey result on lawn

Growing fine in lawn in each process community, has no any medicine spot, illustrates that various medicament is all safe to lawn.

Claims (10)

1. the mixed herbicide containing flazasulfuron, butachlor and trefanocide, it is characterized in that this weed killer herbicide with flazasulfuron, butachlor and trefanocide for principle active component, the mass ratio of flazasulfuron, butachlor and trefanocide is 0.1 ~ 80:0.1 ~ 80:0.1 ~ 80.

2. the mixed herbicide containing flazasulfuron, butachlor and trefanocide according to claim 1, is characterized in that the mass ratio of flazasulfuron, butachlor and trefanocide in this weed killer herbicide is 1 ~ 5:1 ~ 20:1 ~ 60.

3. the mixed herbicide containing flazasulfuron, butachlor and trefanocide according to claim 2, is characterized in that the mass ratio of flazasulfuron, butachlor and trefanocide in this weed killer herbicide is 1 ~ 5:5 ~ 20:10 ~ 50.

4. the mixed herbicide containing flazasulfuron, butachlor and trefanocide according to claim 2, is characterized in that the mass ratio of flazasulfuron, butachlor and trefanocide in this weed killer herbicide is 1:10:14 or 2:15:23 or 5:5:60 or 3:20:47.

5. the mixed herbicide containing flazasulfuron, butachlor and trefanocide according to any one of Claims 1 to 4, is characterized in that flazasulfuron, butachlor and the mass percentage of trefanocide three in weed killer herbicide are 1 ~ 85%.

6., according to the mixed herbicide containing flazasulfuron, butachlor and trefanocide described in claim 5, it is characterized in that flazasulfuron, butachlor and the mass percentage of trefanocide three in weed killer herbicide are 25 ~ 70%.

7. according to any one of Claims 1 to 4 containing the mixed herbicide of flazasulfuron, butachlor and trefanocide, it is characterized in that this weed killer herbicide becomes any one formulation with flazasulfuron, butachlor and trefanocide for auxiliary agent that principle active component and agricultural chemicals allow and excipient.

8., according to the mixed herbicide containing flazasulfuron, butachlor and trefanocide described in claim 7, it is characterized in that described formulation is suspending agent, missible oil, water dispersion granule, wetting powder, dry outstanding agent.

9. the application of the mixed herbicide containing flazasulfuron, butachlor and trefanocide according to any one of Claims 1 to 4 before the bud of lawn and after early stage bud in weeding.

10. the application of mixed herbicide in Weeds in Turf in various grass family, sedge family and broad leaved weed containing flazasulfuron, butachlor and trefanocide according to any one of Claims 1 to 4.