CN105766971B - Mixed herbicide and application thereof containing flazasulfuron, Pendimethalin and Flumetsulam - Google Patents

Abstract

The invention discloses a kind of mixed herbicide and application thereof containing flazasulfuron, Pendimethalin and Flumetsulam, for the herbicide using flazasulfuron, Pendimethalin and Flumetsulam as principle active component, the mass ratio of flazasulfuron, Pendimethalin and Flumetsulam is 0.1~80：0.1~80：0.1~80.Application of the mixed herbicide of the present invention in Kill weeds, the application especially in Weeds in Turf in various grass family, Cyperaceae and broad leaved weed have remarkable result.Herbicide of the present invention under the premise of improving drug effect, delays Weed Resistance compared to single agent, and herbicidal spectrum is wide, and the lasting period is long, and has safety to lawn.

Description

Mixed herbicide containing flazasulfuron, Pendimethalin and Flumetsulam and its Purposes

Technical field

The invention belongs to technical field of pesticide, are related to a kind of herbicide, and in particular to a kind of flazasulfuron, Pendimethalin Mix compounding agent with the ternary of Flumetsulam, the herbicidal composition can be applied to lawn seedling before, postemergence weed control.

Background technology

With increasing substantially for the quickening of Urbanization in China, the promotion of urban afforestation standard and urban size, respectively Kind lawn is come into being, and has caused the great demand to lawn, Development of Turf has good business opportunity.Ensureing highway, iron The infrastructure such as road, airport, reservoir, riverbank, Hu Di are firm, aesthetic, and lawn is important auxiliary equipment；It is built in city If, in terms of afforestation, " tropical island effect " that lawn can substantially improve living environment, effectively reduce city.Green grassland Area, quality reflect The Surroundings in Cities quality and civilization degree.The city in some developed countries such as U.S., European Union is even more grass Level ground industry is as one of national pillar industry.Currently, the Lawn Industry in China has large development, but not yet form complete integration Industrial system.Lawn plays important in the spiritual civilization level of China's urban construction, living environment beautification and the raising people Role, it not only has very high economic benefit, but also has huge ecological benefits and social benefit.

However, since management is improper, there is quality decline in many lawns, and turfgrass is dead, weedy, pest and disease damage The problems such as occur again and again, the serious use value and landscape value for reducing lawn causes a large amount of fund to waste, so research grass Level ground administrative skill, especially Kill weeds technology are the important measures for changing lawn present situation and improving ecological environment.

Artificial weeding, throwing work is big, weeding is not thorough, and has the disadvantage for trampleing on lawn, to reduce turf quality.Some places It must not be changed without lawn, it is costly.Chemical weed control saving of work and time, low-cost high-efficiency, later stage weeds occurrence quantity is few, this is people Work uprooting weed cannot than.And chemical weed control also has sealing process, and the weeds newly gone out later want much less.Chemical weed control is to grass Level ground interference is few, and rational environment is provided for Turfgrass Growth.Weeding expense is low, and expense is the l/3-l/4 of labour cost, and one The expense in year is the 1/4-1/5 of labour cost.Labor intensity is low, and a people can spray 7-9 mus of lawns, machine spraying effect daily Rate higher has large area weeding advantage.In order to reduce the economic loss caused by crop smothering, reduce labor intensity, at the same also because For chemical weed control is convenient, quick-acting, control time is long, chemical weed control is gradually received by people.

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

Acetolactate synthestase (ALS) inhibitor.It is main to inhibit to generate side chain amino acid, leucine, isoleucine and figured silk fabrics The reaction of the predecessor acetolactate synthestase of propylhomoserin.The medicament broad weed-killing spectrum, it is annual in Weeds in Turf that can not only be fabulous Broad-leaved and grassy weed, and perennial broadleaf weed and sedge weed can also be prevented and kill off, such as lady's-grass, barnyard grass, eleusine indica, morning Ripe standing grain, amur foxtail, green bristlegrass, the rhizome of nutgrass flatsedge, kyllinga brevifolia, cyperus iria, difformed galingale herb, alternanthera philoxeroides, Horseweed Herb, white axle Grass, day recklessly appropriate, Tufted Cerastium, creeping oxalis, hairy tare, pale reddish brown mesh place, clover, pale persicaria, sheep hoof, euphorbia maculata, greater plantain, Argy wormwood, sweet vernal grass, green amaranth, shepherd's purse, benbie, common vetch, chickweed etc., it is splendid to kyllinga brevifolia, lady's-grass and rhizome of nutgrass flatsedge preventive effect.

Under normal circumstances, weeds stop growing immediately after processing, the leaf chlorisis that newly sends out after absorbing 4-5 days, then by Gradually necrosis and to spread to 20-30 days weeds of entire plant thoroughly withered.The medicament can be absorbed by weeds cauline leaf, and can inhibit soil Suppressing weed seed germination in earth, control time is longer, and the lasting period is about 40 days or more in spring and summer, and autumn and winter is 120 days or more.

Flazasulfuron is that first, China formal registration is special on warm-season turf (Korea lawn grass class and Bermuda grass class) Herbicide.Medicament can be decomposed rapidly after Korea lawn grass and Bermuda grass class turfgrass contact medicament, be converted into innocuous substance, Bu Huiying The normal growth on lawn is rung, it is safe to turfgrass.It is used in lawn rest period, does not interfere with germination and growth in the future. It is widely used in greening lawn, golf course etc..

Pendimethalin (pendimethalin), trade name weeding is logical, is that the phenyl amines developed by BASF Corp removes Careless agent.Chemical name：N-1- (ethyl propyl) 2,6- dinitro -3,4- dimethylanilines.Its structural formula is as follows：

Pendimethalin is meristem cell division inhibitor, mainly inhibits meristem cell division, is not influenced miscellaneous The sprouting of grass seed, but young shoot, stem and root work after absorbing medicament during suppressing weed seed germination.Dicotyledon Absorption site is hypocotyl, and monocotyledon is young shoot, and damage symptoms are that young shoot and secondary root are suppressed, and are eventually led to dead It dies.Mainly prevent and kill off annual gramineae and certain annual broadleaf weeds.Such as：Lady's-grass, eleusine indica, barnyard grass, annual bluegrass, multitude, horse Bitterroot, Amaranthus retroflexus, Asiatic plantain, sowthistle, amur foxtail, clearvers, green bristlegrass, volume stem smartweed, chickweed, summer cypress, nutgrass flatsedge, benbie, Difformed galingale herb etc..

Flumetsulam (Flumetsulam) is the triazole developed by road agricultural sciences (Dow Agroscience) company And pyrimidine sulfonyl amine herbicide.Chemical name：2', 6'- bis- fluoro- 5- methyl (1,2,4)-triazol (1,5-a) pyrimidine -2- sulphurs Its structural representation of anilide is as follows：

Flumetsulam is typical inhibitor of acetolactate synthetase.By inhibiting the synthesis of branched-chain amino acid to make albumen Matter biosynthesis block, plant stop growing, final dead.Flumetsulam has very strong uptake and translocation, from plant absorption medicine Agent start to occur damage symptoms, until Plant death be a slow process of comparison.Weeds absorb medicament after symptom be： Blade middle arteries chlorosis, vein and blade tip fade, by lobus cardiacus yellowish-whiteization, purpleization, internode shorten, terminal bud death, final complete stool It is dead.

Flumetsulam is a kind of broad spectrum weeding agent.Longevity of residure length, broad weed-killing spectrum, soil, cauline leaf process.It can be anti- Except most of annual and perennial broadleaf weed, also have an inhibiting effect to young age grassy weed, such as to piemarker, lamb's-quarters, chickweed, The preventive effects such as tattooing harvests, clearvers, Mandala, Amaranthus retroflexus, pineapple weed, corn radish are excellent, to knotweed, summer cypress, black nightshade, white dead nettle, grandmother It receives, a variety of cruciferous weeds such as flowerofanhour root or herb, Siberian cocklebur and elegance and talent dish, penny cress also have significant preventive effect, to green bristlegrass, iron Water chestnut has good activity.

Lawn herbicide is limited by safety at present, and herbicide controlling spectrum is also limited, and a kind of herbicide single dose is used alone cannot be complete The full generation for efficiently controlling turf weed, furthermore some herbicides are since the water-soluble big or field lasting period is too long, dosage mistake It is big or dispenser is uneven all be easy to cause residual hazard.Therefore, the present invention selects herbicide controlling spectrum different, the phonetic sulphur of pyridine of advantage and disadvantage complementation It is made into mixture use after three kinds of herbicides of grand, Pendimethalin and Flumetsulam suitably decrement, both expands herbicide controlling spectrum in this way, Herbicidal effect is significantly improved, the possibility for generating poisoning and residual hazard to lawn is also avoided.

Invention content

The object of the present invention is to provide a kind of mixed herbicides containing flazasulfuron, Pendimethalin and Flumetsulam.

It is a further object of the present invention to provide application of the herbicide before the seedling of lawn and/or in postemergence weed control.

A kind of mixed herbicide containing flazasulfuron, Pendimethalin and Flumetsulam, it is characterised in that the herbicide Using flazasulfuron, Pendimethalin and Flumetsulam as principle active component, flazasulfuron, Pendimethalin and flumetsulam The mass ratio of amine is 0.1~80：0.1~80：0.1~80.It is preferred that the quality of flazasulfuron, Pendimethalin and Flumetsulam Than being 1~70：1~60：1~60, the mass ratio of further preferred flazasulfuron, Pendimethalin and Flumetsulam is 1~ 5：1~60：1~25, the most preferably mass ratio of flazasulfuron, Pendimethalin and Flumetsulam is 1：1：18、3：2：25、5： 4：1 or 3：60：2.

In mixed herbicide, the quality hundred of flazasulfuron, Pendimethalin and Flumetsulam three in herbicide It is 1~85% to divide content, and preferred mass percentage composition is 10~80%, and most preferably mass percentage is 10~65%.

In the flazasulfuron of the present invention, the ternary built preparation of Pendimethalin and Flumetsulam, in addition to flazasulfuron, Outside the active ingredients such as Pendimethalin and Flumetsulam, can also add the conventional surfactants allowed on pesticidal preparations, The auxiliary agents such as thickener, solvent or solid packing are configured to any one dosage form allowed on pesticide.It is preferred that be processed into suspending agent, can Wet powder, water dispersion granule, missible oil, microcapsule formulations.

Mixed herbicide of the present invention can be applied before the seedling of lawn, in postemergence weed control, especially in Weeds in Turf Using with remarkable result in various grass family, Cyperaceae and broad leaved weed.

The herbicidal composition of the present invention has the following advantages：

1, activity of weeding is high.Flazasulfuron and Flumetsulam are all inhibitor of acetolactate synthetase.Mainly pass through root Portion and stem absorb is transmitted to separate living tissue by conducting tissue, inhibits the biology of branched-chain amino acid (such as serine, isoleucine) Synthesis.Pendimethalin is main inhibition meristem cell division, does not influence the sprouting of weed seed, but in weed seed Young shoot, stem and root work after absorbing medicament in germination process.That is, the herbicidal composition of the present invention can pass through Three kinds of different approaches kill weeds, can greatly improve the removing activity of herbicide.

2, herbicidal spectrum is wide, and the lasting period is long.After flazasulfuron, Pendimethalin are mixed with Flumetsulam three, effect is mutual It mends, herbicidal spectrum is wider, and flazasulfuron is mainly effective to broad leaved weed and sedge weed, and can spread pesticide-clay mixture or spraying；Diformazan Penta pleasure spirit except to certain broad leaved weeds effectively in addition to, also have good effect to grassy weed, and before seedling, Miao Houjun can make With.And Flumetsulam can prevent and kill off most of annual and perennial broadleaf weed, also have inhibition to make young age grassy weed With soil, cauline leaf process.So the herbicide of the present invention has the double action in foliar treatment and feud, medicament is extended Lasting period.

3, delay Weed Resistance.Since weeds easily generate resistance to sulfonylurea herbicide, and in the herbicide of the present invention Pendimethalin containing dinitroaniline and triazolopyrimidine sulfonamides herbicide Flumetsulam, enable medicament to have Prevent that the weeds in addition to anti-sulfonylurea extend the service life of medicament in addition, reducing resistance weed in effect ground.

4, safe.The herbicidal composition of the present invention is applied to Kill weeds, being capable of various standing grain in Weeds in Turf Undergraduate course, Cyperaceae and broad leaved weed have safety under the premise of improving drug effect to lawn.

Therefore, mixed herbicide of the present invention can be applied in the herbicide for preparing Kill weeds, especially make It is applied in the herbicide of various grass family, Cyperaceae and broad leaved weed in standby Weeds in Turf.

Specific implementation mode

Embodiment 1

Flazasulfuron 1%, Pendimethalin 1%, Flumetsulam 18%, alkyl phenol polyoxyethylene ether 4%, polyoxyethylene Polyoxy propylene block compound 5%, thickener 2%, vegetable oil adds to 100%, and quality is configured to according to conventional formulation method The suspending agent that percentage composition is 20%.

Embodiment 2

Flazasulfuron 3%, Pendimethalin 2%, Flumetsulam 25%, NNO (di-2-ethylhexylphosphine oxide bitter edible plant sodium sulfonate) 9%, alkane Base phenol polyethenoxy ether 5%, sodium lignin sulfonate adds to 100%, and mass percentage is configured to according to conventional formulation method For 30% suspending agent.

Embodiment 3

Flazasulfuron 5%, Pendimethalin 4%, Flumetsulam 1%, sodium lignin sulfonate 7%, detergent alkylate sulphur Sour sodium 5%, ammonium sulfate 5%, diatomite complements to 100%, and being configured to mass percentage according to conventional formulation method is 10% water dispersion granule.

Embodiment 4

Flazasulfuron 3%, Pendimethalin 60%, Flumetsulam 2%, NNO (di-2-ethylhexylphosphine oxide bitter edible plant sodium sulfonate) 6%, wood Quality sodium sulfonate 5%, white carbon 9%, kaolin complements to 100%, and being configured to quality percentage according to conventional formulation method contains The wettable powder that amount is 65%.

Embodiment 5

Flazasulfuron 70%, Pendimethalin 5%, Flumetsulam 5%, NNO (di-2-ethylhexylphosphine oxide bitter edible plant sodium sulfonate) 5%, wood Quality sodium sulfonate 4%, white carbon 5%, kaolin complements to 100%, and being configured to quality percentage according to conventional formulation method contains The wettable powder that amount is 80%.

Embodiment 6

Flazasulfuron 10%, Pendimethalin 10%, Flumetsulam 60%, NN O (di-2-ethylhexylphosphine oxide bitter edible plant sodium sulfonate) 9%, Alkyl phenol polyoxyethylene ether 5%, sodium lignin sulfonate adds to 100%, and being configured to quality percentage according to conventional formulation method contains The missible oil that amount is 80%.

Embodiment 7

1), toxicity determination test

Using the preparation in Examples 1 to 4, its co-toxicity coefficient to lawn common weed chickweed is measured.

Test method：The seed of quantitative chickweed is seeded in the disposable paper cup of 9cm respectively, in every glass sow 10~ 15 seeds, are cultivated in illumination box, when 3~6 leaf phase of chickweed, are carried out at spraying in crawler crop spray Reason.Continue to cultivate in greenhouse after processing, respectively processing weighs that each that treated is miscellaneous to the preventive effects of weeds to routine observation after 30d Careless fresh weight calculates its toxicity regression curve and co-toxicity coefficient by the method that the nineteen sixties such as Sun Yunpei propose.Co-toxicity coefficient is more than 120, show that there is three kinds of active principles synergistic effect, co-toxicity coefficient to be less than 120, shows that three kinds of active principles are made with antagonism With.Measurement result is as shown in table 1.

1 toxicity measurement result of table

As can be seen from the above table, the co-toxicity coefficient after three kinds of active principle compoundings is both greater than 120, and it is bright to illustrate that the present invention has Aobvious synergistic effect.

2), field control effectiveness test

Reagent agent：

4 kinds of ternary built herbicides in Examples 1 to 4.

Comparison medicament：

25% flazasulfuron water dispersible granules (commercially available), 30% Pendimethalin suspending agent (commercially available), 80% flumetsulam Aqueous amine dispersible granule (commercially available).

For trying lawn：Bermuda grass

Bermuda grass was 3~5 leaf phases, was grown fine, robust plant, without other pest and disease damages.

Control object：

The lawns such as rhizoma alismatis, nutgrass flatsedge, apple, bog pondweed, arrowhead, difformed galingale herb, chickweed, lady's-grass, green bristlegrass, barnyard grass, eleusine indica Gesture weeds.

Test method：

According to the area of experimental plot, good various medicaments of precise, and after being watered dilution, using knapsack sprayer, Carry out even spraying, the dedicated Fan spray head of sprinkler selection herbicide.When spraying, it should be noted that it is small that liquid is uniformly sprayed application to experiment Qu Zhong accomplishes no drain spray, the phenomenon that spraying more.

20d, 40d observe weeds death condition, and the activity of weeding of more various medicaments after medicine respectively after experiment.This Outside, the growing state that also observe lawn in 1~15d after medicine, to investigate whether medicament has poisoning to lawn.

The embodiment of the present invention preparation Herbicidal Testing Trials effect see the table below 2 (20d after medicine) and table 3 (40d after medicine)

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

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

The present invention be can be seen that from table 2 and table 3 to grassy weed, sedge weed and broad leaved weed all with aobvious The preventive effect of work, it is building performance notable, and also the lasting period is long.

Security survey result of 4 medicament of table to lawn

Lawn in each processing cell is grown fine, and is had no any medicine spot, is illustrated that various medicaments are safe to lawn.

Claims (8)

1. a kind of mixed herbicide containing flazasulfuron, Pendimethalin and Flumetsulam, it is characterised in that the herbicide with Flazasulfuron, Pendimethalin and Flumetsulam be active ingredient, flazasulfuron, Pendimethalin and Flumetsulam matter Amount is than being 1：1：18、3：2：25、5：4：1、3：60：2.

2. mixed herbicide according to claim 1, it is characterised in that flazasulfuron, Pendimethalin and Flumetsulam Mass percentage of the three in herbicide is 1~85%.

3. according to the mixed herbicide described in claim 2, it is characterised in that flazasulfuron, Pendimethalin and flumetsulam Mass percentage of the amine three in herbicide is 10~80%.

4. according to the mixed herbicide described in claim 1, it is characterised in that flazasulfuron, Pendimethalin and flumetsulam Mass percentage of the amine three in herbicide is 10~65%.

5. mixed herbicide according to claim 1, it is characterised in that it is with flazasulfuron, Pendimethalin and the phonetic sulphur of azoles Careless amine is that the auxiliary agent allowed on principle active component and pesticide is configured to any one dosage form.

6. mixed herbicide according to claim 5, it is characterised in that the dosage form be suspending agent, wettable powder, Water dispersible granules, missible oil.

7. application of the mixed herbicide described in claim 1 before the seedling of lawn and/or in postemergence weed control.

8. mixed herbicide described in claim 1 answering in various grass family, Cyperaceae and broad leaved weed in Weeds in Turf With.