CN105660670A - Weed killer composition containing methabenzthiazuron and carfentrazone - Google Patents
Weed killer composition containing methabenzthiazuron and carfentrazone Download PDFInfo
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- CN105660670A CN105660670A CN201610145995.XA CN201610145995A CN105660670A CN 105660670 A CN105660670 A CN 105660670A CN 201610145995 A CN201610145995 A CN 201610145995A CN 105660670 A CN105660670 A CN 105660670A
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- methabenzthiazuron
- azoles grass
- ketone
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N47/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid
- A01N47/08—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid the carbon atom having one or more single bonds to nitrogen atoms
- A01N47/28—Ureas or thioureas containing the groups >N—CO—N< or >N—CS—N<
- A01N47/36—Ureas or thioureas containing the groups >N—CO—N< or >N—CS—N< containing the group >N—CO—N< directly attached to at least one heterocyclic ring; Thio analogues thereof
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/64—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with three nitrogen atoms as the only ring hetero atoms
- A01N43/647—Triazoles; Hydrogenated triazoles
- A01N43/653—1,2,4-Triazoles; Hydrogenated 1,2,4-triazoles
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Abstract
The invention belongs to the technical field of pesticide weed killers and particularly relates to a weed killer composition containing methabenzthiazuron and carfentrazone. The weed killer composition is suitable for wheat fields. The weight ratio of the effective component methabenzthiazuron to the effective component carfentrazone ranges from 12.5:1 to 800:1. A weeding spectrum is widened, the prevention effect is enhanced, the situation that weed resistance rapidly occurs when a single weed killer is used for prevention and removal is avoided, weed pesticide resistance is delayed, the pesticide use amount is reduced, use cost is reduced, and environmental pollution is relieved.
Description
Technical field
The invention belongs to pesticide herbicide technical field, it is specifically related to be applicable to a kind of containing the herbicidal composition of methabenzthiazuron and azoles grass ketone of wheatland.
Background technology
Wheat is one of China's main grain food crop, its cultivated area and ultimate production are only second to paddy rice, whole nation cultivated area reaches more than 3,000 ten thousand hectares, about 4.5 hundred million mu, account for the 22%-30% of whole nation cultivated area, it is about the 20%-27% of food crop sown area, wheat ultimate production about 100,000,000 tons, reach the 22%(Wu Ming honor etc. of total output of grain, 2013, agricultural chemicals). Wheat is the main commodity food of China and strategic reserves grain kind, has critical role in grain-production, circulation and consumption, and development Wheat Production is significant to Chinese national economy development and people's lives. According to whole nation weeds reconnaissance information, China's wheat weeds kind has kind more than 200, and grass evil area accounts for more than the 30% of wheat planting area, and loss accounts for the 15% of wheat ultimate production. Therefore wheat weeds control is one of important process of wheat planting.
Weedicide is the conventional measure of current wheat weeds control, and promotion wheat yield raising and saving planting cost are had important effect. But long-term, the large scale application of weedicide, farmland weed chemistry is prevented and kill off to be existed weeds resistance, population succession and drug injury problem and is on the rise, the serious safety (Wei Youhai, hubei agricultural science, 2011.4) got bumper crops with good harvest and succession crop affecting wheat. At present, in wheatland there are some drawbacks in conventional medicament. As succession crop peanut, soybean can be caused poisoning by sulfonylurea herbicide tribenuron-methyl, the too high and excessively late use of benbbensulfuronmethyl consumption. Phenoxy carboxylic acid herbicides 2,4-d butyl ester, mcpa sodium consumption too high and use improper easily cause chemical injury of crops produce drift can to neighbouring dicotyledonous crops produce poisoning.
Life-time service single herbicide is prevented and kill off and susceptible weeds quantity can be caused to decline, and insensitive or malignant weed quantity rises, and causes weed community to change. In the winter wheat producing region of the single use of weedicide, weed community in wheat field there occurs serious change, and the malignant weed that the multiple weedicide such as Tender Catchweed Bedstraw Herb, wartwort, grandmother's sodium, shepherd's purse is all difficult to control increases year by year, and seriously have impact on the results of wheat crop output.
Azoles grass ketone, other Chinese be good fortune agriculture, soon go out spirit, triazolone grass ester, carfentrazone. It is by the triazolineone weedicide of rich U.S. real (FMC) company of U.S. exploitation.CA registration number is 128639-02-1, and chemical classes is azole, and chemical name is the chloro-3-of (RS)-2-[2-chloro-5-(4-difluoromethyl-4,5-two hydrogen-3-methyl-5-oxygen-1H-1,2,3 ,-triazol-1-yl)-3-fluorophenyl] ethyl propionate. Molecular formula is C15H14Cl2F3N3O3. Azoles grass ketone is a kind of contact killing type selective herbicide, when there being light, in chlcrophyll biosynthesis process, by suppressing proporphyrinogen oxidase to cause the accumulation of poisonous intermediate, thus destroys the cytolemma of weeds, makes blade withered, dead rapidly. Namely azoles grass ketone absorbed by plant leaf in 15 minutes after spray medicine, and it is not drenched with rain affects, and after 34 hours, toxicity symptom just occur in weeds, and 24 days dead. Cereal crop uses, for foliar treatment after seedling, makes that the conduction of responsive broadleaf weeds is obstructed and very quick-drying is withered dies, to wheat, the weeds developed immunity to drugs in life-time service sulfourea weedicide area are had special efficacy, to succession crop safety by the cereal crop safety such as corn. Be mainly used in preventing and kill off broadleaf weeds and nutgrass flatsedge as Tender Catchweed Bedstraw Herb, Herba lamii barbati, veronica, piemarker, flat storage, lamb's-quarters, red heart lamb's-quarters, empty pipe lead a cow, weasel lobe flower, pale persicaria (liao), willow leaf thorn knotweed, volume stem knotweed, Amaranthus retroflexus, Herba Acalyphae, the weeds such as treasured leaf mustard, Herba Sonchi Arvensis (qumqi), Herba lamii barbati, fruitlet flax, summer cypress, black nightshade, sinapsis alba. The weeds such as Tender Catchweed Bedstraw Herb, piemarker, red heart lamb's-quarters, shepherd's purse, wartwort, corn gromwell, empty pipe are led a cow have excellent imitation, and the weeds etc. that sulfonylurea herbicide produces resistance have good activity. Azoles grass ketone (being generally March November to next year) before wheat tri-leaf period to jointing all can use, if but dispenser is improper, and wheat seeding blade can produce after dispenser yellow and burn spot, dosage is big, Drug level height, then spot of burning is big, and poisoning is obvious. Circumference report, azoles grass ketone uses improper wheat, and to be subject to poisoning (" pesticide market information ", 2012.10) be that dosage is too high. Just easily there is poisoning when the azoles grass pure dosage of ketone every mu is more than 1.5 grams, increase the weight of along with dosage increases poisoning. Two is that dosage is improper. Making up a prescription not according to secondary dilution method, medicine can not evenly spread in water, and it is too much that dispenser rear section wheat leaf medicine, easily produces poisoning. Three is mixed improper. Preparation and the organosilicon auxiliary agents etc. such as azoles grass ketone preparation and 6.9% fenoxapropPethyl missible oil are mixed, it is possible to affect careless ketone being uniformly distributed in water of azoles, generation poisoning. The mixed improper poisoning caused happened occasionally in recent years. Four is that spraying medicine concentration is too high. When within 2009, wheatland is eliminated spring, the ground such as Huang gang is riverine have the wheat of larger area to be subject to poisoning in various degree after using azoles grass ketone preparation and the mixed agent of wheat pole, and the lighter's wheat leaf turns to be yellow, medicine spot occurs; Severe one wheat leaf is withered, and it is dead due to blade major injury that part is in the wheat seeding of 1-2 leaf phase.
Methabenzthiazuron, Chinese synonym is: methabenzthiazuron, and the winter is broadcast grand, and section rather broadcasts, first benzthiazuron, methabenzthiazuron, N-2-benzothiazolyl-N, N'-dimethyl urea; N-2-benzothiazolyl-N, N '-dimethyl urea; 1-(benzothiazole-2-base)-1,3-dimethyl urea. English name is Methabenzthiazuron, and English synonym is: s25128, B-74283, bay74283, TRIBUNIL, Trubunil, BAY-5653, bayer5633, TRIBUNIL (R), preparation5633, methbenzthiazuron.CBNumber is CB9197088, and No. CAS is 18691-97-9. Methabenzthiazuron is the broad-spectrum herbicide of the weeds prevented and kill off in wheat class, beans before a kind of bud, after bud, many unifacial leaves, broadleaf weed is all had and good prevents and kill off effect. Mainly through root absorption, 14-20d is interior dead after administration for weeds. Phenyl ureagroup herbicides, by suppressing the Hill reaction in plant photosynthesis crop, reach weeding object. Cornfield herbicidal dosage 15～22.5g/100m2. Owing to medicament is mainly through root absorption, so soil should be moistening during dispenser. The weeds bred by root system are invalid. Succession crop is safer. Spring barley should not be applied to. Usually being harmful to a little by water body, undiluted or a large amount of product is not contacted underground water, water channel or sink drainage, do not enter surrounding environment by material without governmental approval.
Along with the development of Development of China's Urbanization, rural laborer transfers to cities and towns in a large number, and concentration of landholdings degree improves, and wheat weeds control is more and more stronger to the dependency of weedicide. Efficiently, low poison, low residue, succession crop endanger the little important directions being current weedicide and researching and developing.
In order to make up the deficiency that above each single dose exists in actual application, the present inventor furthers investigate, unexpected discovery in the screening of a large amount of formula indoors with the basis of field control effectiveness test, the herbicidal composition of the present invention is composite in certain ratio range, weeds of wheat is had excellent prevention effect, the anti-effect shown and activity level exceed the superposition of each component, there is unexpected synergistic function, solve above two weedicides to compose in herbicide, the limitation existed in anti-effect and security, reach and expand herbicide spectrum, improve anti-effect, improve the object of security, current agricultural can be met to the demand of weedicide.
Summary of the invention
It is an object of the invention to the defect for current wheat field herbicide, it is provided that a kind of broad weed-killing spectrum, herbicidal effect are good, use safety, are conducive to the herbicidal composition of the weeds of wheat comprehensive regulation.
Present invention employs following technical scheme:
The present invention relates to a kind of containing the herbicidal composition of methabenzthiazuron and azoles grass ketone.
Technical solution of the present invention, it is characterised in that: the part by weight scope of effective constituent methabenzthiazuron and azoles grass ketone is 12.5:1 to 800:1.
The preferred scheme of the present invention another kind, it is characterised in that: the part by weight scope of effective constituent methabenzthiazuron and azoles grass ketone is 25:1 to 400:1.
The preferred scheme of the present invention another kind, it is characterised in that: the part by weight scope of effective constituent methabenzthiazuron and azoles grass ketone is 50:1 to 200:1.
The preferred scheme of the present invention another kind, it is characterised in that: the part by weight of effective constituent methabenzthiazuron and azoles grass ketone is 50:1 or 100:1,150:1,200:1.
The present invention relates to a kind of herbicidal composition preparation, this herbicidal composition preparation is missible oil, water suspending agent, oil-suspending agent, wettable powder, granule or water dispersible granules, it is acceptable that herbicidal composition preparation is included on agricultural chemicals, and one or more are selected from the auxiliary agent of wetting agent, dispersion agent, thickening material, frostproofer, disintegrating agent, binding agent, defoamer, carrier or weighting agent.
The present invention relates to the purposes of described herbicidal composition in control weeds of wheat, described weeds of wheat is wheat paddock broadleaf weeds descurainia sophia (l.) webb ex prantl, shepherd's purse, Tender Catchweed Bedstraw Herb and gramineous weeds bromegrass, amur foxtail, the hard weeds such as careless, careless.
Herbicidal composition of the present invention is except two kinds of effective constituents, the auxiliary agent that carrier, emulsifying agent, dispersion agent, wetting agent, disintegrating agent, thickening material, cakingagent etc. agriculturally allow can also be added, it is processed into the multiple formulation of the applicable agricultural uses such as water dispersible granules, oil-suspending agent, wettable powder, granule according to the method for well known to a person skilled in the art.
Emulsifying agent is the mixture of one or more negatively charged ion, nonionogenic tenside, nonionogenic tenside is such as fatty acid esters of sorbitan, alkylphenol-polyethenoxy polyethenoxy ether, polyoxyethylene alkyl amine etc., anion surfactant is such as calcium dodecylbenzene sulphonate, Sodium dodecylbenzene sulfonate etc., it is possible to be one or more composition wherein. Dispersion agent can be selected from polycarboxylate, sulfonated lignin, sulfonated alkyl naphathalene, alkylphenol polyoxyethylene, Sodium dodecylbenzene sulfonate, alkyl polyoxyethylene ether sulfonate or one or more in alkylphenol-polyethenoxy base ether formaldehyde condensation products; Wetting agent can be selected from naphthalenesulfonate, sodium lauryl sulphate, Teepol, fatty alcohol-polyoxyethylene ether, polyoxyethylene nonylphenol ether, sorbitan fatty acid ester polyoxyethylene ether, alkylsulfonate one or more; Disintegrating agent can be selected from ammonium sulfate, urea, starch and derivative, low-substituted hydroxypropyl cellulose, polyvinylpyrrolidone, sodium alginate, calcium chloride, sodium-chlor, magnesium chloride, aluminum chloride one or more; Cakingagent can be selected from Natvosol, Zulkovsky starch, polyoxyethylene glycol, methylcellulose gum, polycarboxylic acid and water-soluble high-molecular compound Xylo-Mucine, polyvinyl alcohol, paraffin, gypsum, Vltra tears, polyacrylamide one or more; Carrier can be selected from white carbon black, kaolin, wilkinite, light calcium carbonate, gypsum, attapulgite, urea, sucrose, diatomite, wilkinite, ammonium sulfate, urea, potassium primary phosphate, potter's clay one or more.
Useful effect:
1. expand herbicide spectrum of knowing clearly. Methabenzthiazuron to weeds of wheat broadleaf weeds descurainia sophia (l.) webb ex prantl, shepherd's purse, Tender Catchweed Bedstraw Herb and gramineous weeds amur foxtail, hard careless, careless etc. all have good effect, but the weeds effect such as bromegrass, annual bluegrass is relative slightly poor; Broadleaf weeds descurainia sophia (l.) webb ex prantl, Tender Catchweed Bedstraw Herb are all had good effect by azoles grass ketone, and gramineous weeds amur foxtail and hard grass is invalid. Methabenzthiazuron and azoles grass ketone composite after have complementary advantages, wheat paddock broadleaf weeds descurainia sophia (l.) webb ex prantl, shepherd's purse, Tender Catchweed Bedstraw Herb and gramineous weeds bromegrass, amur foxtail, hard grass, grass are all had good effect.
2. enhance anti-effect. Methabenzthiazuron and the azoles grass composite rear interaction type of ketone are addition and have synergism, and anti-effect strengthens, more effective than alone.
3. avoid and use single herbicide to prevent and kill off weeds resistance can be caused to occur fast, delay the generation of herbicide resistance.
4. reduce dosage, reduce use cost, alleviate environmental pollution.
Embodiment
Below in conjunction with embodiment, the present invention will be further described, but the present invention should not be construed as and is confined to these embodiments.
Embodiment 1 prepares methabenzthiazuron (200g) and azoles grass ketone (2g) water suspending agent
Use 96% methabenzthiazuron (methabenzthiazuron) former medicine, the 93% former medicine preparation water suspending agent of azoles grass ketone (carfentrazone-ethyl). Taking quantitative methabenzthiazuron, the azoles grass former medicine of ketone respectively with electronic balance, after first adding emulsifier special dissolving, then add the N of 2 times, dinethylformamide, to dissolving completely, is diluted to 1% water suspending agent with the tween-80 aqueous solution of 0.1% for subsequent use.It is prepared into effective constituent methabenzthiazuron (200g) and azoles grass ketone (2g) composite water suspending agent.
Embodiment 2 prepares methabenzthiazuron (200g) and azoles grass ketone (4g) composite water suspending agent
Formulation method with embodiment 1, take methabenzthiazuron and azoles grass the former medicine of ketone be prepared.
Embodiment 3 prepares methabenzthiazuron (200g) and azoles grass ketone (8g) composite water suspending agent
Formulation method with embodiment 1, take methabenzthiazuron and azoles grass the former medicine of ketone be prepared.
Embodiment 4 prepares methabenzthiazuron (200g) and azoles grass ketone (16g) composite water suspending agent
Formulation method, with embodiment 1, takes the methabenzthiazuron azoles grass former medicine of ketone and is prepared.
Embodiment 5 prepares methabenzthiazuron (400g) and azoles grass ketone (2g) composite water suspending agent
Formulation method with embodiment 1, take methabenzthiazuron and azoles grass the former medicine of ketone be prepared.
Embodiment 6 prepares methabenzthiazuron (400g) and azoles grass ketone (4g) composite water suspending agent
Formulation method with embodiment 1, take methabenzthiazuron and azoles grass the former medicine of ketone be prepared.
Embodiment 7 prepares methabenzthiazuron (400g) and azoles grass ketone (8g) composite water suspending agent
Formulation method with embodiment 1, take methabenzthiazuron and azoles grass the former medicine of ketone be prepared.
Embodiment 8 prepares methabenzthiazuron (400g) and azoles grass ketone (16g) composite water suspending agent
Formulation method with embodiment 1, take methabenzthiazuron and azoles grass the former medicine of ketone be prepared.
Embodiment 9 prepares methabenzthiazuron (800g) and azoles grass ketone (2g) composite water suspending agent
Formulation method with embodiment 1, take methabenzthiazuron and azoles grass the former medicine of ketone be prepared.
Embodiment 10 prepares methabenzthiazuron (800g) and azoles grass ketone (4g) composite water suspending agent
Formulation method with embodiment 1, take methabenzthiazuron and azoles grass the former medicine of ketone be prepared.
Embodiment 11 prepares methabenzthiazuron (800g) and azoles grass ketone (8g) composite water suspending agent
Formulation method with embodiment 1, take methabenzthiazuron and azoles grass the former medicine of ketone be prepared.
Embodiment 12 prepares methabenzthiazuron (800g) and azoles grass ketone (16g) composite water suspending agent
Formulation method with embodiment 1, take methabenzthiazuron and azoles grass the former medicine of ketone be prepared.
Embodiment 13 prepares methabenzthiazuron (1600g) and azoles grass ketone (2g) composite water suspending agent
Formulation method with embodiment 1, take methabenzthiazuron and azoles grass the former medicine of ketone be prepared.
Embodiment 14 prepares methabenzthiazuron (1600g) and azoles grass ketone (4g) composite water suspending agent
Formulation method with embodiment 1, take methabenzthiazuron and azoles grass the former medicine of ketone be prepared.
Embodiment 15 prepares methabenzthiazuron (1600g) and azoles grass ketone (8g) composite water suspending agent
Formulation method with embodiment 1, take methabenzthiazuron and azoles grass the former medicine of ketone be prepared.
Embodiment 16 prepares (methabenzthiazuron 1600g) and azoles grass ketone (16g) composite water suspending agent
Formulation method with embodiment 1, take methabenzthiazuron and azoles grass the former medicine of ketone be prepared.
Embodiment 17 prepares 55% methabenzthiazuron azoles grass ketone (methabenzthiazuron+carfentrazone-ethyl) wettable powder (50:1)
Take quantitative methabenzthiazuron according to 50:1 proportioning, the azoles grass former medicine of ketone pulverize and sieve, add special assistant and filler, then pulverize with micronizer mill.
Embodiment 18 prepares 55% methabenzthiazuron azoles grass ketone (methabenzthiazuron+carfentrazone-ethyl) wettable powder (100:1)
Take quantitative methabenzthiazuron according to 100:1 proportioning, the azoles grass former medicine of ketone pulverize and sieve, add special assistant and filler, then pulverize with micronizer mill.
Embodiment 19 prepares 55% methabenzthiazuron azoles grass ketone (methabenzthiazuron+carfentrazone-ethyl) wettable powder (150:1)
Take quantitative methabenzthiazuron according to 150:1 proportioning, the azoles grass former medicine of ketone pulverize and sieve, add special assistant and filler, then pulverize with micronizer mill.
Embodiment 20 prepares 55% methabenzthiazuron azoles grass ketone (methabenzthiazuron+carfentrazone-ethyl) wettable powder (200:1)
Take quantitative methabenzthiazuron according to 200:1 proportioning, the azoles grass former medicine of ketone pulverize and sieve, add special assistant and filler, then pulverize with micronizer mill.
Embodiment 21 laboratory experiment
1) test conditions
Examination weeds are supplied to be descurainia sophia (l.) webb ex prantl (Descurainiasophia (L.) webb), Tender Catchweed Bedstraw Herb (GaliumaparinaL.), amur foxtail (AlopecurusaequalisSobl.), hard grass (Sclerochloakengiana (Ohwi) Tzvel.). There iing the cultivation carrying out in the glass greenhouse of heating installation testing examination material, temperature 15～25 DEG C, natural lighting. Being sowed in the plastic tub that diameter is 9cm by quantitative descurainia sophia (l.) webb ex prantl, Tender Catchweed Bedstraw Herb, amur foxtail, bromegrass seed, weeds earthing 1～2mm, puts into the enamel tray that water is housed, and allows water infiltrate gradually, is transferred to phytotron stand-by after waiting water to be seeped into soil table.
Except within 1～2 day, can not watering after spray medicine, regularly with bottom infiltrating irrigation mode moisturizing, to keep soil humidity.
2) test design
Reagent agent is the water suspending agent in 96% methabenzthiazuron (methabenzthiazuron) former medicine, 93% azoles grass ketone (carfentrazone-ethyl) former medicine and embodiment 1～16.
Dosage is arranged, methabenzthiazuron establishes 200,400,800,1600ga.i./ha, azoles grass ketone establishes 2,4,8,16ga.i./ha, methabenzthiazuron and the azoles grass composite water suspending agent using dosage of ketone are according to the numerical value in embodiment 1～16.
Tested in hard grass, amur foxtail 2 leaf 1 heart phase; Descurainia sophia (l.) webb ex prantl 3～5 leaf phase; Tender Catchweed Bedstraw Herb 1～2 takes turns the stem leaf even spraying process of compound leaf phase.
ASS-4 type is adopted automatically to control sprinkling system, Fan spray head, in conjunction with sprinkler pressure, flow etc., by the actual long-pending (1.1m of spray powder2) spray 50mL liquid (amounting to a mu water consumption 30kg), to debug travelling speed, pending plastic tub has been evenly arranged on spraying platform, even spraying processes. Spray pressure 0.4KPa, Fan spray head flow 800mL/min. Spray successively to a large amount by low amounts. Often process repeats 4 times.
3) test-results calculates
Combined action type after using with Gowing method evaluation.
The anti-effect calculating formula of Gowing law theory is:
E0=X+Y × (100-X) ÷ 100
In formula, X, Y are respectively the anti-valid value of the actual measurement (%) of two single doses, and E is the anti-valid value of the actual measurement (%) that different ratio is used with, E0For the anti-valid value of theory (%). Work as E-E0It is addition, E-E between-10～10 time0> 10 time be synergism, E-E0< it is antagonistic action when-10.
Table 1 methabenzthiazuron and azoles grass ketone mixture combined action laboratory experiment
As shown in Table 1, weeds of wheat descurainia sophia (l.) webb ex prantl and amur foxtail are had good effect by methabenzthiazuron, also have certain anti-effect to another two kinds for examination weeds Tender Catchweed Bedstraw Herb, bromegrass; Broadleaf weeds descurainia sophia (l.) webb ex prantl, Tender Catchweed Bedstraw Herb are all had good effect by azoles grass ketone, and gramineous weeds amur foxtail and hard grass is invalid.
As shown in Table 1, methabenzthiazuron and azoles grass ketone composite after to descurainia sophia (l.) webb ex prantl effect increase, E-E0 value is just, shows as addition.When part by weight is 100:1, E-E0 value is up to 4.9, and when be secondly part by weight being 200:1, E-E0 value is 3.9, and when be part by weight being again 50:1, E-E0 value is 3.7. Part by weight shows as addition in 12.5:1 to 800:1 scope, it is preferable that part by weight scope is 25:1 to 400:1, it is more preferable to part by weight scope be 50:1 to 200:1.
As shown in Table 1, methabenzthiazuron and azoles grass ketone composite after to Tender Catchweed Bedstraw Herb effect increase, E-E0 value is just, shows as addition or synergism. When part by weight is 200:1, E-E0 value is up to 10.8, and when be secondly part by weight being 50:1, E-E0 value is 5.9, and when be part by weight being again 100:1, E-E0 value is 5.1. Part by weight shows as addition or synergism in 12.5:1 to 800:1 scope, it is preferable that part by weight scope is 25:1 to 400:1, it is more preferable to part by weight scope be 50:1 to 200:1.
As shown in Table 1, methabenzthiazuron and azoles grass ketone composite after to amur foxtail effect increase, E-E0 value is just, shows as addition. When part by weight is 200:1, E-E0 value is up to 4.7, and when be secondly part by weight being 100:1, E-E0 value is 4.3, and when be part by weight being again 50:1, E-E0 value is 4.2. Part by weight shows as addition in 12.5:1 to 800:1 scope, it is preferable that part by weight scope is 25:1 to 400:1, it is more preferable to part by weight scope be 50:1 to 200:1.
As shown in Table 1, methabenzthiazuron and azoles grass ketone composite after hard grass effect is increased, E-E0 value is just, shows as addition or synergy. When part by weight is 100:1, E-E0 value is up to 10.1, and when be secondly part by weight being 50:1, E-E0 value is 6.4, and when be part by weight being again 25:1, E-E0 value is 6.3. Part by weight shows as addition in 12.5:1 to 800:1 scope, it is preferable that part by weight scope is 25:1 to 400:1, it is more preferable to part by weight scope be 50:1 to 200:1.
In sum, methabenzthiazuron and the composite rear mutual supplement with each other's advantages of azoles grass ketone, all have good effect to descurainia sophia (l.) webb ex prantl, Tender Catchweed Bedstraw Herb, hard grass, amur foxtail, and composite effect belongs to addition or synergism.
Embodiment 22 field control effect measures
1. test conditions
1) selection of crop and Cultivar
Wheat breed is Jimai sowing on October 9th, 22,2014, sows 15 kilograms for every mu, and line-spacing is 18cm.
2) selection of subjects weeds
Descurainia sophia (l.) webb ex prantl (Descurainiasophia (L.) webb), Tender Catchweed Bedstraw Herb (GaliumaparinaL.), hard grass (Sclerochloakengiana (Ohwi) Tzvel.), amur foxtail (AlopecurusaequalisSobl.) etc.
3) cultivation condition
Test wheat paddock is located at the office Xia Jia village, Xu Jia building, Tai'an city of Shandong province to carry out, and testing ground area 50 mu, around crop is wheat. Test ground is loam, organic content 1.8%, pH value 7.15, uses formula fertile 50 kilograms of composite fertilizers during wheat cultivation, and the jointing stage executes 10 kilograms of urea. Soil moisture content RH(% during dispenser) it is about 50.
Test physical features is smooth, and management is consistent, and it is better that fertility and water water condition. Water 2 times to test. Water of surviving the winter (at the beginning of 11 months) is watered, irrigate in grouting time (mid-May) after wheat fallen flowers before surviving the winter.
Stubble maize planting before test ground, weedicide used is mesotrione and atrazine.
2. test design
1) test medicine
70% methabenzthiazuron (methabenzthiazuron) WP, 40% azoles grass ketone (carfentrazone-ethyl) WDG, 55% methabenzthiazuron azoles grass ketone (methabenzthiazuron+carfentrazone-ethyl) WP(methabenzthiazuron: azoles grass ketone weight ratio is respectively 50:1,100:1,150:1,200:1), i.e. embodiment 17-20 preparation.
2) using method
Spraying apparatus is than senior knapsack sprayer, must not test each process and be watered 450 liters of even spraying by every hectare. In the stem leaf even spraying process of winter wheat field annual grassy weeds 2～5 leaf phase.
3) spraying time and number of times
Testing and carry out on March 19th, 2015, dispenser is once altogether. During dispenser, wheat is in the phase of turning green, and grows fine; Weeds in field 2～5 leaf phase, based on descurainia sophia (l.) webb ex prantl, Tender Catchweed Bedstraw Herb, hard grass, amur foxtail.
3. drug effect method of calculation
Calculation formula:
Prevention effect (%)=(after check plot number of weeds-treatment zone medicine the residual strain number of weeds) number of weeds × 100, ÷ check plot
Fresh heavy anti-effect (%)=(fresh grass weight-treatment zone, blank district fresh grass weight) fresh grass weight × 100, ÷ blank district
Table 255% methabenzthiazuron azoles grass ketone WP wheat paddock field efficacy measures (after dispenser investigation in 30 days)
As shown in Table 2,70% methabenzthiazuron WP is excellent to descurainia sophia (l.) webb ex prantl, hard grass effect, and Tender Catchweed Bedstraw Herb, shepherd's purse effect is better; 40% azoles grass ketone WDG is all excellent to descurainia sophia (l.) webb ex prantl, Tender Catchweed Bedstraw Herb effect, and shepherd's purse effect is also better, and hard grass is invalid; Descurainia sophia (l.) webb ex prantl, Tender Catchweed Bedstraw Herb, shepherd's purse, hard grass are all had good effect at the compound preparation 55% methabenzthiazuron azoles grass each proportioning of ketone WP by both.
55% methabenzthiazuron azoles grass ketone (100:1) anti-effect is best, and the anti-effect of total strain reaches 98%, and fresh heavy anti-effect reaches 99.2%. Next is 55% methabenzthiazuron azoles grass ketone (200:1)
By range estimation, not observing herbicide damage and occur in field experiment, 55% methabenzthiazuron azoles grass ketone WP is to wheat safety.
Be used alone wherein a kind of effective constituent and compare, the present invention is composite expands herbicide spectrum, a dispenser can control the weeds in crop whole vegetative period, not only herbicidal effect is remarkable, and environmentally friendly, on second stubble crop without impact, the pollution of environment is little, to people, animal, birds and beneficial organism safety, be conducive to keeping ecological balance.
The above is only the preferred embodiment of the present invention; it is noted that for those skilled in the art, under the premise without departing from the principles of the invention; can also making some improvement and combination, these improve and combination also should be considered as protection scope of the present invention.
Claims (6)
1. one kind contains methabenzthiazuron and the herbicidal composition of azoles grass ketone, it is characterised in that: the part by weight scope of effective constituent methabenzthiazuron and azoles grass ketone is 12.5:1 to 800:1.
2. according to claim 1 a kind of containing the herbicidal composition of methabenzthiazuron and azoles grass ketone, it is characterised in that: the part by weight scope of effective constituent methabenzthiazuron and azoles grass ketone is 25:1 to 400:1.
3. according to claim 2 a kind of containing the herbicidal composition of methabenzthiazuron and azoles grass ketone, it is characterised in that: the part by weight scope of effective constituent methabenzthiazuron and azoles grass ketone is 50:1 to 200:1.
4. according to claim 3 a kind of containing the herbicidal composition of methabenzthiazuron and azoles grass ketone, it is characterised in that: the part by weight of effective constituent methabenzthiazuron and azoles grass ketone is 50:1 or 100:1,150:1,200:1.
5. according to claim 1-4 a kind of containing methabenzthiazuron and azoles grass ketone herbicidal composition, it is characterized in that, described herbicidal composition preparation is missible oil, water suspending agent, oil-suspending agent, wettable powder, granule or water dispersible granules, it is acceptable that herbicidal composition preparation is included on agricultural chemicals, and one or more are selected from the auxiliary agent of wetting agent, emulsifying agent, dispersion agent, thickening material, frostproofer, disintegrating agent, binding agent, defoamer, carrier or weighting agent.
6. according to claim 5 a kind of containing the herbicidal composition of methabenzthiazuron and azoles grass ketone, it is characterized in that, the purposes of described herbicidal composition preparation in control weeds of wheat, described weeds of wheat is wheat paddock broadleaf weeds descurainia sophia (l.) webb ex prantl, shepherd's purse, Tender Catchweed Bedstraw Herb and gramineous weeds bromegrass, amur foxtail, the hard weeds such as careless, careless.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2003009686A1 (en) * | 2001-07-24 | 2003-02-06 | Syngenta Participations Ag | Herbicidal composition |
| CN101147488A (en) * | 2007-11-08 | 2008-03-26 | 钱永康 | Herbicide |
| CN102986705A (en) * | 2012-11-30 | 2013-03-27 | 王学权 | Herbicide composition containing topramezone |
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- 2016-03-15 CN CN201610145995.XA patent/CN105660670A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003009686A1 (en) * | 2001-07-24 | 2003-02-06 | Syngenta Participations Ag | Herbicidal composition |
| CN101147488A (en) * | 2007-11-08 | 2008-03-26 | 钱永康 | Herbicide |
| CN102986705A (en) * | 2012-11-30 | 2013-03-27 | 王学权 | Herbicide composition containing topramezone |
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| 曹新梅 等: "唑草酮20%微囊悬浮剂高效液相色谱分析方法", 《农药科学与管理》 * |
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