CN103719131A - Weeding composition containing fentrazamide and propoxycarbazone - Google Patents
Weeding composition containing fentrazamide and propoxycarbazone Download PDFInfo
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- CN103719131A CN103719131A CN201310729942.9A CN201310729942A CN103719131A CN 103719131 A CN103719131 A CN 103719131A CN 201310729942 A CN201310729942 A CN 201310729942A CN 103719131 A CN103719131 A CN 103719131A
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- fentrazamide
- procarbazone
- herbicidal combinations
- propoxycarbazone
- weeding composition
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Abstract
The invention discloses a weeding composition containing fentrazamide and propoxycarbazone. The mass ratio of the fentrazamide to the propoxycarbazone serving as active ingredients in the weeding composition is (1-50):(50-1); the total mass of the fentrazamide and the propoxycarbazone serving as active ingredients in a preparation accounts for 1-80 percent of the mass of the preparation; the remaining is auxiliary components which are allowed to be used in pesticides and acceptable; the dosage forms of the weeding composition include missible oil, suspending agent, wettable powder, water dispersible granules, emulsion in water, microemulsion, granules, microcapsules and water aqua. The weeding composition can prevent and eliminate annual weed barnyard grass and various broad leaf weeds in paddy rice, as well as grassy weeds and a part of broad leaf weeds in the fields of cereal crops such as wheat, barley and rye.
Description
Technical field
The present invention relates to agriculture chemical compounding technical field, particularly relate to a kind of Herbicidal combinations that contains fentrazamide and procarbazone.
Background technology
Fentrazamide is the carbamyl Tetrazoline series new herbicides of the initiative of Japanese Beyer Co., Ltd and exploitation.This medicament is effective to annual weed barnyard grass class and various broad leaved weed, and holding effect is long, and transplanting rice is had to very high safety.
Procarbazone is the sulfonylurea weed killer herbicide of Bayer A.G's exploitation.Be mainly used in preventing and kill off cereal crop and draw grass and bromegrass and part broad leaved weed etc. as amur foxtail, windgrass, cogongrass, roegneria kamoji, Ah draping over one's shoulders as the grassy weed in wheat, barley, rye field.
Reasonably chemical herbicide is composite or be mixed and have expansion herbicidal spectrum, improve control efficiency, extend the optimum period for applying fertilizer, reduce dosage, reduce poisoning, reduce residual, delay the positive feature such as drug-fast generation and development, mixture of herbicides or to be mixed be one of the effective method the most addressing the above problem.We filter out fentrazamide and procarbazone is composite on the basis of lab screening and field trial, have obvious synergistic effect.And about fentrazamide and the composite Herbicidal combinations of procarbazone and application, there is no at present people reported.
Summary of the invention
Based on above situation, the object of the invention is to provide a kind of new and effective agricultural chemicals Herbicidal combinations, can prevent and kill off paddy rice annual weed barnyard grass class and various broad leaved weed and cereal crop as the grassy weed in wheat, barley, rye field and part broad leaved weed.
Technical scheme of the present invention realizes by following measures:
A kind of Herbicidal combinations, in this Herbicidal combinations, the mass ratio of active ingredient fentrazamide and procarbazone is 1～50: 50～1, described Herbicidal combinations of the present invention is through toxicity test experimental verification, the mass ratio of fentrazamide and procarbazone is 1～20: 20～1 o'clock, synergistic effect was better.
The formulations of pesticide that described Herbicidal combinations of the present invention can be prepared are missible oil, suspending agent, wetting powder, water dispersible granules, aqueous emulsion, microemulsion, granule, microcapsule formulations, aqua.Fentrazamide and the procarbazone gross mass in preparation accounts for 1%～80% of the whole quality of the pharmaceutical preparations, while wherein accounting for 5%～50%, and toxicity and residually reach good balance, cost is also lower.
The specific embodiments of the formulations of pesticide that Herbicidal combinations of the present invention is mixed with is as follows:
Described Herbicidal combinations is cream preparation, and the mass fraction of component is: 1～50 part of fentrazamide; 1～50 part of procarbazone; 10～30 parts of conventional emulsifiers; 20～50 parts of conventional solvents; 1～5 part of conventional synergist.The concrete production stage of this cream preparation is for first adding active ingredient fentrazamide and procarbazone in solvent the oily liquids that becomes transparent and homogeneous after adding again emulsifier, synergist to stir after dissolving completely, filling, can be made into the cream preparation of the present composition.
Described Herbicidal combinations is suspending agent, and the mass fraction of component is: 1～50 part of fentrazamide; 1～50 part of procarbazone; 5～20 parts of dispersants; 1～5 part of antifreezing agent; 0.1～2 part of thickener; 0.1～0.8 part of defoamer; 0～10 part of penetrating agent; 0.1～5 part of pH value conditioning agent; Water, surplus.The concrete production stage of this suspending agent is for first mixing other auxiliary agents, through high speed shear, mix, add effective one-tenth fentrazamide and procarbazone, in ball crusher, abrading-ball is 2～3 hours, make a diameter all below 5mm, can be made into the suspending agent preparation of the present composition.
Described Herbicidal combinations is wetting powder, and the mass fraction of component is: 1～50 part of fentrazamide; 1～50 part of procarbazone; ; 3～10 parts of dispersants; 1～5 part of wetting agent; Filler, surplus.The concrete production stage of this wetting powder is: by above-mentioned formula, active ingredient fentrazamide is mixed with procarbazone and dispersant, wetting agent and filler, uniform stirring in stirred tank, after airslide disintegrating mill, mixing, can be made into the wetting powder of the present composition.
Described Herbicidal combinations is water dispersible granules, and the mass fraction of component is: 1～50 part of fentrazamide; 1～50 part of procarbazone; 3～10 parts of dispersants; 1～10 part of wetting agent; 1～5 part of disintegrant; Filler surplus.The concrete production stage of this water dispersible granules is: by above-mentioned formula, active ingredient fentrazamide is mixed with procarbazone and dispersant, wetting agent, disintegrant and filler, with micro jet, pulverize, through mediating, then add and in fluidized bed prilling dryer, carry out granulation, dry, screening by sample analysis, can be made into the water dispersible granules of the present composition.
Described Herbicidal combinations is aqueous emulsion, and the mass fraction of component is: 1～50 part of fentrazamide; 1～50 part of procarbazone; 3～30 parts of emulsifier; 5～15 parts of solvents; 2～15 parts of stabilizing agents; 1～5 part of antifreezing agent; 0.1～8 part of defoamer; 0.2～2 part of thickener; Water, surplus.The concrete production stage of this aqueous emulsion is: first fentrazamide and procarbazone, solvent and emulsifier, cosolvent are added together, make to be dissolved into uniform oil phase; By part water, antifreeze, other the insecticides adjuvant such as antimicrobial mixes into uniform water; When reactor high speed stirs, oil phase is added to water, slowly add water until reach phase inversion point, open clipper and carry out high speed shear, and add remaining water, shear about half an hour, form the aqueous emulsion of oil-in-water type, can be made into the aqueous emulsion of the present composition.
Described Herbicidal combinations is microemulsion, and the mass fraction of component is: 1～50 part of fentrazamide; 1～50 part of procarbazone; 10～30 parts of emulsifier, 1～8 part of antifreezing agent, 0.5～10 part of stabilizing agent, 20～50 parts of conventional solvent cosolvents.Fentrazamide and procarbazone are dissolved completely with cosolvent, then add other compositions such as emulsifier, antifreezing agent stabilizing agent, evenly mix, finally add water, after fully stirring, can be made into microemulsion.
Described Herbicidal combinations is granule, and the mass fraction of component is: 1～50 part of fentrazamide; 1～50 part of procarbazone; 1～10 part of wetting dispersing agent; 0.1～5 part of thickener; 0.1～5 part of defoamer; Castor oil, surplus is supplied.Each components such as active ingredient fentrazamide and procarbazone, dispersant, stabilizing agent, defoamer and solvent are mixed in the ratio of formula, put into after the grinding of sand milling still, send in mixer for well-distribution and mix and get product.
Described Herbicidal combinations is microcapsule formulations, and the mass fraction of component is: 1～50 part of fentrazamide; 1～50 part of procarbazone; 5～20 parts, urea; 5～20 parts, formaldehyde; 5～20 parts of emulsifying dispersants; 1～5 part of antifreezing agent; 0.1～2 part of thickener; 0.1～0.8 part of defoamer; Water, surplus.In being housed, the there-necked flask of agitating device adds urea and formaldehyde (amount of substance ratio is about l:1.5～2.0), left and right, pH value to 8～9 with sodium hydroxide solution regulator solution, then be warming up to 70～80 ℃, reaction obtains stable urea resin prepolymer.Get a certain amount of fentrazamide and procarbazone and be dissolved in cyclohexane, and add emulsifying dispersant in solution, follow vigorous stirring, the O/W type stable emulsion that to be made into the aqueous solution of take containing emulsifying dispersant be water.Above-mentioned urea resin prepolymer is added in emulsion, regulate pH value, polymerization reaction take place under acid catalysis condition, is wrapped oil phase substance, forms microcapsule granule.Slowly heat up, solidify, temperature is controlled at 40～50 ℃, hardening time 1h.Selection adds appropriate auxiliary agent, the microcapsules that gets final product stablely.
Described Herbicidal combinations is aqua, and the mass fraction of component is: 1～50 part of fentrazamide; 1～50 part of procarbazone; 0.1～30 part of wetting dispersing agent; 2～8 parts of antifreezing agents; 0.1～1 part of defoamer; 0.1～3 part of thickener; 5～15 parts of spreader-stickers; Water, surplus is supplied.By active ingredient fentrazamide and procarbazone, dissolve completely with cosolvent, then add other compositions such as dispersant, antifreezing agent, defoamer, evenly mix, finally add water, after fully stirring, get final product to obtain finished product
Wherein above-described emulsifier is selected from calcium dodecyl benzene sulfonate and aliphatic acid polyethenoxy ether, alkylphenol polyoxyethylene sulfosuccinate, styrylphenol polyoxyethylene ether, polyoxyethylene nonylphenol ether, castor oil polyoxyethylene ether, aliphatic acid polyethenoxy base ester, any or more than one any mixtures than forming in polyoxyethylene aliphatic alcohol ether.
Described solvent is dimethylbenzene or biodiesel, toluene, diesel oil, methyl alcohol, ethanol, n-butanol, isopropyl alcohol, turpentine-based vegetable oil code name is ND-45, solvent naphtha, dimethyl formamide, dimethyl sulfoxide (DMSO), one or more in water equal solvent are arbitrarily than the mixture forming.
It is LG-3, GY-D1252, GY-D1256, SNWGF-01 that described dispersant is selected from polycarboxylate code name, lignosulfonates code name is 201107,21108, alkylphenol polyoxyethylene methyl ether condensate sulfate, alkylsulfonate calcium salt, naphthalene sulfonic acid-formaldehyde condensation product sodium salt, alkylphenol polyoxyethylene, polyoxyethylene carboxylate, aliphatic amine polyoxyethylene ether, one or more in fatty acid glyceride APEO.
Described wetting agent is selected from lauryl sodium sulfate, calcium dodecyl benzene sulfonate, and Nekal BX, moistening bleeding agent F, alkylbenzenesulfonate polyoxyethylene triphen is phosphenylic acid salt dimly, spaonin powder, silkworm excrement, one or more in soapberry powder.
Described disintegrant is selected from bentonite, urea, ammonium sulfate, aluminium chloride, citric acid, succinic acid, one or more in sodium bicarbonate.
Described thickener is selected from xanthans, carboxymethyl cellulose, carboxyethyl cellulose, methylcellulose, Magnesiumaluminumsilicate, in polyvinyl alcohol one or more.
Described stabilizing agent is selected from sodium citrate, a kind of in resorcinol.
Described antifreezing agent is selected from ethylene glycol, propane diols, one or more in glycerine.
Described defoamer is selected from silicone oil, silicone compound, C
10-20saturated fat acid compounds, C
8-10one or more of fatty alcohol.
Described filler is selected from kaolin, diatomite, bentonite, attapulgite, white carbon, starch, one or more in precipitated calcium carbonate.
The present invention be take the complex weedicide that active ingredient is fentrazamide and procarbazone and is had obvious synergistic effect, delay the drug-fast generation in key, and reduced to become to produce cost and use cost, can prevent and kill off paddy rice annual weed barnyard grass class and various broad leaved weed and cereal crop as the grassy weed in wheat, barley, rye field and part broad leaved weed.
Embodiment
For making technical scheme of the present invention, object and advantage are clearer, and the present invention describes with following specific embodiment, but the present invention is not limited to these examples.The mode that effect experiment of the present invention adopts indoor biometrics and field trial to combine, if no special instructions, the ratio of below mentioning is all ratio of quality and the number of copies.
Embodiment: fentrazamide proportioning co-toxicity experiments different from procarbazone.
1.1 reagent agents:
96% the former medicine of fentrazamide, 96% the former medicine of procarbazone, above-mentioned former medicine provides by research and development department of extra large rel medicine company limited company.
1.2 test targets:
Shepherd's purse.
1.3 experimental procedures:
Adopt potted plant cauline leaf facture (NY/T1155.4-2006): at the in-built quantitative soil of polypots of high 6 ㎝, diameter 9 ㎝, will be for the sowing of examination target weed seed 15-20 grain in polypots, after covering the fine earth that 0.5-1 ㎝ is thick, be placed on cultivation in greenhouse, treat that weeds grow to the 2-4 leaf phase and carry out cauline leaf spraying processing, every alms bowl hydrojet 1mL, every processing repeats 4 times, and establishes the contrast that is treated to that does not contain medicament.After processing, examination is just placed in cultivation greenhouse in, and the growing state of routine observation target weeds is estimated target be injured symptom and growth inhibition situation, and claimed acrial part fresh weight or strain fresh weight, the toxicity action with form fresh weight inhibiting rate evaluation medicament to target weeds after 15d.
1.4 control times: test is processed and to be estimated target be injured symptom and growth inhibition situation after 15d, and claims acrial part fresh weight.
1.5 data statistics and analysis:
According to investigation statistics, calculate fresh weight inhibiting rate (%).
Fresh weight inhibiting rate P (%)=(contrast fresh weight-processing fresh weight)/processing fresh weight * 100%.
Synergy evaluation method:
According to Gowing method, evaluate weed killer herbicide mode of application (NY/T1155.7-2006), its formula is as follows:
E
0＝X+Y-XY/100
In formula, X is fentrazamide fresh weight inhibiting rate to target weeds when alone with certain dosage;
Y is procarbazone fresh weight inhibiting rate to target weeds when alone with certain dosage;
E
0theoretical value to target weeds fresh weight inhibiting rate during for fentrazamide and two kinds of pharmacy mix of procarbazone;
Measured value to target weeds fresh weight inhibiting rate when E is fentrazamide and two kinds of pharmacy mix of procarbazone.
Evaluation criterion: work as E-E
0during > 10%, be expressed as synergistic effect, as-10% < E-E
0during < 10%, be expressed as summation action, work as E-E
0during <-10%, be expressed as antagonism.
The toxicity test result of two kinds of medicaments of 2.1 fentrazamides and procarbazone to shepherd's purse
Table 1 be two kinds of medicaments of fentrazamide and procarbazone mix virulence measurement result
Virulence test example shows, while being 1:50～50:1 dilution in active ingredient fentrazamide and procarbazone ratio, shows certain synergistic effect, and the synergistic effect that wherein fentrazamide and procarbazone are 1:20～20:1 is the most obvious.Result of the test shows, under indoor conditions, fentrazamide and procarbazone compound synergic effect are good, and suggestion is carried out further field control effectiveness test to suitable proportion 1:20～20:1 left and right mixture preparation, to evaluate its field practical application effect.
3, field control effectiveness test
3.1 field control effectiveness test eliminating weed in wheat fields
Test is in proving ground, Wheat in Henan Province field, the consistent middle fertility of soil fertility, and during test, humidity is moderate, and experimental field main weeds has Tong grass, bromegrass etc., weeds are evenly distributed.Result of the test is as follows:
The composite field efficiency test of table 2 fentrazamide and procarbazone
Field experiment result shows, fentrazamide procarbazone is all better with the composite preventive effect to weeds such as wheat grass family, broadleaved herbs of 1:2 ratio, according to field, estimate, within the scope of test dose, plant growth is normal, have no plant and produce poisoning and anomaly, illustrate that it is safe to wheat.
3.2 field control effectiveness tests are prevented and kill off paddy field weed
Test site is positioned at San Qiao fore-and-aft gangway village, Fu Chun street, Fuyang City, and rice varieties is that II is excellent 084, and pH value is 7.2, belongs to flat area, middle fertility, and experimental field main weeds has barnyard grass, moleplant seed etc., weeds are evenly distributed.Result of the test is as follows:
The composite field efficiency test of table 3 fentrazamide and procarbazone
Field experiment result shows, fentrazamide procarbazone is all better with the composite preventive effect to weeds such as paddy field barnyard grass class, broadleaved herbs of 1:2 ratio, according to field, estimate, within the scope of test dose, plant growth is normal, have no plant and produce poisoning and anomaly, illustrate that it is safe to paddy rice.
To sum up virulence and field experiment result verification, the Herbicidal combinations that the present invention contains fentrazamide and procarbazone, be mainly used in preventing and kill off annual weed barnyard grass class and the various broad leaved weeds such as paddy rice, wheat, and to target crop safety, compare with single dose, Herbicidal combinations of the present invention has mechanism of action uniqueness, there is consumption few, weeding is general more extensive, and the lasting period is longer, more the obvious advantage such as environmental protection.So research and development of the present invention and popularization have great social effect and environment protection significance.
Claims (4)
1. a Herbicidal combinations, is characterized in that: the active ingredient of this Herbicidal combinations is fentrazamide and procarbazone binary built, and all the other are auxiliary element, and wherein the mass ratio of active ingredient fentrazamide and procarbazone is 1～50: 50～1.
2. Herbicidal combinations according to claim 1, is characterized in that: fentrazamide and the procarbazone gross mass in preparation accounts for 1%～80% of the whole quality of the pharmaceutical preparations.
3. Herbicidal combinations according to claim 2, is characterized in that: fentrazamide and the procarbazone gross weight in preparation accounts for 5%～50% of the whole quality of the pharmaceutical preparations.
4. according to the Herbicidal combinations described in claim 1 or 2 or 3, it is characterized in that: the formulations of pesticide that this Herbicidal combinations can be prepared are missible oil, suspending agent, wetting powder, water dispersible granules, aqueous emulsion, microemulsion, granule, microcapsule formulations, aqua.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105052980A (en) * | 2015-07-17 | 2015-11-18 | 安徽常泰化工有限公司 | Fentrazamide-containing weeding microemulsion |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105052980A (en) * | 2015-07-17 | 2015-11-18 | 安徽常泰化工有限公司 | Fentrazamide-containing weeding microemulsion |
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Application publication date: 20140416 |
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