CN103598195A - Mixed herbicide containing clodinafop-propargyl and procarbazone sodium - Google Patents
Mixed herbicide containing clodinafop-propargyl and procarbazone sodium Download PDFInfo
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- CN103598195A CN103598195A CN201310585705.XA CN201310585705A CN103598195A CN 103598195 A CN103598195 A CN 103598195A CN 201310585705 A CN201310585705 A CN 201310585705A CN 103598195 A CN103598195 A CN 103598195A
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Abstract
The invention discloses a mixed herbicide containing clodinafop-propargyl and procarbazone sodium. According to the herbicide, the clodinafop-propargyl and the procarbazone sodium are taken as main effective components, and the mass ratio of the clodinafop-propargyl to the procarbazone sodium is 1:(4-18). The mixed herbicide disclosed by the invention has a significant effect in application of weeding in a wheat paddock, particularly an application thereof in preventing and removing various graminaceous and broadleaved weeds in the wheat paddock. Compared with a single dosage, by adopting the herbicide disclosed by the invention, the weed resistance is delayed under the premise that the pesticide effect is improved, and the mixed herbicide is wide in weed control spectrum, long in lasting period, and has safety on wheat and after-reap crops.
Description
Technical field
The present invention relates to a kind of weed killer herbicide.
Background technology
Wheat is one of most important cereal resource in the world, and output is only second to paddy, occupies the 2nd, is the main food resources of the mankind, is again the important raw material of industry.But, weeds of wheat harm is a key factor that affects Quality Wheat high yield always, and the main weeds that endangers at present wheat paddock has: Alopecurus, Chinese amur foxtail, wild oat, Chinese silvergrass, annual bluegrass, clearvers, chickweed, geranium wilfordii, Veronica, large hairy tare, shepherd's purse, wild cured dish, wartwort, clavula etc.In recent years along with the variation of cropping system and cultivation management, the weeds biotype that some are new and the non-farmland of part malignant weed are very fast in wheat paddock development, some new weed communities or form, the continuous single rising of using one side to cause resisting (resistance to) Types of Medicine weeds population of chemical herbicide, also reduced on the other hand effective utilization of chemical herbicide, soil and Practice for Pesticide Residue in Agricultural Products exceed standard, and are seriously threatening the safety in production of wheat.
Clodinafop-propargyl (Clodinafop-propargyl), chemical name: (R)-2-(4-(the fluoro-5-Chloro-2-Pyridyle of 3-oxygen base) phenoxy group) propionic acid propynyl ester.Its structural formula is as follows:
Clodinafop-propargyl is the fluorine-containing high-efficiency low-toxicity weed killer herbicide of phenoxy carboxylic acid chirality of Switzerland Xian Zhengda crop protection Co., Ltd exploitation; effective especially to pernicious grassy weed; mix with certain proportion with safener; for cereal crop, grassy weed is had to excellent preventive effect as mouse tail amur foxtail, wild oat, perennial ryegrass, annual bluegrass, green foxtail etc.
The mechanism of action of clodinafop-propargyl is for suppressing the activity of acetyl-CoA carboxylase (ACCase) in plant corpus, interior suction conductivity weed killer herbicide, blade and leaf sheath by plant corpus absorb, phloem conduction, accumulates in the meristematic tissue of plant corpus, suppresses acetyl-CoA carboxylase, fatty acid is synthesized to be stopped, the growth division of cell can not normally be carried out, and film system is logical to be waited containing fat structural deterioration, finally causes plant dead.Clodinafop-propargyl is that after efficient, the stable seedling of wheat paddock grassy weed, cauline leaf is processed weed killer herbicide.By some countries, thought to prevent and treat the first-selected product of amur foxtail, wild oat, other pernicious grassy weeds are also had to good preventive effect, effectively same under low temperature, the condition such as rainy, dry.Grassy weed stops growing in 2 days after dispenser, the withered flavescence of young leaves before this, and whole strain meeting is dead after week at 3-5.Clodinafop-propargyl mainly absorbs by weeds leaf portion tissue, and root absorbs hardly.Leaf portion conducts from top to bottom by xylem, and accumulates in meristematic tissue after absorbing, and under high temperature, super-humid conditions, can accelerate conduction of velocity.Clodinafop-propargyl is degraded rapidly in soil, basic non-activity in soil, on succession crop without impact.
Procarbazone, Procarbazone sodium.Chemical name: 2-((((4,5-dihydro-4-methyl-5-oxo-3-propoxyl group-1H-1,2,4-triazol-1-yl) formyl) amino) sulphonyl) methyl benzoate sodium salt, structural formula is as follows:
It is novel sulfonylurea herbicide, acetolactate synthestase ALS inhibitor, and making branched-chain amino acid in weeds cell, as valine, leucine and isoleucine exhaust rapidly, is first to affect novel protein to synthesize, and finally makes cell stop growing, until withered.After being mainly used in seedling, cauline leaf is processed, prevent and kill off cereal crop as the grassy weed in wheat, barley, rye field, comprise the bromegrass that annual weed and part perennial weed are drawn grass and are difficult to remove as wild oat, amur foxtail, windgrass, cogongrass, roegneria kamoji, Ah draping over one's shoulders, and part broad leaved weed is as white shepherd's purse, penny cress etc.For making full use of the soil activation of active ingredient, be preferably in when early spring, weeds just recovered to grow and use.The selectivity of procarbazone is mainly based on different with the degradation speed in susceptible weeds body at wheat.
Wheat paddock weed killer herbicide is limit by crop safety at present, herbicide spectrum is also limited, use separately a kind of weed killer herbicide single dose can not control completely effectively the generation of weeds of wheat, moreover some weed killer herbicide all easily cause the residual hazard to this season crop or succession crop because the field lasting period is oversize, consumption is excessive or dispenser is inhomogeneous.Therefore, the present invention selects herbicide spectrum different, herbicide is made into mixture use after composing complementary procarbazone and two kinds of suitable decrements of weed killer herbicide of clodinafop-propargyl, so both expanded herbicide spectrum, obviously improve herbicidal effect, also avoided this season to make deposits yields poisoning and the possibility to succession crop generation residual hazard.
Summary of the invention
The object of this invention is to provide a kind of mixed herbicide containing clodinafop-propargyl and procarbazone.
Another object of the present invention is to provide the application of this weed killer herbicide in wheat paddock weeding.
A kind of mixed herbicide containing clodinafop-propargyl and procarbazone, it is characterized in that it is main active ingredient that this weed killer herbicide be take clodinafop-propargyl and procarbazone, the mass ratio of clodinafop-propargyl and procarbazone is 1:4～18, in above-mentioned mixed herbicide, the two quality percentage composition in described mixed herbicide of clodinafop-propargyl and procarbazone is 16～88%.
In the binary built preparation of procarbazone of the present invention and clodinafop-propargyl, except the active ingredients such as procarbazone and clodinafop-propargyl, can also add the auxiliary agents such as conventional surfactants, thickener, solvent or solid packing that allow on pesticidal preparations and be mixed with any one formulation allowing on agricultural chemicals.Preferably be processed into soluble liquid, dry outstanding agent, water dispersion granule, wetting powder etc.
Mixed herbicide of the present invention can be applied in wheat paddock postemergence weed control, and particularly in preventing and kill off wheat paddock, in various grass family and broad leaved weed, application has remarkable result.
Herbicidal composition of the present invention has the following advantages:
1, activity of weeding is high.Clodinafop-propargyl phenoxy carboxylic acid is the fluorine-containing high-efficiency low-toxicity weed killer herbicide of chirality, and procarbazone is side chain amino acid synthetic inhibitor, suppresses the biosynthesis of valine and isoleucine, thereby stops the cell division of plant.That is to say, herbicidal composition of the present invention can kill weeds by two kinds of different approaches, can greatly improve the removing activity of weed killer herbicide.
2, herbicidal spectrum is wide, and the lasting period is long.After clodinafop-propargyl is mixed with procarbazone, action compensating, herbicidal spectrum is wider.
3, delay Weed Resistance.Because single long-term a large amount of weed killer herbicides that use easily produce resistance, and the present invention is two kinds of two kinds of complementary herbicide mixtures of herbicide spectrum, in addition, has reduced the pesticide resistance of weeds, has extended the service life of medicament.
4, safe.Herbicidal composition of the present invention, is applied to wheat paddock weeding, and it can prevent and kill off various grass family and broad leaved weed in wheat paddock, is improving under the prerequisite of drug effect, and wheat and succession crop are all had to safety.
Therefore, mixed herbicide of the present invention can be applied in the weed killer herbicide of preparing wheat paddock postemergence weed control, particularly in preventing and kill off wheat paddock, in various grass family and broad leaved weed, applies.
Specific embodiments
Embodiment 1
Procarbazone 3%, clodinafop-propargyl 12%, alkylphenol polyoxyethylene (NP-10, mean molecule quantity 600) 4%, polyoxyethylene polyoxypropylene block compound (mean molecule quantity 500～2000) 5%, thickener (cellulose ether or derivatives thereof) 2%, adds vegetable oil to 100%, according to conventional formulation method, adds the oil-suspending agent that quality percentage composition that water is mixed with mixed herbicide is 16%.
Embodiment 2
Procarbazone 2%, clodinafop-propargyl 20%, NN0(di-2-ethylhexylphosphine oxide bitter edible plant sodium sulfonate, Shangyu Zhe Chuan Chemical Co., Ltd. provides) 9%, alkylphenol polyoxyethylene 5%, add sodium lignin sulfonate (Zhejiang Jiu Zhou Chemical Engineering Technology Co., Ltd provides) to 100%, according to the dry outstanding agent that to be mixed with the quality percentage composition of mixed herbicide be 25% of conventional formulation method.
Embodiment 3
Procarbazone 7%, clodinafop-propargyl 35%, sodium lignin sulfonate 7%, neopelex 5%, ammonium sulfate 5%, adds diatomite and supplies 100%, and according to conventional formulation method, to be mixed with the quality percentage composition of mixed herbicide be 88% dispersibles granule.
Embodiment 4
Procarbazone 5%, clodinafop-propargyl 30%, NNO(di-2-ethylhexylphosphine oxide bitter edible plant sodium sulfonate) 6%, sodium lignin sulfonate 5%, white carbon 9%, adds kaolin and supplies 100%, according to conventional formulation method, is mixed with the wetting powder that the quality percentage composition of mixed herbicide is 62%.
Embodiment 5
Procarbazone 10%, clodinafop-propargyl 60%, NNO(di-2-ethylhexylphosphine oxide bitter edible plant sodium sulfonate) 6%, sodium lignin sulfonate 4%, white carbon 9%, kaolin supplies 100%, according to conventional formulation method, is mixed with the wetting powder that the quality percentage composition of mixed herbicide is 80%.
Embodiment 6
Procarbazone 1%, clodinafop-propargyl 18%, NNO(di-2-ethylhexylphosphine oxide bitter edible plant sodium sulfonate) 9%, alkylphenol polyoxyethylene 5%, adds sodium lignin sulfonate to 100%, according to conventional formulation method, is mixed with the dry outstanding agent that the quality percentage composition of mixed herbicide is 25%.
Embodiment 7
Toxicity determination test
Utilize the preparation in embodiment 1～4, measure its co-toxicity coefficient to wheat paddock common weed amur foxtail.
Test method: the seed of quantitative amur foxtail is seeded in respectively in the Disposable paper cup of 9cm, sows 10～15 seeds in every glass, cultivate in illumination box, until annual bluegrass 3～6 leaves during the phase, in the crawler type processing of doing to spray on composition spray.After processing, in greenhouse, continue cultivation, each processes the preventive effect to weeds routine observation, weighs the weeds fresh weight after each processing after 30d, by the method that the nineteen sixties such as Sun Yunpei propose, calculates its toxicity regression curve and co-toxicity coefficient.Co-toxicity coefficient is greater than 100, shows that two kinds of active principles have synergistic effect, and co-toxicity coefficient is less than 100, shows that two 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 two kinds of active principles are composite is all greater than 100, illustrates that the present invention has obvious synergistic effect.
Field control effectiveness test
Reagent agent:
Re-compounded binary herbicide in embodiment 1～4 4.
Contrast medicament:
70% procarbazone WP(is commercially available), 15% clodinafop-propargyl WP(is commercially available).
For studying thing: wheat
Wheat seedling was 3～5 leaf phases, grew fine, and robust plant, without other damage by disease and insect.
Prevent and kill off object:
The wheat paddock advantage weeds such as mouse tail amur foxtail, wild oat, perennial ryegrass, clearvers, corn-bind, lamb's-quarters, ox chickweed, common vetch.
Test method:
According to the area of experimental plot, accurately weigh good various medicaments, and be watered after dilution, utilize knapsack sprayer, carry out even spraying, the Fan spray head of sprinkler selection weed killer herbicide special use.During spraying, note liquid evenly to spray application in experimental plot the phenomenon of accomplishing there is no drain spray, spraying more.
After test, after medicine, 10d, 40d observe weeds death condition respectively, and the activity of weeding of more various medicaments.In addition, also to after medicine, in 1～15d, observe the condition of production of crop, to investigate medicament, whether crop be had to poisoning.
The embodiments of the invention preparation weeding test effect 10d after 2(medicine that sees the following form) 40d and after table 3(medicine)
Table 2 field control effectiveness test result (10d after medicine)
Table 3 field control effectiveness test result (40d after medicine)
From table 2 and table 3, can find out, the present invention has significant preventive effect to grassy weed and broad leaved weed, and effect is significantly better than single dose to be used, and the lasting period is long.
The security survey result of table 4 medicament to crop
Each wheat of processing in community grows fine, and has no any medicine spot, illustrates that various medicaments are to the equal safety of wheat.
Claims (7)
1. containing a mixed herbicide for clodinafop-propargyl and procarbazone, it is characterized in that: it is main active ingredient that described weed killer herbicide be take clodinafop-propargyl and procarbazone, and the mass ratio of clodinafop-propargyl and procarbazone is 1:4～18.
2. mixed herbicide according to claim 1, is characterized in that it be take clodinafop-propargyl and procarbazone as main active ingredient and adds the auxiliary agent allowing on agricultural chemicals to be mixed with any one formulation.
3. mixed herbicide according to claim 2, is characterized in that: add the auxiliary agents such as conventional surfactants, thickener, solvent or solid packing that allow on pesticidal preparations and be mixed with any one formulation allowing on agricultural chemicals.
4. according to the mixed herbicide described in claim 3, it is characterized in that described formulation is oil-suspending agent, dry outstanding agent, water dispersion granule or wetting powder.
5. according to the arbitrary described mixed herbicide of claim 1-4, it is characterized in that: the two quality percentage composition in described mixed herbicide of described clodinafop-propargyl and procarbazone is 16～88%
6. the application of mixed herbicide claimed in claim 1 in wheat paddock postemergence weed control.
7. mixed herbicide claimed in claim 1 application in various grass family and broad leaved weed in preventing and kill off wheat paddock.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104222134A (en) * | 2014-09-11 | 2014-12-24 | 河南中天恒信生物化学科技有限公司 | Weeding composition containing flucarbazone-sodium, clodinafop acid and tribenuron-methyl, and application thereof |
| CN105010374A (en) * | 2015-07-25 | 2015-11-04 | 海利尔药业集团股份有限公司 | Weeding composition containing tribenuron methyl |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104222134A (en) * | 2014-09-11 | 2014-12-24 | 河南中天恒信生物化学科技有限公司 | Weeding composition containing flucarbazone-sodium, clodinafop acid and tribenuron-methyl, and application thereof |
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| CN105010374A (en) * | 2015-07-25 | 2015-11-04 | 海利尔药业集团股份有限公司 | Weeding composition containing tribenuron methyl |
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