CN102805100B - Herbicide capable of reducing resistance of glyphosate - Google Patents
Herbicide capable of reducing resistance of glyphosate Download PDFInfo
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- CN102805100B CN102805100B CN201210292546.XA CN201210292546A CN102805100B CN 102805100 B CN102805100 B CN 102805100B CN 201210292546 A CN201210292546 A CN 201210292546A CN 102805100 B CN102805100 B CN 102805100B
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Abstract
The invention relates to a herbicide capable of reducing the resistance of glyphosate. The herbicide comprises an effective component, namely a mixture obtained after the glyphosate is mixed with fluoroglycofen-ethyl at a weight ratio of (20-80) : (0.5-4), and further comprises pesticide additives with a weight percentage of 10 to 25 percent, wherein the pesticide additives comprise two or more of emulsifying agents, dispersing agents, wetting agents, filler, thickening agents, defoaming agents and stabilizing agents according to patent medicine dosage forms. The herbicide has the advantages that through compounding two herbicides, a synergistic effect is produced, a better herbicidal effect is achieved, certain malignant weeds can be well controlled and a weed control spectrum is expanded; and meanwhile, through compounding the herbicides, the use amount can be reduced and the weeds are contacted with different herbicides, thereby slowing down the production of herbicide resistance of the weeds.
Description
Technical field:
The present invention relates to a kind of chemical pesticide, particularly reduce the weed killer herbicide of glyphosate resistance.
Background technology:
Glyphosate: (glyphosate), be the weed killer herbicide of being developed by About Monsanto Chemicals.Claim again: glyphosate, agriculture reach (Roundup), careless dry phosphine, the sweet acid of phosphine.The sweet ammonia of chemical name N-((phosphonomethyl)), molecular formula: (HO)
2p (O) CH
2nHCH
2cOOH, structural formula
Glyphosate technicals content is generally 95-98%, and glyphosate technicals is white solid, water insoluble, but and the alkali substance reaction salify such as isopropylamine afterwards water-soluble fine.On market, 41% most widely used gyphosate solution is exactly the aqua that glyphosate isopropyl amine salt is made now, and its glyphosate content is 30%, and isopropyl amine salt content is 41%, and the mother liquor of use is generally 62% glyphosate isopropyl amine salt mother liquor.
Glyphosate is the chronic wide spectrum steriland herbicide of inner sucting conduction type, the main interior enol acetonyl shikimene phosphate synthase of object that suppresses, thereby suppress the conversion of shikimene to phenyl alanine, cruel propylhomoserin and tryptophan, make synthetic being interfered of protein cause plant death.Glyphosate is transmitted to the each position of plant after absorbing by cauline leaf, can prevent and kill off the plant of the sections more than 40 such as unifacial leaf and dicotyledonous, annual and perennial, herbs and shrubs.Glyphosate can be used for preventing and kill off apple orchard, peach garden, vineyard, theatre, tea place, mulberry field and farmland fallow land weeds.After glyphosate buries, be combined and lose activity with the metal ion such as iron, aluminium very soon, seed hiding in soil and edaphon are had no adverse effects.
Fluoroglycofen-ethyl Fluoroglycofen, the chloro-a of chemical name: 0-[5-(2-, a, the fluoro-p-toloxyl of a-tri-)-2-nitro benzoyl] hydroxyl ethyl acetate, molecular formula: C1
6h
9clF
3nO
7, structural formula
Fluoroglycofen-ethyl belongs to diphenyl ether herbicide, is that protoporphyrin is oxidized mould inhibitor, once this product is absorbed by plants, only under illumination condition, just brings into play effect.This compound reacts with mol-chloric, generates the virose compound tetrapyrrole of plant cell tool, gathers and has an effect.In accumulation process, plant cell membrane is disappeared completely, then cause cell inclusion seepage.And then cause plant death.After this product bud, use and prevent and kill off broad leaved weed, required dosage is relatively low.Be applicable to wheat, barley, peanut, soybean and rice field and prevent and kill off broad leaved weed, especially clearvers, Veronica, violet, Xanthium and sweet potato weeds, prevent and kill off grass family or perennial weed is invalid.
Summary of the invention:
The object of the invention is for the generation of glyphosate resistance in recent years, the preventive effect of a lot of broad leaved weeds is started to decline, therefore a kind of weed killer herbicide that reduces glyphosate resistance is provided, herbicidal effect is good, broad weed-killing spectrum.
The technical scheme that the present invention takes is:
Reduce a weed killer herbicide for glyphosate resistance, its active ingredient is the mixture that glyphosate mixes by weight 20～80:0.5～4 with fluoroglycofen-ethyl.
The weed killer herbicide of described reduction glyphosate resistance, the mixture that the preferred glyphosate of its active ingredient mixes by weight 30～75:1～3 with fluoroglycofen-ethyl.
The weed killer herbicide of described reduction glyphosate resistance, its active ingredient mixture that further preferably glyphosate mixes by weight 50～70:1～1.5 with fluoroglycofen-ethyl.
The weed killer herbicide of described reduction glyphosate resistance, its active ingredient mixture that most preferably glyphosate mixes by weight 65.2:1.2 with fluoroglycofen-ethyl.
The weed killer herbicide of above-mentioned reduction glyphosate resistance, also comprise the insecticides adjuvant of percentage by weight 10%-25%, described insecticides adjuvant is according to becoming pharmaceutically dosage form to be selected from two or more in emulsifier, dispersant, wetting agent, filler, thickener, defoamer, stabilizing agent.
Described emulsifier is alkyl glycoside, tallow amine analog assistant, calcium dodecyl benzene sulfonate, lauryl sodium sulfate, phenethyl phenol polyethenoxy ether, phenethyl phenol polyethenoxy ether, polyoxyethylene nonylphenol ether, alkylphenol polyoxyethylene formaldehyde condensation products, fatty alcohol-polyoxyethylene ether, tributyl phenol APEO, phenethyl phenol polyethenoxy ether formaldehyde condensation products, alkylphenol polyoxyethylene phosphate, phenethyl phenol polyethenoxy ether phosphate, one or more in polyethenoxy ether sulphonate,
Described dispersant is single two naphthalene sulfonate, two naphthalenesulfonate formaldehyde condensation compound, naphthalene sulfonic acid-formaldehyde condensation product sodium salt, alkylphenol polyoxyethylene formaldehyde condensation products sulphate or lignosulfonates;
Described wetting agent is sodium alkyl benzene sulfonate, sodium alkyl sulfate, alkyl phenol polyethenoxy ether sodium sulfate, alkylphenol polyoxyethylene condensation product sodium sulfate salt or fatty alcohol-polyoxyethylene ether succinate monoester sodium sulfonate;
Described filler is one or more in potter's clay, attapulgite, kaolin, atlapulgite, diatomite, precipitated calcium carbonate;
Described thickener is xanthans, polyvinyl alcohol, polyvinylpyrrolidone, carboxymethyl cellulose, methylcellulose, carboxyethyl cellulose, gum Arabic, Sodium Polyacrylate, gaseous state silica, aluminium-magnesium silicate or organobentonite;
Described defoamer is long-chain alcohol, polyglycerol, fatty acid or silicone based defoamer; Described stabilizing agent is organic acid, organic base, antioxidant or epoxychloropropane.
The formulation of the weed killer herbicide of above-mentioned reduction glyphosate resistance be aqueous emulsion, soluble liquid, can wet-milling, soluble powder, granule, suspension emulsion or suspending agent, oil-suspending agent; Preferred dosage form is aqueous emulsion.
The preparation method of described aqueous emulsion: first by weight by 0.5～1.5 part, 0.5～3 part of fluoroglycofen-ethyl and antioxidant, 1～4 part of phenethyl phenol polyethenoxy ether phosphate, 1～4 part of alkylphenol polyoxyethylene formaldehyde condensation products and 2～58.9 parts of mixing of water use the speed of 2500-5000 revs/min of the homogeneous clippers of high speed to shear afterwards 20-40 minutes, fully shear evenly, then add 30～70 parts of glyphosate mother solutions, 8～15 parts of tallow amine auxiliary agents, 0.1～0.5 part of continuation of defoamer is sheared 20-40 minutes according to 2500-5000 revs/min of speed, just outward appearance can be formed even, up-to-standard aqueous emulsion.
The invention has the beneficial effects as follows:
(1) composite by between two kinds of weed killer herbicides, produces synergy, and herbicidal effect is better, better to the control efficiency of some malignant weeds, expands herbicide spectrum; Composite by between weed killer herbicide simultaneously, can reduce consumption, and weeds contact different weed killer herbicides, have slowed down the generation of Weed Resistance.
(2) second carboxylic is the highy potent herbicide of the many broad leaved weedses of control, so but majority is to make missible oil product to have very large defect, such as not environmental protection of formulation, uneasy congruence, because the technology barrier that the two composite existence is very large, glyphosate is to make salt to use mostly, and this salt adds and is easy to occur that layering, glyphosate and other active ingredient the phenomenon such as separates out after other former medicine.If be first, fluoroglycofen-ethyl is made to micro emulsion or water and milk, and again this micro emulsion or water and milk and glyphosate isopropyl amine salt are made to very difficult making of water and milk, because salts substances make stable water and milk etc. especially difficulty do, this patent approaches nano particle again by the special screening of different auxiliary agents fineness by cutting into can be made, first fluoroglycofen-ethyl is made to micro emulsion or water and milk, then composite with glyphosate active ingredient (comprising glyphosate technicals and glyphosate isopropyl amine salt, dimethylamine salt etc.), add special auxiliary agent simultaneously, make the preparation that meets national standard.Reach and make the two combination reasonably combined, thus easy to use, more can bring into play the two effect each other.
(3) reduce costs, be beneficial to use: complex weedicide can significantly improve drug effect, reduce effective ingredient consumption, and this composite in containing the higher organic solvent of cost, thereby significantly reduced cost.Both are composite more together, can be directly just passable with a kind of medicine when peasant uses, do not need to buy two kinds of medicines now with the current, reduce cost, facilitate peasant to use.
(4) environmentally friendly: because complex weedicide effect is fine, improved the quick-acting of glyphosate, expanded herbicide spectrum, the lasting period is long, has reduced medication number of times and dosage, and environmental pollution is very little.And what the present invention mainly adopted is the environmental protection formulation of authorized by state, does not use the solvent that the environmental pollutions such as aromatic solvent are larger, environmentally friendly.
Embodiment:
Further illustrate provided complex weedicide by non-limiting embodiment below, these embodiment not delimit the scope of the invention.The glyphosate weight ratio of writing in aqueous emulsion, soluble liquid, suspension emulsion or suspending agent preparation in the present invention refers to the weight of the preparation of 62% glyphosate isopropyl amine salt mother liquor preparation, can wet-milling, soluble powder, granule solid pharmaceutical preparation and oil-suspending agent be the weight of the glyphosate technicals of direct use.
Embodiment 1
Wetting powder
Said components is fully mixed, and after pulverizing through airslide disintegrating mill, formation outward appearance is white solid, even-grained wetting powder.Made feasibility pulvis index is as follows: table 1
| Project | Indication range | Measured value |
| Glyphosate mass fraction | 80 +2 -1 | 80.2 |
| Fluoroglycofen-ethyl | 2±0.5 | 2.0 |
| Moisture/% | ≤3.0 | 0.5 |
| PH scope | 5.0—8.0 | 6.1 |
| Glyphosate suspensibility % | ≥65 | 88 |
| Fluoroglycofen-ethyl suspensibility % | ≥65 | 85 |
| Wetting time, S | ≤120 | 40 |
| Fineness (by 45 μ m testing sieves) | ≥95 | 98 |
| Thermodynamic stability | Qualified | Qualified |
That makes by above formula is can a wet-milling index good, meets national standard.
Embodiment 2
Oil-suspending agent
First auxiliary agent, active ingredient, auxiliary material, plant wet goods are fully mixed, then shear by high speed shear, then carry out sand milling with sand mill, form the uniform oil-suspending agent of outward appearance.Table 2
Above index can be found out, the oil-suspending agent of being prepared by embodiment 2, and each index is good, meets country to oil-suspending agent required standard.
Embodiment 3
Aqueous emulsion
Note: what this aqueous emulsion glyphosate was used is 62% glyphosate isopropyl amine salt mother liquor (content that is converted into glyphosate technicals is 46%), so the content of glyphosate active ingredient is 30% in this aqueous emulsion.
First 17.3 parts, 1.2 parts of fluoroglycofen-ethyls and 1 part, antioxidant, 2 parts of phenethyl phenol polyethenoxy ether phosphates, 2 parts of alkylphenol polyoxyethylene formaldehyde condensation products and water is mixed afterwards and fully sheared evenly with the homogeneous clipper of high speed, then add 65.2 parts of glyphosates, 11 parts of tallow amine auxiliary agents, 0.3 part of continuation of defoamer to shear, just can form even, the up-to-standard aqueous emulsion of outward appearance.
Table 3
Found out by table 3, each index of aqueous emulsion all meets standard, and each index is good.
Effect test
In order to check proportioning and the effect of complex weedicide provided by the present invention, we entrust medicine inspecting institute of Shandong Province to carry out the efficiency test of lab simulation land for growing field crops main weeds lady's-grass, field bindweed, field thistle, barnyard grass:
1. materials and methods
1.1 reagent agent
The every 100g aqua of A 30%(is containing 30g glyphosate active ingredient) gyphosate solution (agriculture reaches, and Meng Shan produces)
B 10%(m/m) fluoroglycofen-ethyl missible oil
C embodiment 3 gained preparations
D embodiment 1 gained preparation.
1.2 for examination weeds
Main weeds is lady's-grass, green foxtail, Amaranthus retroflexus, humulus grass, separately has a small amount of kitchen garden, piemarker, eleusine indica etc., because of negligible amounts, not as experimental observation object.
1.3 test dose designs
Single dose: A 30% gyphosate solution 450g(a.i)/hm
2(agriculture reaches, About Monsanto Chemicals)
B 10% fluoroglycofen-ethyl missible oil 15g(a.i)/hm
2(Fu Kuo, Jinan Lv Bang Chemical Co., Ltd.)
C1 30% glyphosate 1% fluoroglycofen-ethyl aqueous emulsion 450g(a.i)/hm
2+ 15g(a.i)/hm
2(be composite good preparation 1500g/hm for per hectare
2) (product prepared by embodiment 3)
C2 30% glyphosate 1% fluoroglycofen-ethyl aqueous emulsion 900g(a.i)/hm
2+ 30g(a.i)/hm
2(be composite good aqueous emulsion 3000g/hm for per hectare
2) (product prepared by embodiment 3)
E 60% glyphosate 2.5% fluoroglycofen-ethyl wetting powder 450g(a.i)/hm
2+ 15g(a.i)/hm
2(be per hectare with composite well can wet-milling 1500g/hm
2) (product prepared by embodiment 1)
F blank
1.4 tests are processed and method
Test is a discarded wasteland factory outside, and June 10 went and buy Chinese medicine, and laxative period is the weed growth most productive period, grassy weed plant height 20-40cm, broad leaved weed 40cm.Spraying equipment is 15Kg knapsack sprayer, even spraying.Blank is set, and 6 processing are established in test, in triplicate, amount to 18Ge community, community area 20m
2, randomized arrangement, each treatment agent and clear water contrast according to every mu 30 kilograms of sprayings of water.
1.5 investigation method
After medicine, the preventive effect of medicament to weeds managed in range estimation in 7 days, 14 days everywhere, investigation weeds strain number.Investigate every community and get at random 4 points, every some 0.25m
2, totally 1 square metre, the weeds strain number of investigation survival, calculates plant preventive effect.
Preventive effect computational methods:
Preventive effect/%=(blank district weeds-treatment region weeds)/weeds × 100, blank district
2. results and analysis:
2.1 each test medicine quick-acting are analyzed
The quick-acting of glyphosate own is poor, found out by table 1, in the time of 7 days, A glyphosate single dose to the preventive effect of lady's-grass, green foxtail, Amaranthus retroflexus in 60% left and right, more weaker to the preventive effect of humulus grass, only have 40%; B fluoroglycofen-ethyl single dose there is not effect substantially to the grassy weed such as lady's-grass, green foxtail, and better than glyphosate single dose to Amaranthus retroflexus, humulus grass effect, 70%, quick-acting is better; C1 complex weedicide will improve 7% to the effect of broad leaved weed than the independent use of B; Under Isodose, two kinds of formulation complex weedicide C1, D are not very large to the preventive effect difference of four kinds of weeds, and the quick-acting of C2 is preferably in more than 80%.
2.2 each medicament lasting effects are analyzed
In observation table 1,14 days results can be found out, A glyphosate single dose to the preventive effect of lady's-grass, green foxtail, Amaranthus retroflexus in 90% left and right, more weaker to the preventive effect of humulus grass, only have 70%; B fluoroglycofen-ethyl single dose there is not effect substantially to the grassy weed such as lady's-grass, green foxtail, more much better than glyphosate single dose to Amaranthus retroflexus, humulus grass effect; It is not very large to the preventive effect difference of four kinds of weeds that C1 complex weedicide will improve 10%, C1, D to the effect of broad leaved weed than the independent use of B, and C2 preventive effect is best, and 100%, weeds are all dead.
2.3 composite reasonableness tests
Can be found out by result, glyphosate quick-acting is poor, and poorer than other three kinds grass to humulus grass preventive effect, fluoroglycofen-ethyl is better to broadleaved herb effect, and quick-acting is good, and it is more reasonable that both carry out Burden, expands herbicide spectrum, improves quick-acting, reduces consumption, reduced cost.Can be found out by C1.C2, same medicament, usage amount increases, and drug effect also can improve, and these two are processed 14 days is all 100% to Amaranthus retroflexus preventive effect, is 90-100% to the preventive effect of other three kinds of weeds, and these two proportioning effects are all fine; Can be found out by C1.D, same proportioning, between different dosage form, preventive effect difference is not too large, the effect of aqueous emulsion is than can wet-milling effect slightly good generally.
3. conclusion
Whether this experiment is under field conditions (factors), on a slice wasteland, carries out, and different medicaments have been carried out to effect test, reasonable with the composite and compound proportion of two kinds of active ingredients in comparison the present invention.Experimental result shows, carries out compositely between glyphosate and fluoroglycofen-ethyl, and between different proportionings, drug effect is all fine, have complementary advantages between the two, improved quick-acting, have the broad leaved weed of resistance effective for some to glyphosate, expand herbicide spectrum, reduced consumption and cost.
Table 1 is tested the effect of management of weeds
Claims (1)
1. a weed killer herbicide that reduces glyphosate resistance, is characterized in that,
Its formulation is aqueous emulsion, first by weight 2～58.9 parts, 0.5～3 part of fluoroglycofen-ethyl and 0.5～1.5 part, antioxidant, 1～4 part of phenethyl phenol polyethenoxy ether phosphate, 1～4 part of alkylphenol polyoxyethylene formaldehyde condensation products and water is mixed and uses afterwards the speed of 2500-5000 revs/min of the homogeneous clippers of high speed to shear 20-40 minutes, fully shear evenly, then add 30～70 parts of glyphosate mother solutions, 8～15 parts of tallow amine auxiliary agents, 0.1～0.5 part of continuation of defoamer to shear 20-40 minutes according to 2500-5000 revs/min of speed.
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| CN111109252B (en) * | 2020-01-16 | 2022-03-08 | 广东省科学院产业技术育成中心 | Pesticide adjuvant and preparation method thereof |
| CN111642502A (en) * | 2020-05-06 | 2020-09-11 | 南京威尔生物科技有限公司 | Auxiliary agent and method for preparing glyphosate + ethylcarboxyl microemulsion by using same |
| CN111657296A (en) * | 2020-06-19 | 2020-09-15 | 合肥科奥生物科技有限公司 | Weeding composition containing glufosinate-ammonium |
| CN111602666A (en) * | 2020-06-19 | 2020-09-01 | 合肥科奥生物科技有限公司 | Weeding composition containing glyphosate |
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Address after: 250208 Shandong city of Ji'nan province Zhangqiu city water Zhai Zhen Shui Nan Cun Patentee after: SHANDONG LVBANG CROP SCIENCE CO., LTD. Address before: 250208 Shandong city of Ji'nan province Zhangqiu city water Zhai Zhen Shui Nan Cun Patentee before: Jinan Leeder Chemical Co., Ltd. |