CN102405924A - Pesticide composition comprising bensulfuronmethyl and pendimethalin - Google Patents
Pesticide composition comprising bensulfuronmethyl and pendimethalin Download PDFInfo
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- CN102405924A CN102405924A CN2011103656786A CN201110365678A CN102405924A CN 102405924 A CN102405924 A CN 102405924A CN 2011103656786 A CN2011103656786 A CN 2011103656786A CN 201110365678 A CN201110365678 A CN 201110365678A CN 102405924 A CN102405924 A CN 102405924A
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- pendimethalin
- methyl
- bensulfuron
- bensulfuronmethyl
- composition pesticide
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Abstract
The invention discloses a pesticide composition comprising bensulfuronmethyl and pendimethalin. The active constituents of the pesticide composition are bensulfuronmethyl and pendimethalin, and the ratio of bensulfuronmethyl to pendimethalin is (20:1) to (1:30) in parts by weight, preferably (10:1) to (1:20); and bensulfuronmethyl and pendimethalin after combination have obvious synergetic effect, and the use amount of the active constituent of a combined medicament is obviously reduced than exclusive use of bensulfuronmethyl and pendimethalin. The pesticide composition provided by the invention is suitable for preventing annual weeds of dry ricenursery fields of rice.
Description
Technical field
The composition pesticide that the present invention relates to is to be effective ingredient with bensulfuron-methyl and pendimethalin, is used to prevent and kill off paddy drought seedling field annual weed.
Background technology
The chemical method weeding is that agricultural goes up one of main means of controlling weeds.In recent years, because some weed killer herbicide kind large tracts of land are used separately, caused a lot of weeds to develop immunity to drugs.Simultaneously, the grass when weeds are taken place is complicated mutually, and not only annual mixing with perennial weed given birth to, and draft, liana and shrub have concurrently, and weeds emerge uneven, low age, the staggered generation of weeds at advanced age; So when the weed killer herbicide kind is used separately, all can show in a certain respect defective and limitation.
Bensulfuron-methyl (bensulfuron-methyl) is a selectivity inner sucting conduction type weed killer herbicide.Active ingredient can be in water diffusion rapidly, transfer to each one of weeds for the weeds root absorbs with blade, the biosynthesis of hindered aminoacid, lysine, isoleucine, the division and the growth of prevention cell.The susceptible weeds GF is obstructed, and tender tissue turns to be yellow too early and suppresses the growth of leaf portion, hinders root growth and necrosis.It is harmless inertia chemicals that active ingredient gets into the interior metabolism rapidly of paddy rice body, to rice safety.Method for using is flexible, available pesticide-clay mixture, mispickel, spraying, sprinkles method such as water.Mobility is little in soil, and temperature, soil property influence little to its herbicidal effect.
Pendimethalin (pendimethalin) mainly suppresses meristematic cell division, does not influence the sprouting of weed seed, but in the suppressing weed seed germination process behind young shoot, stem and the root absorption medicament and work.The dicotyledon absorption site is a hypocotyl, and monocotyledon is a young shoot, and its symptom of being injured is that young shoot and secondary root are suppressed.
Being mixed of different pesticide species is the common methods of the agriculture resistance disease pest and weed of control.Through the formulation of pesticide screening, filter out rational prescription, can effectively improve actual control efficiency, reduce dosage, reduce cost, delay the drug-fast generation of disease pest and weed, be the important means that agricultural synthesis is administered.The inventor furthers investigate the prescription screening of bensulfuron-methyl and pendimethalin, finds that bensulfuron-methyl and pendimethalin are mixed, and in certain mixed ratio scope weeds is had obvious synergistic effect, through further research, has accomplished the present invention.
Summary of the invention
Technical problem to be solved: the objective of the invention is to solve the problem that weeds develop immunity to drugs and actual control efficiency is relatively poor in the prior art; A kind of efficient, low toxicity is provided, quick-acting is good and the lasting period is long, helps the composition pesticide of the weeds comprehensive regulation.
Another object of the present invention provides this composition pesticide is used to prevent and kill off paddy drought seedling field annual weed.
Technical scheme: with bensulfuron-methyl and pendimethalin is active ingredient, and the ratio of weight and number of bensulfuron-methyl and pendimethalin is 20:1～1:30, and preferably than being 10:1～1:20, all the other are to allow in the agricultural chemicals to use and the acceptable auxiliary element.
Composition pesticide of the present invention adopts known method, selects suitable insecticides adjuvant for use, is prepared into to be fit to upward following formulation of agricultural: aqueous emulsion, suspending agent, wetting powder, water dispersible granules.
The auxiliary agent that uses in the composition pesticide of the present invention comprises that solvent, emulsifier, wetting agent, stabilizing agent, dispersant, thickener, PH conditioning agent, antifoaming agent, antifreezing agent, packing agent etc. are of value to active ingredient stablizes and bring into play drug effect in preparation known substance; All be the various compositions of using or allow use in the pesticidal preparations always, concrete composition and consumption are confirmed through testing according to the prescription requirement.
The production technology of the various application forms of composition pesticide of the present invention all belongs to existing known technology, repeats no more at this.
Composition pesticide described in the invention can finished product preparation form provide, promptly each material mixes in the composition, the form that the composition of composition also can single agent provides, and directly in jar or bucket, mixes before the use, is diluted to needed concentration then.The frequency of administration of the present composition and amount of application change with weather conditions and weeds situation, can reach the purpose of preventing and kill off through using suitable dosage.
Composition pesticide of the present invention is applicable to prevents and kill off paddy drought seedling field annual weed.
Composition pesticide provided by the invention, the method that adopts the soil spraying to handle is usually used, and also can adopt agricultural to go up other operation techniques of using as required.
Compared with prior art, the invention has the advantages that.
1, composition pesticide provided by the invention; In certain ratio range, show obvious synergistic effect; The control efficiency of composition is significantly improved than single agent, has reduced the using dosage of agricultural chemicals, has reduced the medication number of times; Reduced drug cost, reduced the adverse effect of agricultural chemicals ecotope.
2, composition pesticide provided by the invention, the combination of two kinds of active ingredients has enlarged herbicidal spectrum, and a drug can solve various weeds problems, defective and limitation when having remedied single agent and using.
3, composition pesticide provided by the invention, two kinds of active ingredient mechanism of action have nothing in common with each other, and can overcome the shortcoming that long-term single use is easy to generate resistance, prolong the service life of medicament, and the comprehensive regulation of weeds resistance is had significance.
Embodiment
The present invention describes through following specific embodiment, but the invention is not restricted to following specific embodiment.In these embodiment, unless otherwise indicated, all percentages all are weight percentage.
Biologicall test embodiment 1:Bensulfuron-methyl and pendimethalin are used with the synergy of weeds are measured.
Test material: chickweed [
Stellaria media(L.) Cyrillus] (field is collected seed and is preserved).
The barnyard grass grass [
Echinochloa crusgalli(L.) Beaw Setaria] (field is collected seed and is preserved).
Test apparatus: controlled illumination box; The accurate laboratory of POTTER spray tower; Electronic balance (sensibility reciprocal 0.1mg); Micropipette rifle etc.
Test method: the former medicine of 96% bensulfuron-methyl that takes by weighing certain mass earlier; The former medicine of 95% pendimethalin, the Tween 80 aqueous solution with 0.1% after adding acetone fully dissolves dilutes, and is mixed with single agent mother liquor respectively; According to the purpose that is mixed serial proportioning is set, each proportioning is provided with 5～7 concentration gradients.Killing the grass spectrum according to single agent selects representative susceptible weeds seed subsequent use.After the processing of selecting numbering carried out soil treatment, be placed in the illumination box incubated at room temperature 10 days, calculate control efficiency (fresh weight), then with method of least squares calculate suppress in dense EC
50(95% confidence limit) is calculated co-toxicity coefficient (CTC) with the abundant method of Sun Yun again.
Co-toxicity coefficient (CTC)>=120 shows as synergistic effect; Co-toxicity coefficient (CTC)≤80 shows as antagonism; 80＜co-toxicity coefficient (CTC)＜120 shows as summation action.
Actual measurement toxicity index (ATI)=(standard medicament EC
50/ confession reagent agent EC
50) * 100.
Theoretical toxicity index (TTI)=(percentage composition of A in toxicity index * mixture of A)+(percentage composition of B in toxicity index * mixture of B).
Co-toxicity coefficient (CTC)=[mixture actual measurement toxicity index (the ATI)/theoretical toxicity index (TTI) of mixture] * 100.
Result of the test is seen table 1, table 2.Bensulfuron-methyl and pendimethalin have obvious synergistic effect between ratio of weight and number 20:1～1:30, especially between 10:1～1:20, synergistic effect is more obvious, and co-toxicity coefficient is more than 140.
The different proportionings of table 1, bensulfuron-methyl and pendimethalin are measured the synergy of barnyard grass grass.
The different proportionings of table 2, bensulfuron-methyl and pendimethalin are measured the synergy of chickweed.
FORMULATION EXAMPLE 1: 18% bensulfuron-methyl pendimethalin wetting powder.
Bensulfuron-methyl 3%, pendimethalin 15% draws back powder 7%, dispersant NNO 12%, talcum powder 4%, kaolin complements to 100%.
Above-mentioned prescription got in the blender after the coarse crushing in proportion mix, behind comminution by gas stream, promptly make 18% bensulfuron-methyl pendimethalin wetting powder again.
FORMULATION EXAMPLE 2:20% bensulfuron-methyl pendimethalin suspending agent.
Bensulfuron-methyl 5%, pendimethalin 15%, emulsifier 1601# 15%, wetting agent LS 8%,
Dispersant SOPA-270 10%, bentonite 2%, xanthans 0.3%, organosilicon 0.7%, glycerine 9%, deionized water complements to 100%.
Above-mentioned prescription is pulverized in proportion in advance, added in the sand mill and grind, allotment makes 20% bensulfuron-methyl pendimethalin suspending agent after high shear mixing.
FORMULATION EXAMPLE 3: 20% bensulfuron-methyl pendimethalin water dispersible granules.
Bensulfuron-methyl 5%, pendimethalin 15%, lauryl sodium sulfate 10%, polycarboxylate 5%,
Sodium chloride 6%, polyethylene glycol 4%, kaolin complements to 100%.
Dry pulverization process, granulation, drying, screening make 20% bensulfuron-methyl pendimethalin water-dispersible granules in proportion with above-mentioned prescription.
FORMULATION EXAMPLE 4:15% bensulfuron-methyl pendimethalin aqueous emulsion.
Bensulfuron-methyl 3%, pendimethalin 12%, N-Methyl pyrrolidone 12%, neopelex 8%, polyvinyl alcohol 4%, emulsifier 500# 7%, organosilicon 0.9%, deionized water complements to 100%.
Above-mentioned prescription Central Plains medicine, solvent, emulsifiers dissolve are become even oil phase; With the mixed water that gets of water-soluble component and deionized water in the above-mentioned prescription; Under high-speed stirred, with oil phase and the mixed 15% bensulfuron-methyl pendimethalin aqueous emulsion that gets of water.
FORMULATION EXAMPLE 5: 15% bensulfuron-methyl pendimethalin suspending agent.
Bensulfuron-methyl 5%, pendimethalin 10%, vegetable oil 30%, organobentonite 3%, methylated vegetable oil complements to 100%.
Above-mentioned prescription Central Plains medicine, solvent, emulsifiers dissolve are become even oil phase; Under high-speed stirred, the mixed 15% bensulfuron-methyl pendimethalin oil-suspending agent that gets.
Field efficacy embodiment 1: bensulfuron-methyl and pendimethalin are mixed and prevent and kill off paddy drought seedling field annual weed field control effectiveness test.
Supply the reagent agent: (1) 18% bensulfuron-methyl pendimethalin wetting powder (FORMULATION EXAMPLE 1).
(2) 20% bensulfuron-methyl pendimethalin suspending agents (FORMULATION EXAMPLE 2).
(3) 20% bensulfuron-methyl pendimethalin water dispersible granules (FORMULATION EXAMPLE 3).
(4) 15% bensulfuron-methyl pendimethalin aqueous emulsions (FORMULATION EXAMPLE 4).
(5) 15% bensulfuron-methyl pendimethalin oil-suspending agents (FORMULATION EXAMPLE 5).
(6) 10% bensulfuron-methyl wetting powders (contrasting single agent).
(7) 15% pendimethalin missible oil (contrasting single agent).
Dispenser period: the soil spraying is handled before broadcasting.Dispenser dosage and result of the test are seen table 3.
Can find out that from result of the test the composite back synergy of bensulfuron-methyl and pendimethalin is obvious, composition pesticide of the present invention is prevented and kill off paddy drought seedling field annual weed drug effect and obviously is superior to contrasting single agent.Because pharmacy control efficacy improves, the compound drug effective ingredient consumption reduces, and has enlarged to kill the grass spectrum, has reduced drug cost, delays the generation of disease drug resistance, has reduced environmental pollution.
Table 3, bensulfuron-methyl and pendimethalin are mixed to the preventive effect of paddy drought seedling field annual weed:
Claims (4)
1. a composition pesticide that contains bensulfuron-methyl and pendimethalin is characterized in that active ingredient is bensulfuron-methyl and pendimethalin, and the ratio of weight and number of bensulfuron-methyl and pendimethalin is 20:1～1:30.
2. a kind of composition pesticide that contains bensulfuron-methyl and pendimethalin according to claim 1 is characterized in that the preferred weight portion rate of bensulfuron-methyl and pendimethalin is 10:1～1:20.
3. a kind of composition pesticide that contains bensulfuron-methyl and pendimethalin according to claim 1 and 2 is characterized in that, its formulation is a kind of in aqueous emulsion, suspending agent, wetting powder or the water dispersible granules.
4. a kind of composition pesticide that contains bensulfuron-methyl and pendimethalin according to claim 1 and 2 is characterized in that being used to prevent and kill off paddy drought seedling field annual weed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103656786A CN102405924A (en) | 2011-11-17 | 2011-11-17 | Pesticide composition comprising bensulfuronmethyl and pendimethalin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103656786A CN102405924A (en) | 2011-11-17 | 2011-11-17 | Pesticide composition comprising bensulfuronmethyl and pendimethalin |
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| Publication Number | Publication Date |
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| CN102405924A true CN102405924A (en) | 2012-04-11 |
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ID=45908491
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103656786A Pending CN102405924A (en) | 2011-11-17 | 2011-11-17 | Pesticide composition comprising bensulfuronmethyl and pendimethalin |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104396999A (en) * | 2014-11-30 | 2015-03-11 | 南京华洲药业有限公司 | Mixed weedicide containing flazasulfuron, bensulfuron and pendimethalin |
| CN115336589A (en) * | 2022-08-19 | 2022-11-15 | 南通江山农药化工股份有限公司 | High-efficiency weeding composition for preventing and removing weeds in paddy fields and preparation thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000003592A2 (en) * | 1998-07-16 | 2000-01-27 | Aventis Cropscience Gnbh | Herbicidal agents with substituted phenoxysulfonylureas |
-
2011
- 2011-11-17 CN CN2011103656786A patent/CN102405924A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000003592A2 (en) * | 1998-07-16 | 2000-01-27 | Aventis Cropscience Gnbh | Herbicidal agents with substituted phenoxysulfonylureas |
Non-Patent Citations (3)
| Title |
|---|
| 孙俊铭 等: "17%二甲戊灵·苄嘧磺隆WP 防除直播水稻田杂草药效试验", 《农药》 * |
| 田荣山 等: "16％=甲戊灵．苄嘧磺隆可湿粉防除水稻移栽田杂草药效试验报告", 《新农民（上半月）》 * |
| 陈丽荣 等: "17%烽帮收WP防除直播稻田杂草应用技术试验", 《世界农药》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104396999A (en) * | 2014-11-30 | 2015-03-11 | 南京华洲药业有限公司 | Mixed weedicide containing flazasulfuron, bensulfuron and pendimethalin |
| CN115336589A (en) * | 2022-08-19 | 2022-11-15 | 南通江山农药化工股份有限公司 | High-efficiency weeding composition for preventing and removing weeds in paddy fields and preparation thereof |
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Application publication date: 20120411 |