CN103120173B - Herbicidal composition for rice field - Google Patents

Herbicidal composition for rice field Download PDF

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CN103120173B
CN103120173B CN201310043175.6A CN201310043175A CN103120173B CN 103120173 B CN103120173 B CN 103120173B CN 201310043175 A CN201310043175 A CN 201310043175A CN 103120173 B CN103120173 B CN 103120173B
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methyl
bensulfuron
butyl
cyhalofop
penoxsuam
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CN103120173A (en
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孟宪秋
陈佛祥
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Hu'nan Agricultural University Heartale Agrochemicals Co., Ltd.
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Guangdong Zhongxun Agri Science Corp
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Abstract

The invention discloses a kind of Herbicidal composition for rice field, active ingredient is bensulfuron-methyl, penoxsuam, cyhalofop-butyl.Bensulfuron-methyl percentage by weight is in the composition 1% ~ 10%, and penoxsuam percentage by weight is in the composition 1% ~ 10%, cyhalofop-butyl percentage by weight is in the composition 1% ~ 15%, and all the other are insecticides adjuvant.The invention has the advantages that the composite rear raising herbicidal effect of bensulfuron-methyl, penoxsuam, cyhalofop-butyl, expand herbicide spectrum, low toxicity, low-residual, and significantly reduce dosage, times for spraying and use cost, composition effect, apparently higher than each single dose, is the good new compositions medicament of current water prevention rice field annual weed.

Description

Herbicidal composition for rice field
Technical field
The present invention relates to a kind of Herbicidal composition for rice field, is with bensulfuron-methyl, penoxsuam and cyhalofop-butyl for active ingredient, for water prevention rice field annual weed.
Background technology
Chemical method weeding is agriculturally one of Main Means controlling weeds.In recent years, because some weed killer herbicide kind large area are used alone, a lot of weeds have been caused to develop immunity to drugs.Meanwhile, grass when weeds occur is mutually complicated, and grassy weed, broad leaved weed, the mixed life of nutgrass flatsedge multiclass weeds, single variety weed killer herbicide uses can not solve farmland weed, all can show defect in a certain respect and limitation.Variety classes weed killer herbicide mixture, have herbicidal spectrum wide, promote actual effect, delay herbicide resistance, time and labour saving advantage.
Bensulfuron-methyl, English name: bensulfuron-methyl, chemical name: α-{ [(4,6-dimethoxypyridin-α-Ji) amino carbonyl amino] sulfonvlmethvl } methyl benzoate, structural formula:
Bensulfuron-methyl is selectivity inner-adsorption conduction-type herbicide, can spread rapidly in water, transfers to each portion of weeds, the biosynthesis of hindered aminoacid, lysine, isoleucine, stop division and the growth of cell for weeds root and blade absorb.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 downright bad.Entering rapid metabolization in paddy rice body is harmless inert chemi-cal thing, to rice safety.Bensulfuron-methyl not only to the broad leaved weeds such as Monochoria vaginalis, special-shaped nutgrass flatsedge, duckweed, alternanthera philoxeroides, nutgrass flatsedge effectively, also has activity to barnyard grass.
Cyhalofop-butyl, English name: cyhalofop-butyl, chemical name: (R)-2-[4 (4-cyano group-2-fluorophenoxy) phenoxy group]-butyl propionate, structural formula:
Cyhalofop-butyl is kind paddy rice in fragrant phenoxy phenoxy propionic acid weed killer herbicide to tight security.Cyhalofop-butyl is also Uptake and translocation weed killer herbicide, by blade and the leaf sheath absorption of plant corpus, phloem conducts, accumulate the meristem zone in plant corpus, suppress acetyl-CoA carboxylase, fatty acid is synthesized and stops, the growth division of cell can not normally be carried out, membranous system etc., containing fat structural deterioration, finally cause Plant death.Cyhalofop-butyl, not only to moleplant seed, also can prevent and treat the grassy weeds such as barnyard grass, Paspalum distichum, green foxtail, eleusine indica, amur foxtail.
Penoxsuam, English name: penoxsulam, chemical name: 2-(2,2-difluoro ethoxy)-N-(5,8-dimethoxy (1,2,4) triazole-(1,5-C) pyrimidine-2-base)-6-trifluoromethyl-benzene sulfanilamide (SN), structural formula:
Penoxsuam is inner-adsorption conduction-type herbicide, through cauline leaf, young shoot and Root Absorption, and can by soil rapid adsorption, conduct to meristematic tissue by xylem and phloem, suppress plant strain growth, make growing point chlorosis, after process, 7-14d terminal bud reddens, downright bad, and 2-4 week plant is dead; This agent is strong inhibitor of acetolactate synthetase, and medicament presents comparatively slow, needs certain hour weeds just dead gradually.Rice field broad-spectrum herbicide, effectively can prevent and kill off barnyard grass and annual sedge weed, and have numerous broad leaved weed, also anti-bensulfuron-methyl weeds in rice field can be prevented and kill off, and to many broad-leaveds and sedge weed and barnyard grass etc., there is residual activity, be the kind that herbicide spectrum in current herbicide for rice field is the widest.
Variety classes weed killer herbicide mixture, have herbicidal spectrum wide, promote actual effect, delay herbicide resistance, time and labour saving advantage.Being screened by formulation of pesticide, can effectively improve actual control efficiency, reduce dosage, reduce costs, delay disease, worm, the drug-fast generation of crop smothering, is the important means that agricultural synthesis is administered.The recipe determination of the present inventor to bensulfuron-methyl, penoxsuam and cyhalofop-butyl conducts in-depth research, find that bensulfuron-methyl, penoxsuam and cyhalofop-butyl carry out mixture, synergy or summation action is had to paddy field annual weed in certain mixed ratio scope, after further study, the present invention is completed.
Summary of the invention
The object of the invention is to solve in prior art to farmland weed develop immunity to drugs problem and actual control efficiency poor, provide a kind of efficient, low toxicity, quick-acting are good and the lasting period is long, are conducive to the Herbicidal combinations of the farmland weed comprehensive regulation.
Another object of the present invention is used for preventing and kill off paddy field annual weed etc. by this Herbicidal combinations.
Technical scheme: for achieving the above object, the invention provides a kind of Herbicidal composition for rice field, and active ingredient is bensulfuron-methyl, penoxsuam, cyhalofop-butyl.Bensulfuron-methyl percentage by weight is in the composition 1% ~ 10%, and penoxsuam percentage by weight is in the composition 1% ~ 10%, cyhalofop-butyl percentage by weight is in the composition 1% ~ 15%, and all the other are insecticides adjuvant.
Described Herbicidal combinations can add suitable insecticides adjuvant, according to well known to a person skilled in the art method, is processed into the application forms of the applicable agricultural uses such as oil-suspending agent, aqueous suspension agent, wetting powder or water dispersible granules.
The auxiliary agent used in Herbicidal combinations of the present invention comprises solvent, emulsifier, wetting agent, stabilizing agent, dispersant, thickener, pH adjusting agent, defoamer, antifreezing agent, deionized water, filler etc., be all various auxiliary agents conventional in Pesticide formulation, concrete composition and consumption are determined by simple test according to recipe requirements.
The production technology of the various application forms of Herbicidal combinations provided by the invention all belongs to existing known technology, does not repeat them here.
Herbicidal combinations provided by the invention, usual employing is watered spraying, pesticide-clay mixture spreads fertilizer over the fields method and uses, and also can adopt other operation techniques agriculturally applied as required.Herbicidal combinations provided by the invention, in the paddy rice 2 leaf phase to the shooting stage, should use before the paddy field annual weed 5 leaf phase when applying.
Herbicidal combinations provided by the invention has following beneficial effect.
1, Herbicidal combinations provided by the invention, obvious synergistic effect is shown in certain ratio range, the control efficiency of composition is significantly improved than single dose, reduce the using dosage of agricultural chemicals, decrease times for spraying, reduce drug cost, decrease the adverse effect of agricultural chemicals to ecotope.
2, Herbicidal combinations provided by the invention, the combination of two kinds of effective ingredients, expands herbicidal spectrum, and a drug can solve various weed problem, compensate for defect when single dose uses and limitation.
3, Herbicidal combinations provided by the invention, effective ingredient mechanism of action is different, can overcome the shortcoming that long-term single use easily produces resistance, extends the service life of medicament, to the comprehensive regulation important in inhibiting of Weed Resistance.
4, Herbicidal combinations provided by the invention, drug effect plays rapidly, and the lasting period is long, and use cost is low, easy to use, time saving and energy saving, and it applies huge economic benefit and social benefit.
Embodiment
In order to make object of the present invention, technical scheme and advantage more short and sweet, the following specific embodiment of the present invention is described, but the present invention is only limitted to absolutely not these examples.The following stated is only the good embodiment of the present invention, only for describing the present invention, can not be interpreted as the restriction to scope of the present invention.It should be pointed out that all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
In these embodiments, unless otherwise indicated, all percentage is all weight percentage.
preparation method's embodiment one:
Bensulfuron-methyl 2%,
Penoxsuam 1.5%,
Cyhalofop-butyl 6.5%,
Pull open powder 5%,
NNO 12%,
Talcum powder 4%,
Kaolin to 100%.
Mix entering in blender after above-mentioned formula in proportion coarse crushing, more namely obtain 10% bensulfuron-methyl penoxsuam cyhalofop-butyl wetting powder after air-flow crushing.
preparation method's embodiment two:
Bensulfuron-methyl 3%,
Penoxsuam 2%,
Cyhalofop-butyl 10%,
1601# 15%,
LS 5%,
SOPA-270 4%,
Bentonite 3%,
Xanthans 0.1%,
Organosilicon 0.4%,
Glycerine 5%,
Deionized water to 100%.
Above-mentioned formula is pulverized in proportion in advance, then adds in sand mill and grind, the obtained 15% bensulfuron-methyl penoxsuam cyhalofop-butyl suspending agent of allotment after high shear mixing.
preparation method implements three:
Bensulfuron-methyl 15%,
Penoxsuam 10%,
Cyhalofop-butyl 15%,
Lauryl sodium sulfate 6%,
Polycarboxylate 4%,
Sodium chloride 2%,
Polyethylene glycol 3%,
Kaolin to 100%.
By above-mentioned formula dry pulverization process, granulation, drying, the obtained 40% bensulfuron-methyl penoxsuam cyhalofop-butyl water-dispersible granules of screening preparation in proportion.
preparation method's embodiment four:
Bensulfuron-methyl 5%,
Penoxsuam 5%,
Cyhalofop-butyl 10%,
Calcium dodecyl benzene sulfonate 5%,
Castor oil polyoxyethylene ether 11%,
Sodium lignin sulfonate 4%,
Methyl oleate to 100%.
Pulverized in advance in proportion by above-mentioned material, then add in sand mill and grind, after high shear mixing, the obtained 20% bensulfuron-methyl penoxsuam flucetosulfuron of allotment dispersibles oil-suspending agent.
assays Example one:formulation screening test.
For understanding bensulfuron-methyl, penoxsuam and cyhalofop-butyl mixture further to the synergy of weeds, the present inventor has carried out formulation screening test to bensulfuron-methyl, penoxsuam and cyhalofop-butyl mixture.
1.1 reagent agents: 96% bensulfuron-methyl; The former medicine of 98% penoxsuam; 98% cyhalofop-butyl active compound.
1.2 for examination material: Monochoria vaginalis ( monochoiavaginalisburm.f.) (field collection Seed storage).Moleplant seed ( leptochloa chinensis(L.) Nees) (field collection Seed storage).Barnyard grass ( echinochloa crusgalli(L.) Beauv.) (field collection Seed storage).
1.3 test apparatuses: controlled greenhouse by solar heat; The accurate laboratory spray tower of POTTER; Electronic balance (sensibility reciprocal 0.1mg); Micropipette rifle etc.
1.4 test methods: 1.4.1 tests Treatment Design:
(1) bensulfuron-methyl 0.6g (a.i.)/667m 2;
(2) bensulfuron-methyl 0.9g (a.i.)/667m 2;
(3) bensulfuron-methyl 1.2g (a.i.)/667m 2;
(4) bensulfuron-methyl 1.5g (a.i.)/667m 2;
(5) bensulfuron-methyl 1.8g (a.i.)/667m 2;
(6) penoxsuam 0.6g (a.i.)/667m 2;
(7) penoxsuam 0.9g (a.i.)/667m 2;
(8) penoxsuam 1.2g (a.i.)/667m 2;
(9) penoxsuam 1.5g (a.i.)/667m 2;
(10) penoxsuam 1.8g (a.i.)/667m 2;
(11) cyhalofop-butyl 5.0g (a.i.)/667m 2;
(12) cyhalofop-butyl 4.0g (a.i.)/667m 2;
(13) cyhalofop-butyl 3.0g (a.i.)/667m 2;
(14) cyhalofop-butyl 2.0g (a.i.)/667m 2;
(15) cyhalofop-butyl 1.0g (a.i.)/667m 2;
(16) bensulfuron-methyl 0.6g+penoxsuam 1.8g+ cyhalofop-butyl 5.0g (a.i.)/667m 2;
(17) bensulfuron-methyl 0.9g+penoxsuam 1.5g+ cyhalofop-butyl 4.0g (a.i.)/667m 2;
(18) bensulfuron-methyl 1.2g+penoxsuam 1.2g+ cyhalofop-butyl 3.0g (a.i.)/667m 2;
(19) bensulfuron-methyl 1.5g+penoxsuam 0.9g+ cyhalofop-butyl 2.0g (a.i.)/667m 2;
(20) bensulfuron-methyl 1.8g+penoxsuam 0.6g+cyhalofop-butyl 1.0g (a.i.)/667m 2;
(21) blank.
1.4.2 activity test:
Test Treatment Design dosage configuration liquid according to 1.4.1, first calculate drug dosage according to experimental scheme, then take penoxsuam with electronic balance and cyhalofop-butyl first uses acetone solution respectively, and then dilute stand-by with 0.1% Tween 80 solution.
After weed seed presoaking and germinating, point is sowed at the sectional area 0.25m that earth is housed 2iron basin in, by design test treatment dosage prepare liquid after, every basin broadcasts 100, in the greenhouse in cultivation 3 leaf phases carry out chemicals treatment.Test Treatment Design dosage configuration liquid according to 1.4.1, spray liquid with the accurate laboratory spray tower of POTTER, spouting liquid, for often to process 50ml, keeps ground moistening after medicine.Often process repetition 4 times, within after medicine 20 days, take each process weeds acrial part fresh weight, calculate the percentage that each process acrial part and remaining weeds are contrast, by the evaluation of Gowing method bensulfuron-methyl, penoxsuam and cyhalofop-butyl mixture to the synergy of weeds.The actual preventive effect of Mixed Pharmacy calculates as follows:
In formula: the Weed-control effect of A bensulfuron-methyl; The Weed-control effect of B penoxsuam; The Weed-control effect of C cyhalofop-butyl; E 0the Weed-control effect of the Weed-control effect+cyhalofop-butyl of the Weed-control effect+penoxsuam of bensulfuron-methyl; The actual preventive effect of E mixe herbicide.E-E 0> 10% is synergistic effect; E-E 0<-10% is antagonism; E-E 0be worth between theoretical value ± 10% be addition.
1.5 results and analysis:
Result of the test is as shown in table 1, table 2, table 3, and bensulfuron-methyl, penoxsuam and cyhalofop-butyl mixture composition are to Monochoria vaginalis, moleplant seed, barnyard grass E-E 0be worth equal > 10%, illustrate that bensulfuron-methyl, penoxsuam and cyhalofop-butyl mixture are combined as synergistic effect, the combination of bensulfuron-methyl, penoxsuam and cyhalofop-butyl mixture is feasible.
The combination of table 1, bensulfuron-methyl, penoxsuam and cyhalofop-butyl measures (after medicine 20 days) the synergy of Monochoria vaginalis.
The combination of table 2, bensulfuron-methyl, penoxsuam and cyhalofop-butyl measures (after medicine 20 days) the synergy of moleplant seed.
The combination of table 3, bensulfuron-methyl, penoxsuam and cyhalofop-butyl measures (after medicine 20 days) the synergy of barnyard grass.
assays Example two: bensulfuron-methyl, penoxsuam and cyhalofop-butyl composition prevent and kill off the field control effectiveness test of rice direct seeding field annual weed.
Reagent agent and dispenser dosage:
(1) 10% bensulfuron-methyl penoxsuam cyhalofop-butyl wetting powder (2% bensulfuron-methyl, 1.5% penoxsuam: 6.5% cyhalofop-butyl), 6g (a.i.)/667m 2(1#);
(2) 15% bensulfuron-methyl penoxsuam cyhalofop-butyl suspending agents (3% bensulfuron-methyl, 2% penoxsuam, 10% cyhalofop-butyl), 6g (a.i.)/667m 2(2#);
(3) 40% bensulfuron-methyl penoxsuam cyhalofop-butyl water-dispersible granules (15% bensulfuron-methyl, 10% penoxsuam, 15% cyhalofop-butyl), 6g (a.i.)/667m 2(3#);
(4) 20% bensulfuron-methyl penoxsuam flucetosulfurons dispersible oil-suspending agent (5% bensulfuron-methyl, 5% penoxsuam, 10% cyhalofop-butyl), 6g (a.i.)/667m 2(4#).
Contrast medicament and dispenser dosage:
(1) 10% bensulfuron-methyl wetting powder, 2g (a.i.)/667m 2(5#);
(2) 25 grams per liter penoxsuam oil-suspending agents, 2g (a.i.)/667m 2(6#);
(3) 15% cyhalofop-butyl missible oils, 6g (a.i.)/667m 2(7#).
Spraying time: on April 17th, 2012, paddy rice 3 leaf phase, paddy field weed 2-3 leaf phase dispenser.
Test site: Lao Keng village, Ren Shan town, Huizhou Huidong County.
Result of the test: in table 3, as can be seen from the test results: after dispenser 30 days, bensulfuron-methyl of the present invention, penoxsuam and cyhalofop-butyl composition prevent and kill off rice direct seeding field annual weed preventive effect more than 96%, the single dose respectively contrasted significantly better than bensulfuron-methyl, penoxsuam, cyhalofop-butyl.In experimentation, each medicament is showed no generation poisoning, to rice safety.
Table 4, prevent and kill off rice direct seeding field annual weed field control effectiveness test result (after medicine 30 days).

Claims (3)

1. a Herbicidal composition for rice field, it is characterized in that: active ingredient is bensulfuron-methyl, penoxsuam, cyhalofop-butyl, wherein, bensulfuron-methyl percentage by weight is in the composition 1% ~ 10%, penoxsuam percentage by weight is in the composition 1% ~ 10%, cyhalofop-butyl percentage by weight is in the composition 1% ~ 15%, and all the other are insecticides adjuvant.
2. Herbicidal composition for rice field according to claim 1, is characterized in that: its formulation is the one in oil-suspending agent, aqueous suspension agent, wetting powder or water dispersible granules.
3. Herbicidal composition for rice field according to claim 1 is preventing and kill off the application in paddy field annual weed.
CN201310043175.6A 2013-02-04 2013-02-04 Herbicidal composition for rice field Active CN103120173B (en)

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Families Citing this family (3)

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Publication number Priority date Publication date Assignee Title
CN104855408A (en) * 2015-05-14 2015-08-26 北京明德立达农业科技有限公司 Herbicide composition and use thereof
CN105123730A (en) * 2015-09-16 2015-12-09 安庆市宜秀区永兴农机农艺综合发展专业合作社 Phytocidal composition
CN105746558A (en) * 2016-05-13 2016-07-13 创新美兰(合肥)股份有限公司 Bensulfuron methyl, cyhalofop-butyl and penoxsulam compounded dispersible oil suspending agent and preparation method thereof

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007079965A2 (en) * 2006-01-13 2007-07-19 Bayer Cropscience Ag A herbicide composition for paddy field
WO2008075743A1 (en) * 2006-12-21 2008-06-26 Kumiai Chemical Industry Co., Ltd. Herbicide composition

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007079965A2 (en) * 2006-01-13 2007-07-19 Bayer Cropscience Ag A herbicide composition for paddy field
WO2008075743A1 (en) * 2006-12-21 2008-06-26 Kumiai Chemical Industry Co., Ltd. Herbicide composition

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Patentee before: Guangdong Zhongxun Agricultural Technology Co., Ltd.