CN102283231B - Oil suspending agent composition containing nicosulfuron and fluroxypyr - Google Patents
Oil suspending agent composition containing nicosulfuron and fluroxypyr Download PDFInfo
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- CN102283231B CN102283231B CN 201110167216 CN201110167216A CN102283231B CN 102283231 B CN102283231 B CN 102283231B CN 201110167216 CN201110167216 CN 201110167216 CN 201110167216 A CN201110167216 A CN 201110167216A CN 102283231 B CN102283231 B CN 102283231B
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- nicosulfuron
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Abstract
The invention relates to a pesticide composition, in particular to an oil suspending agent weeding composition prepared by compounding nicosulfuron and fluroxypyr, wherein the weight ratio of the nicosulfuron to the fluroxypyr is preferably (1:1)-(1:4), further preferably 1: (1.5-2), and most preferably 1:2. The total application amount of the nicosulfuron and the fluroxypyr is preferably 100-120g/hm<2>.
Description
Technical field
The present invention relates to pesticide field, particularly relate to a kind of oil-suspending agent Herbicidal combinations that is formed by nicosulfuron and fluroxypyr binary built.
Background technology
Nicosulfuron (nicosulfuron) is by inhaling the conductivity weed killer herbicide in the sulfonylurea of Japanese Shi Yuan company exploitation, can be weeds cauline leaf and root absorption, in plant corpus, conduct subsequently, by suppressing the activity of acetolactate synthestase in the plant corpus, cause sensitive plant growth retardation, cauline leaf chlorisis, withered gradually, generally speaking death in 20-25 days, but in the situation that temperature is lower some perennial weed is needed the long time.In the dispenser good drug efficacy before the phase of 4 leaves behind the bud, the dispenser drug effect descended when seedling was large.This medical instrument has the front activity of weeding of bud, but active in low behind the bud.
The chemical structural formula of nicosulfuron is:
Fluroxypyr (fluroxypyr) is the organic heterocyclic class selectivity inner sucting conduction type herbicide after seedling of The Dow Agrosciences, LLC. (Dow AgroSciences Company) Development and Production, is applicable to prevent and kill off the various broad leaved weeds of gramineous crop Tanaka such as wheat, barley, corn.Fluroxypyr is the inner sucting conduction type herbicide after seedling, and is very fast by plant absorbing behind the medicine, makes sensitive plant the reaction of typical hormone herbicide occur, and plant is lopsided, distortion, and is finally withered.Be applicable to the ground such as wheat, barley, corn, grape, orchard, pasture, forest land, lawn and prevent and kill off broad leaved weed; Such as clearvers, volume stem knotweed, kitchen garden, black nightshade, field bindweed, knotweed, amaranth etc., invalid to grassy weed.
The chemical structural formula of fluroxypyr:
At present for the composite weed killer herbicide of nicosulfuron and fluroxypyr, the applicant finds through retrieval, although in application number is 200710023339.3 application for a patent for invention Publication Specification, specifically disclosed the re-compounded binary herbicide of nicosulfuron and fluroxypyr, but the part that relates to herbicidal effect in the prior art document does not specifically provide the concrete proportioning of used mixture herbicide, the consumption of used contrast agents nicosulfuron and fluroxypyr is not provided yet, therefore can not confirms whether to have between two active components synergistic effect and in which kind of proportioning interval, have synergistic effect by its result of the test; In addition, the applicant further studies discovery, the complex weedicide formulation that provides in the prior art document is wetting powder, and when the applicant is processed into the oil-suspending agent formulation with the binary built Herbicidal combinations of nicosulfuron and fluroxypyr, compare the application effect that wetting powder can improve this weed killer herbicide greatly, and this Herbicidal combinations to be higher than activity of weeding to piemarker to the activity of weeding of barnyard grass.Based on above discovery, the applicant has finished the present invention.
Summary of the invention
One of purpose of the present invention is to provide the oil-suspending agent that a kind of mixed ratio is reasonable, control efficiency is good Herbicidal combinations, and its active component is by the nicosulfuron of synergy effective dose and fluroxypyr is composite forms.
Another object of the present invention is to provide the purposes that above-mentioned oil-suspending agent Herbicidal combinations is used for control of maize field annual weed, especially barnyard grass.
Technical scheme of the present invention is as described below:
A kind of oil-suspending agent Herbicidal combinations is characterized in that this oil-suspending agent Herbicidal combinations is as its herbicidal active component with the effective nicosulfuron of synergy and fluroxypyr.
Wherein, in this oil-suspending agent Herbicidal combinations the weight ratio of nicosulfuron and fluroxypyr be preferably 1: 1～1: 4, more preferably 1: 1.5～2, most preferably be 1: 2.
Wherein, total amount of application of nicosulfuron and fluroxypyr is preferably 100～120g/hm in this oil-suspending agent Herbicidal combinations
2
Oil-suspending agent Herbicidal combinations of the present invention also contains wetting agent, dispersant, thickener and vegetable oil, and can choose auxiliary agents such as containing defoamer, antifreeze, antioxidant wantonly except containing above-mentioned Herbicidal combination beyond the region of objective existence.
Oil-suspending agent of the present invention can prepare in a known manner, for example by reactive compound and wetting agent, dispersant, thickener are joined in the vegetable oil, and the optional auxiliary agents such as defoamer, antifreeze, oxidant that add, then stir.
Cornfield weeding composition of the present invention can be mixed with according to the conventional production process of this area the floating agent of pesticide oil suspension.Its administration form depends on specific application; In all cases, must guarantee that their dispersion is trickle as much as possible and even.
Dispersant or wetting agent; Can be nonionic or ionic.For example, lauryl sodium sulfate, Teepol, neopelex, polyoxyethylene fatty acid ester, polyoxyethylene aliphatic alcohol ether, polyoxyethylene fatty amine etc.Material as dispersant and wetting agent has: sodium lignin sulfonate, calcium lignosulfonate, alkylol polyoxyethylene groups ether sodium sulfate, octylphenol polyethylene oxyethylene group ether sulfate, sodium alkyl sulfonate, neopelex etc.
Thickener can be for example carbonyl methylol, polyvinyl alcohol or the polyvinyl acetate that synthesizes, or natural water-soluble polymer, such as xanthans, gelatin, gum Arabic, phenolic resins, shellac, carboxymethyl cellulose and sodium alginate etc.
Defoamer is: bubble enemy, silicone, C
8-10Fatty alcohol, phosphoric acid ester, C
10-20Saturated fat acids (such as capric acid) and acid amides etc.
Antifreeze is calcium chloride etc.
The present composition has the following advantages: the one, and composition shows fabulous synergistic effect in certain ratio range, mixed composition has obviously improved herbicidal effect than its single dose, thereby reduced application dosage, when reducing drug cost, reduced the impact on environment.The 2nd, herbicidal spectrum is wide, and a kind of medicament can be prevented and treated multiple weeds simultaneously; The present composition has good preventive and therapeutic effect to the corn field annual weed.
Embodiment:
The invention will be further described below in conjunction with embodiment, but it only is illustration, and by no means scope of the present invention is construed as limiting.In an embodiment, except as otherwise noted, the percentage composition of each component all refers to weight percentage.
1. Preparation Example
1.1 the preparation of 12% oil-suspending agent
2. biological Examples: the composite Toxicity Determination test to the corn annual weed of nicosulfuron fluroxypyr (entrusting plant protection institute of Shandong Agricultural University to bear)
2.1 for the examination target
Barnyard grass (Echinochloa crusgalli), piemarker (Abutilon theophrasti) were picked up from suburb, Tai’an, Shandong Province corn field in 2010.
Above-mentioned weeds adopt pot-culture method to cultivate.With 180 * 140mm plastic nutritional alms bowl, put in enamel tray, in-built adopting back from the farmland through the air-dry topsoil that sieves (4/5), the soil moisture initial stage all is controlled at 20%, select the weed seed of full seed homogeneous, with 25 ℃ of emerge in worm water 6 hours, vernalization in 28 ℃ of biochemical cultivation cases (dark), the weed seed that has just showed money or valuables one carries unintentionally evenly is placed in soil surface, then earthing 0.7cm.Chemicals treatment is placed in the controlled greenhouse by solar heat and cultivates, and regularly adds a certain amount of water in enamel tray, keeps ground moistening.
2.2 condition of culture
In controlled greenhouse by solar heat, carry out 19～27 ℃ of temperature, natural lighting, relative moisture 62%～81%.
Soil types is loam, and the content of organic matter is 1.83%, pH=7.1, alkali-hydrolyzable nitrogen 85.2mg/kg, rapid available phosphorus 38.3mg/kg, available potassium 83.0mg/kg.
2.3 instrument and equipment
3WT-II type spray tower, Beijing Lei Qianna green technology Development Co., Ltd.GA110 type ten thousand/electronic balance (Germany); ZDR2000 intelligent data recorder (the large Instr Ltd. in pool, Hangzhou); SPX type Intelligent biochemistry incubator (south of the River, Ningbo instrument plant).
2.4 experimental scheme
2.4.1 test medicine
The former medicine of 95.0% nicosulfuron (nicosulfuron) (Shandong Jingbo Agrochemicals Ltd.);
The former medicine of 95.3% fluroxypyr (fluroxypyr) (the green despot's chemical inc in Shandong).
2.4.2 other reagent
Because nicosulfuron is difficult to dissolving in common solvent, therefore, two kinds of former medicine solvents all adopt dimethyl formamide (DMF), and are with the dilution of the content 0.1% emulsifier T-80 aqueous solution, existing with existing dilution.
2.5 test is processed
2.5.1 dosage setting
On the basis of indoor preliminary survey, nicosulfuron is made as respectively the different combinations of using with from the consumption of fluroxypyr, see Table 1, design altogether 9 groups.As blank, carry out respectively indoor bioassay with the water that do not contain medicament, contain same solvent and emulsifier.
2.5.2 test repeats
Every processing repeats 4 times, each every processing 3 basins, and 20 of every basin sowing weed seeds, every processing is totally 60 strains.
2.6 processing mode
2.6.1 processing time and number of times
Test shares medicine 1 time.Treat 1 heart stage of barnyard grass 2 leaves, 2 leaf periods of piemarker, thinning keeps weeds 15 strains in every basin, and every processing keeps 45 strains, then continues to be cultured to 1 heart stage of barnyard grass 4 leaves, 4 leaf periods of piemarker are processed.
2.6.2 use apparatus and administrated method
Cultured examination material evenly is placed in area 0.3m
2Platform on, with the quantitative spray tower cauline leaf spraying of 3WT-II type, spouting liquid is by 450 kilograms/hectare.Atomisation pressure 0.3MPa.After whole liquid medicine jets are complete, close gas check valve, after 30 seconds, open the spraying pyller, take out nutritive cube.Then open air valve, spray clear water 50ml cleans sparge pipe.
2.7 test method
Adopt pot-culture method.Weeds are cultivated and see 2.1, carry out with reference to " farm-chemical indoor determination test rule weed killer herbicide, the 4th, 7 parts ".Administrated method is seen 3.3.2, adopts the cauline leaf facture.
2.8 data survey and statistical analysis
2.8.1 investigation method
Adopt the absolute number investigation method, cut off the whole strain seedling of survival weeds with blade along soil surface, with analytical balance weighing weeds fresh weight.For dead weeds, be zero by fresh weight.
2.8.2 control time and number of times
Process investigation in rear 20 days, investigate altogether 1 time.
2.9 interpretation of result and discussion
Table 1 nicosulfuron, fluroxypyr are used the synergy effect (Gowing method) to weeds with
Result of the test shows, nicosulfuron and fluroxypyr are used each combined treatment with to the inhibiting rate E-E of 2 kinds of weeds
0Value be on the occasion of, show certain synergistic effect.Each combination is to the E-E of barnyard grass
0Value is higher than the E-E to piemarker
0Value, wherein the combination of 40+60 and 40+80 is to the inhibiting rate E-E of barnyard grass
0Value is greater than the combination of 10%, the 40+80 inhibiting rate E-E to piemarker
0Value illustrates that greater than 10% the combination of 40+80 has obvious synergistic effect.
In 9 proportionings, each combination is all lower to barnyard grass, piemarker preventive effect under low consumption.Comprehensively to the whole preventive effect of 2 kinds of weeds, nicosulfuron+fluroxypyr consumption is 40+60～80g/hm
2The combination field efficacy desirable.From the considerations such as balance of cost, preventive effect, herbicide spectrum and prescription, it is comparatively suitable that nicosulfuron and fluroxypyr are used with near 1: 1.5～2 scopes reach.
3. formulation screening test (entrust Shandong Agricultural University plant protection institute bear)
3.1 experimental scheme
3.1.1 test medicine
The former medicine of 95.0% nicosulfuron (nicosulfuron) (Shandong Jingbo Agrochemicals Ltd.);
The former medicine of 95.3% fluroxypyr (fluroxypyr) (the green despot's chemical inc in Shandong).
3.2 test is processed
3.2.1 dosage setting
On the basis of indoor preliminary survey, the nicosulfuron of different dosage form (according to the oil-suspending agent of the embodiment of the present application preparation and the wetting powder of aforementioned documents method preparation) is made as respectively the different combinations of using with from the consumption of fluroxypyr, see Table 1, design altogether 9 groups.As blank, carry out respectively indoor bioassay with the water that do not contain medicament, contain same solvent and emulsifier.
3.2.2 test repeats
Every processing repeats 4 times, each every processing 3 basins, and 20 of every basin sowing weed seeds, every processing is totally 60 strains.
3.3 processing mode
3.3.1 processing time and number of times
Test shares medicine 1 time.Treat 1 heart stage of barnyard grass 2 leaves, 2 leaf periods of piemarker, thinning keeps weeds 15 strains in every basin, and every processing keeps 45 strains, then continues to be cultured to 1 heart stage of barnyard grass 4 leaves, 4 leaf periods of piemarker are processed.
3.3.2 use apparatus and administrated method
Cultured examination material evenly is placed in area 0.3m
2Platform on, with the quantitative spray tower cauline leaf spraying of 3WT-II type, spouting liquid is by 450 kilograms/hectare.Atomisation pressure 0.3MPa.After whole liquid medicine jets are complete, close gas check valve, after 30 seconds, open the spraying pyller, take out nutritive cube.Then open air valve, spray clear water 50ml cleans sparge pipe.
3.4 test method
Adopt pot-culture method.Weeds are cultivated and see 2.1, carry out with reference to " farm-chemical indoor determination test rule weed killer herbicide, the 4th, 7 parts ".Administrated method is seen 3.3.2, adopts the cauline leaf facture.
3.5 data survey and statistical analysis
3.5.1 investigation method
Adopt the absolute number investigation method, cut off the whole strain seedling of survival weeds with blade along soil surface, with analytical balance weighing weeds fresh weight.For dead weeds, be zero by fresh weight.
3.5.2 control time and number of times
Process investigation in rear 20 days, investigate altogether 1 time.
3.6 interpretation of result and discussion
6.1 evaluating drug
After the chemicals treatment 6 days, two kinds of formulations all begin to occur symptom.Growth is suppressed, the curling and part chlorosis of the lobus cardiacus of the blade of being injured, and part Lao Ye also begins curling, and the blade edge chlorosis, and whole strain is withered dead after 20 days.
Can to get conclusion as follows for data from table 2,3: the at first reveal any symptoms that is mixed of oil suspending agent type 40+80, and also death is also very thorough, and the final lethality of barnyard grass and piemarker is respectively 98.8% and 98.1%, and the fresh weight inhibiting rate is respectively 95.7% and 96.5%.And wettable powder has been compared a certain distance with the oil suspending agent type.Therefore, no matter from performance speed, or on the weeding completeness, nicosulfuron and fluroxypyr be mixed for the oil suspending agent type should be present best formulation.
Table 2 nicosulfuron and fluroxypyr are used different dosage form with to the determination of activity result of barnyard grass
Table 3 nicosulfuron and fluroxypyr are used different dosage form with to the determination of activity result of piemarker
Claims (4)
1. oil-suspending agent Herbicidal combinations, it is characterized in that its activity of weeding composition is comprised of nicosulfuron and the fluroxypyr of synergy effective dose, the weight ratio of nicosulfuron and fluroxypyr is 1: 2, and the amount of application of nicosulfuron and fluroxypyr is 100～120g/hm
2, except above-mentioned herbicidal active component, also contain wetting agent, dispersant, thickener and vegetable oil in this oil-suspending agent Herbicidal combinations.
2. according to claim 1 oil-suspending agent Herbicidal combinations is characterized in that in this oil-suspending agent Herbicidal combinations also optional defoamer, antifreeze or the antioxidant of containing.
3. the described oil-suspending agent Herbicidal combinations of arbitrary claim according to claim 1～2, it is characterized in that this oil-suspending agent Herbicidal combinations contains: nicosulfuron 4wt%, fluroxypyr 8wt%, wetting agent neopelex 9wt%, dispersant calcium lignosulfonate 9wt%, xanthans 6wt%, surplus is corn oil.
4. the purposes that the described oil-suspending agent Herbicidal combinations of arbitrary claim of claim 1～2 is used for control of maize field barnyard grass.
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| CN103783063A (en) * | 2014-02-27 | 2014-05-14 | 江苏省激素研究所股份有限公司 | Herbicide composition for removing weeds from wheat fields |
| CN104542662A (en) * | 2014-12-16 | 2015-04-29 | 广东中迅农科股份有限公司 | Weeding composition containing amicarbazone, fluroxypyr and nicosulfuron |
| CN107094787A (en) * | 2017-06-29 | 2017-08-29 | 江苏苏滨生物农化有限公司 | A kind of Herbicidal combinations containing nicosulfuron |
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Owner name: QINGDAO JINER AGROCHEMICALS R + D CO., LTD. Free format text: FORMER OWNER: WANG CONGAI Effective date: 20130409 |
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Effective date of registration: 20130409 Address after: 266300 Shandong Province, Qingdao city of Jiaozhou economic and Technological Development Zone of Jiaozhou Bay Industrial Park Jin Muir Road No. 1 Applicant after: QINGDAO JINER AGROCHEMICALS R&D CO., LTD. Address before: 266300 Shandong Province, Qingdao Jiaozhou city Jiaozhou Bay Industrial Park Jin Muir Road No. 1 Applicant before: Wang Congai |