CN106719716A - A kind of Herbicidal combinations of fluorine-containing chloropyridine ester and bentazone - Google Patents
A kind of Herbicidal combinations of fluorine-containing chloropyridine ester and bentazone Download PDFInfo
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- CN106719716A CN106719716A CN201611214307.7A CN201611214307A CN106719716A CN 106719716 A CN106719716 A CN 106719716A CN 201611214307 A CN201611214307 A CN 201611214307A CN 106719716 A CN106719716 A CN 106719716A
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- bentazone
- chloropyridine ester
- fluorine chloropyridine
- wheat
- weeds
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/72—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with nitrogen atoms and oxygen or sulfur atoms as ring hetero atoms
- A01N43/88—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with nitrogen atoms and oxygen or sulfur atoms as ring hetero atoms six-membered rings with three ring hetero atoms
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/34—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one nitrogen atom as the only ring hetero atom
- A01N43/40—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one nitrogen atom as the only ring hetero atom six-membered rings
Abstract
The invention discloses a kind of herbicidal composition, a kind of herbicidal composition for eliminating weed in wheat field with fluorine chloropyridine ester and bentazone as active component is specifically disclosed, the weight ratio of active component fluorine chloropyridine ester and bentazone is 1 in said composition:400‑16:25, active component weight percentage in the composition is 5 85%.This complex weedicide can be prepared into wettable powder, water dispersible granules, missible oil, dispersible the formulations such as oil-suspending agent, microemulsion or aqua, herbicidal composition of the present invention can simultaneously prevent and kill off various broad leaved weeds in wheat paddock, significantly improve the preventive effect to weeds of wheat, effective ingredient consumption is few, use cost is low, it is a kind of preferable herbicide to wheat and succession crop safety.
Description
【Technical field】
The invention discloses a kind of herbicide composition for wheat field, one kind is specifically disclosed with fluorine chloropyridine ester and bentazone
It is used for the herbicidal composition of controlling broad leaved weed in wheat field for active component.
【Background technology】
Wheat is planted year after year as main cereal crops, large area, and Weed infestation is serious, is that this is required to apply every year
Substantial amounts of herbicide carries out weed control.With long-term, the large scale application of herbicide, cause prevention effect undesirable or
Produce the phenomenons such as poisoning to occur repeatedly, have a strong impact on good harvest and the safety of succession crop of wheat.At present, wheat paddock is conventional removes
There are some drawbacks in careless agent, such as sulfonylurea herbicide tribenuron-methyl, bensulfuron-methyl consumption are too high or use party to make rear stubble
Thing peanut, soybean etc. cause poisoning；Phenoxy carboxylic acid herbicides 2,4- d butyl esters, mcpa sodium consumption are too high or apply
It is improper to easily cause chemical injury of crops, produce drift to produce poisoning to neighbouring dicotyledonous crops.If other long-term use is single
Herbicide can cause susceptible weeds quantity to decline, and insensitive or malignant weed quantity rises, and causes weed community to change.
In the single winter wheat area for using of herbicide, weed community in wheat field there occurs serious change, clearvers, wartwort, grandmother's sodium, shepherd's purse
The malignant weeds such as dish increase year by year, and have had a strong impact on the yield of wheat.
Fluorine chloropyridine ester (halauxifen-methyl), chemical name：The chloro- 6- of 4- amino -3- (the chloro- 3- first of the fluoro- 4- of 2-
Phenyl) -2- pyridine carboxylic acid methyl esters, structural formula is：
Fluorine chloropyridine ester is the first arylpicolinic acids ester type compound developed by Tao benefit agriculture, belongs to synthesis growth
Plain class herbicide, possesses the mechanism of action of uniqueness, and it simulates the effect of high dose plant growth regulator, causes specific life
The overstimulation of element regulatory gene long, disturbs multiple growth courses of sensitive plant.Fluorine chloropyridine ester can be via the stem of plant, leaf
And root absorption, combined by with the hormone receptor in plant, stimulate plant cell Hypersegmentation, block conductive tissue, most
After cause plant nutrient to exhaust death.Broad leaved weed is prevented and kill off for cereal crop field, to clearvers, Amaranthus retroflexus, chickweed, Bao Gai
The weeds such as grass, lamb's-quarters, Descurainia sophia, piemarker have a preferable preventive effect, but to the preventive effect of the weeds such as volume stem smartweed, Siberian cocklebur, corn gromwell, shepherd's purse not
It is preferable.
Bentazone (Bentazone), other titles：Bentazon, Lysimachia sikokiana pellet, bentazon etc., chemical name：3- isopropyls-
1H- benzo -2,1,3- thiadiazine -4 (3H) -one 2,2- dioxide, structural formula is：
Weed eradication Pinus benzothiadiazine ketone selectivity killing type herbicide after seedling, it is main logical for seedling stage cauline leaf process
Cross blade contact to work, through in blade face infiltration conduction to chloroplaset, suppressing the electron transmission in photosynthesis, after dispenser
Carton dioxide assimilation process starts suppressed, blade wilting flavescence wholly off to 11 hours within 2 hours, finally results in death, portion
Being allocated as thing can be metabolized bentazone, and it is inactive material to be allowed to fast degradation, to crop safety.Can be used for wheat paddock to prevent and kill off
The broad leaved weeds such as clearvers, Siberian cocklebur, volume stem smartweed, Amaranthus retroflexus, corn gromwell, but it is slightly worse to the effect of lamb's-quarters, piemarker, benbie, and
Bentazone is used alone high cost.
Existing many document reports cross the herbicidal composition containing fluorine chloropyridine ester or bentazone, such as patent
CN201510719753.2 discloses fluorine chloropyridine ester and pinoxaden is compounded for wheat paddock weeding, but both combinations are to portion
Divide the preventive effect of broad leaved weed bad.
Patent CN201310739017.4 discloses a kind of wheat paddock weeding with pyraflufen-ethyl and bentazone as active ingredient
Composition, for preventing and kill off the annual broad-leaved of wheat paddock and sedge weed, but the Herbicidal combinations to part broad leaved weed
Preventive effect is unsatisfactory.
" benzene first mixture " the i.e. mixed agent of bentazone and the chlorine of 2 first 4 for preventing and kill off broad leaved weed commonly used in production at present, the product
The security of the chlorine of 2 first 4 is poor in product, and the content of bentazone is higher in mixed agent, and security is better, and cost is higher；The chlorine of 2 first 4
Content is higher, and cost is lower, and security is also poorer.
In order to make up each single dose of the above and report the deficiency that complex preparation exists in actual use, the present inventor
Further investigate, substantial amounts of formula indoor screening and field control effectiveness test on the basis of have been surprisingly found that, fluorine chloropyridine ester with
Bentazone is compounded in certain ratio range, has excellent prevention effect to weeds of wheat, the preventive effect for being shown and work
Property level beyond each component superposition, with unexpected synergistic function, solve both the above herbicide in herbicide
Spectrum, preventive effect and limitation present on security, have reached the purpose for expanding herbicide controlling spectrum, improving preventive effect, improve security.
【The content of the invention】
It is an object of the invention to the present situation according to current wheat field herbicide, and weeds of wheat a situation arises,
A kind of safe efficient, wide spectrum herbicidal composition for wheat paddock weeding is provided.
To realize the purpose of the present invention, the invention provides a kind of herbicidal composition, its by effective dose fluorine chloropyridine
Ester and bentazone two kinds of active components are constituted.
The active component fluorine chloropyridine ester is 1 with the weight ratio of bentazone:400-16:25, preferably：1:200-8:
25, more preferably：1:100-4:25, still more preferably for：1:50-2:25, optimal proportion is：1:25, two activity into
The weight percentage divided in herbicidal composition is 5-85%.
Herbicidal composition of the present invention can also add carrier, adhesive, disintegrant, dispersion in addition to two kinds of active ingredient
Agent, wetting agent etc. and other contribute to active ingredient in the formulation stablize and drug effect play known substance.
Herbicidal composition of the present invention can be processed into wettable powder, water dispersible granules, missible oil, dispersible oil-suspending agent,
The various formulations of the suitable agricultural use such as microemulsion, aqua, preferred dosage form is wettable powder.
When wettable powder is configured to, it is adjuvant used including：
Dispersant can be selected from lignosulfonates, polycarboxylate, alkylnaphthalene sulfonate, neopelex, alkane
One or more in base polyethenoxy ether sulphonate, alkylphenol-polyethenoxy base ether formaldehyde condensation products etc.；
Wetting agent can be selected from lauryl sodium sulfate, Teepol, AEO, polyoxyethylene nonyl phenyl
One or more in vinethene, sorbitan fatty acid ester APEO etc.；
Carrier can be selected from one or more in kaolin, diatomite, attapulgite, bentonite, white carbon etc..
When water dispersible granules are configured to, it is adjuvant used including：
Dispersant can be selected from polycarboxylate, lignosulfonates, alkylnaphthalene sulfonate, APES, alkane
One or more in base polyethenoxy ether sulphonate etc.；
Wetting agent can be selected from naphthalene sulfonate, lauryl sodium sulfate, aliphatic alcohol sulfate, sorbitan fatty acid ester
One or more in APEO, alkylsulfonate etc.；
Disintegrant can be selected from ammonium sulfate, urea, starch and its derivative, low-substituted hydroxypropyl cellulose, polyethylene pyrrole
One or more in pyrrolidone, sodium alginate etc.；
Adhesive can selected from hydroxyethyl cellulose, soluble starch, polyethylene glycol, methylcellulose, polycarboxylic acid and
One or more in water-soluble high-molecular compound sodium carboxymethylcellulose, polyvinyl alcohol etc.；
Carrier can be selected from white carbon, kaolin, bentonite, diatomite, precipitated calcium carbonate, gypsum, attapulgite, urine
One or more in element, sucrose etc..
When being configured to dispersible oil-suspending agent, it is adjuvant used including：
Dispersant can be selected from methyl naphthalene sulfonic acid salt formaldehyde condensation products, polycarboxylate, lignosulfonates, alkyl naphthalene sulfonic acid
One or more in salt etc.；
Wetting agent can be selected from APES formaldehyde condensation products sulfat, APES phosphoric acid
One or more in ester, alkyl sulfate, alkylsulfonate, naphthalene sulfonate etc.；
Emulsifying agent can be selected from castor oil polyoxyethylene ether, Nongru-700 #, agriculture breast 2201, anhydrous sorbitol single-hard ester acid ester
One or more in APEO etc.；
Thickener can be selected from one or more in bentonite, polyvinyl alcohol, xanthans, aluminium-magnesium silicate etc.；
Defoamer can be organic silicon defoamer；
Cosolvent can be selected from one or more in methyl alcohol, ethanol, dimethyl sulfoxide (DMSO) etc.；
Decentralized medium can be selected from one or more in corn oil, soybean oil, rapeseed oil, methyl oleate etc..
When missible oil is configured to, it is adjuvant used including：
Wetting agent can gather selected from calcium dodecyl benzene sulfonate, alkyl sulfate, alkylsulfonate, alkylphenol-formaldehyde resin
One or more in oxygen vinethene etc.；
Dispersant can be selected from alkyl phenol sulfonate, alkyl ethyl sulfonate, polycarboxylate, NNO, sodium lignin sulfonate etc.
In one or more；
Emulsifying agent can selected from Nongru-700 #, agriculture breast 2201#, Span60, agriculture breast 1601#,
One or more in TERSPERSE2500 etc.；
Solvent can be selected from one or more in toluene, dimethylbenzene, methyl alcohol, methyl oleate, acetone etc..
When microemulsion is configured to, it is adjuvant used including：
Solvent can be selected from dimethylbenzene, acetone, methyl alcohol, ethanol, cyclohexanone, ethyl acetate, dimethylformamide, N- methyl
One or more in pyrrolidones, dimethyl sulfoxide (DMSO), diethyl phthalate, dibutyl phthalate etc.；
Emulsifying agent can be selected from APES, styryl phenol polyethenoxy ether, alkaryl phenol polyethenoxy
Ether phosphate, castor oil polyoxyethylene ether, alkylbenzenesulfonate, alkylphenol-polyethenoxy phosphate castor oil, dodecyl sulphur
One or more in sour sodium, potassium chloride, sodium sulphate etc.；
Thickener can be selected from polyvinyl alcohol, polyvinyl acetate, xanthans, gum arabic, phenolic resin, carboxymethyl
One or more in cellulose, sodium alginate etc.；
Defoamer can be selected from silicone emulsion, the fatty acid ester compounded thing of higher alcohols, polyoxyethylene polyoxypropylene pentaerythrite
Ether, polyoxyethylene polyoxy propyl alcohol amidogen ether, polypropylene glycerol aether and polyoxyethylene polyoxypropylene glycerin ether, dimethyl silicone polymer
One or more in.
When aqua is configured to, it is adjuvant used including：
Wetting agent can be selected from dodecyl benzene sulfonate, alkyl poly glucoside, lauryl sodium sulfate, lauryl alcohol sulfuric acid
Sodium, dodecyl sulphate calcium, sodium butylnaphthalenesulfonate, alkylaryl polyoxyethylene polyoxypropylene ether again, AEO, alkane
One or more in base phenol polyethenoxy ether etc.；
Cosolvent can be selected from oleic acid glyceryl ester, ethylene glycol, polyethylene glycol, propane diols, glycerine and n-butanol etc.
One or more；
Solvent can be selected from one or more in toluene, dimethylbenzene, acetone, cyclohexanone, methyl alcohol, ethanol and water etc..
Salt such as polycarboxylate, lignosulfonates etc. described in above-mentioned auxiliary agent are sodium salt or calcium salt.
The herbicidal composition that the present invention is provided is mainly used in wheat paddock and prevents and kill off broad leaved weed, compared with prior art, this
Invention possesses following beneficial effect：
1st, Herbicidal combinations of the present invention are compounded using fluorine chloropyridine ester and bentazone, and two active components are in certain ratio range
Interior compounding shows fabulous synergistic function, and mixed composition significantly improves herbicidal effect compared with single dose, so as to drop
Low dosage, while peasant's drug cost is reduced, reduces adverse effect of the agricultural chemicals to ecological environment.
2nd, Herbicidal combinations of the present invention expand herbicide controlling spectrum so that a kind of medicament can simultaneously prevent and treat various weeds, there is provided
Wheat paddock main weeds are had good preventive effect by a kind of means of prevention extremely easily and effectively.
3rd, Herbicidal combinations of the present invention kill weeds using two kinds of different mechanisms of action, and medicament difference action characteristic is caused
Extremely strong mutual supplement with each other's advantages is produced between two kinds of active components, can effectively delay the generation and development of single dose resistance.
4th, Herbicidal combinations of the present invention can kill wheat paddock mainly miscellaneous to wheat safety on the premise of wheat is not injured
Grass.
【Specific embodiment】
In order to make the purpose , technical scheme and advantage of the present invention be clearer, present invention specific examples below
Illustrate, but be only limitted to this absolutely not.As described below is preferably embodiment of the invention, is used only for the description present invention, it is impossible to
Be interpreted as limitation of the present invention, it should be pointed out that be any modification, equivalent made within the spirit and principles in the present invention
Replace and improve, should be included within the scope of the present invention.
Example of formulations 1：52% fluorine chloropyridine ester bentazone wettable powder
By above-mentioned each component press formula rate it is well mixed after, frequent regulation for wettable powder method, i.e., preceding mixing,
Air-flow crushing, rear mixing, obtain 52% fluorine chloropyridine ester bentazone wettable powder.
Example of formulations 2：80% fluorine chloropyridine ester bentazone wettable powder
By above-mentioned each component press formula rate it is well mixed after, frequent regulation for wettable powder method, i.e., preceding mixing,
Air-flow crushing, rear mixing, obtain 80% fluorine chloropyridine ester bentazone wettable powder.
Example of formulations 3：41% fluorine chloropyridine ester bentazone water dispersible granules
By above-mentioned each component press formula rate it is well mixed after, frequent regulation for water dispersible granules method, i.e., preceding mixing,
Air-flow crushing, mix afterwards, the kneading that adds water, granulation, screening, obtain 41% fluorine chloropyridine ester bentazone water dispersible granules.
Example of formulations 4：66% fluorine chloropyridine ester bentazone water dispersible granules
By above-mentioned each component press formula rate it is well mixed after, frequent regulation for water dispersible granules method, i.e., preceding mixing,
Air-flow crushing, mix afterwards, the kneading that adds water, granulation, screening, obtain 66% fluorine chloropyridine ester bentazone water dispersible granules.
Example of formulations 5：25.25% fluorine chloropyridine ester bentazone dispersibles oil-suspending agent
By above-mentioned each component press formula rate it is well mixed after, the standby method for dispersibling oil-suspending agent of frequent regulation grinds
Mill or high speed shear dispersion, obtain 25.25% fluorine chloropyridine ester bentazone and dispersible oil-suspending agent.
Example of formulations 6：29% fluorine chloropyridine ester bentazone missible oil
Fluorine chloropyridine ester and bentazone are first dissolved complete with part acetone, then remaining auxiliary agent is sequentially added, finally used
Acetone complements to 100%, is mixed into homogeneous oil phase and obtains final product the 29% fluorine chloropyridine ester bentazone missible oil.
Example of formulations 7：18% fluorine chloropyridine ester bentazone microemulsion
By above-mentioned each component press formula rate it is well mixed after, frequent regulation for microemulsion method, i.e. stirring or at a high speed
Shear agitation, obtains 18% fluorine chloropyridine ester bentazone microemulsion.
Example of formulations 8：34% fluorine chloropyridine ester bentazone aqua
Above-mentioned each component is pressed into formula rate and mixes agitated uniform, obtain final product the 34% fluorine chloropyridine ester bentazone water
Agent.
It is raw to survey embodiment 1：
Fluorine chloropyridine ester and bentazone cauline leaf process synergy toxicity determination test
In order to prevent and treat the wheat paddock broad leaved weed in agricultural production, inventor have studied fluorine chloropyridine ester and bentazone compounding
Herbicidal effect, and with the abundant methods of Sun Yun evaluate the two different proportion it is mixed after synergy type, be fluorine chloropyridine ester and go out
The rational mixture of careless pine provides scientific basis.Experiment reference《The part of farm-chemical indoor determination test rule herbicide the 4th》.
1st, experimental condition
1.1 for examination weeds
Corn gromwell, shepherd's purse, piemarker, lamb's-quarters；
1.2 reagent agents
Fluorine chloropyridine ester
Bentazone
2nd, examination material prepares
Culture for trying weeds uses potted plant cultivation.With 11 × 12cm plastic tubs, it is placed in shallow-water tank, will make
The soil adopted back in the farmland of used herbicide is air-dried, and basin is filled after sieving, and in basin at dry ground quantitative 4/5, P in soil H values 7.0 have
Machine matter content 1.2%.Soil is set to moisten completely using basin alms bowl bottom infiltrating irrigation mode.To pre-process and quantitatively spread for examination weed seed
Soil surface is sowed at, according to seed size earthing 0.5cm-1.0cm, 28-32 DEG C/18-25 DEG C of indoor temperature (d/n) is relatively wet
Degree 75% ± 15%.The bottom infiltrating irrigation mode moisturizing of basin alms bowl is used in incubation, keeps soil to be sufficiently humidified so as to.After weeds emerge
Corn gromwell, shepherd's purse, piemarker, lamb's-quarters are respectively set to 5 plants.
3rd, experimental design
The experiment sets 46 treatment altogether, wherein fluorine chloropyridine ester set 2,4,6,8,10g a.i./hm25 dosage treatment,
Bentazone sets 25,50,100,150,200g a.i./hm25 dosage treatment.Fluorine chloropyridine ester is mixed with both bentazones to set 7
Assemble than treatment：1:1600、1:400、1:100、1:25、4:25、16:25、64:25, dosage is 15,30,45,60,
75ga.i./hm2, 1 clear water control is separately set, 46 treatment, are repeated 4 times altogether.
4th, application method
The dispenser time limit carries out cauline leaf spraying treatment when being scheduled on weeds 2-4 leaf phase, is placed in (ASS -4 type agricultural chemicals the spray of spray in tower
Spill system, DG8003 shower nozzles, atomisation pressure 2.75MPa, spouting liquid 30kg/ mus), seen after being placed in be cultivated in greenhouse after natural air drying
Examine.
5th, data survey and statistical analysis
The damage symptoms of weeds are recorded after dispenser in detail, 20 days after treatment, fresh weight measurement is carried out, and compared with control treatment
Compared with calculating weeds fresh weight preventive effect.By the linear regression analysis between the niqueMin of preventive effect and the logarithm value of series concentration, calculate
Go out the ED of each treatment50And coefficient correlation, each treatment is evaluated to the bioactivity of weeds, calculate different agents with the abundant methods of Sun Yun
The co-toxicity coefficient of proportioning, evaluates the synergy situation of different ratio, determines the optimum activity ratio of fluorine chloropyridine ester and bentazone.
The abundant method computing formula of Sun Yun：
In formula：E --- fresh weight preventive effect；
C --- control weeds aerial part weeds fresh weight；
T --- treatment weeds aerial part weeds fresh weight.
In formula：ATI --- mixture surveys toxicity index；
The ED of S --- standard herbicide50, unit is gram per hectare (g a.i./hm2)；
The ED of M --- mixture50, unit is gram per hectare (g a.i./hm2)。
TTI=TIA×PA+TIB×PB……………………………………………(3)
In formula：TTI --- mixture theoretical toxicity index；
TIA--- A medicament toxicity index；
PA--- percentage composition of the A medicaments in mixture, unit is percentage (%)；
TIB--- B medicament toxicity index；
PB--- percentage composition of the B medicaments in mixture, unit is percentage (%)；
In formula：CTC --- co-toxicity coefficient；
ATI --- mixture surveys toxicity index；
TTI --- mixture theoretical toxicity index.
Co-toxicity coefficient CTC >=120 of built agent show as synergistic effect；CTC≤80 show as antagonism；80 ＜ CTC
＜ 120 shows as summation action.
6th, result and analysis in table 1-4
The fluorine chloropyridine ester of table 1 and bentazone mixture prevent and treat the virulence of weeds of wheat corn gromwell
The fluorine chloropyridine ester of table 2 and bentazone mixture prevent and treat the virulence of weeds of wheat shepherd's purse
The fluorine chloropyridine ester of table 3 and bentazone mixture prevent and treat the virulence of weeds of wheat piemarker
The fluorine chloropyridine ester of table 4 and bentazone mixture prevent and treat the virulence of weeds of wheat lamb's-quarters
Toxicity Determination result shows that fluorine chloropyridine ester and bentazone compare 1 in weight:1600-64:Mixed in the range of 25
With weeds are shown as with addition or synergistic effect, 1 is compared in weight:400-16:Being used with the range of 25 has preferable synergistic effect,
Compare 1 in weight:100-4:Being used with the range of 25 has obvious synergistic effect, expands control of weeds spectrum, has reached effectively anti-
Except the purpose of wheat paddock broad leaved weed.
It is raw to survey embodiment 2：
The Security test experiment of fluorine chloropyridine ester and bentazone compounding cauline leaf process to wheat
In order to study fluorine chloropyridine ester and bentazone compounding cauline leaf process to the security of wheat, it is fluorine chloropyridine ester and goes out
The rational mixture of careless pine provides scientific basis, and inventor has done tests below, and experiment is with reference to People's Republic of China's agricultural industry
Standard NY/T1155.8-2007 farm-chemical indoor determinations test rule-herbicide, the 8th part：The safety testing of crop
Cauline leaf spray-on process.
1st, experimental condition
1.1 for studying thing
Wheat
1.2 for examination weeds
Lamb's-quarters
1.3 reagent agents
Fluorine chloropyridine ester
Bentazone
2nd, examination material prepares
2.1 for studying thing
For studying the culture of thing using greenhouse pot culture method, with 11 × 12cm plastic tubs, it is placed in shallow-water tank, will make
The soil adopted back in the farmland of used herbicide is air-dried, and basin is filled after sieving, and in basin at dry ground quantitative 4/5, P in soil H values 7.0 have
Machine matter content 1.2%.After soil is moistened completely using top pouring mode, wheat seed is quantitatively broadcasted sowing in soil surface,
Earthing 0.5-1.0cm, 28-32 DEG C/18-25 DEG C of indoor temperature (d/n), relative humidity 75% ± 15%.With basin in incubation
To saturation state, wheat is set to 10 plants to the moisturizing of alms bowl bottom infiltrating irrigation mode after emerging per basin.
2.2 for examination weeds
Culture for trying weeds uses greenhouse pot culture method, with 11 × 12cm plastic tubs, is placed in shallow-water tank, will not make
The soil adopted back in the farmland of used herbicide is air-dried, and basin is filled after sieving, and in basin at dry ground quantitative 4/5, P in soil H values 7.0 have
Machine matter content 1.2%.After soil is moistened completely using basin alms bowl bottom infiltrating irrigation mode, will pre-process and quantified for examination weed seed
Broadcast sowing in soil surface, earthing 0.5-1.0cm, 28-32 DEG C/18-25 DEG C of indoor temperature (d/n), relative humidity 75% ± 15%.
With basin alms bowl bottom infiltrating irrigation mode moisturizing to saturation state, 10 plants are set to per basin after weeds emerge.
3rd, experimental design
3.1 weeds dispenser dosage
Experiment sets 36 treatment altogether, wherein fluorine chloropyridine ester set 2,3,4,5,6g a.i./hm25 dosage treatment, weed eradication
Pine sets 20,40,60,80,100g a.i./hm25 dosage treatment.Fluorine chloropyridine ester is mixed with both bentazones to be set 5 and assembles ratio
Treatment：1:400、1:100、1:25、4:25、16:25, dosage is 20,30,40,50,60g a.i./hm2, separately set 1 clear water
Control, 36 treatment, are repeated 4 times altogether.
3.2 crop dispenser dosage
Experiment sets 36 treatment altogether, wherein fluorine chloropyridine ester set 10,15,20,25,30g a.i./hm2At 5 dosage
Reason, bentazone sets 200,300,400,500,600g a.i./hm25 dosage treatment.Both fluorine chloropyridine ester and bentazone are mixed
Assembled than treatment with setting 5：1:400、1:100、1:25、4:25、16:25, dosage is 150,200,250,300,350g
a.i./hm2, 1 clear water control is separately set, 36 treatment, are repeated 4 times altogether.
4th, application method
The dispenser time limit is scheduled on wheat 3-4 leaf phases, weeds 2-5 carries out cauline leaf spraying treatment during the leaf phase, is placed in spray in tower
(ASS -4 type pesticide spraying system, DG8003 shower nozzles, atomisation pressure 2.75MPa, spouting liquid 30kg/ mus), after after natural air drying
It is placed in and observation is cultivated in greenhouse.
5th, data survey and statistical analysis
5.1 crops are investigated
After dispenser, investigate each treatment wheat whether there is symptom of chemical damage, record symptom of chemical damage in detail if having, weigh within 45 days after medicine
Each treatment wheat fresh weight, calculates fresh weight inhibition, with clear and definite test medicine to the security of wheat.
5.2 weedy rices
The damage symptoms (such as growth inhibition, chlorosis, deformity) of weeds are recorded after dispenser in detail, in 45 days after medicine, is weighed
Each treatment weeds aerial part fresh weight, the fresh weight preventive effect of weeds is calculated using growth inhibition assay.
5.3 growth inhibition assay computing formula
In formula：
E-fresh weight preventive effect, unit is percentage (%)；
T0- control weeds aerial part fresh weight, unit for gram；
T1- treatment weeds aerial part fresh weight, unit for gram.
5.4 selectivity index computational methods
6th, result and analysis in table 5-7
Preventive effect of the fluorine chloropyridine ester of table 5 mixtures' ratio different with bentazone to lamb's-quarters
Security of the fluorine chloropyridine ester of table 6 mixtures' ratio different with bentazone to wheat
Selectivity index of the fluorine chloropyridine ester of table 7 mixtures' ratio different with bentazone to wheat
Note：Data are by data application DPS2000 data handling systems (Tang Qiyi, Feng Mingguang realities in table 5, table 6 in table 7
With statistical analysis and its DPS data handling systems [M] Beijing：Science Press, 2002.188-201) be calculated.
When selectivity index >=4, represent that selectivity of the medicament between crop and weeds is very high；When 2≤selectively refer to
During number ＜ 4, represent that medicament has selectivity between crop and weeds；As selectivity index ＜ 2, represent medicament in crop and
Poor selectivity between weeds.Security test experiment to wheat shows that fluorine chloropyridine ester and bentazone compare 1 in weight:
400-16:Used with the range of 25 and 2 are more than to wheat selectivity index, to wheat safety.
It is raw to survey embodiment 3
Eliminating weed in wheat field field control effectiveness test I：
1st, test process
Test and set 11 treatment, 4 repetitions, totally 44 treatment cells, often process 20 square metres of plot area, random district's groups
Arrangement.(1)-(9) 52% fluorine chloropyridine ester bentazone wettable powder is reagent agent, the fluorine chloropyridine of (10)-(11) 10%
Ester water dispersible granules and 40% bentazone aqua are comparison medicament.Every mu is watered 30 kilograms, using 552 third type sprayer (0.7mm
Aperture) even spraying.Field main weeds have corn gromwell, shepherd's purse, volume stem smartweed, piemarker, lamb's-quarters, benbie etc..
2nd, pilot project and method
(1) security：After dispenser, the situation of growing of wheat is investigated, evaluate security of the reagent agent to wheat.
(2) herbicidal effect：Random per cell to take at 4 points, every is investigated 1/4 square metre, investigation weed control in 45 days after dispenser
Effect, records weeds species and strain number respectively, calculates weeds strain preventive effect.
3rd, result of the test
(1) security：Investigated after dispenser, (1)-(9) chemicals treatment districts Plant Height in Wheat, leaf color and blank district basic
Cause, and (10)-(11) treatment region wheat to show leaf chlorosis, plant strain growth suppressed, wheat seeding height is uneven to wait symptom of chemical damage,
Show the fluorine chloropyridine ester bentazone wettable powder of reagent agent (1)-(9) 52% to wheat safety.
(2) herbicidal effect：It is shown in Table 8
45 days various weed control efficacies after the medicine of table 8
Note：(1) 52% fluorine chloropyridine ester bentazone wettable powder (1:400)
(2) 52% fluorine chloropyridine ester bentazone wettable powders (1:200)
(3) 52% fluorine chloropyridine ester bentazone wettable powders (1:100)
(4) 52% fluorine chloropyridine ester bentazone wettable powders (1:50)
(5) 52% fluorine chloropyridine ester bentazone wettable powders (1:25)
(6) 52% fluorine chloropyridine ester bentazone wettable powders (2:25)
(7) 52% fluorine chloropyridine ester bentazone wettable powders (4:25)
(8) 52% fluorine chloropyridine ester bentazone wettable powders (8:25)
(9) 52% fluorine chloropyridine ester bentazone wettable powders (16:25)
(10) 10% fluorine chloropyridine ester water dispersible granules
(11) 40% bentazone aquas
(12) blank
As shown in Table 8,52% fluorine chloropyridine ester bentazone wettable powder of different ratio is to common weed strain preventive effect
Between 86.38%-97.71%, the fluorine chloropyridine ester water dispersible granules of comparison medicament 10% and 40% bentazone aqua are superior to
(weeds strain preventive effect is respectively 67.40% and 64.10%).Wherein fluorine chloropyridine ester and bentazone are 1 in weight ratio:400-16:
There is obvious preventive effect when 25 to wheat paddock common weed, weeds strain preventive effect is all more than 86%；Fluorine chloropyridine ester and bentazone exist
Weight ratio is 1:200-8:When 25 to wheat paddock common weed preventive effect preferably, weeds strain preventive effect is all more than 90%；And fluorine chlorine pyrrole
Pyridine ester and bentazone weight ratio are 1:Preventive effect is more up to 97.71% when 25.Thus illustrate, the weight of fluorine chloropyridine ester and bentazone
Amount ratio is 1:400-16:When in the range of 25, the broad leaved weed common to wheat paddock has good preventive effect, and this herbicide group
Compound is to wheat safety.
Eliminating weed in wheat field field control effectiveness test II：
1st, test process
(1) 10% fluorine chloropyridine ester bentazone wettable powder (1:25) 130g/ mus
(2) 52% fluorine chloropyridine ester bentazone wettable powders (1:25) 25g/ mus
(3) 80% fluorine chloropyridine ester bentazone wettable powders (1:25) 16.25g/ mus
Test and set 3 treatment, 4 repetitions, totally 12 treatment cells, often process 20 square metres of plot area, random district's groups
Arrangement.(1)-(3) fluorine chloropyridine ester bentazone wettable powder is reagent agent, and every mu is watered 30 kilograms, using 552 third types
Sprayer (0.7mm apertures) even spraying.Field main weeds have corn gromwell, shepherd's purse, volume stem smartweed, piemarker, lamb's-quarters, benbie etc..
2nd, pilot project and method
Herbicidal effect：Random per cell to take at 4 points, every is investigated 1/4 square metre, 45 days investigation weed control effects after dispenser
Really, weeds species and strain number are recorded respectively, calculate weeds strain preventive effect.
3rd, result of the test：Herbicidal effect is shown in Table 9
45 days various weed control efficacies after the medicine of table 9
Note：(1) 10% fluorine chloropyridine ester bentazone wettable powder (1:25)
(2) 52% fluorine chloropyridine ester bentazone wettable powders (1:25)
(3) 80% fluorine chloropyridine ester bentazone wettable powders (1:25)
As shown in Table 9, when the weight ratio of fluorine chloropyridine ester and bentazone is 1:When 25, the fluorine chloropyridine ester of different content
Bentazone wettable powder more than 96%, shows fluorine chloropyridine ester and bentazone weight ratio for most common weed strain preventive effect
During good ratio, the herbicidal composition of different activities component content has significant preventive effect to weeds.
In sum, rationally, activity when preventive effect is administered alone better than each component is miscellaneous to wheat paddock broad-leaved for instant component
Grass has preferable preventive effect, expands control of weeds spectrum, has delayed the generation of herbicide resistance, to crop safety, meet
The security requirement of pesticidal preparations.
Claims (7)
1. a kind of herbicidal composition, it is characterised in that said composition includes fluorine chloropyridine ester and bentazone two kinds of active components,
Two active component weight ratios are：Fluorine chloropyridine ester:Bentazone=1:400-16:25.
2. herbicidal composition according to claim 1, it is characterised in that active component weight ratio is：Fluorine chloropyridine ester:
Bentazone=1:200-8:25.
3. herbicidal composition according to claim 2, it is characterised in that active component weight ratio is：Fluorine chloropyridine ester:
Bentazone=1:100-4:25.
4. herbicidal composition according to claim 3, it is characterised in that active component weight ratio is：Fluorine chloropyridine ester:
Bentazone=1:50-2:25.
5. herbicidal composition according to claim 4, it is characterised in that active component weight ratio is：Fluorine chloropyridine ester:
Bentazone=1:25.
6. the herbicidal composition according to any one of claim 1-5, it is characterised in that active component is in herbicide group
Weight percentage in compound is 5-85%.
7. herbicidal composition according to claim 1, it is characterised in that said composition can be appointing of agriculturally allowing
A kind of formulation.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101808520A (en) * | 2007-08-27 | 2010-08-18 | 陶氏益农公司 | Synergistic herbicidal composition containing certain pyridine or pyrimidine carboxylic acids and certain cereal and rice herbicides |
| CN102245020A (en) * | 2008-11-24 | 2011-11-16 | 陶氏益农公司 | Safening composition of 6-(trisubstituted phenyl)-4-amino-2-pyridinecarboxylate herbicides and cloquintocet-mexyl for cereal crops |
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2016
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101808520A (en) * | 2007-08-27 | 2010-08-18 | 陶氏益农公司 | Synergistic herbicidal composition containing certain pyridine or pyrimidine carboxylic acids and certain cereal and rice herbicides |
| CN102245020A (en) * | 2008-11-24 | 2011-11-16 | 陶氏益农公司 | Safening composition of 6-(trisubstituted phenyl)-4-amino-2-pyridinecarboxylate herbicides and cloquintocet-mexyl for cereal crops |
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