CN108184865A - A kind of herbicidal composition containing Oxyfluorfen - Google Patents
A kind of herbicidal composition containing Oxyfluorfen Download PDFInfo
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- CN108184865A CN108184865A CN201711492000.8A CN201711492000A CN108184865A CN 108184865 A CN108184865 A CN 108184865A CN 201711492000 A CN201711492000 A CN 201711492000A CN 108184865 A CN108184865 A CN 108184865A
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- Prior art keywords
- oxyfluorfen
- pyrrole grass
- sulfone pyrrole
- weeds
- grass azoles
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- CASLETQIYIQFTQ-UHFFFAOYSA-N CC(C)(C1)ON=C1S(Cc(c(C(F)(F)F)n[n]1C)c1OC(F)F)(=O)=O Chemical compound CC(C)(C1)ON=C1S(Cc(c(C(F)(F)F)n[n]1C)c1OC(F)F)(=O)=O CASLETQIYIQFTQ-UHFFFAOYSA-N 0.000 description 1
Classifications
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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
- A01N43/80—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 five-membered rings with one nitrogen atom and either one oxygen atom or one sulfur atom in positions 1,2
-
- 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
- A01N33/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic nitrogen compounds
- A01N33/16—Biocides, pest repellants or attractants, or plant growth regulators containing organic nitrogen compounds containing nitrogen-to-oxygen bonds
- A01N33/18—Nitro compounds
- A01N33/20—Nitro compounds containing oxygen or sulfur attached to the carbon skeleton containing the nitro group
- A01N33/22—Nitro compounds containing oxygen or sulfur attached to the carbon skeleton containing the nitro group having at least one oxygen or sulfur atom and at least one nitro group directly attached to the same aromatic ring system
Abstract
The invention discloses a kind of herbicidal composition, specifically disclose it is a kind of using sulfone pyrrole grass azoles and Oxyfluorfen as active constituent for preventing and kill off the herbicidal composition of soybean weeds, the weight ratio of active constituent sulfone pyrrole grass azoles and Oxyfluorfen is 1 in the composition:25‑25:1, the weight percentage of active constituent in the composition is 5 90%.This complex weedicide can be prepared into the dosage forms such as wettable powder, water dispersible granules, missible oil, suspending agent, microemulsion, herbicidal composition of the present invention can prevent and kill off various weeds in Soybean Field simultaneously, significantly improve the preventive effect to soybean weeds, effective ingredient consumption is few, use cost is low, it is a kind of ideal herbicide to soybean and succession crop safety.
Description
【Technical field】
The invention discloses a kind of herbicide composition for soybean field, specifically disclose a kind of with sulfone pyrrole grass azoles and ethoxy fluorine grass
Ether is used to prevent and kill off the herbicidal composition of soybean weeds for active constituent.
【Background technology】
Soybean is the important cereal crops and oil crops in China, is also important non-staple food raw material, annual growing surface
Nearly ten million hectare of product.Legume growth early stage plant hat level of coverage is small, easily grows a variety of grass family, broad leaved weed, mainly
Weeds have barnyard grass, green bristlegrass, lady's-grass, eleusine indica, Siberian cocklebur, acalypha copperleaf, black nightshade, lamb's-quarters, purslane, piemarker etc..Chemical method weeding
It is one of main means of soybean weeds prevention and control, being easy to cause weeds using single kind compound herbicide generates anti-medicine
Property.Meanwhile grass during soybean weeds generation is mutually complicated, the polymorphic types weeds such as grassy weed, broad leaved weed mix life, use list
The defects of one type compound herbicide can be shown in a certain respect and limitation, it is impossible to kill Tanaka weeds completely.In recent years
It is mainly fomesafen, Acetochlor, isopropyl methoxalamine, sethoxydim, chlorimuronethyl, isopropyl grass to carry out the herbicide that Soybean Field uses
Amine and its complex preparation due to the resistance problem of weeds, certainly will will increase dosage, so as to cause environmental problem, cost problem,
The appearance of food-safety problem.In order to reduce agriculture production cost, promote agro based economic development, there is an urgent need to a kind of novel to remove
Careless agent substitute products.
Sulfone pyrrole grass azoles (Pyroxasulfone), other titles：Send Roc herbicide sulfone, Bi Evil herbicide sulfones, chemical name：3-
[5- (difluoro-methoxy) -1- methyl -3- (trifluoromethyl) pyrazoles -4- ylmethyls sulfonyl] -4,5- dihydro -5,5- dimethyl -
1,2- oxazole, structural formula are：
Sulfone pyrrole grass azoles is the novel pyrazoles weeding for being found and being formulated by prosperous centre of paddy in Japanese K-I chemistry institutes etc. earliest
Agent.For the herbicide available for soil treatment before the bud of most of the crop fields, mechanism of action is approximate with Acetochlor, can be by weeds root
It is absorbed with young shoot, inhibits seeding previous vigor, but it also has novel mechanism of action, it can be by the way that long chain fatty acids be interfered to give birth to
Object synthesizes to inhibit weeds growth of seedling.It can be applied to a system such as corn and soybean, cotton, peanut, wheat, sunflower, potato
Row crop can effectively prevent and kill off grassy weed and part broad leaved weed, such as lady's-grass, barnyard grass, green bristlegrass, eleusine indica, but to big
Part broad leaved weed preventive effect is poor.
Oxyfluorfen (Oxyfluorfen), chemical name：2- chloro- α, α, α-trifluoro p-methylphenyls-(3- ethyoxyls -4-
Nitrobenzophenone) ether, structural formula is：
Oxyfluorfen be the bud developed by Rhom and Hass of the U.S. before, the highly selective hexichol that is used after bud
Ether-derivative herbicides.The herbicide is contact killing type herbicide, its activity of weeding is played in the case where there is light.It mainly passes through plumule
Sheath, mesocotyl enter in plant, less through root absorption, and have denier to be transported up entering leaf portion by root.Have
The features such as high and low residual of broad weed-killing spectrum, weeding ratio, mu dosage are lacked.Available for cotton, peanut, soybean, beet, fruit tree and
Before vegetable fields bud, after bud apply prevent and kill off the weeds such as lamb's-quarters, purslane, shepherd's purse, black nightshade and nutgrass flatsedge, to most of perennial weeds without
Effect.
Have many document reports and cross the herbicidal composition containing sulfone pyrrole grass azoles or Oxyfluorfen, such as patent
CN201410541357.0 discloses Oxyfluorfen with sulfentrazone and pendimethalin compounding for Soybean Field weeding, but should
Composition is bad to the preventive effect of part broad leaved weed；Patent CN201510712580.1 discloses sulfone pyrrole grass azoles and trifluoro grass piperazine
Suspension agent composition, can be applied to Soybean Field, wheat paddock and cornfield weeding, but the composition to Soybean Field nutgrass flatsedge preventive effect compared with
Difference.
For each single dose more than making up and complex preparation existing deficiency in actual use, the present inventor are reported
It furthers investigate, is had been surprisingly found that on the basis of the screening of a large amount of formula indoor and field control effectiveness test, sulfone pyrrole grass azoles and second
Oxygen fluofazone compounds in certain ratio range, to soybean weeds have excellent control effect, the preventive effect shown and
Activity level exceeds the superposition of each component, has unexpected synergistic function, solves both the above herbicide and killing
Grass spectrum, preventive effect and limitation present on safety have achieved the purpose that expand herbicide controlling spectrum, have improved preventive effect, improve safety.
【Invention content】
It is an object of the invention to the present situation according to current soybean field herbicide and soybean weeds, a situation arises,
A kind of safe efficient, wide spectrum herbicidal composition for Soybean Field weeding is provided.
Purpose to realize the present invention, the present invention provides a kind of herbicidal composition, by a effective amount of sulfone pyrrole grass azoles
It is formed with Oxyfluorfen two kinds of active components.
The weight ratio of the active constituent sulfone pyrrole grass azoles and Oxyfluorfen is 1:25-25:1, preferably：1:15-15:1,
Further preferably：1:5-5:1, still more preferably for：1:3-3:1, optimal proportion 1:1, two active constituents are in herbicide
Weight percentage in composition is 5-90%.
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 water dispersible granules, wettable powder, missible oil, suspending agent, microemulsion etc.
It is suitble to the various dosage forms of agricultural use, preferred dosage form is missible oil.
When being configured to water dispersible granules, it is adjuvant used including：
Dispersant can be selected from polycarboxylate, lignosulfonates, alkylnaphthalene sulfonate, neopelex or alkane
It is one or more in base polyethenoxy ether sulphonate etc.；
Wetting agent can be in naphthalene sulfonate, lauryl sodium sulfate, aliphatic alcohol sulfate or alkylsulfonate etc.
It is one or more；
Disintegrant can be selected from ammonium sulfate, urea, starch and its derivative, low-substituted hydroxypropyl cellulose, polyethylene pyrrole
It is one or more in pyrrolidone, sodium alginate etc.；
Adhesive can be selected from hydroxyethyl cellulose, soluble starch, methylcellulose, polycarboxylic acid and water-soluble high score
It is one or more in sub- compound carboxymethyl sodium cellulosate etc.；
Carrier can be selected from white carbon, kaolin, bentonite, diatomite, precipitated calcium carbonate, gypsum, attapulgite, urine
It is one or more in element, sucrose etc..
When being configured to wettable powder, it is adjuvant used including：
Dispersant can be selected from lignosulfonates, polycarboxylate, alkylnaphthalene sulfonate, neopelex, alkane
It is 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, naphthalene sulfonate, aliphatic alcohol sulfate or alkyl
It is one or more in sulfate etc.；
Carrier can be selected from one or more in kaolin, diatomite, attapulgite, bentonite, white carbon etc..
When being configured to missible oil, it is adjuvant used including：
Wetting agent can be selected from calcium dodecyl benzene sulfonate, alkyl sulfate, alkylsulfonate, alkylphenol-formaldehyde resin and gather
It is one or more in ethylene oxide ether etc.；
Dispersant can be selected from alkyl phenol sulfonate, alkyl ethyl sulfonate, polycarboxylate, NNO, sodium lignin sulfonate etc.
In it is one or more；
Emulsifier can be selected from Nongru-700 #, agriculture breast 2201#, Span60, agriculture breast 1601#,
It is one or more in TERSPERSE2500 etc.；
Solvent can be selected from one or more in toluene, dimethylbenzene, methanol, methyl oleate, acetone etc..
For suspending agent, can used additives include：
Dispersant is selected from polycarboxylate, lignosulfonates, alkylnaphthalene sulfonate, polyaryl phenol polyethenoxy ether phosphoric acid
It is one or more in ester, alkyl phenol polyoxyethylene ether etc.；
Wetting agent is selected from alkylphenol-polyethenoxy base ether formaldehyde condensation products sulfate, alkylphenol-polyethenoxy base ether phosphoric acid
It is one or more in ester, phenethyl phenol polyoxyethylene groups ether phosphate, alkyl sulfate, naphthalene sulfonate etc.；
One kind in xanthans, carboxymethyl cellulose, Sodium Polyacrylate, bentonite, aluminium-magnesium silicate etc. of thickener or
It is a variety of；
Antifreezing agent is one or more in ethylene glycol, propylene glycol, glycerine, urea etc.；Preservative is selected from sorbic acid, benzene
It is one or more in sodium formate etc.；
Antifoaming agent can be organic silicon antifoaming agent；
Appropriate amount of deionized water.
When being configured to microemulsion, it is adjuvant used including：
Solvent can be selected from dimethylbenzene, acetone, methanol, ethyl alcohol, cyclohexanone, ethyl acetate, dimethylformamide, N- methyl
One or more of pyrrolidones, dimethyl sulfoxide (DMSO), diethyl phthalate, dibutyl phthalate etc.；
Emulsifier can be selected from alkyl phenol polyoxyethylene ether, styryl phenol polyethenoxy ether, alkaryl phenol polyethenoxy
Ether phosphate, castor oil polyoxyethylene ether, alkylbenzenesulfonate, alkylphenol-polyethenoxy phosphate castor oil, dodecyl sulphur
One or more of sour sodium, potassium chloride, sodium sulphate etc.；
Thickener can be selected from polyvinyl alcohol, polyvinyl acetate, xanthans, gum arabic, phenolic resin, carboxymethyl
It is one or more in cellulose, sodium alginate etc.；
Antifoaming agent can be selected from silicone emulsion, the fatty acid ester compounded object of higher alcohols, polyoxyethylene polyoxypropylene pentaerythrite
Ether, polyoxyethylene polyoxy propyl alcohol amidogen ether, polypropylene glycerol aether and polyoxyethylene polyoxypropylene glycerin ether, dimethyl silicone polymer
It is one or more in.
Salt such as polycarboxylate, lignosulfonates etc. described in above-mentioned auxiliary agent are sodium salt or calcium salt.
Herbicidal composition provided by the invention is mainly used for preventing and kill off soybean weeds, compared with prior art, the present invention
Has following advantageous effect：
1st, herbicidal composition of the present invention is compounded using sulfone pyrrole grass azoles and Oxyfluorfen, and two active constituents are centainly matching
In the range of compounding show fabulous synergistic function, mixed composition significantly improves herbicidal effect compared with single dose, from
And dosage is reduced, while peasant's drug cost is reduced, reduce adverse effect of the pesticide to ecological environment.
2nd, herbicidal composition of the present invention expands herbicide controlling spectrum so that a kind of medicament can prevent a variety of weeds simultaneously, provide
Soybean Field main weeds are had good preventive effect by a kind of means of prevention extremely easily and effectively.
3rd, herbicidal composition of the present invention kills weeds using two different mechanisms of action, and medicament different role characteristic makes
Generate extremely strong mutual supplement with each other's advantages between two kinds of active components, can effectively delay the generation and development of single dose resistance.
4th, it is main can to prevent and kill off Soybean Field to soybean safety under the premise of soybean is not injured for herbicidal composition of the present invention
Weeds.
【Specific embodiment】
In order to make the purpose , technical scheme and advantage of the present invention be clearer, present invention specific examples below
It illustrates, but is only limitted to this absolutely not.As described below is the preferable embodiment of the present 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 made within the spirit and principles in the present invention, it is equivalent
It replaces and improves, should all be included in the protection scope of the present invention.
Example of formulations 1：24% sulfone pyrrole grass azoles oxyfluorfen EC
First sulfone pyrrole grass azoles and Oxyfluorfen are dissolved completely with part acetone, then remaining auxiliary agent is sequentially added, finally
100% is complemented to acetone, is mixed into homogeneous oil phase up to the 24% sulfone pyrrole grass azoles oxyfluorfen EC.
Example of formulations 2：36% sulfone pyrrole grass azoles oxyfluorfen EC
First sulfone pyrrole grass azoles and Oxyfluorfen are dissolved completely with part dimethylbenzene, then remaining auxiliary agent is sequentially added, most
100% is complemented to dimethylbenzene afterwards, is mixed into homogeneous oil phase up to the 36% sulfone pyrrole grass azoles oxyfluorfen EC.
Example of formulations 3：19% sulfone pyrrole grass azoles oxyfluorfen EC
First sulfone pyrrole grass azoles and Oxyfluorfen are dissolved completely with part methanol, then remaining auxiliary agent is sequentially added, finally
100% is complemented to methanol, is mixed into homogeneous oil phase up to the 19% sulfone pyrrole grass azoles oxyfluorfen EC.
Example of formulations 4：27% sulfone pyrrole grass azoles Oxyfluorfen wettable powder
By above-mentioned each component by formula rate after mixing, frequent regulation for wettable powder method, i.e., it is preceding mixing,
Air-flow crushing, rear mixing, obtain 27% sulfone pyrrole grass azoles Oxyfluorfen wettable powder.
Example of formulations 5：53.2% sulfone pyrrole grass azoles Oxyfluorfen wettable powder
By above-mentioned each component by formula rate after mixing, frequent regulation for wettable powder method, i.e., it is preceding mixing,
Air-flow crushing, rear mixing, obtain 53.2% sulfone pyrrole grass azoles Oxyfluorfen wettable powder.
Example of formulations 6：80% sulfone pyrrole grass azoles Oxyfluorfen wettable powder
By above-mentioned each component by formula rate after mixing, frequent regulation for wettable powder method, i.e., it is preceding mixing,
Air-flow crushing, rear mixing, obtain 80% sulfone pyrrole grass azoles Oxyfluorfen wettable powder.
Example of formulations 7：75% sulfone pyrrole grass azoles Oxyfluorfen water dispersible granules
By above-mentioned each component by formula rate after mixing, frequent regulation for water dispersible granules method, i.e., it is preceding mixing,
Air-flow crushing, rear mixing plus water are mediated, are granulated, screening, obtain 75% sulfone pyrrole grass azoles Oxyfluorfen water dispersible granules.
Example of formulations 8：59% sulfone pyrrole grass azoles Oxyfluorfen water dispersible granules
By above-mentioned each component by formula rate after mixing, frequent regulation for water dispersible granules method, i.e., it is preceding mixing,
Air-flow crushing, rear mixing plus water are mediated, are granulated, screening, obtain 59% sulfone pyrrole grass azoles Oxyfluorfen water dispersible granules.
Example of formulations 9：41% sulfone pyrrole grass azoles Oxyfluorfen suspending agent
By above-mentioned each component by formula rate after mixing, frequent regulation is for the method for suspending agent, i.e. high speed shear point
It dissipates, is sanded and crushes, reconcile, obtain 41% sulfone pyrrole grass azoles Oxyfluorfen suspending agent.
Example of formulations 10：35% sulfone pyrrole grass azoles Oxyfluorfen microemulsion
By above-mentioned each component by formula rate after mixing, frequent regulation is stirred, is cut at a high speed for the method for microemulsion
Stirring is cut, obtains 35% sulfone pyrrole grass azoles Oxyfluorfen microemulsion.
It is raw to survey embodiment 1：
Sulfone pyrrole grass azoles and Oxyfluorfen soil treatment synergy toxicity determination test
In order to prevent the soybean weeds in agricultural production, inventor has studied sulfone pyrrole grass azoles and Oxyfluorfen compounding
Herbicidal effect, and the synergy type after the two different proportion is used with is evaluated with the abundant methods of Sun Yun, it is sulfone pyrrole grass azoles and ethoxy fluorine
The rational mixture of careless ether provides scientific basis.Test reference《Farm-chemical indoor determination test rule herbicide third portion》.
1st, experimental condition
1.1 for examination weeds
Green bristlegrass, moleplant seed, acalypha copperleaf, cyperus iria；
1.2 reagent agent
Sulfone pyrrole grass azoles
Oxyfluorfen
2nd, examination material prepares
Potting cultivation is used for the culture for trying weeds.It with 11 × 12cm plastic tubs, is placed in shallow-water tank, will not make
The soil adopted back in the farmland of used herbicide air-dries, and basin is filled after sieving, and dry ground is quantified at 4/5 in basin, and P in soil H values 7.0 have
Machine matter content 1.2%.Soil is made to moisten completely using basin alms bowl bottom infiltrating irrigation mode.Pretreatment is quantitatively spread for examination weed seed
Soil surface is sowed at, according to seed size earthing 0.5cm-2.0cm, indoor temperature 28-32 DEG C/18-25 DEG C (d/n) is relatively wet
Degree 75% ± 15%.Using the bottom infiltrating irrigation mode moisturizing of basin alms bowl in incubation, soil is kept to be sufficiently humidified so as to.Sow standby for 24 hours
With.
3rd, experimental design
The experiment sets 46 processing altogether, wherein sulfone pyrrole grass azoles set 75,125,175,225,275g a.i./hm25 dosage
Processing, Oxyfluorfen sets 120,150,180,210,240g a.i./hm25 dosage processing.Sulfone pyrrole grass azoles and ethoxy fluorine grass
Both ether is mixed to be set 7 and assembles than processing：1:125、1:25、1:5、1:1、5:1、25:1、125:1, dosage is 120,150,
180、210、240g a.i./hm2, 1 clear water control is separately set, 46 processing, are repeated 4 times altogether.
4th, application method
Sowing is placed on spray (the type pesticide spraying systems of ASS -4, DG8003 nozzles, atomisation pressure in spray tower for 24 hours
2.75MPA, 30Kg/ mus of spouting liquid), it treats that natural air drying is placed in greenhouse and cultivates observation.
5th, data survey and statistical analysis
The damage symptoms of weeds are recorded after dispenser in detail, 30 days after processing, carry out fresh weight measurement, 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 of series concentration, calculate
Go out the ED of each processing50And related coefficient, each processing is evaluated to the bioactivity of weeds, and different agents are calculated 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 sulfone pyrrole grass azoles and Oxyfluorfen.
The abundant method calculation formula of Sun Yun：
In formula：E --- fresh weight preventive effect；
C --- control weeds aerial part weeds fresh weight；
T --- processing 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 are percentage (%)；
TIB--- B medicament toxicity index；
PB--- percentage composition of the B medicaments in mixture, unit are percentage (%)；
In formula：CTC --- co-toxicity coefficient；
ATI --- mixture surveys toxicity index；
TTI --- mixture theoretical toxicity index.
Co-toxicity coefficient CTC >=120 of compounding agent show as synergistic effect；CTC≤80 show as antagonism；80 ＜ CTC
＜ 120 shows as summation action.
6th, result and analysis
1 sulfone pyrrole grass azoles of table and the virulence of Oxyfluorfen mixture prevention soybean weeds green bristlegrass
The virulence of 2 sulfone pyrrole grass azoles of table and Oxyfluorfen mixture prevention soybean weeds moleplant seed
3 sulfone pyrrole grass azoles of table and the virulence of Oxyfluorfen mixture prevention soybean weeds acalypha copperleaf
The virulence of 4 sulfone pyrrole grass azoles of table and Oxyfluorfen mixture prevention soybean weeds cyperus iria
The Toxicity Determination result shows sulfone pyrrole grass azoles and Oxyfluorfen in weight ratio 1:125-125:In the range of 1
It is mixed that weeds are shown as with addition or synergistic effect, in weight ratio 1:25-25:Being used in the range of 1 has preferable synergistic effect,
In weight ratio 1:5-5:Being used in the range of 1 has apparent synergistic effect, expands control of weeds spectrum, has reached and effectively prevented and kill off greatly
The purpose of soybean weeds.
It is raw to survey embodiment 2：
Sulfone pyrrole grass azoles and Oxyfluorfen compounding soil treatment test the Security test of soybean
It is sulfone pyrrole grass azoles and second to study the safety of sulfone pyrrole grass azoles and Oxyfluorfen compounding soil treatment to soybean
The rational mixture of oxygen fluofazone provides scientific basis, and inventor has done tests below, and experiment is with reference to People's Republic of China's agricultural
Professional standard NY/T 1155.6-2006 farm-chemical indoor determination test rules-herbicide, the 6th part：The safety of crop
Test soil spray-on process.
1st, experimental condition
1.1 for studying object
Soybean varieties：Shandong beans 12
1.2 for examination weeds
Green bristlegrass
1.3 reagent agent
Sulfone pyrrole grass azoles
Oxyfluorfen
2nd, examination material prepares
2.1 for studying object
Culture for studying object with 11 × 12cm plastic tubs, is placed in culturing pot, will be not used using greenhouse pot culture method
It crosses the soil adopted back in the Soybean Field of herbicide to air-dry, basin is filled after sieving, dry ground is quantified at 4/5 in basin, and P in soil H values 7.0 have
Machine matter content 1.2%.After soil being made to moisten completely using basin alms bowl bottom infiltrating irrigation mode, the point of soya seeds quantitative and even is sowed at
Soil surface, earthing 1.0-2.0cm with the bottom infiltrating irrigation mode moisturizing of basin alms bowl, keep soil to be sufficiently humidified so as to.It is spare after sowing for 24 hours.
2.2 for examination weeds
Culture for trying weeds with 11 × 12cm plastic tubs, is placed in shallow-water tank, will not made using greenhouse pot culture method
The soil adopted back in the farmland of used herbicide air-dries, and basin is filled after sieving, and dry ground is quantified at 4/5 in basin, and P in soil H values 7.0 have
Machine matter content 1.2%.After soil being made to moisten completely using basin alms bowl bottom infiltrating irrigation mode, pretreatment is quantified for examination weed seed
It broadcasts sowing in soil surface, earthing 0.5-1.0cm, indoor temperature 28-32 DEG C/18-25 DEG C (d/n), relative humidity 75% ± 15%.
With basin alms bowl bottom infiltrating irrigation mode moisturizing to saturation state.It is spare after sowing for 24 hours.
3rd, experimental design
3.1 weeds dispenser dosage
Experiment sets 36 processing altogether, wherein sulfone pyrrole grass azoles set 25,50,75,100,125g a.i./hm2At 5 dosage
Reason, Oxyfluorfen sets 40,55,70,85,100g a.i./hm25 dosage processing.Both sulfone pyrrole grass azoles and Oxyfluorfen
It is mixed to set 5 and assemble than processing：1:25、1:5、1:、5:1、25:1, dosage is 40,55,70,85,100g a.i./hm2, separately set
1 clear water control, 36 processing, are repeated 4 times altogether.
3.2 crop dispenser dosage
Experiment sets 36 processing altogether, wherein sulfone pyrrole grass azoles set 150,300,450,600,750g a.i./hm25 dosage
Processing, Oxyfluorfen sets 170,290,410,530,650g a.i./hm25 dosage processing.Sulfone pyrrole grass azoles and ethoxy fluorine grass
Both ether is mixed to be set 5 and assembles than processing：1:25、1:5、1:1、5:1、25:1, dosage is 150,300,450,600,750g
a.i./hm2, 1 clear water control is separately set, 36 processing, are repeated 4 times altogether.
4th, application method
Sowing carries out soil spraying treatment afterwards for 24 hours, is placed in spray in tower (the type pesticide spraying systems of ASS -4, DG8003 sprays
Head, atomisation pressure 2.75MPa, 30kg/ mus of spouting liquid), it treats that natural air drying is placed in greenhouse and cultivates observation.
5th, data survey and statistical analysis
5.1 crops are investigated
After dispenser, investigate each processed soybeans whether there is symptom of chemical damage, record symptom of chemical damage, grade in detail if having, 30 after medicine
It measures each processed soybeans fresh weight, fresh weight inhibition rate is calculated, with safety of the clear and definite test medicine to soybean.
5.2 weedy rices
The damage symptoms (such as growth inhibition, chlorosis, deformity) of weeds are recorded after dispenser in detail, 30 days after medicine, are weighed
Each processing weeds aerial part fresh weight calculates the fresh weight preventive effect of weeds using growth inhibition assay.
5.3 growth inhibition assay calculation formula
In formula：
E-fresh weight preventive effect, unit are percentage (%)；
T0- control weeds aerial part fresh weight, unit are gram；
T1- processing weeds aerial part fresh weight, unit are gram.
5.4 selectivity index computational methods
6th, result and analysis in table 5-7
5 sulfone pyrrole grass azoles of table is with Oxyfluorfen difference mixtures' ratio to the preventive effect of green bristlegrass
6 sulfone pyrrole grass azoles of table and safety of the Oxyfluorfen difference mixtures' ratio to soybean
7 sulfone pyrrole grass azoles of table is with Oxyfluorfen difference mixtures' ratio to the selectivity index of soybean
Note：Data are that (Tang Qiyi, Feng Mingguang are real by data application DPS2000 data processing systems in table 5, table 6 in table 7
With statistical analysis and its DPS data processing 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 to soybean experiments have shown that, sulfone pyrrole grass azoles and Oxyfluorfen are in weight ratio 1:
25-25:It is used in the range of 1 and 2 is more than to soybean selectivity index, to soybean safety.
It is raw to survey embodiment 3
Prevent and kill off soybean weeds field control effectiveness test I：
1st, test process
Experiment sets 12 processing, and 4 repetitions, totally 48 processing cells, often handle 20 square metres of plot area, random district's groups
Arrangement.(1)-(9) 24% sulfone pyrrole grass azoles oxyfluorfen EC is reagent agent, and the 40% sulfone pyrrole grass azoles of (10)-(11) suspends
Agent and 24% oxyfluorfen EC are comparison medicament.It is watered 30 kilograms per acre, using 552 third type sprayers (0.7mm apertures)
Even spraying.Field main weeds have green bristlegrass, moleplant seed, eleusine indica, acalypha copperleaf, cyperus iria, black nightshade etc..
2nd, pilot project and method
(1) safety：After dispenser, the growth and development situation of soybean, safety of the evaluation reagent agent to soybean are investigated.
(2) herbicidal effect：Take at random per cell at 4 points, investigate 1/4 square metre, investigation weed control in 30 days after dispenser at every
Effect records weeds type and strain number respectively, calculates weeds strain preventive effect.
3rd, result of the test
(1) safety：It is investigated after dispenser, (1)-(9) chemicals treatment district soybean plant height, leaf color and blank district basic one
It causes, and (10)-(11) treatment region soybean roots go out the symptom of chemical damage such as leaf chlorosis, plant strain growth are suppressed, and bean seedlings height is uneven,
Show 24% sulfone pyrrole grass azoles oxyfluorfen EC of reagent agent (1)-(9) to soybean safety.
(2) herbicidal effect：It is shown in Table 8
30 days various weed control efficacies after 8 medicine of table
Note：(1) 24% sulfone pyrrole grass azoles oxyfluorfen EC (1:25)
(2) 24% sulfone pyrrole grass azoles oxyfluorfen ECs (1:15)
(3) 24% sulfone pyrrole grass azoles oxyfluorfen ECs (1:5)
(4) 24% sulfone pyrrole grass azoles oxyfluorfen ECs (1:3)
(5) 24% sulfone pyrrole grass azoles oxyfluorfen ECs (1:1)
(6) 24% sulfone pyrrole grass azoles oxyfluorfen ECs (3:1)
(7) 24% sulfone pyrrole grass azoles oxyfluorfen ECs (5:1)
(8) 24% sulfone pyrrole grass azoles oxyfluorfen ECs (15:1)
(9) 24% sulfone pyrrole grass azoles oxyfluorfen ECs (25:1)
(10) 40% sulfone pyrrole grass azole suspending agents
(11) 24% oxyfluorfen ECs
(12) blank control
As shown in Table 8,24% sulfone pyrrole grass azoles oxyfluorfen EC of different ratio exists to common weed strain preventive effect
Between 87.92%-97.90%, it is superior to 40% sulfone pyrrole grass azole suspending agent of comparison medicament and 24% oxyfluorfen EC (weeds
Strain preventive effect is respectively 65.86% and 66.24%).Wherein sulfone pyrrole grass azoles and Oxyfluorfen are 1 in weight ratio:25-25:When 1 pair
Soybean Field common weed has apparent preventive effect, and weeds strain preventive effect is all more than 87%；Sulfone pyrrole grass azoles and Oxyfluorfen are in weight
Than being 1:15-15:Preferable to Soybean Field common weed preventive effect when 1, weeds strain preventive effect is all more than 90%；And sulfone pyrrole grass azoles and second
Oxygen fluofazone weight ratio is 1:Preventive effect is more up to 97.90% when 1.Thus illustrate, the weight of sulfone pyrrole grass azoles and Oxyfluorfen
Than 1:25-25:When in the range of 1, there is good preventive effect to Soybean Field common weed, and this herbicidal composition is to soybean
Safety.
Prevent and kill off soybean weeds field control effectiveness test II：
1st, test process
(1) 12% sulfone pyrrole grass azoles oxyfluorfen EC (1:1) 200g/ mus
(2) 24% sulfone pyrrole grass azoles oxyfluorfen ECs (1:1) 100g/ mus
(3) 48% sulfone pyrrole grass azoles oxyfluorfen ECs (1:1) 50g/ mus
(4) blank control
Experiment sets 4 processing, and 4 repetitions, totally 16 processing cells, often handle 20 square metres of plot area, random district's groups
Arrangement.(1)-(3) sulfone pyrrole grass azoles oxyfluorfen EC is reagent agent, is watered 30 kilograms per acre, is sprayed using 552 third types
Device (0.7mm apertures) even spraying.Field main weeds have green bristlegrass, moleplant seed, eleusine indica, acalypha copperleaf, cyperus iria, black nightshade
Deng.
2nd, pilot project and method
Herbicidal effect：Take at random per cell at 4 points, investigate 1/4 square metre, 30 days investigation weed control effects after dispenser at every
Fruit records weeds type and strain number respectively, calculates weeds strain preventive effect.
3rd, result of the test：Herbicidal effect is shown in Table 9
30 days various weed control efficacies after 9 medicine of table
Note：(1) 12% sulfone pyrrole grass azoles oxyfluorfen EC (1:1)
(2) 24% sulfone pyrrole grass azoles oxyfluorfen ECs (1:1)
(3) 48% sulfone pyrrole grass azoles oxyfluorfen ECs (1:1)
(4) blank control
As shown in Table 9, when the weight ratio 1 of sulfone pyrrole grass azoles and Oxyfluorfen:When 1, the sulfone pyrrole grass azoles second of different content
Oxygen fluofazone missible oil more than 96%, shows that sulfone pyrrole grass azoles and Oxyfluorfen weight ratio are best to common weed strain preventive effect
During ratio, the herbicidal composition of different activities component content has weeds significant preventive effect.
In conclusion instant component is reasonable, activity when preventive effect is administered alone better than each component is equal to soybean weeds
There is preferable preventive effect, expand control of weeds spectrum, delayed the generation of herbicide resistance, to crop safety, met pesticide
The security requirement of preparation.
Claims (7)
1. a kind of herbicidal composition, which is characterized in that the composition include two kinds of activity of sulfone pyrrole grass azoles and Oxyfluorfen into
Point, two active constituent weight ratios are：Sulfone pyrrole grass azoles:Oxyfluorfen=1:25-25:1.
2. herbicidal composition according to claim 1, which is characterized in that active constituent weight ratio is：Sulfone pyrrole grass azoles:Second
Oxygen fluofazone=1:15-15:1.
3. herbicidal composition according to claim 2, which is characterized in that active constituent weight ratio is：Sulfone pyrrole grass azoles:Second
Oxygen fluofazone=1:5-5:1.
4. herbicidal composition according to claim 3, which is characterized in that active constituent weight ratio is：Sulfone pyrrole grass azoles:Second
Oxygen fluofazone=1:3-3:1.
5. herbicidal composition according to claim 4, which is characterized in that active constituent weight ratio is：Sulfone pyrrole grass azoles:Second
Oxygen fluofazone=1:1.
6. herbicidal composition according to any one of claims 1-5, which is characterized in that active constituent is in herbicide group
It is 5-90% to close the weight percentage in object.
7. herbicidal composition according to claim 1, which is characterized in that the composition can be times agriculturally allowed
A kind of dosage form.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108812662A (en) * | 2018-06-08 | 2018-11-16 | 山东省花生研究所 | A kind of Herbicidal combinations and its application containing sulfone pyrrole grass azoles and Oxyfluorfen |
| CN109938030A (en) * | 2019-01-29 | 2019-06-28 | 江苏瑞邦农药厂有限公司 | A kind of fluridone complex weedicide and preparation method thereof |
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| US20140135220A1 (en) * | 2012-11-13 | 2014-05-15 | Valent U.S.A., Corporation | Methods for post emergent weed control with Pyroxasulfone and Lactofen |
| WO2014095681A1 (en) * | 2012-12-18 | 2014-06-26 | Bayer Cropscience Ag | Herbicidal agents containing aclonifen |
| US20160143284A1 (en) * | 2014-11-24 | 2016-05-26 | Valent U.S.A., Corporation | Herbicide compositions for weed control |
| CN105724002A (en) * | 2016-01-28 | 2016-07-06 | 泰安市农业科学研究院 | High-yield pollution-free cultivation method for peanuts |
| CN107306971A (en) * | 2017-06-08 | 2017-11-03 | 上海虎印实业有限公司 | A kind of Herbicidal combinations containing the careless azoles of sulfone pyrrole and aclonifen |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140135220A1 (en) * | 2012-11-13 | 2014-05-15 | Valent U.S.A., Corporation | Methods for post emergent weed control with Pyroxasulfone and Lactofen |
| WO2014095681A1 (en) * | 2012-12-18 | 2014-06-26 | Bayer Cropscience Ag | Herbicidal agents containing aclonifen |
| US20160143284A1 (en) * | 2014-11-24 | 2016-05-26 | Valent U.S.A., Corporation | Herbicide compositions for weed control |
| CN105724002A (en) * | 2016-01-28 | 2016-07-06 | 泰安市农业科学研究院 | High-yield pollution-free cultivation method for peanuts |
| CN107306971A (en) * | 2017-06-08 | 2017-11-03 | 上海虎印实业有限公司 | A kind of Herbicidal combinations containing the careless azoles of sulfone pyrrole and aclonifen |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108812662A (en) * | 2018-06-08 | 2018-11-16 | 山东省花生研究所 | A kind of Herbicidal combinations and its application containing sulfone pyrrole grass azoles and Oxyfluorfen |
| CN109938030A (en) * | 2019-01-29 | 2019-06-28 | 江苏瑞邦农药厂有限公司 | A kind of fluridone complex weedicide and preparation method thereof |
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