CN106342866A - Herbicide composition for wheat field - Google Patents
Herbicide composition for wheat field Download PDFInfo
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- CN106342866A CN106342866A CN201610766685.XA CN201610766685A CN106342866A CN 106342866 A CN106342866 A CN 106342866A CN 201610766685 A CN201610766685 A CN 201610766685A CN 106342866 A CN106342866 A CN 106342866A
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- Prior art keywords
- pyrasulfotole
- mesosulfuron
- bensulfuron
- methyl
- 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
- A01N47/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid
- A01N47/08—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid the carbon atom having one or more single bonds to nitrogen atoms
- A01N47/28—Ureas or thioureas containing the groups >N—CO—N< or >N—CS—N<
- A01N47/36—Ureas or thioureas containing the groups >N—CO—N< or >N—CS—N< containing the group >N—CO—N< directly attached to at least one heterocyclic ring; Thio analogues thereof
-
- 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
- A01N43/48—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with two nitrogen atoms as the only ring hetero atoms
- A01N43/56—1,2-Diazoles; Hydrogenated 1,2-diazoles
Abstract
The invention belongs to the technical field of pesticide and discloses a three-component weeding composition consisting of pyrasulfotole, mesosulfuron and bensulfuron. The weight ratio of the three active components in the composition is (0.75-12):(0.25-4):(1.25-20), and the weight percentage content of the active components in the composition is 5 percent to 85 percent. The herbicide composition provided by the invention can prevent and remove various weeds in a wheat field, improves the prevention effect on the weeds in the wheat field obviously, has low use amount of effective components and low use cost, is safe for wheat and afterreap corps, and is an ideal herbicide.
Description
[technical field]
The invention belongs to technical field of pesticide is and in particular to one kind is with pyrasulfotole, mesosulfuron and the phonetic sulphur of benzyl
The grand herbicidal composition for active component, for eliminating weed in wheat field.
[background technology]
Semen Tritici aestivi is one of China staple crops, and with the continuous expansion of wheat planting area, wheatland crop smothering expands continuous
Also day by day expand in big production, wheatland common weed has amur foxtail, Alopecurus, grass, Herba Galii Teneri, descurainia sophia (l.) webb ex prantl, Herba chenopodii, open country
Herba bromi japonici, caput grass, lolium temulentum, Herba Erigerontis Annui, field thistle, Herba stellariae mediae, ox chickweed, Herba Xanthii, corn gromwell, Herba Viviae Sativae, Herba Capsellae, Herba veronicae, volume
Stem knotweed, Fructus Kochiae etc., these weeds and Semen Tritici aestivi contention moisture, nutriment, space, cause wheat growth gesture weak, directly affect Semen Tritici aestivi
Yield and quality, directly affects the reserves of China cereal crops.So can effective control wheatland crop smothering, stablize improving yield of wheat become
One of major subjects of modern agriculture research, domestic wheat paddock widely uses herbicide, it is to avoid Semen Tritici aestivi subtracts because of Weed infestation
Produce.But the extensive application recently as chemical herbicide, great changes will take place for Crop-weed Communities, herbicide damage, miscellaneous
The problems such as careless Drug resistance, shift of weed community and environmental pollution, continuously emerges, and so that farmland weed difficulty of prevention and cure is increased.Therefore,
We need to research and develop a kind of herbicide of efficient preventing and treating wheat weedses, in order to tackle increasingly serious Weed infestation.
Pyrasulfotole, other titles: sulphonyl grass pyrazoles, pyrrole sulfone fluorine ketone, chemical name: (5- hydroxyl -1,3- diformazan
Base pyrazoles -4- base) (α, α, α-three fluoro- 2- mesyl-p- tolyl) ketone, structural formula is:
Pyrasulfotole is the pyrazoleses high activity interior suction postemergence weed control of preventing and treating cereal crop field broadleaf weed
Agent, is hppd inhibitor, is mainly absorbed by blade, is conducted with root to plumelet by phloem and xylem, in enzyme and suppression
After agent intimate association, produce inhibitory action as time went on and slowly, due to the suppression to hppd, hinder p- hydroxyphenyl third
Keto acid, to the transformation of 2,5-dihydroxy-.alpha.-toluic acid., thus indirectly suppressing the biosynthesiss of carotenoid, causes plant meristem albefaction, finally
Dead.Pyrasulfotole can effectively prevent and treat most of broad leaved weed, but invalid to grassy weed.
Mesosulfuron (mesosulfuron-methyl), other titles: mesosulfuronmethyl, generation agate, chemical name: 2- (4,6-
Dimethoxypyridin -2- base amino carbonyl amino sulfonyl)-α-(sulfonyloxy methyl amido) methyl p-methyl benzoate, structural formula is:
Mesosulfuron is sulfonylurea inner sucting conduction type after seedling selective herbicide, is acetolactate synthestase (als)
Inhibitor, grass cutting blade absorb medicament after stop growing, gradually withered.The longevity of residure in soil for this medicine is short, not under the influence of
Stubble plant growth, is mainly used in wheat paddock and prevents and kill off multiple grassy weeds such as amur foxtail, wild oat, caput grass, annual bluegrass, firmly
Grass, alkali thatch, Itanlian rye, lolium temulentum, Herba bromi japonici etc., but undesirable to broad leaved weed preventive effect.In addition, mesosulfuron is as single dose
When wheat paddock uses, on the premise of ensureing drug effect, consumption is of a relatively high, there is poisoning hidden danger.
Bensulfuron-methyl (bensulfuron-methyl), other titles: Nongdeshi, prestige agriculture, chemical name: 2- [[[[[(4,
6- dimethoxypyridin -2- base) amino] carbonyl] amino] sulfonyl] methyl] essence of Niobe, structural formula:
Bensulfuron-methyl belongs to sulfonylurea inner sucting conduction type after seedling selective herbicide, is acetolactate synthestase (als) suppression
Preparation, effective ingredient can spread rapidly in water, absorb, by weeds root and blade, each portion of weeds that transfers to, hinder side chain ammonia
The biosynthesiss of base acid, stop division and the growth of cell.Susceptible weeds growth function is made to be obstructed, tender tissue turns to be yellow too early,
Suppression leaf portion growth, hinder root growth and downright bad.Most of broad-leaved and sedge weed can effectively be prevented and kill off, to grassy weed
Preventive effect is poor, and uses so that resisting the weeds of this herbicide frequently to occur because the large area of bensulfuron-methyl is continuous.
In order to make up above each single dose deficiency in actual use, people by any of the above single dose respectively with other
Herbicide is used in mixed way, for example: patent cn201110421165.2 discloses the mesosulfuron weeding mixed with bensulfuron-methyl
Agent compositionss, but both herbicides are all sulfonylurea herbicides, and its target enzymes is all als, and action site is single, Liang Zhefu
The compositionss joined easily make weeds develop immunity to drugs.
European patent ep2232999 (a1) disclose pyrasulfotole with including mesosulfuron, iodine metsulfuron-methyl
Several herbicides and safener use with 27 kinds of compounding modes, but the compositionss disclosed in this patent be required to add safety
Agent is to reach the purpose to crop safety.
Our company discloses pyrasulfotole with mesosulfuron again in patent cn201310412713.4 of application in 2013
The compositionss joined, but find that both are compounding in actual use and still have part broad leaved weed can not prevent and kill off, therefore, the present inventor
Further investigate, have been surprisingly found that on the basis of the screening of substantial amounts of formula indoor and field control effectiveness test, pyrasulfotole
Compounding in certain ratio range with mesosulfuron and bensulfuron-methyl, both can make up pyrasulfotole and methyl two sulphur
Grand individually compound deficiency, the Drug resistance to sulfonylurea herbicide for the weeds can be delayed again, solve herbicide alone in herbicide
Spectrum, preventive effect and limitation present on safety, have reached the purpose expanding weed control spectrum, improving preventive effect, improve safety.
[content of the invention]
It is an object of the invention to according to the present situation of current wheat field herbicide, and weeds of wheat a situation arises,
There is provided that a kind of broad weed-killing spectrum, herbicidal effect are good, use safety, be conducive to the herbicidal composition of weeds of wheat comprehensive control.
Present invention employs a kind of following technical scheme: herbicide composition for wheat field, become containing tri- kinds of activity of a, b and c
Point, wherein active component a is pyrasulfotole, and active component b is mesosulfuron, and active component c is bensulfuron-methyl.
Specifically, in described herbicidal composition, the weight ratio of active component a, b and c is: (0.75-12): (0.25-4):
(1.25-20), preferably: (0.75-6): (0.25-2): (1.25-10), more preferably: (1.5-4.5): (0.4-
1.4): (2-7), still more preferably for (2-3.5): (0.6-1.1): (3-5.5), optimum weight ratio is: 2.5:0.8:4.
Present invention also offers the preparation containing above-mentioned composition, in described preparation, the weight percentage of effective ingredient is 5-
85%.
Described preparation is any one dosage form agriculturally allowing, preferably wettable powder, water dispersible granules, suspending agent,
Dispersible the various dosage forms of the suitable agricultural use such as oil-suspending agent, more preferably wettable powder.
In described preparation, also contain auxiliary agent, specially dispersant, wetting agent, disintegrating agent, emulsifying agent, adhesive or carrier
One or more of Deng.
For wettable powder, can used additives include: dispersant is selected from lignosulfonates, polycarboxylate, alkylnaphthalene sulphur
In hydrochlorate, dodecylbenzene sodium sulfonate, alkyl polyoxyethylene ether sulfonate or alkylphenol-polyethenoxy base ether formaldehyde condensation products etc.
One or more；Wetting agent gathers selected from sodium lauryl sulphate, Teepol, fatty alcohol-polyoxyethylene ether, nonyl phenol
One or more of oxygen vinyl Ether or sorbitan fatty acid ester polyoxyethylene ether etc.；Carrier be selected from Kaolin, kieselguhr,
One or more of attapulgite, bentonite or white carbon etc..
For water dispersible granules, can used additives include: dispersant is selected from polycarboxylate, lignosulfonates, alkylnaphthalene sulphur
One or more of hydrochlorate, alkylphenol polyoxyethylene or alkylphenol polyoxyethylene sulfonate etc.；Wetting agent is selected from naphthalene sulphur
Hydrochlorate, aliphatic alcohol sulfate, dodecyl benzene sulfonate, sodium lauryl sulphate, fatty alcohol-polyoxyethylene ether or alkyl sulfonic acid
One or more of salt etc.；Disintegrating agent is selected from ammonium sulfate, carbamide, corn starch and its derivant, low substituted hydroxy-propyl fiber
One or more of element, Polyvinylpyrrolidone or sodium alginate etc.；Adhesive is selected from hydroxyethyl cellulose, solubility is formed sediment
One or more of powder, Polyethylene Glycol, methylcellulose, dextrin, Fructose or polyvinyl alcohol etc.；Carrier is selected from white carbon, height
One or more of ridge soil, bentonite, kieselguhr, precipitated calcium carbonate, Gypsum Fibrosum, attapulgite, carbamide or sucrose etc..
For suspending agent, can used additives include: dispersant be selected from polycarboxylate, lignosulfonates, alkylnaphthalene sulfonate,
One or more of tersperse2425, alkylphenol polyoxyethylene etc.；Wetting agent is selected from alkylphenol-polyethenoxy Ji Mijia
Aldehyde condensate sulfate, alkylphenol-polyethenoxy base ether phosphate, phenethyl phenol polyoxyethylene groups ether phosphate, alkylsurfuric acid
One or more of salt, naphthalene sulfonate etc.；Thickening agent be selected from xanthan gum, carboxymethyl cellulose, sodium polyacrylate, bentonite,
One or more of aluminium-magnesium silicate etc.；Antifreezing agent is selected from one or more of ethylene glycol, propylene glycol, glycerol, carbamide etc.；Anti-
Rotten agent is selected from one or more of formaldehyde, sorbic acid, sodium benzoate etc.；Defoamer can be silicone defoamer.
For dispersibling oil-suspending agent, can used additives include: dispersant is selected from methyl naphthalene sulfonic acid salt formaldehyde condensation products, poly- carboxylic
One or more of hydrochlorate, lignosulfonates, alkylnaphthalene sulfonate etc.；Wetting agent is selected from alkylphenol polyoxyethylene formaldehyde
One of condensate sulfate, alkylphenol polyoxyethylene phosphate ester, alkyl sulfate, alkylsulfonate, naphthalene sulfonate etc.
Or it is multiple；Emulsifying agent is selected from castor oil polyoxyethylene ether, Nongru-700 #, agriculture breast 2201, anhydrous sorbitol single-hard ester acid ester polyoxy
One or more of vinyl Ether etc.；Thickening agent be selected from one of bentonite, polyvinyl alcohol, xanthan gum, aluminium-magnesium silicate etc. or
Multiple；Defoamer can be silicone；Cosolvent is selected from one or more of methanol, ethanol, dimethyl sulfoxide etc.；Dispersion
Medium is selected from one or more of Semen Maydis oil, soybean oil, Oleum Brassicae campestriss, methyl oleate etc..
Salt described in above-mentioned auxiliary agent such as polycarboxylate, lignosulfonates etc. are sodium salt or calcium salt.
The beneficial effect that herbicidal composition of the present invention possesses: (1) herbicidal composition of the present invention has Synergistic and makees
With；(2) three kinds of active component of herbicidal composition of the present invention are had complementary advantages, and to Semen Tritici aestivi and succession crop safety, decrease simultaneously
The consumption of effective ingredient, reduces the adverse effect to environment；(3) herbicidal composition broad weed-killing spectrum of the present invention, can be disposable
Prevent and kill off the various weeds of wheat paddock；(4) the herbicidal composition optimum period for applying fertilizer of the present invention extends, and herbicide is thorough；(5) herbicide of the present invention
Compositionss can delay the generation of herbicide resistance, thus delaying the succession speed of weed community.
[specific embodiment]
In order that the objects, technical solutions and advantages of the present invention become more apparent, present invention specific examples below
Illustrate, but be only limitted to absolutely not this.Described below be the preferable embodiment of the present invention, be used only for describe the 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 1:36%pyrasulfotole mesosulfuron bensulfuron-methyl wettable powder
Weigh 12%pyrasulfotole, 4% mesosulfuron, 20% bensulfuron-methyl, 3% polycarboxylic acids sodium, 2% 12
Sodium alkyl benzene sulfonate, 1% fatty alcohol-polyoxyethylene ether, Kaolin complement to 100%, after mix homogeneously, premenstrual mixing, air-flow powder
Broken, rear mixing, obtains 36%pyrasulfotole mesosulfuron bensulfuron-methyl wettable powder.
Example of formulations 2:56%pyrasulfotole mesosulfuron bensulfuron-methyl wettable powder
Weigh 20%pyrasulfotole, 6% mesosulfuron, 30% bensulfuron-methyl, 12% DBSA
Sodium, 1% NPE, 2% fatty alcohol-polyoxyethylene ether, Kaolin complement to 100%, after mix homogeneously, premenstrual
Mixing, comminution by gas stream, rear mixing, obtain 56%pyrasulfotole mesosulfuron bensulfuron-methyl wettable powder.
Example of formulations 3:73%pyrasulfotole mesosulfuron bensulfuron-methyl water dispersible granules
Weigh 25%pyrasulfotole, 8% mesosulfuron, 40% bensulfuron-methyl, 10% sodium lignin sulfonate, 2% 12
Alkyl sodium sulfate, 2% carbamide, 1% methylcellulose, kieselguhr complement to 100%, after mix homogeneously, premenstrual mixing, air-flow powder
Broken, mix afterwards, add water kneading, pelletize, screening, obtains 73%pyrasulfotole mesosulfuron bensulfuron-methyl water dispersible granules.
Example of formulations 4:29%pyrasulfotole mesosulfuron bensulfuron-methyl water dispersible granules
Weigh 10%pyrasulfotole, 4% mesosulfuron, 15% bensulfuron-methyl, 10% Negel, 2% naphthalene sulphur
Hydrochlorate, 1.5% sodium alginate, 1% hydroxyethyl cellulose, bentonite complement to 100%, after mix homogeneously, premenstrual mixing, air-flow powder
Broken, mix afterwards, add water kneading, pelletize, screening, obtains 29%pyrasulfotole mesosulfuron bensulfuron-methyl water dispersible granules.
Example of formulations 5:12%pyrasulfotole mesosulfuron bensulfuron-methyl suspending agent
Weigh 3%pyrasulfotole, 2% mesosulfuron, 7% bensulfuron-methyl, 5% lignosulfonates, 3% alkane
Base sulfate, 1% aluminium-magnesium silicate, 5% propylene glycol, 0.2% sodium benzoate, 0.1% organic silicon defoamer, deionized water complement to
100%, after mix homogeneously, after high speed shear dispersion, sand mill sand milling, obtain 12%pyrasulfotole mesosulfuron
Bensulfuron-methyl suspending agent.
Example of formulations 6:42%pyrasulfotole mesosulfuron bensulfuron-methyl suspending agent
Weigh 16%pyrasulfotole, 6% mesosulfuron, 20% bensulfuron-methyl, 3% alkylnaphthalene sulfonate, 3%
Alkylphenol-polyethenoxy base ether formaldehyde condensation products sulfate, 0.5% bentonite, 3% glycerol, 0.5% sodium benzoate, 0.3% have
Machine silicon defoaming agent, deionized water complement to 100%, after mix homogeneously, obtain 42% after high speed shear dispersion, sand mill sand milling
Pyrasulfotole mesosulfuron bensulfuron-methyl suspending agent.
Example of formulations 7:30%pyrasulfotole mesosulfuron bensulfuron-methyl dispersibles oil-suspending agent
Weigh 9%pyrasulfotole, 7% mesosulfuron, 14% bensulfuron-methyl, 5% sodium lignin sulfonate, 8% alkane
Base sodium sulfate, 5% anhydrous sorbitol single-hard ester acid ester polyoxyethylene ether, 1% polyvinyl alcohol, 0.2% organic silicon defoamer, 3%
Methanol, Semen Maydis oil complement to 100%, after mix homogeneously, and ground or high speed shear is disperseed, and obtains final product described 30%
Pyrasulfotole mesosulfuron bensulfuron-methyl dispersibles oil-suspending agent.
Example of formulations 8:23%pyrasulfotole mesosulfuron bensulfuron-methyl dispersibles oil-suspending agent
Weigh 8%pyrasulfotole, 3% mesosulfuron, 12% bensulfuron-methyl, 7% polycarboxylic acids sodium, 8% alkyl phenol
Polyoxyethylene ether phosphate, 2% agriculture breast 2201,1% bentonite, 0.1% organic silicon defoamer, 2% dimethyl sulfoxide, Oleic acid first
Ester complements to 100%, after mix homogeneously, and ground or high speed shear is disperseed, and obtains final product described 23%pyrasulfotole methyl
The grand bensulfuron-methyl of two sulphurs dispersibles oil-suspending agent.
Raw embodiment 1 of surveying:
Pyrasulfotole, mesosulfuron and bensulfuron-methyl compound synergy mensure and Herbicidal test
In order to prevent and kill off the weeds of wheat in agricultural production, inventor carried out pyrasulfotole, mesosulfuron with
The mutually compounding potentiation research of bensulfuron-methyl, carries out cauline leaf process using indoor pot method, and test is with reference to " the Chinese people are altogether
With state's agricultural industry criteria ny/t 1155.7-2006 farm-chemical indoor determination test rule herbicide " the 7th part: mixture
Synergy measure in teaching colby method.
1st, reagent agent
98%pyrasulfotole active compound
95% mesosulfuron active compound
97% bensulfuron-methyl active compound
2nd, for examination weeds
Descurainia sophia (l.) webb ex prantl, Fructus Kochiae, wild oat
Culture for trying weeds adopts potted plant culture method, with 11 × 12cm plastic tub, is placed in shallow-water tank, will not make
The soil adopted back in the farmland of used herbicide air-dries, and fills basin after sieving, at dry ground quantitative 4/5 in basin, soil ph value 7.0, and have
Machine matter content 1.2%.After making soil completely moistening with basin alms bowl bottom infiltrating irrigation mode, pretreatment is quantitatively spread for examination weed seed
It is sowed at soil surface, according to seed size earthing 0.5cm～1.0cm, 28～32 DEG C/18～25 DEG C of indoor temperature (d/n), relatively
Humidity 75% ± 15%.Adopt the bottom infiltrating irrigation mode moisturizing of basin alms bowl in incubation, keep soil to be sufficiently humidified so as to.Treat that weeds emerge
Afterwards wild oat is set to 10 plants, descurainia sophia (l.) webb ex prantl and Fructus Kochiae are set to 5 plants.
3rd, EXPERIMENTAL DESIGN
Test sets 41 process altogether, wherein pyrasulfotole sets 0.75,1.5,3,6, at 12g a.i./mu 5 dosage
Reason, mesosulfuron sets 0.25,0.5,1,2,4g a.i./mu 5 dosage process, bensulfuron-methyl sets 1.25,2.5,5,10,20g
A.i./mu 5 dosage is processed, and pyrasulfotole+ mesosulfuron+bensulfuron-methyl three uses with and sets up 0.75+0.25+ separately
1.25、0.75+0.5+2.5、0.75+1+5、0.75+2+10、0.75+4+20、1.5+0.25+2.5、1.5+0.5+5、1.5+1+
10、1.5+2+20、1.5+4+1.25、3+0.25+5、3+0.5+10、3+1+20、3+2+1.25、3+4+2.5、6+0.25+10、6+
0.5+20、6+1+1.25、6+2+2.5、6+4+5、12+0.25+20、12+0.5+1.25、12+1+2.5、12+2+5、12+4+10g
A.i./mu 25 dosage ratio is processed, and separately sets an auxiliary agent comparison, 41 process, are repeated 4 times altogether.
4th, test method
It is placed in spray (ass-4 type pesticide spraying system in spray tower in grassy weed 2-4 leaf phase, broad leaved weed 3-5 leaf
System, dg8003 shower nozzle, atomisation pressure 2.75mpa, spouting liquid 30kg/ mu), it is placed in warm indoor cultivation after natural air drying and observe.
5th, weedy rices and analysis method
After dispenser, the growth conditions of routine observation weeds, poisoning symptom and poisoning degree, record symptom of chemical damage, 21 after medicine
It weighs aerial partss fresh weight, calculates weeds survival rate e, and the type of action using the mixed medicament of colby method evaluation, further
Inquire into the reasonability of proportioning.
E=treatment region weeds fresh weight × 100/ check plot weeds fresh weight ... ... ... ... ... (1)
Colby method computing formula:
X consumption is the weeds survival rate of herbicide a during p；
Y consumption is the weeds survival rate of herbicide b during q；
Z consumption is the weeds survival rate of herbicide c during w；
e0Consumption is the theoretical weeds survival rate of herbicide (a+b+c) when (p+q+w)；
e0- e ＞ 10% is potentiation；e0- e ＜ -10% is antagonism；e0- e-value is summation action between ± 10%.
6th, result and analysis in table 1-3
Table 1 pyrasulfotole, mesosulfuron and bensulfuron-methyl mixture are to the actual measurement survival rate of descurainia sophia (l.) webb ex prantl and theory
Survival rate
Pyrasulfotole, mesosulfuron co-toxicity to descurainia sophia (l.) webb ex prantl mixed with bensulfuron-methyl:
Pyrasulfotole is preferable to the preventive effect of descurainia sophia (l.) webb ex prantl, and descurainia sophia (l.) webb ex prantl has drug resistance to bensulfuron-methyl, and mesosulfuron is to descurainia sophia (l.) webb ex prantl
To no effect, with the increase of pyrasulfotole consumption, after using with, the preventive effect of descurainia sophia (l.) webb ex prantl is improved.
Table 2 pyrasulfotole, mesosulfuron and bensulfuron-methyl mixture are deposited to the actual measurement survival rate of Fructus Kochiae and theory
Motility rate
Pyrasulfotole, mesosulfuron co-toxicity to Fructus Kochiae mixed with bensulfuron-methyl: bensulfuron-methyl is to Fructus Kochiae
Preventive effect preferably, pyrasulfotole is slightly worse to the preventive effect of Fructus Kochiae, mesosulfuron to Fructus Kochiae to no effect, with bensulfuron-methyl
The increase of consumption, improves to the preventive effect of Fructus Kochiae after using with.
Table 3 pyrasulfotole, mesosulfuron and bensulfuron-methyl mixture are to the actual measurement survival rate of wild oat and theory
Survival rate
Pyrasulfotole, mesosulfuron co-toxicity to wild oat mixed with bensulfuron-methyl: mesosulfuron pair
The preventive effect of wild oat preferably, pyrasulfotole and bensulfuron-methyl to wild oat to no effect, with the increasing of mesosulfuron consumption
Plus, after using with, the preventive effect of wild oat is improved.
Toxicity Determination result shows, pyrasulfotole, mesosulfuron and bensulfuron-methyl are in weight ratio (0.75-
12): (0.25-4): in the range of (1.25-20), the mixed preventive effect to weeds shows as being added or potentiation, in weight ratio
(0.75-6): (0.25-2): mixed in the range of (1.25-10) have preferable potentiation, expands weed control spectrum, has reached same
When prevent and kill off the purpose of wheat paddock main weeds.
Raw embodiment 2 of surveying:
Pyrasulfotole, mesosulfuron and bensulfuron-methyl compound the safety testing to Semen Tritici aestivi
The safety mutually compounding in order to study pyrasulfotole, mesosulfuron and bensulfuron-methyl, inventor does
Tests below, test is with reference to " People's Republic of China's agricultural industry criteria ny/t 1155.8-2007 farm-chemical indoor determination
Experiment criterion herbicide " the 8th part: the safety testing stem and leaf nebulization of crop.
1st, reagent agent
98%pyrasulfotole active compound
95% mesosulfuron active compound
97% bensulfuron-methyl active compound
2nd, for studying thing
Semen Tritici aestivi
Culture for studying thing adopts greenhouse pot culture method, with 11 × 12cm plastic tub, is placed in shallow-water tank, will not make
The soil adopted back in the farmland of used herbicide air-dries, and fills basin after sieving, at dry ground quantitative 4/5 in basin, soil ph value 7.0, and have
Machine matter content 1.2%.After top-watered makes soil completely moistening, wheat seed is quantitatively broadcasted sowing in soil surface, according to kind
Sub- size earthing 0.5cm～2.0cm, 28～32 DEG C/18～25 DEG C of indoor temperature (d/n), relative humidity 75% ± 15%.Culture
During adopt the bottom infiltrating irrigation mode moisturizing of basin alms bowl, keep soil be sufficiently humidified so as to.After Semen Tritici aestivi is emerged, Semen Tritici aestivi is set to 10 plants.
3rd, for examination weeds
Descurainia sophia (l.) webb ex prantl, Fructus Kochiae, Herba chenopodii, caput grass, amur foxtail, wild oat
Culture for trying weeds adopts greenhouse pot culture method, with 11 × 12cm plastic tub, is placed in shallow-water tank, will not make
The soil adopted back in the farmland of used herbicide air-dries, and fills basin after sieving, at dry ground quantitative 4/5 in basin, soil ph value 7.0, and have
Machine matter content 1.2%.After making soil completely moistening with basin alms bowl bottom infiltrating irrigation mode, pretreatment is quantitatively spread for examination weed seed
It is sowed at soil surface, according to seed size earthing 0.5cm～1.0cm, 28～32 DEG C/18～25 DEG C of indoor temperature (d/n), relatively
Humidity 75% ± 15%.Adopt the bottom infiltrating irrigation mode moisturizing of basin alms bowl in incubation, keep soil to be sufficiently humidified so as to.Treat that weeds emerge
Afterwards caput grass, amur foxtail, wild oat are set to 10 plants, descurainia sophia (l.) webb ex prantl, Fructus Kochiae, Herba chenopodii are set to 5 plants.
4th, EXPERIMENTAL DESIGN
Test sets 41 process altogether, wherein pyrasulfotole sets 1,2,4,8,16g a.i./mu 5 dosage process, first
Base two sulphur is grand to set 0.375,0.75,1.5,3,6g a.i./mu 5 dosage process, bensulfuron-methyl sets 1.5,3,6,12,24g
A.i./mu 5 dosage is processed, and pyrasulfotole+ mesosulfuron+bensulfuron-methyl three uses with and sets up 0.75+0.25+ separately
1.25、0.75+0.5+2.5、0.75+1+5、0.75+2+10、0.75+4+20、1.5+0.25+2.5、1.5+0.5+5、1.5+1+
10、1.5+2+20、1.5+4+1.25、3+0.25+5、3+0.5+10、3+1+20、3+2+1.25、3+4+2.5、6+0.25+10、6+
0.5+20、6+1+1.25、6+2+2.5、6+4+5、12+0.25+20、12+0.5+1.25、12+1+2.5、12+2+5、12+4+10g
A.i./mu 25 dosage ratio is processed, and separately sets an auxiliary agent comparison, 41 process, are repeated 4 times altogether.
5th, test method
It is placed in spray in spray tower whne Semen Tritici aestivi 3-5 leaf phase, grassy weed 2-4 leaf phase, broad leaved weed 3-5 during the leaf phase
(ass-4 type pesticide spraying system, dg8003 shower nozzle, atomisation pressure 2.75mpa, spouting liquid 30kg/ mu), treats that natural air drying is rearmounted
Observe in warm indoor cultivation.
6th, crop investigation
After dispenser, investigation each process Semen Tritici aestivi has or not symptom of chemical damage, if having, itemized record symptom of chemical damage, grade, 21 after medicine
Its measurement each process Semen Tritici aestivi fresh weight, calculates fresh weight inhibition, with the safety to Semen Tritici aestivi for the clear and definite test medicine.
Table 4 poisoning evaluation index
| Poisoning is classified | Poisoning degree (%) | Result describes |
| 0 | 0 | Safety, no poisoning |
| 1 | 1～10 | No substantially poisoning |
| 2 | 11～30 | Slight poisoning |
| 3 | 31～50 | Moderate poisoning |
| 4 | ＞ 50 | Serious poisoning |
7th, weedy rices
After dispenser, periodical visual inspection observes growth conditions, poisoning symptom and the poisoning degree of weeds, records symptom of chemical damage.After medicine
Adopt the fresh weight preventive effect that growth inhibition assay calculates each process within 21 days.
Growth inhibition assay computing formula:
In formula:
E fresh weight preventive effect, unit is percentage rate (%)；
t0Comparison weeds aerial partss fresh weight, unit be gram；
t1Process weeds aerial partss fresh weight, unit be gram.
8th, result and analysis
Table 5 respectively processes the preventive effect to weeds and the poisoning classification to Semen Tritici aestivi
It can be seen from Table 5 that pyrasulfotole mesosulfuron bensulfuron-methyl mixture is compared with single dose, in weight
Amount is than (0.75-12): (0.25-4): in the range of (1.25-20), the preventive effect to wheat paddock main weeds and the safety to Semen Tritici aestivi
Property is above single dose, to Semen Tritici aestivi safety.
In sum, pyrasulfotole is compounded within the specific limits with mesosulfuron and bensulfuron-methyl and has significantly
Potentiation, to crop safety, complex preparation is not only wheat paddock and provides a kind of safe, practical herbicide, and significantly
Reduce the cost of enterprise and peasant household.
Raw embodiment 3 of surveying:
Eliminating weed in wheat field field control effectiveness test:
1st, test process
(13) blank
Test sets 12 process, 4 repetitions, totally 48 process cells, often processes 20 square metres of plot area, random district's groups
Arrangement.(1)～(9) 36%pyrasulfotole mesosulfuron bensulfuron-methyl wettable powder is reagent agent, (10)
～(12) 5%pyrasulfotole suspension emulsion, 3% mesosulfuron dispersible oil-suspending agent, 30% bensulfuron-methyl wettable powder
Agent is comparison medicament.Every mu is watered 30 kilograms, using 552 third type aerosol apparatus (0.7mm aperture) even spraying.Field main weeds
There are descurainia sophia (l.) webb ex prantl, Fructus Kochiae, Herba chenopodii, caput grass, amur foxtail, wild oat etc..
2nd, pilot project and method
(1) safety: after dispenser, the growth promoter situation of investigation Semen Tritici aestivi, evaluate the safety to Semen Tritici aestivi for the reagent agent.
(2) herbicidal effect: every cell takes at random at 4 points, investigates 1/4 square metre at every, investigation weed control in 30 days after dispenser
Effect, record weeds species and strain number respectively, calculate weeds strain preventive effect.
(3) result of the test
Safety: investigate after dispenser, (1)～(9) chemicals treatment district Plant Height in Wheat, leaf color and blank district basic
Cause, and (10)～(12) treatment region Semen Tritici aestivi shows that leaf chlorosis, plant strain growth are suppressed, wheat seedling height is uneven to wait poisoning disease
Shape, shows that reagent agent (1)～(9) 36%pyrasulfotole mesosulfuron bensulfuron-methyl wettable powder is all right
Semen Tritici aestivi safety.
Weeding result, is shown in Table 6:
Table 6 36%pyrasulfotole mesosulfuron bensulfuron-methyl wettable powder is prevented to weeds of wheat
Except effect
Note: (1) 36%pyrasulfotole mesosulfuron bensulfuron-methyl wettable powder (0.75:2:1.25)
(2) 36%pyrasulfotole mesosulfuron bensulfuron-methyl wettable powder (1:1.7:0.4)
(3) 36%pyrasulfotole mesosulfuron bensulfuron-methyl wettable powder (1.5:1.4:2)
(4) 36%pyrasulfotole mesosulfuron bensulfuron-methyl wettable powder (2:1.1:3)
(5) 36%pyrasulfotole mesosulfuron bensulfuron-methyl wettable powder (2.5:0.8:4)
(6) 36%pyrasulfotole mesosulfuron bensulfuron-methyl wettable powder (3.5:0.6:5.5)
(7) 36%pyrasulfotole mesosulfuron bensulfuron-methyl wettable powder (4.5:0.4:7)
(8) 36%pyrasulfotole mesosulfuron bensulfuron-methyl wettable powder (5.5:0.3:8.5)
(9) 36%pyrasulfotole mesosulfuron bensulfuron-methyl wettable powder (6:0.25:10)
(10) 5%pyrasulfotole suspension emulsion
(11) 3% mesosulfurons dispersible oil-suspending agent
(12) 30% bensulfuron-methyl wettable powders
(13) blank
As shown in Table 6, the 36%pyrasulfotole mesosulfuron bensulfuron-methyl wettable powder of different ratio
To common weed strain preventive effect between 85.80%～97.11%, be superior to comparison medicament 5%pyrasulfotole suspension emulsion,
3% mesosulfuron dispersible oil-suspending agent, 30% bensulfuron-methyl wettable powder (weeds strain preventive effect be respectively 47.77%,
58.40% and 46.23%).Wherein pyrasulfotole, mesosulfuron and bensulfuron-methyl weight ratio are (0.75-6):
(0.25-2): have obvious preventive effect to wheat paddock common weed when (1.25-10), weeds strain preventive effect is all more than 85%；
Pyrasulfotole, mesosulfuron and bensulfuron-methyl weight ratio are (1.5-4.5): (0.4-1.4): to wheat paddock when (2-7)
Preferably, weeds strain preventive effect is all more than 90% for common weed preventive effect；And pyrasulfotole, mesosulfuron and bensulfuron-methyl
Weight is more up to 97.11% than for preventive effect during 2.5:0.8:4.Thus illustrate, pyrasulfotole, mesosulfuron and benzyl
Sulfometuron Methyl is in weight ratio (0.75-6): (0.25-2): compounding in the range of (1.25-10), there is preventive effect to wheat paddock common weed,
And this herbicidal composition is to Semen Tritici aestivi safety.
Eliminating weed in wheat field field control effectiveness test:
1st, test process
(1) 10%pyrasulfotole mesosulfuron bensulfuron-methyl wettable powder (2.5:0.8:4) 72g/ mu
(2) 36%pyrasulfotole mesosulfuron bensulfuron-methyl wettable powder (2.5:0.8:4) 20g/ mu
(3) 72%pyrasulfotole mesosulfuron bensulfuron-methyl wettable powder (2.5:0.8:4) 10g/ mu
Test sets 3 process, 4 repetitions, totally 12 process cells, often processes 20 square metres of plot area, random district's groups
Arrangement.(1)～(3) pyrasulfotole mesosulfuron bensulfuron-methyl wettable powder is reagent agent, and every mu is watered
30 kilograms, using 552 third type aerosol apparatus (0.7mm aperture) even spraying.Field main weeds have descurainia sophia (l.) webb ex prantl, Fructus Kochiae, Herba chenopodii, caput
Grass, amur foxtail, wild oat etc..
2nd, pilot project and method
Herbicidal effect: every cell takes at random at 4 points, investigates 1/4 square metre at every, 30 days investigation weed control effects after dispenser
Really, record weeds species and strain number respectively, calculate weeds strain preventive effect.
3rd, result of the test: herbicidal effect is shown in Table 7
30 days pyrasulfotole mesosulfuron bensulfuron-methyls preventive effect to various weeds after table 7 medicine
Note: (1) 10%pyrasulfotole mesosulfuron bensulfuron-methyl wettable powder (2.5:0.8:4)
(2) 36%pyrasulfotole mesosulfuron bensulfuron-methyl wettable powder (2.5:0.8:4)
(3) 72%pyrasulfotole mesosulfuron bensulfuron-methyl wettable powder (2.5:0.8:4)
As shown in Table 7, when the weight of pyrasulfotole, mesosulfuron and bensulfuron-methyl is than for 2.5:0.8:4, no
With content pyrasulfotole mesosulfuron bensulfuron-methyl wettable powder to common weed strain preventive effect all 97%
More than, show pyrasulfotole, mesosulfuron and bensulfuron-methyl weight ratio during for optimal proportion, different activities composition contains
The herbicidal composition of amount all has significant preventive effect to weeds.
In sum, instant component is reasonable, and activity when preventive effect is administered alone better than each component is mainly miscellaneous to wheat paddock
Grass all has good preventive effect, expands control of weeds spectrum, has delayed the generation of herbicide resistance, to crop safety, met
The security requirement of pesticidal preparations.
Claims (9)
1. it is characterised in that said composition is made up of tri- kinds of active component of a, b and c, wherein activity becomes a kind of herbicidal composition
A is divided to be pyrasulfotole, active component b is mesosulfuron, active component c is bensulfuron-methyl, described active component a, b
Weight ratio with c is: (0.75-12): (0.25-4): (1.25-20).
2. herbicidal composition according to claim 1 is it is characterised in that the weight ratio of active component a, b and c is:
(0.75-6): (0.25-2): (1.25-10).
3. herbicidal composition according to claim 2 is it is characterised in that the weight ratio of active component a, b and c is:
(1.5-4.5): (0.4-1.4): (2-7).
4. herbicidal composition according to claim 3 is it is characterised in that the weight ratio of active component a, b and c is:
(2-3.5): (0.6-1.1): (3-5.5).
5. herbicidal composition according to claim 4 is it is characterised in that the weight ratio of active component a, b and c is:
2.5:0.8:4.
6. the preparation of herbicidal composition any one of 1-5 containing claim is it is characterised in that active component is in herbicide
Weight percentage in compositionss is 5-85%.
7. preparation according to claim 6 is it is characterised in that described preparation can be any one agent agriculturally allowing
Type.
8. preparation according to claim 7 is it is characterised in that described dosage form is wettable powder, water dispersible granules, suspension
Agent or dispersible oil-suspending agent.
9. the herbicidal composition described in any one of claim 1-5 or the preparation described in any one of claim 6-8 are being prevented and kill off
Application in weeds of wheat.
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| CN201610766685.XA CN106342866A (en) | 2016-08-30 | 2016-08-30 | Herbicide composition for wheat field |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101669482A (en) * | 2009-07-10 | 2010-03-17 | 合肥星宇化学有限责任公司 | Weeding composition for wheat fields |
| CN102379303A (en) * | 2011-12-15 | 2012-03-21 | 安徽丰乐农化有限责任公司 | Wheat post-emergence compound herbicide |
| CN103651476A (en) * | 2013-09-11 | 2014-03-26 | 山东滨农科技有限公司 | Herbicide composition containing Pyrasulfotole and mesosulfuron |
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2016
- 2016-08-30 CN CN201610766685.XA patent/CN106342866A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101669482A (en) * | 2009-07-10 | 2010-03-17 | 合肥星宇化学有限责任公司 | Weeding composition for wheat fields |
| CN102379303A (en) * | 2011-12-15 | 2012-03-21 | 安徽丰乐农化有限责任公司 | Wheat post-emergence compound herbicide |
| CN103651476A (en) * | 2013-09-11 | 2014-03-26 | 山东滨农科技有限公司 | Herbicide composition containing Pyrasulfotole and mesosulfuron |
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