CN101743988A - Herbicide composition for corn fields - Google Patents
Herbicide composition for corn fields Download PDFInfo
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- CN101743988A CN101743988A CN 201010101314 CN201010101314A CN101743988A CN 101743988 A CN101743988 A CN 101743988A CN 201010101314 CN201010101314 CN 201010101314 CN 201010101314 A CN201010101314 A CN 201010101314A CN 101743988 A CN101743988 A CN 101743988A
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- atrazine
- rimsulfuron
- sulphur humulone
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Abstract
The invention relates to a herbicide composition for preventing and removing weeds in farmland, which is a ternary herbicide prepared by using rimsulfuron, nitrate sulcotrione and atrazine as activity, wherein the weight ratio of the imsulfuron, the nitrate sulcotrione and the atrazine is (1-1.6) to (1-80) to (8-640), and the preferable weight ratio is (1-1.6) to (2.5-20) to (10-160). The cumulant of the imsulfuron, the nitrate sulcotrione and the atrazine is 5-90% of the total weight of the composition. The herbicide composition has the advantages of reasonable components, good weed removing effect, weed control spectrum expanding, the number of application reducing, control cost lowering, the generation of weed resistance slowing and good safety for crops, and meets the security requirements of pesticide formulations. The herbicide composition has a good control effect for grassy weeds and broad-leaved weeds in corn fields.
Description
Technical field
The present invention relates to a kind of corn field herbicide composition, be specifically related to a kind of herbicidal composition of forming by rimsulfuron, nitre sulphur humulone and atrazine active ingredient that is used for control of maize field grassy weed and broad leaved weed.
Background technology
The English common name rimsulfuron of rimsulfuron, molecular formula C
14H
17N
5O
7S
2, chemical name 1-(4,6-SDM-2-yl)-3-(3-ethyl sulfenyl-2-pyridine radicals sulfenyl) urea.Rimsulfuron is a kind of amino acid compound inhibitor, thereby by suppressing the essential valine and the biosynthesis of isoleucine cell differentiation and plant growing is stopped.Absorb by the root leaf, conduct to meristematic tissue very soon.This medicine can effectively be prevented and kill off most of annual and perennial weeds in the corn field, also can be used for potato and tomato Tanaka.
The English common name mesotrione of nitre sulphur humulone, molecular formula C
14H
13NO
7S, chemical name 2-(2-nitro-4-mesyl benzene adds acyl) cyclohexane-1,3-diketone.Nitre sulphur humulone is a wide spectrum selective herbicide before a kind of bud that can suppress the two oxidase (HPPD) of medical midbodies of para (ortho)-hydroxybenzoic acetone acid esters and behind the seedling, easily in plant xylem and phloem conduction, have action of contace poison and wholesomeness, effectively the broadleaved herb wanted of the control of maize owner of farmland and some grassy weeds such as piemarker, three-coloured amaranth, lamb's-quarters, knotweed, barnyard grass grass, lady's-grass etc. are relatively poor to some grassy weed control efficiency.
The English common name atrazine of atrazine, other Chinese name atrazine, green bristlegrass is gone to the greatest extent, and Aunar draws piperazine, and the garden is protected clean, molecular formula C
8H
14ClN
5Atrazine is before the selectivity inner sucting conduction type seedling, herbicide after seedling.Root absorption is main, and cauline leaf absorbs seldom, is transmitted to plant meristematic tissue and leaf portion rapidly, disturbs photosynthesis, and weeds are caused death.
In actual use, rimsulfuron has the better prevention effect to the most of annual and perennial weed between corn field, but not satisfactory to part broad leaved weed preventive effect, and the corn weeds in field has the trend that strengthens gradually to the rimsulfuron resistance; Atrazine is as a kind of corn field herbicide commonly used, weeds are had prevent and kill off preferably and sealing effect, but since the resistance problem usage amount increase year by year; Nitre sulphur humulone has preventive effect preferably to broad leaved weed between corn field, but relatively poor to some grassy weed preventive effects.Therefore, rimsulfuron, nitre sulphur humulone and atrazine rationally are mixed, have remarkable synergy, enlarge the control of weeds spectrum, reduce spraying times, reduce the control cost, slow down the effect that the weeds resistance produces.
Summary of the invention
The object of the present invention is to provide a kind of component reasonable, herbicidal effect is good, and significantly synergy, control of weeds are composed wide, and spraying times is few, and drug cost is low, the corn field herbicide composition that is difficult for developing immunity to drugs.
Another object of the present invention is to provide above-mentioned composition to be used for preventing and kill off the purposes of grassy weed and broad leaved weed between corn field.
In order to overcome the defective of existing unitary agent, technical scheme of the present invention is to solve like this:
The present invention contains active component rimsulfuron, nitre sulphur humulone and atrazine, wherein rimsulfuron, nitre sulphur humulone and the triangular weight ratio of atrazine are (1～1.6): (1～80): (8～640), preferably (1～1.6): (2.5～20): (10～160), more preferably (1～1.6): (2.5～20): (10～120).The cumulant of rimsulfuron, nitre sulphur humulone and atrazine is 10%～90% of a described composition total weight, is preferably 20%～60%.
According to method known in those skilled in the art, but the preparation formulation that corn field herbicide composition of the present invention can be prepared is water dispersible granules, suspending agent dispersed oil suspending agent or wetting powder.
For water dispersible granules, those skilled in the art are familiar with the use corresponding adjuvants and finish the present invention very much.In dispersant such as polycarboxylate, lignosulfonates, the alkylnaphthalene sulfonate one or more; In wetting agent such as alkyl sulfate, alkylsulfonate, the naphthalene sulfonate one or more; In disintegrant such as ammonium sulfate, urea, sucrose, the glucose one or more; In binding agent such as diatomite, corn starch, PVA, carboxymethyl (ethyl) cellulose family one or more; Filler such as diatomite, kaolin, white carbon, fine particle calcium carbonate, talcum powder, attapulgite, potter's clay one or more.
To suspending agent, spendable auxiliary agent has: among dispersant such as polycarboxylate, lignosulfonates, alkylnaphthalene sulfonate (dispersing agent NNO), the TERSPERSE 2425 (U.S. Huntsman Corporation produces, the alkyl naphthalene sulfonic acid salt) one or more; Alkyl phenol formaldehyde resin polyoxyethylene ether), farming breast 2201, this dish-60# (common name: Span60), Tween-60 # (common name: the polyoxyethylene sorbitan stearate), agricultural newborn 1601# (common name: triphen ethyl-phenol polyoxyethylene polyoxypropylene block polymer), among the TERSPERSE 4894 (U.S. Huntsman Corporation product) one or more emulsifier such as Nongru-700 # (common name:; Among wetting agent such as alkylphenol-polyethenoxy base ether formaldehyde condensation products sulphate, alkylphenol-polyethenoxy base ether phosphate, phenethyl phenol polyethenoxy base ether phosphate, alkyl sulfate, alkylsulfonate, naphthalene sulfonate, the TERSPERSE 2500 (U.S. Huntsman Corporation product) one or more; In thickener such as xanthans, polyvinyl alcohol, bentonite, the aluminium-magnesium silicate one or more; In preservative such as formaldehyde, benzoic acid, the Sodium Benzoate one or more; In stabilizing agent such as epoxidized soybean oil, epoxychloropropane, the triphenyl phosphate one or more; Defoamer such as organic silicon defoamer; In antifreezing agent such as ethylene glycol, propane diols, glycerine, urea, inorganic salts such as the sodium chloride one or more.
To oil-suspending agent, spendable auxiliary agent has: among dispersant such as polycarboxylate, lignosulfonates, alkylnaphthalene sulfonate, the TERSPERSE 2425 (U.S. Huntsman Corporation produces, the alkyl naphthalene sulfonic acid salt) one or more; The sorbitan fatty acid ester APEO), agricultural newborn 1601# (common name: triphen ethyl-phenol polyoxyethylene polyoxypropylene block polymer), among TERSPERSE 4894 (the U.S. Huntsman Corporation product) TERSPERSE 2500 (U.S. Huntsman Corporation product) one or more emulsifier such as Nongru-700 # (common name: alkyl phenol formaldehyde resin polyoxyethylene ether, farming breast 2201, this dish-60# (common name sorbitan monostearate), Tween-60 # (common name:; Among wetting agent such as alkylphenol-polyethenoxy base ether formaldehyde condensation products sulphate, alkylphenol polyoxyethylene phosphate, phenethyl phenol polyethenoxy base ether phosphate, alkyl sulfate, alkylsulfonate, naphthalene sulfonate, the TERSPERSE 2500 (U.S. Huntsman Corporation product) one or more; In thickener such as white carbon, polyvinyl alcohol, bentonite, the aluminium-magnesium silicate one or more; In antifreezing agent such as ethylene glycol, propane diols, glycerine, urea, inorganic salts such as the sodium chloride one or more; In stabilizing agent such as epoxidized soybean oil, epoxychloropropane, the triphenyl phosphate one or more; In dispersion medium such as soybean oil, rapeseed oil, corn oil, the methyl oleate one or more.
To wetting powder, spendable auxiliary agent has: in dispersant such as polycarboxylate, lignosulfonates, the alkylnaphthalene sulfonate one or more; In wetting agent such as alkyl sulfate, alkylsulfonate, the naphthalene sulfonate one or more; Filler such as ammonium sulfate, urea, sucrose, glucose, diatomite, kaolin, white carbon, fine particle calcium carbonate, talcum powder, attapulgite, potter's clay one or more.
Component of the present invention is reasonable, and herbicidal effect is good, and synergy is remarkable, enlarges the control of weeds spectrum, reduces spraying times, reduces the control cost, slows down the generation of weeds resistance, and is good to crop safety, meets the security requirement of pesticidal preparations.The present invention has outstanding control efficiency to grassy weed between corn field and broad leaved weed.
Embodiment
The invention will be further described below in conjunction with embodiment.
Example of formulations 1:
Take by weighing 1% rimsulfuron, 5% nitre sulphur humulone, 50% atrazine, 3%TERSPERSE 2700 (polycarboxylate, U.S. Huntsman Corporation produces), 2% dispersing agent NNO (alkylnaphthalene sulfonate formaldehyde condensation products), 1% Nekal BX (nekal), 1%K-12 (lauryl sodium sulfate), 2% white carbon black, 5% sulphur ammonium, diatomite adds to 100% weight portion.The method of the frequent regulation of above-mentioned raw materials water intaking dispersible granule is promptly mixed, ultra micro comminution by gas stream, mixing, granulation step are produced 56% rimsulfuron nitre sulphur humulone atrazine water dispersible granule.
Example of formulations 2
Take by weighing 1.2% rimsulfuron, 8% nitre sulphur humulone, 50.8% atrazine, 4%TERSPERSE 2700 (polycarboxylate, U.S. Huntsman Corporation produces), 3% sodium lignin sulfonate, 3% Nekal BX (nekal), 2%K-12 (lauryl sodium sulfate), 3% white carbon black, 5% urea, 5% corn starch, attapulgite adds to 100% weight portion.The method of the frequent regulation of above-mentioned raw materials water intaking dispersible granule is promptly mixed, ultra micro comminution by gas stream, mixing, granulation step are produced 60% rimsulfuron nitre sulphur humulone atrazine water dispersible granule.
Example of formulations 3:
Take by weighing 0.8% rimsulfuron, 16% nitre sulphur humulone, 63.2% atrazine, 5%TERSPERSE 2700 (polycarboxylate, U.S. Huntsman Corporation produces), 2% dispersing agent NNO (alkylnaphthalene sulfonate formaldehyde condensation products), 2% Nekal BX (nekal), 2%K-12 (lauryl sodium sulfate), 1% carboxymethyl cellulose, 5% glucose, kaolin adds to 100% weight portion.The method of the frequent regulation of above-mentioned raw materials water intaking dispersible granule is promptly mixed, ultra micro comminution by gas stream, mixing, granulation step are produced 80% rimsulfuron nitre sulphur humulone atrazine water dispersible granule.
Example of formulations 4
Take by weighing 1.2% rimsulfuron, 7% nitre sulphur humulone, 21.8% atrazine, 3%TERSPERSE 4894 (U.S. Huntsman Corporation product), 2%TERSPERSE 2500 (U.S. Huntsman Corporation product), 3%TERSPERSE 2425 (U.S. Huntsman Corporation product), 10% epoxidized soybean oil, 3% white carbon, 5% ethylene glycol, soybean oil adds to 100% weight portion.Above-mentioned raw materials is through mixing, and high speed shear is disperseed 30min, but with making 30% rimsulfuron nitre sulphur humulone atrazine dispersed oil suspending agent behind the sand mill sand milling.
Example of formulations 5
Take by weighing 0.3% rimsulfuron, 12% nitre sulphur humulone, 22.7% atrazine, 3%TERSPERSE 4894 (U.S. Huntsman Corporation product), 2%TERSPERSE 2500 (U.S. Huntsman Corporation product), 3%TERSPERSE 2425 (U.S. Huntsman Corporation product), 2% epoxychloropropane, 3% bentonite, 5% glycerine, methyl oleate and add to 100% weight portion.Above-mentioned raw materials is through mixing, and high speed shear is disperseed 30min, but with making 35% rimsulfuron nitre sulphur humulone atrazine dispersed oil suspending agent behind the sand mill sand milling.
Example of formulations 6
Take by weighing 1.6% rimsulfuron, 1% nitre sulphur humulone, 25.4% atrazine, 4%TERSPERSE 4894 (U.S. Huntsman Corporation product), 3%TERSPERSE 2500 (U.S. Huntsman Corporation product), 3%TERSPERSE 2425 (U.S. Huntsman Corporation product), 2% epoxychloropropane, 3% white carbon, 5% glycerine, corn oil and add to 100% weight portion.Above-mentioned raw materials is through mixing, and high speed shear is disperseed 30min, but with making 28% rimsulfuron nitre sulphur humulone atrazine dispersed oil suspending agent behind the sand mill sand milling.
Example of formulations 7
Take by weighing 1% rimsulfuron, 7% nitre sulphur humulone, 32% atrazine, 3%TERSPERSE 4894 (U.S. Huntsman Corporation product), 1%TERSPERSE 2500 (U.S. Huntsman Corporation product), 2% dispersing agent NNO, 0.3% xanthans, 5% propane diols, 0.5% benzoic acid, 0.5% silicone defoaming agent (trade name: s-29 Nanjing "four news" (new ideas applied chemistry product company produces), 1% epoxychloropropane, deionized water adds to 100% weight portion.Above-mentioned raw materials is through mixing, and high speed shear is disperseed 30min, with the rimsulfuron nitre sulphur humulone atrazine suspending agent that makes 40% behind the sand mill sand milling.
Example of formulations 8
Take by weighing 0.05% rimsulfuron, 0.05% nitre sulphur humulone, 32% atrazine, 4%TERSPERSE4894 (U.S. Huntsman Corporation product), 1.5%TERSPERSE 2500 (U.S. Huntsman Corporation product), 2%TERSPERSE 2425 (U.S. Huntsman Corporation product), 0.2% aluminium-magnesium silicate, 5% ethylene glycol, 0.5% formaldehyde, 0.5% silicone defoaming agent (trade name: s-29 Nanjing "four news" (new ideas applied chemistry product company produces), 2% triphenyl phosphate, deionized water adds to 100% weight portion.Above-mentioned raw materials is through mixing, and high speed shear is disperseed 30min, with the rimsulfuron nitre sulphur humulone atrazine suspending agent that makes 31% behind the sand mill sand milling.
Example of formulations 9
Take by weighing 0.8% rimsulfuron, 40% nitre sulphur humulone, 4% atrazine, 5%TERSPERSE 4894 (U.S. Huntsman Corporation product), 2%TERSPERSE 2500 (U.S. Huntsman Corporation product), 3%TERSPERSE 2425 (U.S. Huntsman Corporation product), 0.2% xanthans, 5% propane diols, 0.5% benzoic acid, 0.5% silicone defoaming agent (trade name: s-29 Nanjing "four news" (new ideas applied chemistry product company produces), 1% epoxychloropropane, deionized water adds to 100% weight portion.Above-mentioned raw materials is through mixing, and high speed shear is disperseed 30min, with the rimsulfuron nitre sulphur humulone atrazine suspending agent that makes 44.8% behind the sand mill sand milling.
Example of formulations 10
Take by weighing 1.6% rimsulfuron, 1% nitre sulphur humulone, 8% atrazine, 5% calcium lignosulfonate, 2% Nekal BX (nekal), 2%K-12 (lauryl sodium sulfate), 5% white carbon black, kaolin and add to 100% weight portion.Above-mentioned raw materials makes 10.6% rimsulfuron nitre sulphur humulone atrazine wetting powder through mixing behind the comminution by gas stream.
Example of formulations 11
Take by weighing 1% rimsulfuron, 80% nitre sulphur humulone, 8% atrazine, 3% calcium lignosulfonate, 2%TERSPERSE 2700 (polycarboxylate, U.S. Huntsman Corporation produces), 1% Nekal BX (nekal), 1%K-12 (lauryl sodium sulfate), 2% white carbon black, kaolin adds to 100% weight portion.Above-mentioned raw materials makes 89% rimsulfuron nitre sulphur humulone atrazine wetting powder through mixing behind the comminution by gas stream.
Example of formulations 12
Take by weighing 1.2% rimsulfuron, 24% nitre sulphur humulone, 50% atrazine, 5% calcium lignosulfonate, 5% dispersing agent NNO (alkylnaphthalene sulfonate formaldehyde condensation products), 2% Nekal BX (nekal), 2%K-12 (lauryl sodium sulfate), 5% white carbon black, attapulgite and add to 100% weight portion.Above-mentioned raw materials makes 75.2% rimsulfuron nitre sulphur humulone atrazine wetting powder through mixing behind the comminution by gas stream.
Example of formulations 13
Take by weighing 1.6% rimsulfuron, 2.5% nitre sulphur humulone, 50% atrazine, 4% calcium lignosulfonate, 4% dispersing agent NNO (alkylnaphthalene sulfonate formaldehyde condensation products), 2% Nekal BX (nekal), 2%K-12 (lauryl sodium sulfate), 5% white carbon black, attapulgite and add to 100% weight portion.Above-mentioned raw materials makes 54.1% rimsulfuron nitre sulphur humulone atrazine wetting powder through mixing behind the comminution by gas stream.
Example of formulations 14
Take by weighing 0.5% rimsulfuron, 9.5% nitre sulphur humulone, 80% atrazine, 3% calcium lignosulfonate, 1% Nekal BX (nekal), 1%K-12 (lauryl sodium sulfate), 2% white carbon black, kaolin and add to 100% weight portion.Above-mentioned raw materials makes 90% rimsulfuron nitre sulphur humulone atrazine wetting powder through mixing behind the comminution by gas stream.
Example of formulations 15
Take by weighing 1.6% rimsulfuron, 20% nitre sulphur humulone, 10% atrazine, 3%TERSPERSE 2700 (polycarboxylate, U.S. Huntsman Corporation produces), 3% sodium lignin sulfonate, 1%K-12 (lauryl sodium sulfate), ammonium sulfate adds to 100% weight portion.Above-mentioned raw materials makes 31.6% rimsulfuron nitre sulphur humulone atrazine wetting powder through mixing behind the comminution by gas stream.
In order to prevent and kill off the corn field weed in the agricultural production, the inventor has carried out mutual composite synergy research with effective active compositions such as rimsulfuron, nitre sulphur humulone, atrazines, the indoor pot method is carried out cauline leaf and is handled test reference " agricultural chemicals indoor bioassay test rule weed killer herbicide the 7th part ".
1.1 reagent agent
The former medicine of 96.2% rimsulfuron
The former medicine of 94% nitre sulphur humulone
The former medicine of 98% atrazine
1.2 for the examination weeds
Anti-skill amaranth A maranthus retroflexus L
Lady's-grass Digitaria sanguinalis (Linn.) Scop.
1.3 experimental scheme
41 processing are established in this test altogether, wherein rimsulfuron establishes 0.25,0.5,1,2,5 dosage of 4 gram/hectares are handled, nitre sulphur humulone establishes 2.5,5.0,10,20,5 dosage of 40 gram/hectares are handled, atrazine establishes 20,40,80,160,5 dosage of 320 gram/hectares are handled, rimsulfuron+nitre sulphur humulone+atrazine three uses with and sets up 0.25+2.5+20 separately, 0.25+5.0+40,0.25+10+80,0.25+20+160,0.25+40+320,0.5+2.5+20,0.5+5.0+40,0.5+10.0+80,0.5+20+160,0.5+40+320,1+2.5+20,1+5.0+40,1+10+80,1+20.0+160,1+40.0+320,2+2.5+20,2+5.0+40,2+10.0+80,2+20.0+160,2+40.0+320,4+2.5+20,4+5.0+40,4+10.0+80,4+20.0+160,4+40.0+320 25 dosage ratios of gram/hectare are handled, other establishes 1 auxiliary agent contrast, amount to 41 processing, repeat four times.
1.4 test method
Medicament adopts now with the current, after former medicine adopts dmso solution, adds the Tween 80 emulsifier, prepares 10% mother liquor.According to the medicament characteristic, 5 dosage from high to low are set.
Potted plant cultivation is adopted in the cultivation of target weeds, with 11 * 12cm plastic basin, will not use air-dry, the back dress basin that sieves of the soil of adopting back in the farmland of weed killer herbicide, quantitative 4/5 place of dry ground in the basin, P in soil H value 7.0, the content of organic matter 1.2%.Adopt basin alms bowl bottom infiltrating irrigation mode, after making soil moistening fully, Amaranthus retroflexus and the lady's-grass seed that last year, gathered in the field are soaked each about 30 even program request of back at soil surface, blinding 0.5cm-1 centimetre is placed on cultivation in the greenhouse, 28～32 ℃/18～25 ℃ of indoor temperatures (d/n), relative moisture 75%+15%.With the moisturizing of basin alms bowl bottom infiltrating irrigation mode, keep soil moisture.In the lady's-grass 2-4 leaf phase, put spray medicine (ASS-1 type pesticide spraying system, DG8003 shower nozzle, atomisation pressure 2.75MPa, spouting liquid 40kg/ mu) in the spray tower during broad leaved weed Amaranthus retroflexus 3-5 leaf, treat after the dispenser that natural air drying is placed on cultivation observation in the greenhouse.
1.5 weeds investigation and analytical method
Periodical visual inspection is observed growth conditions, poisoning symptom and the poisoning degree of weeds after the dispenser, the record symptom of chemical damage, and the type of action of medicament is used in 14 days and the evaluation of 21 days employing Colby methods with behind the medicine, further inquires into the reasonability of proportioning.
1.5.1 ocular estimate
After the dispenser 14 days with ocular estimate investigation records activity of weeding, adopt following grade scale to investigate:
1 grade: do not have grass;
2 grades: the 0-2.5% that is equivalent to the blank district;
3 grades: the 2.6-5% that is equivalent to the blank district;
4 grades: the 5.1-10% that is equivalent to the blank district;
5 grades: the 10.1-15% that is equivalent to the blank district;
6 grades: the 15.1-25% that is equivalent to the blank district;
7 grades: the 25.1-35% that is equivalent to the blank district;
8 grades: the 35.1-67.5% that is equivalent to the blank district;
9 grades: the 67.6-100% that is equivalent to the blank district;
1.5.2 absolute value investigation method
Each processing ground chlorenchyma of clip adopts scales/electronic balance weighing in the time of 21 days, calculates actual survival rate E, adopts formula (2) theory of computation survival rate E0, checks with the Colby method, and the evaluation three uses the synergy type to weeds with.
Actual survival rate E (%)=treatment region weeds fresh weight * 100/ check plot weeds fresh weight (1)
Theoretical survival rate E0=XYZ/100 (n-1) (2)
When E0-E＞10%, illustrate to produce synergistic effect, when E0-E＜-10%, illustrate to produce antagonism, when E0-E between ± 10% the time, the generation addition is described.
2 results and analysis
2.1 weeds death condition
After the dispenser 3 days, the Amaranthus retroflexus plant meristematic tissue that uses the agent of nitre sulphur humulone list to handle the yellow symptom occurs and causes withered spot thereupon, dispenser 5 days rimsulfurons, atrazine high doses are handled the Amaranthus retroflexus leaf margin and are dried up, the yellow of younger ones in an age group's lady's-grass blade tip, respectively to handle pony Tang blade tip seriously withered for the 15th day rimsulfuron after the dispenser, the yellow of Amaranthus retroflexus severe deformities, Lao Ye comes off.The most of lady's-grass Lao Ye of 20 days rimsulfurons and composite processing is withered and yellow after the dispenser, Amaranthus retroflexus death.
2.2 14 days range estimation results behind the medicine:
Behind the medicine 14 days, each treatment region weeds is estimated investigation, the result is as follows:
Table 1 rimsulfuron, nitre sulphur humulone and atrazine are used the visual observation (level) of 14 days Amaranthus retroflexus behind the medicine with
Table 2 rimsulfuron, nitre sulphur humulone and atrazine are used the visual observation (level) of 14 days grassy weed lady's-grass behind the medicine with
2.3 21 days investigation results behind the medicine
Table 3 rimsulfuron, nitre sulphur humulone and atrazine are used with Amaranthus retroflexus actual measurement survival rate and theoretical survival rate
Rimsulfuron, nitre sulphur humulone and atrazine are used the co-toxicity to Amaranthus retroflexus with: nitre sulphur humulone, atrazine are good to the preventive effect of Amaranthus retroflexus, susceptible weeds for medicament, rimsulfuron is relatively poor relatively to the preventive effect of Amaranthus retroflexus, along with the increase of nitre sulphur humulone, atrazine consumption, use the preventive effect raising of back with to Amaranthus retroflexus.
Table 4 rimsulfuron, nitre sulphur humulone and atrazine are used with the actual measurement survival rate of lady's-grass and theoretical survival rate
Can find out from above result of the test, rimsulfuron, nitre sulphur humulone and atrazine are used with, rimsulfuron, nitre sulphur humulone and the triangular weight ratio of atrazine are (1～1.6): (1～80): when (8～640), preventive effect to Amaranthus retroflexus and lady's-grass all belongs to synergistic effect, improved total preventive effect, the three uses certain feasibility with on producing.
Biological Examples 1 is prevented and kill off the corn field weed field trial
Carried out 30% rimsulfuron nitre sulphur humulone atrazine (1.2%+7%+21.8%) oil-suspending agent in the Wugong County, Shaanxi Province for the local and prevented and kill off the corn field annual weed test of pesticide effectiveness, verified that this medicament is to the control efficiency of corn field weed, effective dose and to the safety of corn.Trial crops is a corn, controlling object is lady's-grass (Digitaria sanguinalis (L.) Scop), green foxtail (Setaria virid (L.) Beauv.), the rhizome of nutgrass flatsedge (Rhizoma Cyperi (Nutgrass Galingale Rhizome), lamb's-quarters (Chenopodium glaucum Linn), Amaranthus retroflexus (Amaranthus retroflexus L.) field bindweed (Convolvulus arvensis L.) weeds leaf age is in 2～5 leaf phases.Test medicine and dosage are 30% rimsulfuron nitre sulphur humulone atrazine oil-suspending agent 60g/ mu, 70g/ mu, 80g/ mu, 550 grams per liter nitre sulphur humulone atrazine (50 grams per liters+500 grams per liters) suspending agent 120ml/ mus, 50% rimsulfuron atrazine (1%+49%) wetting powder 120g/ mu, 7% rimsulfuron nitre sulphur humulone (1%+6%) oil suspending agent 120g/ mu, 25% rimsulfuron water dispersible granules 6g/ mu, 80% atrazine wetting powder 100g/ mu, 100 grams per liter nitre sulphur humulone suspending agent 100ml/ mus.Adopt conventional spray-on process.
Each chemicals treatment district compares with contiguous blank district, estimates the weeds population, with the indexs such as quantity, cover degree, height and healthy and strong growing way of weeds, represents (with contrast is 0%, and death is 100% fully) with percentage.
Every sub-district is selected 5 points, every some 1m at random
2Carry out sample investigation, record weeds kind, weeds strain number, cover degree and weeds weight.
The drug effect computational methods:
In the formula: CK is the remaining careless number in blank district;
PT is the remaining careless number in chemicals treatment district.
Table 530% rimsulfuron nitre sulphur humulone atrazine oil-suspending agent is to the corn field weed preventive effect
Table 630% rimsulfuron nitre sulphur humulone atrazine oil-suspending agent is to the corn field weed preventive effect
Table 730% rimsulfuron nitre sulphur humulone atrazine oil-suspending agent is to the corn field weed preventive effect
Table 830% rimsulfuron nitre sulphur humulone atrazine oil-suspending agent is to the corn field weed preventive effect
Table 930% rimsulfuron nitre sulphur humulone atrazine oil-suspending agent is to the corn field weed preventive effect
Table 1030% rimsulfuron nitre sulphur humulone atrazine oil-suspending agent is to the corn field weed preventive effect
The average preventive effect analysis of table 11
Field test results shows: 30% rimsulfuron nitre sulphur humulone atrazine oil-suspending agent has significant preventive effect to corn field weed, and the preventive effect of its 70g/ mu, 80g/ mu obviously is better than contrasting the preventive effect of medicament 550 grams per liter nitre sulphur humulone atrazine suspending agent 120ml/ mus, 50% rimsulfuron atrazine wetting powder 120g/ mu, 7% rimsulfuron nitre sulcotrione oil suspension concentrate 120g/ mu, 25% rimsulfuron water dispersible granules 6g/ mu, 80% atrazine wetting powder 100g/ mu, 100 grams per liter nitre sulphur humulone suspending agent 100mL/ mus; Solved after 3 kinds of components are mixed that the agent of rimsulfuron list is poor to part broad leaved weed preventive effect, the agent of atrazine list is to grassy weed and a nutgrass flatsedge weak effect and the serious difficult problem of nitre sulphur humulone single use grassy weed demutation, and synergy is remarkable, improved the comprehensive preventive effect of corn field weed and saved drug cost, to corn safety.
Biological Examples 2 is prevented and kill off the corn field weed field trial
Carried out 56% rimsulfuron nitre sulphur humulone atrazine (1%+5%+50%) water dispersible granules at the Cai Zhuan south of a town, Weizhi County, Henan Province Meng Zhuan and prevented and kill off the corn field annual weed test of pesticide effectiveness, verified that this medicament is to the control efficiency of corn field weed, effective dose and to the safety of corn.Trial crops is a corn, and controlling object is a lady's-grass, green foxtail, and the rhizome of nutgrass flatsedge, lamb's-quarters, Amaranthus retroflexus, field bindweed weeds leaf age is in 3～6 leaf phases.Test medicine and dosage are 56% rimsulfuron nitre sulphur humulone atrazine water dispersible granule 60g/ mu, 80g/ mu, 100g/ mu, 550 grams per liter nitre sulphur humulone atrazine (50 grams per liters+500 grams per liters) suspending agent 120ml/ mus, 50% rimsulfuron atrazine (1%+49%) wetting powder 120g/ mu, 7% rimsulfuron nitre sulphur humulone (1%+6%) oil suspending agent 120g/ mu, 25% rimsulfuron water dispersible granules 6g/ mu, 80% atrazine wetting powder 100g/ mu, 100 grams per liter nitre sulphur humulone suspending agent 100ml/ mus.Adopt conventional spray-on process.
Each chemicals treatment district compares with contiguous blank district, estimates the weeds population, with the indexs such as quantity, cover degree, height and healthy and strong growing way of weeds, represents (with contrast is 0%, and death is 100% fully) with percentage.Every sub-district is selected 5 points, every some 1m at random
2Carry out sample investigation, record weeds kind, weeds strain number, cover degree and weeds weight.
Table 1256% rimsulfuron nitre sulphur humulone atrazine water dispersible granule is to the corn field weed preventive effect
Table 1356% rimsulfuron nitre sulphur humulone atrazine water dispersible granule is to the corn field weed preventive effect
Table 1456% rimsulfuron nitre sulphur humulone atrazine water dispersible granule is to the corn field weed preventive effect
Table 1556% rimsulfuron nitre sulphur humulone atrazine water dispersible granule is to the corn field weed preventive effect
Table 1656% rimsulfuron nitre sulphur humulone atrazine water dispersible granule is to the corn field weed preventive effect
Table 1756% rimsulfuron nitre sulphur humulone atrazine water dispersible granule is to the corn field weed preventive effect
The average preventive effect table of table 18
Field test results shows: 56% rimsulfuron nitre sulphur humulone atrazine water dispersible granule has significant preventive effect to corn field weed, its 80g/ mu, the preventive effect of 100g/ mu is better than contrasting medicament 550 grams per liter nitre sulphur humulone atrazine (50 grams per liters+500 grams per liters) suspending agent 120ml/ mus, 50% rimsulfuron atrazine (1%+49%) wetting powder 120g/ mu, 7% rimsulfuron nitre sulphur humulone (1%+6%) oil suspending agent 120g/ mu, 25% rimsulfuron water dispersible granules 6g/ mu, 80% atrazine wetting powder 100g/ mu, the preventive effect of 100 grams per liter nitre sulphur humulone suspending agent 100ml/ mus; Solved after 3 kinds of components are mixed that the agent of rimsulfuron list is poor to part broad leaved weed preventive effect, the agent of atrazine list is to grassy weed and a nutgrass flatsedge weak effect and the serious difficult problem of nitre sulphur humulone single use grassy weed demutation, and synergy is remarkable, improved the comprehensive preventive effect of corn field weed and saved drug cost, to corn safety.
Biological Examples 3: prevent and kill off the corn field weed field trial
Carried out 40% rimsulfuron nitre sulphur humulone atrazine (1%+7%+32%) suspending agent in the Wugong County, Shaanxi Province for the local and prevented and kill off the corn field of summer annual weed test of pesticide effectiveness, verified that this medicament is to the control efficiency of spring corn field weed, effective dose and to the safety of spring corn.Trial crops is a corn, and controlling object is a lady's-grass, green foxtail, and the rhizome of nutgrass flatsedge, lamb's-quarters, Amaranthus retroflexus, field bindweed weeds leaf age are in 2～5 leaf phases.Test medicine and dosage are 40% rimsulfuron nitre sulphur humulone atrazine suspending agent 60g/ mu, 80g/ mu, 100g/ mu, 550 grams per liter nitre sulphur humulone atrazine (50 grams per liters+500 grams per liters) suspending agent 120ml/ mus, 50% rimsulfuron atrazine (1%+49%) wetting powder 120g/ mu, 7% rimsulfuron nitre sulphur humulone (1%+6%) oil suspending agent 120g/ mu, 25% rimsulfuron water dispersible granules 6g/ mu, 80% atrazine wetting powder 100g/ mu, 100 grams per liter nitre sulphur humulone suspending agent 100ml/ mus.Adopt conventional spray-on process.
Each chemicals treatment district compares with contiguous blank district, estimates the weeds population, with the indexs such as quantity, cover degree, height and healthy and strong growing way of weeds, represents (with contrast is 0%, and death is 100% fully) with percentage.
Every sub-district is selected 5 points, every some 1m at random
2Carry out sample investigation, record weeds kind, weeds strain number, cover degree and weeds weight.
Table 1940% rimsulfuron nitre sulphur humulone atrazine suspending agent is to the corn field weed preventive effect
Table 2040% rimsulfuron nitre sulphur humulone atrazine suspending agent is to the corn field weed preventive effect
Table 2140% rimsulfuron nitre sulphur humulone atrazine suspending agent is to the corn field weed preventive effect
Table 2240% rimsulfuron nitre sulphur humulone atrazine suspending agent is to the corn field weed preventive effect
Table 2340% rimsulfuron nitre sulphur humulone atrazine suspending agent is to the corn field weed preventive effect
Table 2440% rimsulfuron nitre sulphur humulone atrazine suspending agent is to the corn field weed preventive effect
The average preventive effect table of table 25
Field test results shows: 40% rimsulfuron nitre sulphur humulone atrazine suspending agent has significant preventive effect to corn field weed, its 80g/ mu, the preventive effect of 100g/ mu obviously is better than contrasting medicament 550 grams per liter nitre sulphur humulone atrazine (50 grams per liters+500 grams per liters) suspending agent 120ml/ mus, 50% rimsulfuron atrazine (1%+49%) wetting powder 120g/ mu, 7% rimsulfuron nitre sulphur humulone (1%+6%) oil suspending agent 120g/ mu, 25% rimsulfuron water dispersible granules 6g/ mu, 80% atrazine wetting powder 100g/ mu, the preventive effect of 100 grams per liter nitre sulphur humulone suspending agent 100ml/ mus; After being mixed, 3 kinds of medicaments solved the agent of rimsulfuron list to part broad leaved weed preventive effect difference and the agent of atrazine list problem to grassy weed and nutgrass flatsedge weak effect, the adding of this composition of nitre sulphur humulone simultaneously improves the comprehensive preventive effect of corn field weed greatly and has saved drug cost, to corn safety.
Comprehensively above-mentioned, component of the present invention is reasonable, and herbicidal effect is good, and synergy is remarkable, enlarges the control of weeds spectrum, reduces spraying times, reduces the control cost, slows down the generation of weeds resistance, and is good to crop safety, meets the security requirement of pesticidal preparations.
Claims (7)
1. corn field herbicide composition, it is characterized in that: contain active component rimsulfuron, nitre sulphur humulone and atrazine, wherein rimsulfuron, nitre sulphur humulone and the triangular weight ratio of atrazine are (1～1.6): (1～80): (8～640).
2. corn field herbicide composition according to claim 1 is characterized in that: rimsulfuron, nitre sulphur humulone and the triangular weight ratio of atrazine are (1～1.6): (2.5～20): (10～160).
3. corn field herbicide composition according to claim 1 and 2 is characterized in that: the cumulant of rimsulfuron, nitre sulphur humulone and atrazine is 10%～90% of a described composition total weight.
4. corn field herbicide composition according to claim 3 is characterized in that: the cumulant of rimsulfuron, nitre sulphur humulone and atrazine is 20%～60% of a described composition total weight.
5. corn field herbicide composition according to claim 1 is characterized in that: described composition can be mixed with agricultural and go up any formulation that allows.
6. corn field herbicide composition according to claim 5 is characterized in that: but described composition is water dispersible granules, suspending agent dispersed oil suspending agent or wetting powder.
7. the described corn field herbicide composition of claim 1 is being prevented and kill off the application in the grassy weed and broad leaved weed between corn field.
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| CN1187298A (en) * | 1998-01-19 | 1998-07-15 | 张家口市宣化农药厂 | Compound herbicide |
| GB0116956D0 (en) * | 2001-07-11 | 2001-09-05 | Syngenta Ltd | Weed control process |
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