CN104365616A - Herbicide composition for corn field - Google Patents
Herbicide composition for corn field Download PDFInfo
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- CN104365616A CN104365616A CN201410593345.2A CN201410593345A CN104365616A CN 104365616 A CN104365616 A CN 104365616A CN 201410593345 A CN201410593345 A CN 201410593345A CN 104365616 A CN104365616 A CN 104365616A
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Abstract
The invention discloses a herbicide composition for a corn field. The herbicide composition comprises sulfentrazone, atrazine and isoxadifen-ethyl (or salt of isoxadifen-ethyl), wherein the weight ratio of sulfentrazone to atrazine to isoxadifen-ethyl is (1-50) to (1-50) to (1-25). The herbicide composition can be prepared into the following preparations: wettable powder, suspending agent, dispersed oil suspending agent, microemulsion, emulsion in water or water dispersible granules. The herbicide composition has a remarkable synergistic effect, and can be used for controlling graminaceous weeds, broad-leaved weeds and cyperaceae weeds including crab grass, green bristlegrass, eleusine indica, chenopodium album, dayflower, sonchus brachyotus, cephalanoplos seyetum, purslane, abutilon and the like which are difficult to control; after the herbicide composition is used, the effectiveness of all single preparations can be improved, the drug resistance of the weeds can be obviously delayed, the usage amount of the pesticide is reduced, and the agricultural cost is lowered. Isoxadifen-ethyl (or salt of isoxadifen-ethyl) is fed into the herbicide composition, so that the herbicide composition is safe for crop corns and is also used for sweet corns.
Description
Technical field
The present invention relates to technical field of pesticide combination, be specifically related to a kind of Herbicidal combinations containing sulfentrazone, atrazine and isoxadifen (or salt of isoxadifen).
Background technology
Corn is the important cereal crops of China, forage crop and the raw material of industry.Along with the development of the industries such as livestock breeding, food processing, wine-making industry and biodiesel, the market demand of corn constantly increases.The weeds of corn field occur general, of a great variety, and when Maize Seedling is by Weed infestation, plant is short and small, and bar spire is yellow, causes middle and later periods corn growth bad, Severe Reduction.Some after-seedling herbicide for maize are to difficult anti-weeds weak effects such as lady's-grass, green foxtail, eleusine indica, lamb's-quarters, dayflower, corn sow thistle, kitchen garden, piemarker and Siberian cockleburs.Corn field herbicide conventional on the market at present under not passing through agricultural experts' scientific guidance, or blindly expands dosage or uses in high temperature low humidity, low temperature and high relative humidity situation, is easy to produce corn phytotoxicity, has a strong impact on output, even dead seedling.
When using the weed killer herbicide of single active ingredient, affect by factors such as resistance, safety, herbicidal spectrums, its herbicidal efficacy can reduce greatly.Recompounded pesticide can solve that agricultural chemicals single dose toxicity is large, the problem of weak effect, less investment again, R&D cycle are short, meet the present situation of domestic agricultural chemicals enterprise, and the composite use between different agricultural chemicals can delay the generation of herbicide resistance, generally have and add effect effect, ideal result of use can be had.
Sulfentrazone, English common name: Sulfentrazone, chemical name: N-(the chloro-5-of 2,4-bis-(4-difluoromethyl-4,5-dihydro-3-methyl-5-oxo-1H-1,2,4-triazol-1-yl) phenyl) methylsulfonylaniline.Sulfentrazone is sepia solid, fusing point 121-123 DEG C, vapour pressure 1.3 × 10
-4pa (25 DEG C), proportion is 1.21g/ml (20 DEG C), and in water, solvability is 0.11 (pH 6), 0.78 (pH7), 16 (pH 7.5) (mg/L, 25 DEG C), dissolve in acetone and most of polar organic solvent.It belongs to proporphyrinogen oxidase inhibitor, by suppressing proporphyrinogen oxidase in Chlorophyll synthesis process, make in plant cell, to produce excessive protoporphyrin IX, the latter is sensitising agent, cause producing active oxygen in cell, finally cause cell membrane, vesicular membrane etc. to break, cell Dissolve things inside oozes out, and blade is withered, dead rapidly.The process of sulfentrazone cauline leaf, soil treatment, can be used for 1 year raw broad leaved weed, grassy weed and the nutgrass flatsedges etc. such as Tanaka's controls such as corn, Chinese sorghum, soybean, peanut are led a cow, Amaranthus retroflexus, lamb's-quarters, lady's-grass, green foxtail, Siberian cocklebur.Its chemical structural formula is:
Atrazine, English common name: Atrazine, the chloro-4-diethylin of chemical name: 2--6-isopropylamine base-1,3,5-triazines, has another name called atrazine.Sterling is colourless powder, fusing point 175.8 DEG C, vapour pressure 3.85 × 10
-2pa (25 DEG C), relative density 1.23g/ml.Solvability 33mg/L (22 DEG C, PH7) in water, solvability (g/L, 25 DEG C) in organic solvent: ethyl acetate 24, acetone 31, carrene 28, ethanol 15, toluene 4.0, n-hexane 0.11, normal octane 8.7.Atrazine is selectivity triazine herbicide, can soil treatment before bud, also can cauline leaf process after bud, for preventing and kill off annual gramineous weed and the broad leaved weeds such as corn, Chinese sorghum, sugarcane, fruit tree, nursery, forest land, also there is certain inhibitory action for some perennial weed.Absorb mainly through plant root and upwards conduct, suppressing the photosynthesis of weeds (as cocklebur, foxtail, Ambrosia plant and wild cucumber etc.), make it withered.Its chemical structural formula is:
Isoxadifen, English common name: Isoxadifen-ethyl, chemical name: 4,5-dihydro-5,5-diphenyl-1,2-oxazole-3-carboxylic acid, ethyl ester, belong to isoxazole herbicide safener, be mainly used in composite corn field herbicide after seedling reduce or eliminate poisoning, improve the drug resistance of crop, what solve difficult anti-weeds prevents and kill off problem.Its chemical structural formula is:
Sulfentrazone is mainly used in preventing and treating the multiple grassy weed in corn field and part broad leaved weed, but to the anti-heterodyne of part broad leaved weed, during high temperature low humidity, (more than 35 DEG C) use, and easily cause burn treating medicine spot, poisoning to part corn variety.Atrazine is mainly used in preventing and kill off the broad leaved weed in corn field and part grassy weed, uses for many years, and herbicide resistance increases, and under conventional amount used, herbicidal effect is general, to part grassy weed weak effect.
The present invention is through the checking of a large amount of indoor bioassay and field experiment; find with sulfentrazone, atrazine and isoxadifen (or salt of isoxadifen) for active ingredient carry out composite after; herbicidal spectrum improves greatly, and safety improves greatly, and quick-acting is obviously strengthened; also there is certain prolongation lasting period; and dosage is lower, reduce agricultural cost, toxicity is less; residual quantity is less, advantageously in environmental protection.Experiment confirms, three is composite has very strong synergistic effect, and Weeding safety increases greatly, and can relevant sulfentrazone carry out composite research with atrazine, isoxadifen three kinds of active principles, there is not yet relevant report at home and abroad at present.
Summary of the invention
The object of the invention is to solve existing corn field herbicide to part grassy weed with broad leaved weed control efficiency is poor or the technical problem of poisoning, a kind of corn field herbicide of ternary built is provided.This weed killer herbicide not only can prevent and treat multiple grassy weed, broad leaved weed and the sedge weed that sulfentrazone is used alone Shi Suoneng control, and to the grassy weed of the difficult control of part and the synergy of broad leaved weed very remarkable, the difficult anti-weeds such as lady's-grass, green foxtail, eleusine indica, lamb's-quarters, dayflower, corn sow thistle, field thistle, kitchen garden, piemarker, Siberian cocklebur can be prevented and kill off, expand herbicidal spectrum.This weed killer herbicide consumption is few, and weeding speed is fast, and 2-3 days can take effect, and improve the safety to corn simultaneously, decrease dosage, have saved cost accounting.
Technical scheme of the present invention is: a kind of cornfield weeding composition, it is characterized in that, containing A, B, C tri-kinds of active principles in the preparation of this Herbicidal combinations, three's weight ratio is (1 ~ 50): (1 ~ 50): (1 ~ 25); Wherein component A is sulfentrazone, and B component is atrazine, and component C is isoxadifen (or at least one in the salt of isoxadifen), and the total content of active ingredient is 1% ~ 80%.
The salt of described isoxadifen is at least one in isoxadifen sylvite, isoxadifen sodium salt, isoxadifen ammonium salt.
All the other components in invention formulation outside active principle are agricultural chemicals used additives and prepare preparation and need complementary component (referred to as filler), and consumption is: auxiliary agent 5 ~ 15%, filler 5 ~ 70%.
The pesticidal preparations formulation that Herbicidal combinations of the present invention can be mixed with is: wetting powder, suspending agent, dispersible oil-suspending agent, microemulsion, aqueous emulsion or water dispersible granules.
When above-described Herbicidal combinations is wetting powder, its component and weight portion thereof are: active principle A 1 ~ 50, active principle B 1 ~ 50, active principle C 1 ~ 25, dispersant 5 ~ 15, wetting agent 5 ~ 10 and filler 20 ~ 65.The concrete procedure of processing of wetting powder is: by above-mentioned formula by active principle A, B and C and the mixing of dispersant, wetting agent and filler, in premix stirred tank, uniform stirring mixes, through micro jet 800 order air-flow crushing, namely can be made into the wetting powder of Herbicidal combinations of the present invention.
When above-described Herbicidal combinations is suspending agent, its component and weight portion thereof are: active principle A 1 ~ 50, active principle B 1 ~ 50, active principle C 1 ~ 25, dispersant 4 ~ 18, antifreezing agent 1 ~ 3, thickener 1 ~ 5, defoamer 0.1 ~ 1, penetrating agent 1 ~ 10, pH value regulator 0.1 ~ 5, water supplies 100 parts.The concrete production stage of this suspending agent is: first mixed by other auxiliary agents, mix through high speed shear, add active principle A, B and C, ball milling 2 ~ 3 hours in ball crusher, make particle diameter all below 5 μm, the aqueous suspension formulations of obtained Herbicidal combinations of the present invention.
When above-described Herbicidal combinations is aqueous emulsion, its component and weight portion thereof are: active principle A 1 ~ 50, active principle B 1 ~ 50, active principle C 1 ~ 25, emulsifier 8 ~ 20, solvent 7 ~ 25, stabilizing agent 3 ~ 10, antifreezing agent 1 ~ 5, defoamer 0.1 ~ 3, thickener 1 ~ 5, water supplies 100 parts.The concrete production stage of this aqueous emulsion is: first active principle A, B, C and solvent, emulsifier, stabilizing agent are added together, and makes to be dissolved into uniform oil phase; Part water, antifreezing agent, defoamer are mixed uniformly aqueous phase; While high-speed stirred, oil phase is added aqueous phase in a kettle., add thickener, slowly add water until reach phase inversion point, open clipper and carry out high speed shear, and add remaining water, shear 20-40 minute, form the aqueous emulsion of oil-in-water type, i.e. the aqueous emulsion of obtained Herbicidal combinations of the present invention.
Above-described Herbicidal combinations is water dispersible granules, and its component and weight portion thereof are: active principle A 1 ~ 50, active principle B 1 ~ 50, active principle C 1 ~ 25, dispersant 5 ~ 20, wetting agent 7 ~ 15, disintegrant 2 ~ 5 and filler 10 ~ 70.The concrete procedure of processing of this water dispersible granules is: active principle A, B, C and dispersant, wetting agent, disintegrant and filler are mixed by above-mentioned formula, pulverize with micro jet, through mediating, then add after carrying out granulation, drying, screening in fluidized-bed granulation dryer, through sample analysis, i.e. the water dispersible granules of obtained Herbicidal combinations of the present invention.
When above-described Herbicidal combinations is for dispersibling oil-suspending agent, its component and weight portion thereof are: active principle A 1 ~ 50, active principle B 1 ~ 50, active principle C 1 ~ 25, emulsifier 5 ~ 15, dispersant 5 ~ 15, stabilizing agent 5 ~ 15, antifreezing agent 5 ~ 10, defoamer 1 ~ 5, thickener 1 ~ 5, vegetable oil supplies 100 parts.This concrete procedure of processing dispersibling oil-suspending agent is: each component stirred in premix still, then abrading-ball 2 ~ 3 hours in glass ball crusher, make dispersible granule diameter all at 2-4 μm, what obtain Herbicidal combinations of the present invention dispersibles oil-suspending agent preparation.
Above-described filler is any one in white carbon, kaolin, potter's clay, attapulgite, precipitated calcium carbonate, methyl oleate, esterification soybean oil, corn oil, white oil, can adsorb the active ingredient in weed killer herbicide well, reach slow release effect.
Above-described wetting agent is any one in sodium alkyl sulfate, sodium butylnaphthalenesulfonate, sodium alkyl benzene sulfonate, alkyl phenol polyethenoxy ether sodium sulfate, can improve the moistening dispersiveness of weed killer herbicide in water.
Above-described dispersant is any one in sodium lignin sulfonate, sodium polyphosphate, sodium methylene bis-naphthalene sulfonate, weed killer herbicide can be impelled to disperse in water, make weed killer herbicide have good stability.
Above-described thickener is any one in xanthan gum (XG), aluminium-magnesium silicate, carboxymethyl cellulose, carboxyethyl cellulose, PAA, polyvinyl alcohol (PVA), polyvinylpyrrolidone (PVP), Sodium Polyacrylate, polyvinyl acetate, disperse silicic acid, methylcellulose, gum Arabic, the viscosity of suspending agent can be regulated, thus the sedimentation that minimizing suspending agent produces in storage process, improve the suspension stability of suspending agent.
Above-described antifreezing agent is any one in ethylene glycol, propane diols, glycerine, glycerine-ether diglycol, methyl propylene diglycol, glycerine, urea, the freezing tolerance of suspending agent can be increased, improve the stability of suspending agent in low-temperature storage, transportation, prevent preparation crystallization and reunion.
Above-described disintegrant is any one in ammonium sulfate, bentonite, urea, aluminium chloride, glucose, can accelerate the disintegration rate of water dispersible granules in water, water dispersible granules is more rapid and better played a role.
Above-described stabilizing agent is any one in epoxychloropropane, Sodium Benzoate, organic acid, organic base, antioxidant, can prevent from or delay water dispersible granules to occur to decompose or physical property deterioration in storage process, keep and strengthen the stability of water dispersible granules, guarantee water dispersible granules before the deadline property indices meets the requirements.
Above-described emulsifier is selected from least one in calcium dodecyl benzene sulfonate and aliphatic acid polyethenoxy ether, alkylphenol polyoxyethylene sulfosuccinate, styrylphenol polyoxyethylene ether, polyoxyethylene nonylphenol ether, castor oil polyoxyethylene ether, aliphatic acid polyethenoxy base ester, polyoxyethylene aliphatic alcohol ether.
The above solvent is at least one in dimethylbenzene or biodiesel, toluene, diesel oil, methyl alcohol, ethanol, n-butanol, isopropyl alcohol, turpentine oil, solvent naphtha, dimethyl formamide, dimethyl sulfoxide (DMSO), water equal solvent.
Above-described defoamer is selected from: silicone oil, silicone compound, C
10-20saturated fat acid compounds, C
8-10at least one in aliphatic alcohols compound.
The above penetrating agent is one or both the mixture in Laurocapram, JFC.
The above pH value regulator is at least one in sodium hydroxide, potassium hydroxide, ammoniacal liquor, hydrochloric acid, acetic acid, phosphoric acid or citric acid.
The weight ratio of above-mentioned A, B, C tri-kinds of active ingredients is preferably (10 ~ 50): (10 ~ 50): (5 ~ 25), are more preferably (10 ~ 40): (20 ~ 40): (5 ~ 20).The total content of above-mentioned active ingredient is preferably 25% ~ 80%.
Above-described Herbicidal combinations preparation can effectively prevent and kill off annual gramineous weed and annual broadleaf weed, can be used safely in corn field, not only to crop safety, and to the same safety of environment.Can be widely used in weeds such as preventing and kill off green foxtail, lady's-grass, barnyard grass, Sorghum halepense, eleusine indica, moleplant seed, india lovegrass, annual bluegrass, piemarker, lamb's-quarters, summer cypress, knotweed, datura, leaf mustard, chickweed, dayflower, cyperus iria, the rhizome of nutgrass flatsedge, green amaranth, Pale persicaria, black nightshade, meadow pine, Veronica, Ji, field bindweed, kitchen garden, Amaranthus retroflexus, thorn amaranth, acalypha copperleaf, clearvers, sinapsis alba, white dead nettle, red heart lamb's-quarters, Siberian cocklebur, the weeds other classification weed killer herbicides such as intractable grass class, glyphosate tolerant grass class, anti-sulfonylurea grass class being produced to resistance still possess favorable effect.
The beneficial effect of Herbicidal combinations of the present invention is: the first, and Herbicidal combinations of the present invention has remarkable synergistic effect, expands herbicidal spectrum, improves the lasting effect of each composition single dose, enhances the stability under the external environment such as different temperatures, humidity; The second, obviously delay the generation of herbicide resistance, decreased agricultural chemicals Reusability number of times, reduce Pesticide use amount, reduce agricultural cost; 3rd, this Herbicidal combinations, to Crop securify, is easily degraded after the lasting period in the environment, and the residual quantity of medicine on field crops is low, is more beneficial to environmental protection, improves composition to the safety of second stubble crop, significant to ecosystem environment protection.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, the following specific embodiment of the present invention is described, but the present invention is only limitted to example absolutely not.The method that the present invention adopts indoor bioassay and field trial to combine.If no special instructions, the ratio (comprising percentage) below mentioned is all ratio of weight and number.
Embodiment 1: the wetting powder of Herbicidal combinations of the present invention is to the control efficiency of corn field weed
By sulfentrazone 20 parts, atrazine 30 parts, isoxadifen sylvite 10 parts, sodium lignin sulfonate (dispersant) 8 parts, sodium alkyl sulfate (wetting agent) 10 parts and kaolin (filler) 22 parts mixing, in premix stirred tank, uniform stirring mixes, through micro jet 800 order air-flow crushing, i.e. the wetting powder of obtained Herbicidal combinations of the present invention.The control efficiency of this wetting powder to corn field weed (test corn variety: Shandong single 6041, corn 3-5 leaf phases, weeds 2-4 leaf phase) is as shown in table 1.
The wetting powder of table 1 embodiment 1 is to the control efficiency of corn field weed
Embodiment 2: the suspending agent of Herbicidal combinations of the present invention is to the control efficiency of corn field weed
Sulfentrazone 10 parts, atrazine 20 parts, isoxadifen sylvite 5 parts, sodium lignin sulfonate (dispersant) 8 parts, ethylene glycol (antifreezing agent) 2 parts, xanthan gum (thickener) 2 parts, silicone oil (defoamer) 0.5 part, Laurocapram (penetrating agent) 1 part, 0.5 part, sodium hydroxide (pH value regulator), water (surplus).First other auxiliary agents are mixed, mix through high speed shear, add sulfentrazone, atrazine and isoxadifen sylvite, ball milling 2 ~ 3 hours in ball crusher, make dispersible granule diameter all below 5 μm, the aqueous suspension formulations of obtained Herbicidal combinations of the present invention.The control efficiency of this aqueous suspension formulations to corn field weed (test corn variety: Shandong single 6041, corn 3-5 leaf phases, weeds 2-4 leaf phase) is as shown in table 2.
The suspending agent of table 2 embodiment 2 is to the control efficiency of corn field weed
Embodiment 3: Herbicidal combinations of the present invention dispersible the control efficiency of oil-suspending agent to corn field weed
By sulfentrazone 15 parts, atrazine 25 parts, isoxadifen sylvite 7.5 parts, calcium dodecyl benzene sulfonate (emulsifier) 10 parts, aliphatic acid polyethenoxy ether (emulsifier) 5 parts, epoxychloropropane (stabilizing agent) 5 parts, sodium lignin sulfonate (dispersant) 8 parts, ethylene glycol (antifreezing agent) 2 parts, silicone oil (defoamer) 1.5 parts, xanthan gum (thickener) 2 parts, vegetable oil 19 parts.Abrading-ball 2 ~ 3 hours in glass ball crusher, makes dispersible granule diameter all at 2-4 μm, and what obtain Herbicidal combinations of the present invention dispersibles oil-suspending agent preparation.It is above-mentioned that to dispersible the control efficiency of oil-suspending agent to corn field weed (test corn variety: Shandong single 6041, corn 3-5 leaf phases, weeds 2-4 leaf phase) as shown in table 3.
Table 3 embodiment 3 dispersible the control efficiency of oil-suspending agent to corn field weed
Embodiment 4: Herbicidal combinations of the present invention dispersible the control efficiency of oil-suspending agent to corn field weed
By sulfentrazone 10 parts, atrazine 20 parts, isoxadifen sylvite 5 parts, calcium dodecyl benzene sulfonate (emulsifier) 10 parts, aliphatic acid polyethenoxy ether (emulsifier) 5.5 parts, epoxychloropropane (stabilizing agent) 5 parts, sodium lignin sulfonate (dispersant) 8 parts, ethylene glycol (antifreezing agent) 2 parts, silicone oil (defoamer) 1.5 parts, xanthan gum (thickener) 2 parts, vegetable oil 31 parts.Ball milling 2 ~ 3 hours in glass ball crusher, makes a diameter all at 2-4 μm, and what obtain Herbicidal combinations of the present invention dispersibles oil-suspending agent preparation.It is above-mentioned that to dispersible the control efficiency of oil-suspending agent to corn field weed (test corn variety: Shandong single 6041, corn 3-5 leaf phases, weeds 2-4 leaf phase) as shown in table 4.
Table 4 embodiment 4 dispersibles the control efficiency of oil-suspending agent to corn field weed
Embodiment 5: the aqueous emulsion of Herbicidal combinations of the present invention is to the control efficiency of corn field weed
By sulfentrazone 10 parts, atrazine 20 parts, isoxadifen sylvite 5 parts, calcium dodecyl benzene sulfonate (emulsifier) 10 parts, aliphatic acid polyethenoxy ether (emulsifier) 15 parts, n-butanol (solvent) 12 parts, epoxychloropropane (stabilizing agent) 5 parts, ethylene glycol (antifreezing agent) 3 parts, silicone oil (defoamer) 1 part, xanthan gum (thickener) 2 parts, 27 parts, water.Sulfentrazone, atrazine, isoxadifen sylvite and solvent, emulsifier, stabilizing agent will be had to be added together, to make to be dissolved into uniform oil phase; Part water, antifreezing agent, defoamer are mixed uniformly aqueous phase; While high-speed stirred, oil phase is added aqueous phase in a kettle., add thickener, slowly add water until reach phase inversion point, open clipper and carry out high speed shear, and add remaining water, shear about half an hour, form the aqueous emulsion of oil-in-water type.The i.e. aqueous emulsion of obtained Herbicidal combinations of the present invention.The control efficiency of this aqueous emulsion embodiment 5 pairs of corn field weeds (test corn variety: Shandong single 6041, corn 3-5 leaf phases, weeds 2-4 leaf phase) is as shown in table 5.
The aqueous emulsion of table 5 embodiment 5 is to the control efficiency of corn field weed
Embodiment 6: the water dispersible granules of Herbicidal combinations of the present invention is to the control efficiency of corn field weed
By sulfentrazone 20 parts, atrazine 40 parts, isoxadifen sylvite 10 parts, sodium lignin sulfonate (dispersant) 8 parts, sodium alkyl sulfate (wetting agent) 7 parts, bentonite (disintegrant) 2 parts, kaolin (filler) 13 parts.Above active principle is mixed at premix still, pulverizing with micro jet, through mediating, then adding after carrying out granulation, drying, screening in fluidized-bed granulation dryer, through sample analysis, i.e. the water dispersible granules of obtained Herbicidal combinations of the present invention.The control efficiency of above-mentioned water dispersible granules to corn field weed (test corn variety: Shandong single 6041, corn 3-5 leaf phases, weeds 2-4 leaf phase) is as shown in table 6.
The water dispersible granules of table 6 embodiment 6 is to the control efficiency of corn field weed
Embodiment 7: the water dispersible granules of Herbicidal combinations of the present invention is to the control efficiency of corn field weed
By sulfentrazone 30 parts, atrazine 30 parts, isoxadifen sylvite 15 parts, sodium lignin sulfonate (dispersant) 8 parts, sodium alkyl sulfate (wetting agent) 7 parts, bentonite (disintegrant) 2 parts, kaolin (filler) 8 parts.Above active principle is mixed at premix still, pulverizing with micro jet, through mediating, then adding after carrying out granulation, drying, screening in fluidized-bed granulation dryer, through sample analysis, i.e. the water dispersible granules of obtained Herbicidal combinations of the present invention.The control efficiency of water dispersible granules of the present invention to corn field weed (test corn variety: Shandong single 6041, corn 3-5 leaf phases, weeds 2-4 leaf phase) is as shown in table 7.
The water dispersible granules of table 7 embodiment 7 is to the control efficiency of corn field weed
Embodiment 8: the wetting powder of the Herbicidal combinations of the embodiment of the present invention 1 is on the impact of corn fresh weight and plant height
Test plant: sweet beautiful No. 3 of Shandong, 5-7 leaf phase corn.
Treatment agent: process 1 is compared with process 2, process 2 is containing isoxadifen sylvite, and process 1 does not contain.
Dosage: be preparation dosage 100 grams/acre, contrast: non-dispenser corn.
Fresh weight preventive effect computing formula: preventive effect (%)=(1-process fresh weight/contrast fresh weight) × 100.
Test method: corn seed 5 pieces (each process 4 repetition) is put into and adds sandy loam in advance, diameter be 10cm, highly for 8cm plastic flowerpot in, cover with soil, and be placed in phytotron, when corn grows to the 5-7 leaf phase, climatic chamber temperature is adjusted to 35 DEG C, and keeps certain humidity.Each process repetition 4 times, cauline leaf spraying process, measures plant height, fresh weight after 15 days.The safety testing result of wetting powder to corn plant height and fresh weight of the embodiment of the present invention 1 is as shown in table 8.
Table 8 tests corn variety to 15 of different disposal inhibiting rate days results
Find out by table 8, corn process is after 15 days, four of process 1 are repeated all not add isoxadifen sylvite, impact is had on corn plant height and fresh weight, plant height preventive effect (inhibiting rate) maximum 23.4%, fresh weight preventive effect is 22.69% to the maximum, shows that the indivedual plant of external symptom is short and small, the slight albefaction of blade.And add four repetitions of isoxadifen sylvite process 2, plant height preventive effect is at most 3.9%, and fresh weight preventive effect is the highest by 5.77%, has no the short and small or blade albefaction of plant.Visible isoxadifen sylvite significantly reduces herbicide damage, adds process 2 use safety on test corn variety of isoxadifen sylvite.
To sum up: can be learnt by above data, the cornfield weeding composition of sulfentrazone of the present invention, atrazine and isoxadifen (or one of isoxadifen salt) significantly improves each single dose component to the control efficiency of corn field weed, delay the generation of herbicide resistance, reduce Pesticide use amount, reduce agricultural cost, economical and efficient, weeding wide spectrum, and crop yield and quality can be improved.The isoxadifen added or the salt of isoxadifen, ensure that this Herbicidal combinations is to corn safety, also can be used for sweet corn.
Claims (10)
1. a cornfield weeding composition, is characterized in that, this Herbicidal combinations contains A, B, C tri-kinds of active principles, and three's weight ratio is (1 ~ 50): (1 ~ 50): (1 ~ 25); Wherein component A is sulfentrazone, and B component is atrazine, and component C is at least one in the salt of isoxadifen or isoxadifen, and the total content of active ingredient is 1% ~ 80%.
2. a kind of cornfield weeding composition as claimed in claim 1, is characterized in that, the salt of described isoxadifen is at least one in isoxadifen sylvite, isoxadifen sodium salt, isoxadifen ammonium salt.
3. a kind of cornfield weeding composition as claimed in claim 2, is characterized in that, the pesticidal preparations formulation of described Herbicidal combinations is: wetting powder, suspending agent, dispersible oil-suspending agent, microemulsion, aqueous emulsion or water dispersible granules.
4. a kind of cornfield weeding composition as claimed in claim 3, it is characterized in that, when described Herbicidal combinations is wetting powder, its component and weight portion thereof are: active principle A 1 ~ 50, active principle B 1 ~ 50, active principle C 1 ~ 25, dispersant 5 ~ 15, wetting agent 5 ~ 10 and filler 20 ~ 65.
5. a kind of cornfield weeding composition as claimed in claim 3, it is characterized in that, when described Herbicidal combinations is suspending agent, its component and weight portion thereof are: active principle A 1 ~ 50, active principle B 1 ~ 50, active principle C 1 ~ 25, dispersant 4 ~ 18, antifreezing agent 1 ~ 3, thickener 1 ~ 5, defoamer 0.1 ~ 1, penetrating agent 1 ~ 10, pH value regulator 0.1 ~ 5, water supplies 100 parts.
6. a kind of cornfield weeding composition as claimed in claim 3, it is characterized in that, when described Herbicidal combinations is aqueous emulsion, its component and weight portion thereof are: active principle A 1 ~ 50, active principle B 1 ~ 50, active principle C 1 ~ 25, emulsifier 8 ~ 20, solvent 7 ~ 25, stabilizing agent 3 ~ 10, antifreezing agent 1 ~ 5, defoamer 0.1 ~ 3, thickener 1 ~ 5, water supplies 100 parts.
7. a kind of cornfield weeding composition as claimed in claim 3, it is characterized in that, when described Herbicidal combinations is water dispersible granules, its component and weight portion thereof are: active principle A 1 ~ 50, active principle B 1 ~ 50, active principle C 1 ~ 25, dispersant 5 ~ 20, wetting agent 7 ~ 15, disintegrant 2 ~ 5 and filler 10 ~ 70.
8. a kind of cornfield weeding composition as claimed in claim 3, it is characterized in that, when described Herbicidal combinations is for dispersibling oil-suspending agent, its component and weight portion thereof are: active principle A 1 ~ 50, active principle B 1 ~ 50, active principle C 1 ~ 25, emulsifier 5 ~ 15, dispersant 5 ~ 15, stabilizing agent 5 ~ 15, antifreezing agent 5 ~ 10, defoamer 1 ~ 5, thickener 1 ~ 5, vegetable oil supplies 100 parts.
9. as a kind of cornfield weeding composition in claim 1-8 as described in any one, it is characterized in that, the weight ratio of described A, B, C tri-kinds of active ingredients is (10 ~ 50): (10 ~ 50): (5 ~ 25); The total content of described active ingredient is 25% ~ 80%.
10. a kind of cornfield weeding composition as claimed in claim 9, is characterized in that, the weight ratio of described A, B, C tri-kinds of active ingredients is (10 ~ 40): (20 ~ 40): (5 ~ 20).
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| CN201410593345.2A CN104365616B (en) | 2014-10-29 | 2014-10-29 | A kind of cornfield weeding composition |
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| CN104365616A true CN104365616A (en) | 2015-02-25 |
| CN104365616B CN104365616B (en) | 2015-11-18 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104855395A (en) * | 2015-05-24 | 2015-08-26 | 安徽丰乐农化有限责任公司 | Post-emergence herbicide composition containing topramezone, sulfentrazone and atrazine and used for corn |
| CN105901025A (en) * | 2016-05-11 | 2016-08-31 | 安徽省益农化工有限公司 | Compound preparation with functions of killing pests and weeding |
| CN106172392A (en) * | 2016-07-06 | 2016-12-07 | 山东省农业科学院玉米研究所 | A kind of cornfield weeding composition and preparation thereof |
| CN106259313A (en) * | 2016-08-03 | 2017-01-04 | 广东中迅农科股份有限公司 | A kind of oil-based suspension for weeding containing trace element and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000008935A1 (en) * | 1998-08-13 | 2000-02-24 | Aventis Cropscience Gmbh | Herbicidal agents for tolerant or resistant rice crops |
| WO2004045284A2 (en) * | 2002-11-21 | 2004-06-03 | Syngenta Participations Ag | Herbidical composition |
-
2014
- 2014-10-29 CN CN201410593345.2A patent/CN104365616B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000008935A1 (en) * | 1998-08-13 | 2000-02-24 | Aventis Cropscience Gmbh | Herbicidal agents for tolerant or resistant rice crops |
| WO2004045284A2 (en) * | 2002-11-21 | 2004-06-03 | Syngenta Participations Ag | Herbidical composition |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104855395A (en) * | 2015-05-24 | 2015-08-26 | 安徽丰乐农化有限责任公司 | Post-emergence herbicide composition containing topramezone, sulfentrazone and atrazine and used for corn |
| CN105901025A (en) * | 2016-05-11 | 2016-08-31 | 安徽省益农化工有限公司 | Compound preparation with functions of killing pests and weeding |
| CN106172392A (en) * | 2016-07-06 | 2016-12-07 | 山东省农业科学院玉米研究所 | A kind of cornfield weeding composition and preparation thereof |
| CN106259313A (en) * | 2016-08-03 | 2017-01-04 | 广东中迅农科股份有限公司 | A kind of oil-based suspension for weeding containing trace element and preparation method thereof |
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| CN104365616B (en) | 2015-11-18 |
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