CN117717084A - Post-emergence stem leaf herbicide - Google Patents
Post-emergence stem leaf herbicide Download PDFInfo
- Publication number
- CN117717084A CN117717084A CN202311716546.2A CN202311716546A CN117717084A CN 117717084 A CN117717084 A CN 117717084A CN 202311716546 A CN202311716546 A CN 202311716546A CN 117717084 A CN117717084 A CN 117717084A
- Authority
- CN
- China
- Prior art keywords
- herbicide
- sodium
- active composition
- flumetsulam
- isoproturon
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- 239000004009 herbicide Substances 0.000 title claims abstract description 78
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- 235000021307 Triticum Nutrition 0.000 description 1
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- UQMRAFJOBWOFNS-UHFFFAOYSA-N butyl 2-(2,4-dichlorophenoxy)acetate Chemical compound CCCCOC(=O)COC1=CC=C(Cl)C=C1Cl UQMRAFJOBWOFNS-UHFFFAOYSA-N 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 235000021466 carotenoid Nutrition 0.000 description 1
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- 150000001875 compounds Chemical class 0.000 description 1
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- NVVZQXQBYZPMLJ-UHFFFAOYSA-N formaldehyde;naphthalene-1-sulfonic acid Chemical compound O=C.C1=CC=C2C(S(=O)(=O)O)=CC=CC2=C1 NVVZQXQBYZPMLJ-UHFFFAOYSA-N 0.000 description 1
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- KPUREKXXPHOJQT-UHFFFAOYSA-N mesotrione Chemical compound [O-][N+](=O)C1=CC(S(=O)(=O)C)=CC=C1C(=O)C1C(=O)CCCC1=O KPUREKXXPHOJQT-UHFFFAOYSA-N 0.000 description 1
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- RTCOGUMHFFWOJV-UHFFFAOYSA-N nicosulfuron Chemical compound COC1=CC(OC)=NC(NC(=O)NS(=O)(=O)C=2C(=CC=CN=2)C(=O)N(C)C)=N1 RTCOGUMHFFWOJV-UHFFFAOYSA-N 0.000 description 1
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- 230000001018 virulence Effects 0.000 description 1
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Landscapes
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
The invention provides a post-emergence stem leaf herbicide, and belongs to the technical field of pesticide compositions. The post-emergence stem leaf herbicide provided by the invention comprises an active composition and auxiliary components, wherein the active composition consists of flumetsulam, isoproturon and isoxaflutole. The herbicide disclosed by the invention has the characteristics of high efficiency, safety, broad herbicide controlling spectrum and safety to corn and main aftercrop crops, and has stable pesticide effect under low temperature and drought conditions and certain soil sealing activity.
Description
Technical Field
The invention relates to the technical field of pesticide compositions, in particular to a post-emergence stem leaf herbicide.
Background
The weeds in the dry crop fields such as corn fields are various in variety, broadleaf weeds, grassy weeds and sedge weeds are mixed, and the weeds in the fields are controlled by adopting a herbicide compounding method in production, but the requirements of weed control cannot be met along with the improvement of the community change and the resistance/drug resistance of the corn fields caused by long-time use of the herbicide acetochlor, atrazine and 2,4-D butyl ester. In addition, the atrazine is used for a long time and in a large quantity, so that drug-resistant weeds frequently develop, and serious damage to water and other environments is generated. Therefore, there is an urgent need in production for a novel corn field herbicide formulation that is safe for corn itself and major aftercrop crops, yet has a better herbicidal effect under drought conditions.
Flumetsulam (Flumetsulam) has a molecular formula of C 12 H 9 F 2 N 5 O 2 S, chemical name 2',6' -difluoro-5-methyl (1, 2, 4) -triazolo (1, 5-a) pyrimidine-2-sulfonylanilides, known as strawberrite, is a typical acetolactate synthase (ALS) inhibitor, and inhibits protein synthesis by inhibiting synthesis of branched-chain amino acids. Is suitable for preventing and treating annual and perennial broadleaf weeds such as herba Xanthii, herba Solani Nigri, amaranthus retroflexus, fructus Chenopodii, and abutilon in corn, soybean, and wheat fields. Has certain inhibiting effect on young gramineous weeds.
Isoproturon (Isopruron) with a molecular formula of C 12 H 18 N 2 O, the chemical name is 3-p-isopropyl phenyl-1, 1-dimethylurea, is a substituted urea selective herbicide, and can inhibit a photosystem II (PS II) from absorbing short-wave red light by combining with D1 protein at the inner side of a thylakoid membrane in weed cells, so as to influence the photosynthesis of weeds, and cause oxidative damage of lipid, protein and other cell components to inhibit the synthesis of organic matters. The isoproturon has good sealing and killing effects on most gramineous weeds such as physalis alkekengi, hard grass, wild oat and the like, and also has good control effects on part of broadleaf weeds.
Isoxaflutole (Isoxafilotole) has a molecular formula of C 15 H 12 F 3 NO 4 S, the chemical name is 5-cyclopropyl-4- (2-methylsulfonyl-4-trifluoromethyl) benzoyl isoxazole, the isoxazolone belongs to a p-hydroxyphenylpyruvate cool double oxidase inhibitor (HPPD inhibitor), after sensitive weeds are absorbed, chlorophyll can be destroyed by inhibiting the p-hydroxyphenylpyruvate double oxidase, so that harmful weeds are prevented from withering in a green-losing way, and the purpose of selectively weeding is finally achieved. Clomazone is used for killing various annual broadleaf weeds such as abutilon, spanishneedles herb, amaranth, chenopodium quinoa, broom cypress, herba potentillae anserinae, purslane, black nightshade, chickweed, willow herb, acalypha australis, cocklebur, salpings and the like, and crabgrass, green bristlegrass, barnyard grass and stephania sinicaThe grass weeds such as the goosegrass have better control effect.
However, the single herbicide has a limited herbicidal spectrum because of various types of weeds in dry crop fields such as corn fields, and the like, and attempts have been made to provide a ternary mixed herbicide which expands the herbicidal spectrum of the herbicide, and improves safety, stability and herbicidal effect.
Disclosure of Invention
The invention aims to provide a post-emergence stem leaf herbicide which has the characteristics of high efficiency, safety, broad herbicide controlling spectrum and safety to corn and main aftercrop crops, has stable pesticide effect under low temperature and drought conditions and has certain soil sealing activity.
In order to achieve the above object, the present invention provides the following technical solutions:
the invention provides a post-emergence stem leaf herbicide which comprises an active composition and auxiliary components, wherein the active composition consists of flumetsulam, isoproturon and isoxaflutole.
Preferably, the mass ratio of the flumetsulam to the isoproturon to the isoxaflutole is (1-10): (10-100): (1-10).
Preferably, the mass ratio of the active composition to the auxiliary components is (1-60): (99-40).
Preferably, the auxiliary ingredient comprises one or more of any combination of dispersing agent, emulsifying agent, defoaming agent, wetting agent, stabilizing agent, thickening agent, suspending agent, antifreezing agent and solvent.
Preferably, the dispersant comprises one or more of sodium naphthalene sulfonate formaldehyde condensate, polycarboxylate, sodium polyphosphate, sodium methyl naphthalene sulfonate formaldehyde condensate, lignin sulfonate, alkylbenzenesulfonate, alkylphenol polyoxyethylene ether formaldehyde condensate sulfate, high molecular carboxylate, ethylenediamine polyoxyethylene polyoxypropylene ether, alkylphenol polyoxyethylene ether, ethylene oxide/propylene oxide block polyether and organic phosphate;
the emulsifier comprises one or more of alkylphenol ethoxylates, styrylphenol ethoxylates, alkylphenol ethoxylate formaldehyde condensate, sodium methyl cocoyl taurate, alkylphenol ether sulfosuccinate sodium salt, castor oil polyoxyethylene ether, fatty alcohol polyoxyethylene ester, polyol fatty acid ester and ethylene oxide adduct thereof, alkylbenzene sulfonate and fatty alcohol polyoxyethylene ether sulfate;
the defoamer comprises one or more of mineral oil, vegetable oil, alcohol, polyether, fatty acid amide, fatty acid ester, silicon dioxide and organic silicon;
the wetting agent comprises one or more of alkylphenol ethoxylates, fatty alcohol ethoxylates, fatty acids, fatty acid ester sulfate, sodium alkyl naphthalene sulfonate, alkylbenzene sulfonate, alkyl sulfate, tea saponin and lignin salt;
the stabilizer comprises one or more of potassium sorbate, modified acrylic acid polymer, stearoyl benzoyl methane, sodium benzoate, formaldehyde, 1, 2-benzisothiazolin-3-one, kathon, epichlorohydrin, epoxidized vegetable oil, tributyl phosphate, alkylphenol polyoxyethylene phosphate and salts thereof, 2-methyl-2, 4-pentanediol and 1, 5-pentanediol;
the thickener comprises one or more of hydroxymethyl cellulose, polyvinyl acetate, xanthan gum, sodium alginate, acacia, bentonite, white carbon black, magnesium aluminum silicate and starch;
the suspending agent comprises one or more of silicon dioxide, sodium alginate, sodium methylcellulose and chitosan quaternary ammonium salt;
the antifreezing agent comprises one or more of ethylene glycol, propylene glycol, glycerol and polyethylene glycol;
the solvent comprises one or more of deionized water, methyl oleate, methanol, N-dimethylformamide and xylene.
Preferably, the herbicide is water suspending agent, aqueous emulsion, wettable powder, dispersible oil suspending agent, microemulsion, microcapsule powder, microcapsule suspending agent, granule, water dispersible granule or ultra-low volume spray.
Preferably, when the dosage form of the herbicide is an aqueous suspension, the active composition comprises 24-38% by weight of the herbicide; when the dosage form of the herbicide is water dispersible granules, the active composition accounts for 38-52% of the weight of the herbicide; when the dosage form of the herbicide is wettable powder, the active composition accounts for 36-52% of the weight of the herbicide.
Preferably, the weeds are grassy weeds and/or broadleaf weeds in corn fields.
Preferably, the weeds comprise at least one of barnyard grass, pond, green bristlegrass, wild millet, amaranth, quinoa, abutilon, cocklebur, red knotweed, dayflower, purslane, endive, thorn and acalypha australis.
Preferably, the herbicide also has soil blocking activity.
According to the invention, isoproturon, flumetsulam and isoxaflutole are subjected to ternary mixing, the optimal mixing proportion is obtained through combined action evaluation, and the stem and leaf treatment activity and secondary sealing effect of the composition on corn field weeds and the safety of corn are verified through field pesticide effect tests, soil sealing effects, greenhouse potting tests, greenhouse safety evaluation on different varieties of corn, field pesticide effect tests and the like.
Compared with the prior art, the herbicide provided by the invention has the beneficial effects that:
(1) The post-emergence stem leaf herbicide provided by the invention expands the weed control spectrum of flumetsulam, isoproturon and isoxaflutole: the flumetsulam belongs to acetolactate synthase (ALS) inhibitor herbicides, and stem and leaf treatment is mainly absorbed by root systems of weeds, so that broadleaf weeds such as cocklebur, amaranth, quinoa, abutilon, dayflower and the like can be prevented and treated, and the prevention effect on weeds such as black nightshade, acalypha australis and thorn is poor; the clomazone can prevent and treat grassy weeds and broadleaf weeds such as abutilon, cocklebur, quinoa, broom cypress, chickweed, black nightshade, acalypha australis, polygonum salicifolium, amaranthus retroflexus, purslane, acalypha australis and the like, but has poor prevention effect on weeds such as cockspur grass, wild millet, cocklebur, dayflower and the like; isoproturon can not only prevent and treat grassy weeds such as barnyard grass, green bristlegrass, crabgrass, etc., but also prevent and treat annual broadleaf weeds such as amaranthus retroflexus, etc., and the three can enlarge the weed killing spectrum by compounding, thereby realizing the purposes of one-time medication and double removal of gramineous broadleaf weeds.
(2) The post-emergence stem and leaf herbicide provided by the invention has the advantages that the flumetsulam and the isoproturon are compounded, and the flumetsulam is compounded to increase the efficiency: the flumetsulam inhibits synthesis of branched-chain amino acids by inhibiting acetolactate synthase (ALS), thereby affecting protein synthesis, stopping weed growth, and ultimately leading to death; and isoproturon can block a photosystem II (PS II) from absorbing short-wave red light by combining with D1 protein at the inner side of a thylakoid membrane in weed cells, so that the photosynthesis of weeds is influenced, oxidation damage of lipid, protein and other cell components is caused, synthesis of organic matters is blocked, and finally, the weeds starve and wither to death; clomazone affects carotenoid and chlorophyll synthesis by inhibiting p-hydroxyphenylpyruvate dioxygenase (HPPD), resulting in hindered photosynthesis, leading to death of sensitive weeds. The three have different action mechanisms, and the compound has a certain synergistic effect, can effectively reduce the dosage of single medicament, improve the control effect, avoid succession of weed communities and delay the development of drug resistance, and has obvious control effect on main weeds in dry farmlands such as barnyard grass, green bristlegrass, dayflower, amaranth, quinoa and the like.
(3) According to the invention, the flumetsulam, the isoproturon and the clomazone are mixed for post-emergence stem and leaf treatment, so that not only can the stem and leaf treatment activity be exerted, but also the soil sealing treatment activity can be exerted, the purpose of one-time application and double sealing and killing effects is realized, the window period of weed prevention and control can be effectively prolonged, and the weed prevention and control efficiency is improved.
(4) The post-emergence stem leaf herbicide provided by the invention has the advantages of high efficiency, safety, broad herbicide controlling spectrum, safety to main aftercrop crops and the like. On the premise of the same effective amount, the herbicide has obviously higher control effect on weeds than the single herbicide and the mixed use of the two herbicides in the prior art.
Detailed Description
The technical solutions provided by the present invention are described in detail below with reference to examples, but they should not be construed as limiting the scope of the present invention.
Example 1
The post-emergence stem leaf herbicide comprises an active composition and auxiliary components, wherein the mass ratio of the active composition is 24%, and the mass ratio of the flumetsulam to the isoproturon to the isoxaflutole is 2:20:2. the herbicide is prepared by the following steps: 663g of deionized water, 35g of phosphate dispersant PEK, 15g of dispersant OX-4070, 30g of glycol, 2g of xanthan gum, 10g of magnesium aluminum silicate, 20g of flumetsulam, 200g of isoproturon and 20g of isoxaflutole are added into a shearing tank and uniformly mixed for 30min, then the materials are ground in a ball mill, the temperature of the ball mill is controlled to be lower than 40 ℃, and after discharging, the materials are sieved by a 325-mesh sieve, thus obtaining the 24% postemergence stem leaf herbicide in the form of a dispersible aqueous suspension of flumetsulam isoproturon isoxaflutole (2:20:2).
Example 2
The post-emergence stem leaf herbicide comprises an active composition and auxiliary components, wherein the mass ratio of the active composition is 38%, and the mass ratio of flumetsulam to isoproturon to isoxaflutole to the three is 4:30: 4. the herbicide is prepared by the following steps: 528g deionized water, 35g phosphate dispersant PEK, 15g alkylphenol polyoxyethylene ether formaldehyde condensate sulfate SOPA, 30g glycol, 2g xanthan gum, 10g magnesium aluminum silicate, 40g flumetsulam, 300g isoproturon and 40g isoxaflutole are added into a shearing tank and uniformly mixed for 30min, then the materials are ground in a ball mill, the temperature of the ball mill is controlled to be lower than 40 ℃, the materials are discharged and then pass through a 325-mesh sieve, and the post-emergence stem leaf herbicide in the form of 38% flumetsulam isoproturon isoxaflutole (4:30:4) dispersible aqueous suspension is obtained.
Example 3
The post-emergence stem leaf herbicide comprises an active composition and auxiliary components, wherein the mass ratio of the active composition is 38%, and the mass ratio of the flumetsulam to the isoproturon to the isoxaflutole is 4:30:4, the herbicide is prepared according to the following method: uniformly mixing 40g of flumetsulam, 300g of isoproturon, 40g of isoxaflutole, 40g of lignosulfonate, 40g of tea saponin, 40g of naphthalene sulfonate formaldehyde condensate NNO and 500g of kaolin, and carrying out jet milling; and (3) transferring the obtained wettable powder into an extrusion granulator, and drying and screening the obtained granules to obtain the 38% flumetsulam isoproturon isoxaflutole (4:30:4) water dispersible granule type post-emergence stem leaf herbicide.
Example 4
The post-emergence stem leaf herbicide comprises an active composition and auxiliary components, wherein the mass ratio of the active composition is 52%, and the mass ratio of the flumetsulam to the isoproturon to the isoxaflutole is 8:40:4, the herbicide is prepared according to the following method: uniformly mixing 80g of flumetsulam, 400g of isoproturon, 40g of isoxaflutole, 40g of lignosulfonate, 40g of tea saponin, 40g of sodium dodecyl sulfate and 360g of kaolin, and carrying out jet milling; and (3) transferring the obtained wettable powder into an extrusion granulator, and drying and screening the obtained granules to obtain the 52% flumetsulam isoproturon isoxaflutole (8:40:4) water dispersible granule type post-emergence stem leaf herbicide.
Example 5
The post-emergence stem leaf herbicide comprises an active composition and auxiliary components, wherein the mass ratio of the active composition is 38%, and the mass ratio of the flumetsulam to the isoproturon to the isoxaflutole is 4:30:4, the herbicide is prepared according to the following method: uniformly mixing 40g of flumetsulam, 300g of isoproturon, 40g of isoxaflutole, 3g of silicon dioxide, 3g of methyl cellulose sodium, 3g of chitosan ammonium salt, 60g of alkyl naphthalene sulfonate, 50g of lignosulfonate, 10g of organosiloxane and 491g of kaolin, performing jet-milling, and drying and screening the obtained particles to obtain the 38% flumetsulam isoproturon isoxaflutole (4:30:4) wettable powder type post-emergence stem leaf herbicide.
Example 6
The post-emergence stem leaf herbicide comprises an active composition and auxiliary components, wherein the mass ratio of the active composition is 52%, and the mass ratio of the flumetsulam to the isoproturon to the isoxaflutole is 8:40:4, the herbicide is prepared according to the following method: 80g of flumetsulam, 400g of isoproturon, 40g of isoxaflutole, 3g of silicon dioxide, 3g of methyl cellulose sodium, 3g of chitosan ammonium salt, 55g of tea saponin, 55g of lignin sulfonate, 10g of organosiloxane and 351g of kaolin are uniformly mixed and then subjected to jet milling, and the obtained particles are dried and screened to obtain the 52% flumetsulam isoproturon isoxaflutole (8:40:4) wettable powder type post-emergence stem leaf herbicide.
Experimental example 1
Potted plant virulence assay
Test agent:
98% isoproturon, shandong Qianli macrobiotechnology Co., ltd
97.3% flumetsulam, jiangsu Nibang Agrochemical Co., ltd
97.9% isoxaflutole, hubei Kang Baotai Fine chemical Co
Test target: barnyard grass Echinochloa crusgalli (l.) beauv., crabgrass Digitaria sanguinalis (l.) scop., amaranthus retroflex l., abutilon a. Thesophrasti medicinal.
The dosage design of the medicament is as follows:
the single dose of the flumetsulam is 5, 10 and 20g a.i./hm 2 ；
Isopropyl Long Shanji dose was 25, 50, 100g a.i./hm 2 ；
The dosage of the single dose of the isoxaflutole is 10, 20 and 40g of a.i./hm 2 ；
The proportions and the amounts of the flumetsulam, the isoproturon and the isoxaflutole are shown in table 1.
The test method comprises the following steps: mixing farmland soil without herbicide with matrix soil according to a ratio of 1:1, filling the mixture into a pot with a diameter of 15cm, then using bottom infiltrating irrigation to saturate soil moisture, when the grass weeds (barnyard grass and crabgrass) to be tested grow to 3-5 leaf stage, when the main broadleaf weeds (amaranthus retroflexus and abutilon) grow to 2-4 leaf stage, keeping 10 plants with consistent growth vigor in each pot, then spraying the chemical according to the table 1, repeating each group of treatment for 4 times, using clear water as a control, normal management after the treatment, weighing fresh weight of overground parts of each treated weed, calculating the inhibition percentage of growth of overground parts and the percentage of residual weeds as the control, and evaluating the combined action type of the mixed use of the three on weed control by using a Colby method. The actual measurement value of the fresh weight control effect of each treated weed is E, and the theoretical value (E0) is obtained according to the following formula: e0 =1-a×b×c/10000
Wherein A, B, C is the percentage of fresh weight of each single dose of treated weed to control.
According to the Colby method, the synergistic effect is achieved when E-E0 is more than 10%, the additive effect is achieved when E-E0 is more than or equal to-10%, and the antagonistic effect is achieved when E-E0 is less than or equal to-10%. The results are shown in Table 1.
Table 1 determination of the type of combined action of flumetsulam, isoproturon, and isoxaflutole in combination
As can be seen from Table 1, the difference between the actual fresh weight control effect of barnyard grass and the theoretical fresh weight control effect after the mixed use of flumetsulam, isoproturon and isoxaflutole is-9.6 to-1.0, the difference between crabgrass and abutilon is-8.8 to 0.0, the difference between abutilon is-8.9 to-3.7, the difference between amaranth and amaranth is 1.4 to 9.6, and the combination effect type of barnyard grass, crabgrass, abutilon and amaranth is additive.
Experimental example 2
Field efficacy test
Test crop: corn
The administration period is as follows: post-emergence stem and leaf treatment
And (3) medicament treatment:
example 1: post-emergence stem leaf herbicide in the form of 24% flumetsulam isoproturon isoxaflutole aqueous suspension, 133g/667m 2 ；
Example 2: post-emergence stem leaf herbicide in the form of 38% flumetsulam isoproturon isoxaflutole aqueous suspension, 80g/667m 2 ；
Example 3: post-emergence stem leaf herbicide in the form of 38% flumetsulam isoproturon isoxaflutole water dispersible granule, 80g/667m 2 ；
Example 4: post-emergence stem leaf herbicide in the form of 52% flumetsulam isoproturon isoxaflutole water dispersible granule 60g/667m 2 ；
Example 5: post-emergence stem leaf herbicide in the form of 38% flumetsulam isoproturon isoxaflutole wettable powder, 80g/667m 2 ；
Example 6:52% post-emergence stem leaf herbicide in the form of flumetsulam isoproturon isoxaflutole wettable powder, 60g/667m 2 ；
Control drug settings:
control 1:80% flumetsulam WG,5g/667m 2
Control 2:70% isoproturon WP,115g/667m 2
Control 3:20% isoxaflutole SC,30g/667m 2
Control 4:80% flumetsulam WG,2.7g/667m 2 +70% isoproturon WP,57.5g/667m 2
Control 5:80% flumetsulam WG,2.7g/667m 2 +20% isoxaflutole SC,15g/667m 2
Control 6:70% isoproturon WP,57.5g/667m 2 +20% isoxaflutole SC,15g/667m 2 Control 7:33% nicosulfuron mesotrione atrazine dispersible oil suspending agent, 111.1g/667m 2
Selecting land blocks with serious weed occurrence and even distribution in the last year, wherein each 20m 2 The method is characterized in that the method is used as a cell, protective rows are arranged between the cells, and after corn seedlings, spraying treatment is carried out on grassy weeds in 3-5 leaf stages and broadleaf weeds in 2-4 leaf stages, and each group of treatment is repeated for 4 times.
And after 30d of treatment, counting the number of weeds in the treatment area and the control area, and calculating the plant control effect and fresh weight control effect.
The plant prevention effect calculation formula:
plant% = (1-number of weed plants in treatment area/number of weed plants in control area).%) 100%
Fresh weight% control = (1-fresh weed weight in treatment zone/fresh weed weight in control zone) ×100%
The control effect of the weeds in the above examples 1 to 6 is shown in Table 2.
Table 2 Each example shows control of 30d fresh weight of annual weeds in corn fields
From Table 2, the weeding mixture of flumetsulam, isoproturon and isoxaflutole has the total fresh weight control effect on annual weeds in corn fields over 96 percent, is obviously higher than the control effect of single use of each medicament and the mixed use of the two medicaments, and has good control effect on the weeds in the corn fields.
Experimental example 3
Soil blocking Activity test
The soil blocking activity of post-emergence foliar herbicides in the form of 24% isoproturon-isoxafluticasone suspension (example 1) was evaluated by a greenhouse pot test with barnyard grass, crabgrass, abutilon and amaranth as test weeds. The results are shown in Table 3.
Table 3 evaluation of the blocking effect of isoproturon-isoxazolone-flumetsulam suspension on weed soil
Note that: ++ + + and representation inhibition the rate is more than 90 percent; ++ indicates that the inhibition rate is 80% -90%; ++ represents that the inhibition rate is 70% -79%; + represents that the inhibition rate is 30% -69%; -representing an inhibition of < 30%.
Fresh weight inhibition = (1-treated weed fresh weight/control weed fresh weight) ×100% of the total weight of the plant
The result shows that when the tested medicament 24% isoproturon, isoxazolone and zolmitrazine suspending agent is used as the post-emergence stem leaf herbicide, the effective component is 133g/667m 2 Under the application dosage, the fresh weight inhibition rate of the piemarker, the amaranthus retroflexus, the barnyard grass and the crabgrass reaches more than 90 percent.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.
Claims (10)
1. The post-emergence stem leaf herbicide is characterized by comprising an active composition and auxiliary components, wherein the active composition consists of flumetsulam, isoproturon and isoxaflutole.
2. The herbicide according to claim 1, characterized in that the mass ratio of flumetsulam, isoproturon and isoxaflutole is (1-10): (10-100): (1-10).
3. The herbicide according to claim 2, characterized in that the mass ratio of the active composition and the auxiliary ingredient is (1-60): (99-40).
4. A herbicide as claimed in claim 3, characterised in that the auxiliary ingredients comprise one or more of any combination of dispersants, emulsifiers, defoamers, wetting agents, stabilizers, thickeners, suspending agents, antifreeze agents and solvents.
5. The herbicide of claim 4, wherein the dispersant comprises one or more combinations of sodium naphthalene sulfonate formaldehyde condensate, polycarboxylate, sodium polyphosphate, sodium methyl naphthalene sulfonate formaldehyde condensate, lignosulfonate, alkylbenzenesulfonate, alkylphenol polyoxyethylene ether formaldehyde condensate sulfate, polymeric carboxylate, ethylenediamine polyoxyethylene polyoxypropylene ether, alkylphenol polyoxyethylene ether, ethylene oxide/propylene oxide block polyether, and organic phosphate;
the emulsifier comprises one or more of alkylphenol ethoxylates, styrylphenol ethoxylates, alkylphenol ethoxylate formaldehyde condensate, sodium methyl cocoyl taurate, alkylphenol ether sulfosuccinate sodium salt, castor oil polyoxyethylene ether, fatty alcohol polyoxyethylene ester, polyol fatty acid ester and ethylene oxide adduct thereof, alkylbenzene sulfonate and fatty alcohol polyoxyethylene ether sulfate;
the defoamer comprises one or more of mineral oil, vegetable oil, alcohol, polyether, fatty acid amide, fatty acid ester, silicon dioxide and organic silicon;
the wetting agent comprises one or more of alkylphenol ethoxylates, fatty alcohol ethoxylates, fatty acids, fatty acid ester sulfate, sodium alkyl naphthalene sulfonate, alkylbenzene sulfonate, alkyl sulfate, tea saponin and lignin salt;
the stabilizer comprises one or more of potassium sorbate, modified acrylic acid polymer, stearoyl benzoyl methane, sodium benzoate, formaldehyde, 1, 2-benzisothiazolin-3-one, kathon, epichlorohydrin, epoxidized vegetable oil, tributyl phosphate, alkylphenol polyoxyethylene phosphate and salts thereof, 2-methyl-2, 4-pentanediol and 1, 5-pentanediol;
the thickener comprises one or more of hydroxymethyl cellulose, polyvinyl acetate, xanthan gum, sodium alginate, acacia, bentonite, white carbon black, magnesium aluminum silicate and starch;
the suspending agent comprises one or more of silicon dioxide, sodium alginate, sodium methylcellulose and chitosan quaternary ammonium salt;
the antifreezing agent comprises one or more of ethylene glycol, propylene glycol, glycerol and polyethylene glycol;
the solvent comprises one or more of deionized water, methyl oleate, methanol, N-dimethylformamide and xylene.
6. The herbicide of claim 5, wherein the herbicide is an aqueous suspension, an aqueous emulsion, a wettable powder, a dispersible oil suspension, a microemulsion, a microcapsule powder, a microcapsule suspension, a granule, a water dispersible granule or an ultra-low volume spray.
7. The herbicide of claim 6, wherein when the herbicide is in the form of an aqueous suspension, the active composition comprises 24-38% by weight of the herbicide; when the dosage form of the herbicide is water dispersible granules, the active composition accounts for 38-52% of the weight of the herbicide; when the dosage form of the herbicide is wettable powder, the active composition accounts for 36-52% of the weight of the herbicide.
8. The herbicide of claim 7, wherein the weeds are grasses and/or broadleaf weeds in corn fields.
9. The herbicide of claim 8, wherein the weeds comprise at least one of barnyard grass, pond, green bristlegrass, wild millet, amaranth, quinoa, abutilon, cocklebur, red knotweed, dayflower, purslane, endive, spiny grass, and acalypha australis.
10. The herbicide according to any one of claims 1 to 9, characterized in that it also has soil blocking activity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311716546.2A CN117717084A (en) | 2023-12-13 | 2023-12-13 | Post-emergence stem leaf herbicide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311716546.2A CN117717084A (en) | 2023-12-13 | 2023-12-13 | Post-emergence stem leaf herbicide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117717084A true CN117717084A (en) | 2024-03-19 |
Family
ID=90208195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311716546.2A Pending CN117717084A (en) | 2023-12-13 | 2023-12-13 | Post-emergence stem leaf herbicide |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117717084A (en) |
-
2023
- 2023-12-13 CN CN202311716546.2A patent/CN117717084A/en active Pending
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