CN117546853A - Ternary weeding composition containing isooctyl dimethyl tetrachloride and application thereof - Google Patents
Ternary weeding composition containing isooctyl dimethyl tetrachloride and application thereof Download PDFInfo
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- CN117546853A CN117546853A CN202311272201.2A CN202311272201A CN117546853A CN 117546853 A CN117546853 A CN 117546853A CN 202311272201 A CN202311272201 A CN 202311272201A CN 117546853 A CN117546853 A CN 117546853A
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- weeds
- isooctyl
- quinclorac
- terbuthylazine
- herbicidal composition
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- -1 isooctyl Chemical group 0.000 title claims abstract description 28
- 238000009333 weeding Methods 0.000 title claims abstract description 15
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 title description 8
- KPZGRMZPZLOPBS-UHFFFAOYSA-N 1,3-dichloro-2,2-bis(chloromethyl)propane Chemical compound ClCC(CCl)(CCl)CCl KPZGRMZPZLOPBS-UHFFFAOYSA-N 0.000 title description 3
- 241000196324 Embryophyta Species 0.000 claims abstract description 62
- FFSSWMQPCJRCRV-UHFFFAOYSA-N quinclorac Chemical compound ClC1=CN=C2C(C(=O)O)=C(Cl)C=CC2=C1 FFSSWMQPCJRCRV-UHFFFAOYSA-N 0.000 claims abstract description 26
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- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
The invention provides a weeding composition containing isooctyl methochloride, quinclorac and terbuthylazine, which comprises the following active ingredients in parts by mass: the mass ratio of the isooctyl dichloride, the quinclorac and the terbuthylazine is 1-30:1-30:1-40; the weeding composition can be used for preventing and killing gramineous weeds, broadleaf weeds and sedge weeds, and can be prepared into suspoemulsion, dispersible oil suspending agent, wettable powder and water dispersible granule; the composition has obvious synergistic effect, can effectively reduce the dosage of active ingredients, is safe to crops in field observation, and has excellent control effect on most field weeds.
Description
Technical Field
The invention relates to the field of pesticides, in particular to a weeding composition containing isooctyl dimethyl tetrachloride, quinclorac and terbuthylazine and application thereof.
Background
The sorghum has the characteristics of drought resistance, waterlogging resistance, salt and alkali resistance, barren resistance, high photosynthetic efficiency, high biological yield, strong adaptability and the like, is an ideal green high-quality forage crop for developing the breeding industry, and is an indispensable raw material crop for the brewing industry and the feed processing industry. The plant is used as marginal and pioneer crops in dry farmland of China, and has the purposes of feeding, brewing, fiber and the like. Sorghum belongs to the category of small minor cereals, and is sensitive to herbicides, so that the registered herbicides special for sorghum fields are few. At present, sorghum field weeds are aggravated year by year and communities are also changed, so that chemical weeding needs of large-scale sorghum production are met, and indoor screening tests and field control tests of sorghum field weed chemical control agents are carried out.
The dimethyl isooctyl chloride is a selective activator phenoxy carboxylic acid herbicide and has stronger systemic conductivity. The plant-growth-promoting agent is mainly used for post-emergence stem and leaf treatment, passes through horny layer and cell membrane, and finally is conducted to each part, and can be used for preventing and controlling broadleaf weeds and sedge weeds on various crops.
Quinclorac quinolinecarboxylic acid herbicide is a synthetic hormone inhibitor. The preparation can be rapidly absorbed by germinated seeds, roots, stems and leaves, and rapidly transmitted to the stems and the top ends, so that weeds are poisoned and die, and the action symptoms of the preparation are similar to those of auxins. Is safe for rice growth. The persistent period is about 25 days, and weeds such as barnyard grass can be effectively prevented and treated.
The broad-spectrum systemic triazine herbicide of the specification Ding Jinshu is mainly used for preventing and killing annual weeds in spring corn fields, and comprises grassy weeds mainly comprising crabgrass, goosefoot, barnyard grass, green bristlegrass and the like, broadleaf weeds mainly comprising amaranth, chenopodium album and the like and cyperaceae weeds mainly comprising nutgrass flatsedge.
No report exists in the prior art on the compound weeding composition of the isooctyl methochloride, the quinclorac and the terbuthylazine.
Disclosure of Invention
The invention aims to provide a weeding composition containing isooctyl methochloride, quinclorac and terbuthylazine. The specific scheme is as follows:
the weeding composition containing isooctyl dichloride, quinclorac and terbuthylazine is characterized by comprising the following active ingredients in parts by mass: the mass ratio of the isooctyl dichloride, the quinclorac and the terbuthylazine is 1-30:1-30:1-40.
Preferably, the mass ratio of the isooctyl dichloride, the quinclorac and the terbuthylazine is 5-15:5-15:10-30.
Particularly preferably, the mass ratio of the isooctyl dimethyltetrachloride, the quinclorac and the terbuthylazine is 10:10:20.
The weeding composition contains 1-85% of active ingredients and auxiliary ingredients which can be used in pesticides. The preferred percentage of active ingredient is 5-65%
The auxiliary agent comprises one or more than two of dispersing agent, wetting agent, emulsifying agent, thickening agent, binding agent, disintegrating agent, preservative, cosolvent, antifreezing agent, filler and solvent.
The dosage form of the weeding composition can be dispersible oil suspending agent, wettable powder, water dispersible granule and suspending emulsion. Suspoemulsions, dispersible oil suspensions are preferred.
The weeding composition is used for preventing and controlling weeds in a crop field. Preferably, the crop is sorghum; the weeds are grassy weeds, broadleaf weeds and sedge weeds. In particular, the weeds are barnyard grass, green bristlegrass, crabgrass, quinoa, amaranthus retroflexus or wild rape.
Beneficial technical effects
The weeding composition prepared by the invention can be used for preventing and killing grassy weeds, broadleaf weeds and sedge weeds, has obvious synergistic effect, can effectively reduce the dosage of active ingredients, and is safe to crops in field observation.
Drawings
Fig. 1: is a preparation process diagram of formulation 1 of the ternary herbicidal composition of example 3.
Detailed Description
Example 1: indoor bioassay of ternary herbicidal composition on sorghum field weeds and quinoa
Test agent: an isooctyl dichloride crude drug, a quinclorac crude drug and a terbuthylazine crude drug.
Test target: selecting a sorghum annual weed representative quinoa as a test object, and taking a plurality of mature and full seeds in the last year for standby.
Culture conditions: the test was carried out in a climatic chamber. Selecting a plurality of plastic pots with the diameter of 30cm, adding a proper amount of moist sterilized loam, completely wetting the soil by adopting a pot bottom infiltrating irrigation mode, uniformly broadcasting the pretreated tested weed seeds on the soil surface, covering a proper amount of sieving fine soil, preferably covering the weed seeds right time, transferring the plastic pots into a greenhouse for conventional culture after sowing, and supplementing water by adopting the pot bottom infiltrating irrigation mode. And (5) thinning the seedlings in the 4-5 leaf period of the quinoa, and reserving 20 plants in each pot.
And (3) medicament treatment: accurately weighing a certain amount of test agent, adding a small amount of emulsifier Tween 80 and N, N-dimethylformamide, dissolving, preparing 1% mother liquor with 0.1% Tween 80 aqueous solution, diluting the medicinal liquid with 0.1% Tween 80 aqueous solution, and setting 6 doses per agent by multiple dilution method. 2d after the weeds are thinned, carrying out stem and leaf spraying treatment according to the designed dosage, using an automatic control spraying tower for a spraying device, correcting the spraying amount before the test, carrying out stem and leaf spraying treatment according to the test design from low dosage to high dosage, and simultaneously using the aqueous solution treatment of 0.1% Tween 80 containing the same amount of organic solvent as a blank control. Each treatment was repeated 4 times.
Investigation and statistics: after the treatment, the growth state of the weeds to be tested was regularly observed and recorded, and after 21 days of the treatment, the weeds at the upper parts of the ground were harvested and the fresh weight thereof was called. Calculating fresh weight control effect. Fresh weight control= (average fresh weight of weeds in blank control area-average fresh weight of weeds in treated area)/average fresh weight of weeds in blank control area x 100%.
Regression analysis is carried out on the reagent dose logarithmic value (x) and the probability value (y) of weed control effect, a regression equation (y=a+bx) is established, and a correlation coefficient (r), an effective dose (GR 50) for inhibiting the fresh weight of weeds by 50%, a confidence interval and the like are calculated.
And calculating the combined action type of the compound according to the following formula by using a co-toxicity coefficient method. Toxicity index = GR50 of standard agent/GR 50 x 100 of test agent; co-toxicity coefficient of the blend = actual toxicity index of the blend/theoretical toxicity index of the blend x 100. Toxicity index theoretical value of the mixture = toxicity index of a x proportion of a in the mixture + toxicity index of B x proportion of B in the mixture. Determination criteria: the co-toxicity coefficient is less than 80 for antagonism, the addition effect is between [80-120], and the synergy effect is achieved when the addition effect is more than 120.
Results and analysis:
as is clear from Table 1, the GR50 values of the original drug of isooctyl methochloride, the original drug of quinclorac and the original drug of terbuthylazine to the quinoa are 5.21 g/mu, 4.81 g/mu and 17.93 g/mu, respectively. When the dimethyltetrachloroisooctyl ester, the quinclorac original drug and terbuthylazine are compounded, the mass ratio is 1:1: 2. 1:1: the co-toxicity coefficients of the quinoa are 149.85 and 122.85 in the 1 time, and the synergistic effect is obvious; in particular to a compound of the isooctyl dimethyltetrachloride, the quinclorac original drug and terbutazine with the mass ratio of 1:1:2, the synergy and significance thereof. The compound of the isooctyl dimethyltetrachloride, the quinclorac original drug and the terbuthylazine has an addition effect on the quinoa when the mass ratio is 10:1:10, 1:10:1, 1:1:5 and 10:10:1.
In the subsequent test, the preparation and the field control effect test are carried out by adopting synergistic ternary combination (the mass ratio of the dimethyltetracloisooctyl ester, the quintocet-mexyl acid original drug and the terbuzin is 1:1:2).
Table 1 ternary herbicidal compositions for indoor bioassays on sorghum fields, weeds and quinoa
Example 2: indoor bioassay of ternary herbicidal composition on sorghum field weeds
Test agent: an isooctyl dichloride crude drug, a quinclorac crude drug and a terbuthylazine crude drug.
Test target: selecting annual sorghum weeds representing piemarker, barnyard grass and horse Tang Wei test subjects, and taking a plurality of mature and full seeds for later use.
Culture conditions: the test was carried out in a climatic chamber. Selecting a plurality of plastic pots with the diameter of 30cm, adding a proper amount of moist sterilized loam, completely wetting the soil by adopting a pot bottom infiltrating irrigation mode, uniformly broadcasting the pretreated tested weed seeds on the soil surface, covering a proper amount of sieving fine soil, preferably covering the weed seeds right time, transferring the plastic pots into a greenhouse for conventional culture after sowing, and supplementing water by adopting the pot bottom infiltrating irrigation mode. And (3) waiting for 2-3 leaf period of the grass weeds and 3-4 leaf period of broadleaf weeds, thinning, and reserving 20 plants in each pot.
And (3) medicament treatment: 2d after the weeds are thinned, carrying out stem and leaf spraying treatment according to the designed dosage, using an automatic control spraying tower for a spraying device, correcting the spraying amount before the test, carrying out stem and leaf spraying treatment according to the test design, and simultaneously, carrying out blank control by using 0.1% Tween 80 aqueous solution treatment containing the same amount of organic solvent. Each treatment was repeated 4 times.
Investigation and statistics: after the treatment, the growth state of the weeds to be tested was regularly observed and recorded, and after 21 days of the treatment, the weeds at the upper parts of the ground were harvested and the fresh weight thereof was called. Calculating fresh weight control effect. Fresh weight control= (average fresh weight of weeds in blank control area-average fresh weight of weeds in treated area)/average fresh weight of weeds in blank control area x 100%.
And carrying out data statistics according to the pesticide indoor bioassay test criterion, and checking the compounded herbicide by using a Gowi method and judging the combined action effect of the mixed herbicide. E0 represents a theoretical fresh weight control effect (hereinafter referred to as theoretical control effect) and E represents an actual fresh weight control effect (hereinafter referred to as actual control effect), wherein E0=a+b-a×b/100, a and b are the actual fresh weight control effects of 2 medicaments in each dose; an additive effect when E-E0 is less than or equal to-10 and less than or equal to 10, a synergistic effect when E-E0 is more than 10, and an antagonistic effect when E-E0 is less than or equal to-10
Results and analysis:
from tables 2 to 4, it is clear that the original drug of dimethyl tetracloisonne, the original drug of quinclorac and terbuthylazine are used singly or in binary combination, and the control effect on grassy weeds and broadleaf weeds is poor; after the original dimethyltetrachloroisooctyl ester, the original quinclorac and the original terbuthylazine are combined, the control effect of the ternary composition is obviously improved, and the ternary composition has obvious synergistic effect, so that the dosage of active ingredients can be effectively reduced, the generation of weed drug resistance is reduced, and the environmental pollution is reduced.
TABLE 2 indoor bioassay of ternary herbicidal compositions against sorghum field weed piemarker
Table 3 ternary herbicidal compositions on indoor bioassays of sorghum fields with weed barnyard grass
Table 4 ternary herbicidal compositions indoor bioassays on sorghum Tian Za turf grass
Example 3 formulation of ternary herbicidal compositions
Formulation 1: the 40% dimethyl dichloride super suspension emulsion comprises the following components in percentage by weight: 10% of isooctyl dimethyltetrachloride, 10% of quinclorac, 20% of terbuthylazine, 5% of Tween 80, 3% of NS-500LQ, 4% of Atlox-4916%, 4% of calcium lignin benzenesulfonate, 10% of methyl oleate and 100% of water;
the preparation process is as shown in figure 1: the original drug of the isooctyl dimethyltetrachloride is flowable liquid at normal temperature, but has slightly high viscosity and needs to be diluted by an organic solvent.
Formulation 2: the 40% dimethyl dichloride super suspension emulsion comprises the following components in percentage by weight: 10% of isooctyl dimethyltetrachloride, 10% of quinclorac, 20% of terbuthylazine, 5% of Tween 80, 500#3% of agricultural emulsion, SP-SC3 4%, 4% of calcium lignin benzenesulfonate, 10% of methyl oleate and 100% of water;
the preparation method is the same as that of the preparation 1.
Formulation 3: the 40% dimethyl dichloride super dispersible oil suspending agent comprises the following components in percentage by weight: 10% of isooctyl dimethyltetrachloride, 10% of quinclorac, 20% of terbuthylazine, 500#6% of agro-emulsion, 3% of calcium lignin benzenesulfonate, 5% of sodium dodecyl sulfate, 3% of tween 80 and 100% of methyl oleate.
Formulation 4:30% of dimethyl dichloride super dispersible oil suspending agent, which comprises the following components in percentage by weight: 10% of isooctyl dimethyltetrachloride, 10% of quinclorac, 10% of terbuthylazine, 500#5% of agro-emulsion, 3% of calcium lignin benzenesulfonate, 3% of sodium dodecyl sulfate, 2% of tween 80 and 100% of methyl oleate.
Example 4 field control of ternary herbicides on sorghum field weeds
Experimentally: test base of the farm and animal sciences institute in the Chifeng city. Sorghum crop field weed type: crabgrass, barnyard grass, green bristlegrass, quinoa, amaranthus retroflexus.
Test agent: formulations 1-4 in example 3;
the test method comprises the following steps: cell area 35m2, random block arrangement, 4 replicates per treatment, water control. Spraying by adopting manual stem and leaf, wherein the water spraying amount per hectare is 450kg; the fresh weight control effect of weeds is investigated 14 days after the pesticide, 4 points are fixed in each district, 0.5m < 2 > are fixed in each district, the fresh weight of overground parts of weeds is investigated, and the fresh weight control effect is calculated.
Fresh weight control= (fresh weight of weeds in control area-fresh weight of weeds in treatment area)/fresh weight of weeds in control area x 100%.
Results and analysis:
as shown in Table 5, the preparation 1-3 of the invention has excellent control effect on sorghum field weeds when the dosage of the preparation is 100 g/mu or when the dosage of the preparation 4 is 110 g/mu, and the control effect is more than 90%. In particular, the control effect of the formulation of the preparation 1 on sorghum field weeds is 98.8%; namely, the auxiliary material formula in the suspending agent of the preparation 1 has better promotion and promotion effects on the drug effect, and the specific reasons are still to be further studied.
Table 5 field control of ternary herbicides on sorghum field weeds
| Medicament | Dosage of the preparation g/mu | Fresh weight control effect% |
| Formulation 1 | 90 | 98.8a |
| Formulation 2 | 90 | 92.1b |
| Formulation 3 | 90 | 92.0b |
| Formulation 4 | 100 | 93.0b |
| CK | - | - |
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same.
Claims (9)
1. The weeding composition containing isooctyl dichloride, quinclorac and terbuthylazine is characterized by comprising the following active ingredients in parts by mass: the mass ratio of the isooctyl dichloride, the quinclorac and the terbuthylazine is 1-30:1-30:1-40.
2. The herbicidal composition according to claim 1, wherein the mass ratio of isooctyl methochloride, quinclorac and terbuthylazine is 5-15:5-15:10-30.
3. The weeding composition according to claim 2, wherein the mass ratio of isooctyl methochloride, quinclorac and terbuthylazine is 10:10:20.
4. A herbicidal composition according to any of claims 1-3, characterized in that the herbicidal composition comprises 1-85% active ingredient, comprising a pesticidally useful adjuvant ingredient.
5. The herbicidal composition of claim 4 wherein the adjuvant component comprises one or more of a dispersant, a wetting agent, an emulsifier, a thickener, a binder, a disintegrant, a preservative, a co-solvent, an antifreeze, a filler, and a solvent.
6. The herbicidal composition of claim 5 wherein the herbicidal composition is in the form of a dispersible oil suspension, a wettable powder, a water dispersible granule, a suspoemulsion.
7. Use of the herbicidal composition according to any of claims 1 to 6 for controlling crop field weeds.
8. The use according to claim 7, wherein the crop is sorghum; the weeds are grassy weeds, broadleaf weeds and sedge weeds.
9. The use according to claim 7, wherein the weed is barnyard grass, green bristlegrass, crabgrass, quinoa, amaranth, or canola.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311272201.2A CN117546853A (en) | 2023-09-28 | 2023-09-28 | Ternary weeding composition containing isooctyl dimethyl tetrachloride and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311272201.2A CN117546853A (en) | 2023-09-28 | 2023-09-28 | Ternary weeding composition containing isooctyl dimethyl tetrachloride and application thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117546853A true CN117546853A (en) | 2024-02-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311272201.2A Pending CN117546853A (en) | 2023-09-28 | 2023-09-28 | Ternary weeding composition containing isooctyl dimethyl tetrachloride and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117546853A (en) |
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2023
- 2023-09-28 CN CN202311272201.2A patent/CN117546853A/en active Pending
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