CN117099784A - Pesticide composition containing diflufenican and metolachlor and application thereof - Google Patents
Pesticide composition containing diflufenican and metolachlor and application thereof Download PDFInfo
- Publication number
- CN117099784A CN117099784A CN202310846522.2A CN202310846522A CN117099784A CN 117099784 A CN117099784 A CN 117099784A CN 202310846522 A CN202310846522 A CN 202310846522A CN 117099784 A CN117099784 A CN 117099784A
- Authority
- CN
- China
- Prior art keywords
- metolachlor
- diflufenican
- weeds
- pesticide composition
- pesticide
- Prior art date
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- WVQBLGZPHOPPFO-UHFFFAOYSA-N 2-chloro-N-(2-ethyl-6-methylphenyl)-N-(1-methoxypropan-2-yl)acetamide Chemical compound CCC1=CC=CC(C)=C1N(C(C)COC)C(=O)CCl WVQBLGZPHOPPFO-UHFFFAOYSA-N 0.000 title claims abstract description 56
- 239000005507 Diflufenican Substances 0.000 title claims abstract description 54
- WYEHFWKAOXOVJD-UHFFFAOYSA-N diflufenican Chemical compound FC1=CC(F)=CC=C1NC(=O)C1=CC=CN=C1OC1=CC=CC(C(F)(F)F)=C1 WYEHFWKAOXOVJD-UHFFFAOYSA-N 0.000 title claims abstract description 54
- 239000000203 mixture Substances 0.000 title claims abstract description 39
- 239000000575 pesticide Substances 0.000 title claims abstract description 33
- 241000196324 Embryophyta Species 0.000 claims abstract description 45
- 244000068988 Glycine max Species 0.000 claims abstract description 30
- 235000010469 Glycine max Nutrition 0.000 claims abstract description 30
- 240000008042 Zea mays Species 0.000 claims abstract description 30
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 claims abstract description 30
- 235000002017 Zea mays subsp mays Nutrition 0.000 claims abstract description 30
- 235000005822 corn Nutrition 0.000 claims abstract description 30
- 239000004480 active ingredient Substances 0.000 claims abstract description 7
- 238000009333 weeding Methods 0.000 claims abstract description 6
- 241001290610 Abildgaardia Species 0.000 claims abstract description 4
- 239000002131 composite material Substances 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 5
- 239000012752 auxiliary agent Substances 0.000 claims 1
- 239000002552 dosage form Substances 0.000 claims 1
- 239000000945 filler Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 16
- 239000003814 drug Substances 0.000 abstract description 15
- 230000007547 defect Effects 0.000 abstract description 4
- 229940079593 drug Drugs 0.000 abstract description 4
- 238000001228 spectrum Methods 0.000 abstract description 4
- 231100000653 occupational exposure banding Toxicity 0.000 abstract description 3
- 230000002411 adverse Effects 0.000 abstract description 2
- 230000000361 pesticidal effect Effects 0.000 abstract 1
- 239000002689 soil Substances 0.000 description 17
- 239000004009 herbicide Substances 0.000 description 16
- 230000002363 herbicidal effect Effects 0.000 description 11
- 230000002195 synergetic effect Effects 0.000 description 11
- 238000012360 testing method Methods 0.000 description 11
- 244000152970 Digitaria sanguinalis Species 0.000 description 9
- 235000010823 Digitaria sanguinalis Nutrition 0.000 description 9
- 241000192043 Echinochloa Species 0.000 description 9
- 235000001602 Digitaria X umfolozi Nutrition 0.000 description 8
- 235000017898 Digitaria ciliaris Nutrition 0.000 description 8
- 235000005476 Digitaria cruciata Nutrition 0.000 description 8
- 235000006830 Digitaria didactyla Nutrition 0.000 description 8
- 235000005804 Digitaria eriantha ssp. eriantha Nutrition 0.000 description 8
- 235000014716 Eleusine indica Nutrition 0.000 description 8
- 230000009471 action Effects 0.000 description 8
- 239000003795 chemical substances by application Substances 0.000 description 8
- 239000004033 plastic Substances 0.000 description 8
- 241001597062 Channa argus Species 0.000 description 7
- 239000000375 suspending agent Substances 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 241000234653 Cyperus Species 0.000 description 6
- 235000013339 cereals Nutrition 0.000 description 6
- 230000005764 inhibitory process Effects 0.000 description 6
- 210000000936 intestine Anatomy 0.000 description 6
- 230000002265 prevention Effects 0.000 description 6
- 238000009331 sowing Methods 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- 230000002829 reductive effect Effects 0.000 description 5
- -1 3-trifluoromethyl phenoxy Chemical group 0.000 description 4
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 4
- 210000004185 liver Anatomy 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 238000004166 bioassay Methods 0.000 description 3
- 230000002301 combined effect Effects 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- XIGAUIHYSDTJHW-UHFFFAOYSA-N mefenacet Chemical compound N=1C2=CC=CC=C2SC=1OCC(=O)N(C)C1=CC=CC=C1 XIGAUIHYSDTJHW-UHFFFAOYSA-N 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 230000001502 supplementing effect Effects 0.000 description 3
- 241000448435 Acalypha australis Species 0.000 description 2
- 244000025254 Cannabis sativa Species 0.000 description 2
- 235000021307 Triticum Nutrition 0.000 description 2
- 244000098338 Triticum aestivum Species 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 235000021466 carotenoid Nutrition 0.000 description 2
- 150000001747 carotenoids Chemical class 0.000 description 2
- 238000012258 culturing Methods 0.000 description 2
- JHIVVAPYMSGYDF-UHFFFAOYSA-N cyclohexanone Chemical compound O=C1CCCCC1 JHIVVAPYMSGYDF-UHFFFAOYSA-N 0.000 description 2
- 239000008367 deionised water Substances 0.000 description 2
- 229910021641 deionized water Inorganic materials 0.000 description 2
- 239000002270 dispersing agent Substances 0.000 description 2
- 238000001647 drug administration Methods 0.000 description 2
- 239000004495 emulsifiable concentrate Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000003973 irrigation Methods 0.000 description 2
- 230000002262 irrigation Effects 0.000 description 2
- 230000005923 long-lasting effect Effects 0.000 description 2
- 239000003094 microcapsule Substances 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- 229940051841 polyoxyethylene ether Drugs 0.000 description 2
- 229920000056 polyoxyethylene ether Polymers 0.000 description 2
- 235000010482 polyoxyethylene sorbitan monooleate Nutrition 0.000 description 2
- 229920000053 polysorbate 80 Polymers 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000012216 screening Methods 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 239000000230 xanthan gum Substances 0.000 description 2
- 229920001285 xanthan gum Polymers 0.000 description 2
- 229940082509 xanthan gum Drugs 0.000 description 2
- 235000010493 xanthan gum Nutrition 0.000 description 2
- 125000004215 2,4-difluorophenyl group Chemical group [H]C1=C([H])C(*)=C(F)C([H])=C1F 0.000 description 1
- DMAXMXPDVWTIRV-UHFFFAOYSA-N 2-(2-phenylethyl)phenol Chemical compound OC1=CC=CC=C1CCC1=CC=CC=C1 DMAXMXPDVWTIRV-UHFFFAOYSA-N 0.000 description 1
- GVKDLCPTYCLSQW-YFKNTREVSA-N C(\C=C/C(=O)OC(C)CCCCCC)(=O)OC(C)CCCCCC.[Na] Chemical compound C(\C=C/C(=O)OC(C)CCCCCC)(=O)OC(C)CCCCCC.[Na] GVKDLCPTYCLSQW-YFKNTREVSA-N 0.000 description 1
- 208000003643 Callosities Diseases 0.000 description 1
- 244000108484 Cyperus difformis Species 0.000 description 1
- 244000150195 Cyperus longus Species 0.000 description 1
- 244000075634 Cyperus rotundus Species 0.000 description 1
- 235000016854 Cyperus rotundus Nutrition 0.000 description 1
- 241000123589 Dipsacus Species 0.000 description 1
- 241001391115 Gelsemium elegans Species 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 1
- 206010020649 Hyperkeratosis Diseases 0.000 description 1
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 1
- 244000292697 Polygonum aviculare Species 0.000 description 1
- 235000006386 Polygonum aviculare Nutrition 0.000 description 1
- 235000005010 Scirpus paludosus Nutrition 0.000 description 1
- 244000150738 Sesamum radiatum Species 0.000 description 1
- 235000010086 Setaria viridis var. viridis Nutrition 0.000 description 1
- 235000002594 Solanum nigrum Nutrition 0.000 description 1
- 240000002307 Solanum ptychanthum Species 0.000 description 1
- 229920001807 Urea-formaldehyde Polymers 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- GZCGUPFRVQAUEE-SLPGGIOYSA-N aldehydo-D-glucose Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C=O GZCGUPFRVQAUEE-SLPGGIOYSA-N 0.000 description 1
- SNAAJJQQZSMGQD-UHFFFAOYSA-N aluminum magnesium Chemical compound [Mg].[Al] SNAAJJQQZSMGQD-UHFFFAOYSA-N 0.000 description 1
- 230000008485 antagonism Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000002775 capsule Substances 0.000 description 1
- 239000004359 castor oil Substances 0.000 description 1
- 235000019438 castor oil Nutrition 0.000 description 1
- 210000000170 cell membrane Anatomy 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229930002875 chlorophyll Natural products 0.000 description 1
- 235000019804 chlorophyll Nutrition 0.000 description 1
- ATNHDLDRLWWWCB-AENOIHSZSA-M chlorophyll a Chemical compound C1([C@@H](C(=O)OC)C(=O)C2=C3C)=C2N2C3=CC(C(CC)=C3C)=[N+]4C3=CC3=C(C=C)C(C)=C5N3[Mg-2]42[N+]2=C1[C@@H](CCC(=O)OC\C=C(/C)CCC[C@H](C)CCC[C@H](C)CCCC(C)C)[C@H](C)C2=C5 ATNHDLDRLWWWCB-AENOIHSZSA-M 0.000 description 1
- 239000013530 defoamer Substances 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- YDEXUEFDPVHGHE-GGMCWBHBSA-L disodium;(2r)-3-(2-hydroxy-3-methoxyphenyl)-2-[2-methoxy-4-(3-sulfonatopropyl)phenoxy]propane-1-sulfonate Chemical compound [Na+].[Na+].COC1=CC=CC(C[C@H](CS([O-])(=O)=O)OC=2C(=CC(CCCS([O-])(=O)=O)=CC=2)OC)=C1O YDEXUEFDPVHGHE-GGMCWBHBSA-L 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000001094 effect on targets Effects 0.000 description 1
- 238000004945 emulsification Methods 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 230000001804 emulsifying effect Effects 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003188 fatty acid synthesis inhibitor Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- ZEMPKEQAKRGZGQ-XOQCFJPHSA-N glycerol triricinoleate Natural products CCCCCC[C@@H](O)CC=CCCCCCCCC(=O)OC[C@@H](COC(=O)CCCCCCCC=CC[C@@H](O)CCCCCC)OC(=O)CCCCCCCC=CC[C@H](O)CCCCCC ZEMPKEQAKRGZGQ-XOQCFJPHSA-N 0.000 description 1
- 244000230342 green foxtail Species 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000012010 growth Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 230000002147 killing effect Effects 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 150000004668 long chain fatty acids Chemical class 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012452 mother liquor Substances 0.000 description 1
- 239000010413 mother solution Substances 0.000 description 1
- WZHLEJIFYNDDAO-UHFFFAOYSA-N n,2-dichloroacetamide Chemical class ClCC(=O)NCl WZHLEJIFYNDDAO-UHFFFAOYSA-N 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 108010001545 phytoene dehydrogenase Proteins 0.000 description 1
- 239000005648 plant growth regulator Substances 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 238000006068 polycondensation reaction Methods 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
- 230000002335 preservative effect Effects 0.000 description 1
- JUJWROOIHBZHMG-UHFFFAOYSA-N pyridine Substances C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 1
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
- 238000004260 weight control Methods 0.000 description 1
- 230000002087 whitening effect Effects 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/34—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one nitrogen atom as the only ring hetero atom
- A01N43/40—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one nitrogen atom as the only ring hetero atom six-membered rings
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N37/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids
- A01N37/18—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids containing the group —CO—N<, e.g. carboxylic acid amides or imides; Thio analogues thereof
- A01N37/22—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids containing the group —CO—N<, e.g. carboxylic acid amides or imides; Thio analogues thereof the nitrogen atom being directly attached to an aromatic ring system, e.g. anilides
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01P—BIOCIDAL, PEST REPELLANT, PEST ATTRACTANT OR PLANT GROWTH REGULATORY ACTIVITY OF CHEMICAL COMPOUNDS OR PREPARATIONS
- A01P13/00—Herbicides; Algicides
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Zoology (AREA)
- Wood Science & Technology (AREA)
- Plant Pathology (AREA)
- Environmental Sciences (AREA)
- Engineering & Computer Science (AREA)
- Pest Control & Pesticides (AREA)
- General Health & Medical Sciences (AREA)
- Dentistry (AREA)
- Agronomy & Crop Science (AREA)
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
The invention discloses a pesticide composition containing diflufenican and metolachlor and application thereof, wherein the pesticide composition comprises the active ingredients of diflufenican and metolachlor in a mass ratio of 1:1-1:25. The pesticide composition has obvious synergism within the proportion range, reduces the dosage of pesticides, reduces the times of using the pesticides, reduces the cost of using the pesticides, and reduces the adverse effect of the pesticides on the ecological environment; the weeding spectrum is enlarged, the problem of various weeds in the soybean and corn banded compound planting field can be solved by one-time medication, and the defects and limitations of single-dose use are overcome; prolonging the service life of the medicament and having important significance for comprehensive treatment of weed resistance; the pesticide effect can be rapidly exerted, the duration is long, the use cost is low, and the pesticide can be used for preventing and controlling gramineous weeds, broadleaf weeds and sedge weeds in the soybean and corn banded compound planting field.
Description
Technical Field
The invention belongs to the technical field of pesticides, and particularly relates to a pesticide composition containing diflufenican and mefenacet for preventing and removing grassy weeds, broad-leaved weeds and sedge weeds in soybean and corn banded composite planting fields.
Background
The strip-shaped composite planting of the soybean and the corn is one of important cultivation modes for solving the defects of the cultivated area and the improvement of the grain and the oil yield, but because the strip-shaped composite planting of the soybean and the corn is complex in field grass phase, the types of the herbicide which are safe for two crops simultaneously are few, and the grass damage becomes a main obstacle for high yield, stable yield and high quality of the soybean and the corn. Therefore, the research and study on the efficient, safe and low-risk weeding combination suitable for the soybean and corn banded compound planting field is particularly important.
The diflufenican and the metolachlor are selective herbicides developed by the company just before reaching, mainly aiming at weeds in soybean and corn fields, have wide weed control spectrum, and have the characteristics of high safety and good control effect.
Diflufenican, chemical name: n- (2, 4-difluorophenyl) -2- (3-trifluoromethyl phenoxy) -3-pyridine anilide belongs to substituted pyridine anilide herbicides. By inhibiting phytoene dehydrogenase, carotenoid biosynthesis is hindered. The carotenoid content in the treated plant plants is reduced, which in turn leads to chlorophyll destruction, cell membrane rupture, and weeds appear as discoloration or whitening of the shoots. The diflufenican is used for preventing and killing annual grassy weeds and partial broadleaf weeds in fields such as corn, soybean, wheat and the like, such as broadleaf weeds such as gelsemium elegans, wild sesame, dipsacus root, polygonum aviculare, black nightshade and the like, grassy weeds such as barnyard grass and green bristlegrass and the like.
Metolachlor, chemical name: 2-chloro-N- (2-ethyl-6-tolyl) -N- [ (1S) -2-methoxy-1-methylethyl ] acetamide, belongs to the class of chloroacetyl chloramine herbicides. The super long chain fatty acid synthesis inhibitor can be absorbed and conducted upwards by coleoptile of monocotyledonous plant and hypocotyl of dicotyledonous plant, and can be absorbed and conducted by seed and root. After emergence, the seedlings are mainly absorbed by roots and conducted upwards, so that growth of buds and roots is inhibited. Sensitive weeds die immediately before emergence or immediately after emergence of seedlings due to poisoning, and the sensitive weeds are shown as bud sheaths tightly wrapping growing points, slightly thickening, thin radicle and bending, no fibrous root, and the growing points gradually turn brown and are rotten. The metolachlor can prevent and remove annual gramineous weeds and broadleaf weeds in fields such as corn, soybean, wheat and the like.
Disclosure of Invention
The invention aims to: aiming at the problems of serious weed harm, less herbicide variety, high weeding cost, serious weed resistance spreading, poor single-use prevention and treatment effect of the strip-shaped composite planting field in the prior art, the invention aims to provide the pesticide composition containing diflufenican and metolachlor, which has the characteristics of broad spectrum, high efficiency, special efficacy on resistant weeds, environmental friendliness, contribution to comprehensive weed control and the like. The invention also aims to provide an application of the pesticide composition of diflufenican and metolachlor.
The technical scheme is as follows: in order to achieve the aim of the invention, the invention adopts the following technical scheme:
the pesticide composition containing diflufenican and metolachlor comprises the active ingredients of diflufenican and metolachlor, and the mass ratio of diflufenican to metolachlor is 1:1-1:25.
The preferred mass ratio of diflufenican to metolachlor is 1:1, 1:2.5, 1:5, 1:10, 1:15, 1:20 or 1:25.
The pesticide composition containing the diflufenican and the metolachlor is applied to prevention and treatment of gramineous weeds, broadleaf weeds and sedge weeds in soybean and corn banded fields. When preventing and controlling weeds, the herbicide is used after crop sowing and before emergence of seedlings.
The pesticide composition containing diflufenican and the metolachlor provided by the invention is usually used by adopting a spraying method, and can also be used by adopting other application technologies applied to agriculture according to the needs.
The beneficial effects are that: compared with the prior art, the pesticide composition containing diflufenican and metolachlor has the following advantages:
1) The pesticide composition containing diflufenican and mefenacet has obvious synergistic effect in a certain proportion range, the control effect of the composition is obviously improved compared with that of a single pesticide, the dosage of the pesticide is reduced, the number of times of using the pesticide is reduced, the cost of using the pesticide is reduced, and the adverse effect of the pesticide on the ecological environment is reduced.
2) The pesticide composition containing diflufenican and metolachlor has the advantages that the weeding spectrum is enlarged due to the combination of the two active ingredients, the problems of various weeds are solved by once application, and the defects and limitations of single-dose use are overcome.
3) The pesticide composition containing diflufenican and mefenacet has different action mechanisms of active ingredients, can overcome the defect that resistance is easy to generate when being singly used for a long time, prolongs the service life of the pesticide composition, and has important significance for comprehensive treatment of weed resistance.
4) The pesticide composition containing diflufenican and the metolachlor has the advantages of quick effect exertion, long lasting period, low use cost, convenient use, time and labor saving, and particularly has better prevention effect on barnyard grass weeds, crabgrass, snakehead intestines and special-shaped nutgrass flatsedge, and has great economic and social benefits in popularization and application.
Detailed description of the preferred embodiments
The invention will be further illustrated with reference to specific examples. The following description is of preferred embodiments of the invention, but is made merely for the purpose of illustrating the invention and is not to be construed as limiting the scope of the invention. It should be noted that any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
In the examples which follow, all percentages are by weight unless otherwise indicated.
Example 1:40% diflufenican-fine metolachlor microcapsule suspending agent
4% of diflufenican, 36% of fine metolachlor, 3% of castor oil polyoxyethylene ether, 4% of di-sec-octyl maleate sodium sulfonate, 1.5% of alkylbenzene sulfonate, 1% of dispersant NNO and 100% of deionized water.
The preparation method comprises the following steps:
at normal temperature, the diflufenican and the fine metolachlor are completely dissolved in 10 percent of cyclohexanone and 10 percent of N-methylpyrrolidone, 28 percent of urea-formaldehyde resin prepolymer aqueous solution is added while stirring, and shearing is carried out for 25 minutes at the rotating speed of 1600 revolutions per minute, so that stable O/W emulsion is obtained. Reducing the rotating speed to 800 revolutions per minute, adding dilute hydrochloric acid into the mixture for 5 batches within 1 hour to adjust the pH value to 3.0, carrying out polycondensation reaction, gradually heating to 50 ℃ to solidify the capsule wall for 1.5 hours, adding sodium hydroxide to adjust the pH value to 7.5, adding an emulsifying agent and a dispersing agent, and supplementing the mixture to 100% by deionized water. And shearing for 15 minutes at a rotation speed of 5000 revolutions per minute to obtain the 40% diflufenican-metolachlor microcapsule suspending agent.
Example 2:44% diflufenican-fine metolachlor suspending agent
4% of diflufenican, 40% of fine metolachlor, 5% of phenethyl phenol polyoxyethylene ether, 8% of sodium lignin sulfonate, 5% of ethylene glycol, 2% of magnesium aluminum silicate, 0.5% of defoamer, 0.1% of preservative, 0.1% of xanthan gum and 100% of water.
The preparation method comprises the following steps:
adding the components into a reaction kettle mixer according to the component and quality requirements, stirring uniformly, injecting the materials into a multistage sand mill for grinding, discharging after 98% of the ground materials pass through 1-5 um, and placing the materials into a high-shear emulsifying kettle together with pre-dissolved xanthan gum for emulsification to prepare the 32% fluoroketosulfenamide-bicyclosulfenate suspending agent.
Example 3:56% diflufenican-fine metolachlor suspending agent
The herbicide composition containing diflufenican and metolachlor comprises the following components: 6% of diflufenican, 50% of metolachlor and the balance of the same as in example 2.
Example 4:60% diflufenican-fine metolachlor suspending agent
The herbicide composition containing diflufenican and metolachlor comprises the following components: 10% of diflufenican, 50% of metolachlor and the balance of the same as in example 2.
Example 5:67% diflufenican-fine metolachlor suspending agent
The herbicide composition containing diflufenican and metolachlor comprises the following components: 12% of diflufenican, 65% of metolachlor and the balance of the same as in example 2.
Example 6: optimal proportioning screening of diflufenican and metolachlor
In order to explore the combined action of diflufenican and metolachlor on weeds and the safety of crops, formula screening is carried out on the diflufenican and metolachlor by an indoor bioassay test.
Test weeds: barnyard grass (Echinochloa crusgali (L.) Beauv.), crabgrass (Digitaria sanguinalis (L.) Scop.), snakehead intestine (Edpta prostrata L.), and heteromorphic Cyperus rotundus (Cyperus difformis L.) are collected from the academy of agricultural sciences of Jiangsu province 10 months in 2021, naturally air-dried at room temperature, packaged in paper bags, and stored in a refrigerator at 4+ -0.5 ℃.
Test instrument: PWT-510 spray towers, mertler AB135-S electronic balances, volumetric flasks, triangular flasks, beakers, graduated cylinders, plastic bowls, pipettes, scales, scissors, and the like.
Preparing mother liquor: firstly, weighing a certain mass of diflufenican and metolachlor, adding acetone for full dissolution, diluting with 0.1% Tween 80 aqueous solution, preparing into a single-dose mother solution, setting a series of proportions according to the mixing purpose, and setting 5-9 concentration gradients for standby. A blank was prepared by adding an equal amount of acetone to an equal amount of 0.1% Tween 80 in water.
The test method comprises the following steps: a plastic pot (7 cm. Times.7 cm. Times.9 cm) was filled with air-dried fine soil, and the soil was completely wetted by infiltrating irrigation at the bottom of the plastic pot. The soil is horse liver soil, the pH value is 6.7, the organic matter content is 1.6%, and the horse liver soil is air-dried and sieved for standby. Each plastic pot is respectively sown with 20 grains of barnyard grass, 20 grains of crabgrass, 15 grains of snakehead intestines and about 20 grains of special-shaped nutgrass galingale, and the thickness of the sown fine soil is about 0.2-0.5 cm. After 2 hours from sowing, the PWT-510 type spray tower carries out soil spraying, and the liquid medicine amount is 30L/667m 2 . After treatment, the mixture is put into the academy of agricultural sciences of Jiangsu province for 300m 2 Culturing in a sunlight greenhouse, and periodically supplementing water to keep soil moist.
Investigation mode: and (5) regularly observing the emergence condition of barnyard grass, snakehead intestines, crabgrass and abnormal-shaped nutgrass flatsedge after the medicine. 30 days after the pesticide, the fresh weight of the barnyard grass, the snakehead intestines, the crabgrass and the special-shaped nutgrass flatsedge is investigated, and the fresh weight inhibition rate, namely the control effect on target weeds, is calculated. The combined effect of the two medicaments after being mixed is evaluated by a Gowing method, and the formula is as follows:
e (%) = (control fresh weed weight-treated fresh weed weight)/control fresh weed weight x 100
E 0 (％)＝X+Y(100-X)/100
Wherein X is the fresh weight inhibition rate of diflufenican to weeds at the dosage, and Y is the fresh weight inhibition rate of the metolachlor at the dosage. E (E) 0 The natural plant growth regulator is a theoretical fresh weight inhibition rate, namely a theoretical prevention effect, of weed inhibition after two active ingredients are mixed. When E-E 0 Value of>At 10% it is synergistic, E-E 0 Value of<Antagonism at-10%, E-E 0 The values are additive at-10% to 10%.
Test results: the diflufenican and the metolachlor have higher control effect on fresh weight of the overground part of barnyard grass after being compounded 30 days after the medicine, and have obvious synergistic effect after the two components are compounded. The combined action coefficients of diflufenican and metolachlor in the proportion of 1:1-1:25 are all larger than 10, wherein the synergistic effect of the proportion of 1:15 is most obvious, and the combined coefficient is 13.885 (table 1).
Table 1 combined action of diflufenican-prim-metolachlor mix on fresh weight of barnyard grass-30 days after administration
The control effect on fresh weight of the aerial parts of crabgrass after the diflufenican and the metolachlor are compounded is higher 30 days after the medicine is taken, the two components have obvious synergistic effect after being compounded, the combined action coefficients of the diflufenican and the metolachlor are all larger than 10 when the ratio is 1:1-1:25, wherein the synergistic effect of the ratio is the most obvious when the ratio is 1:20, and the combined coefficient is 13.031 (table 2).
Table 2 combined effect of diflufenican-metolachlor mix on Ma Tangxian weight-30 days post-drug
The control effect on fresh weight of overground parts of snakehead intestines after the diflufenican and the metolachlor are compounded is higher 30 days after the medicine is taken, the two components have obvious synergistic effect after being compounded, the combined action coefficients of the diflufenican and the metolachlor are all larger than 10 when the ratio is 1:5-1:25, wherein the synergistic effect of the ratio is the most obvious when the ratio is 1:10, and the combined coefficient is 14.351 (table 3).
TABLE 3 Combined action of diflufenican-metolachlor mix on fresh weight of snakehead intestines-30 days after administration
The control effect on the fresh weight of the overground part of the special-shaped nutgrass flatsedge after the diflufenican and the metolachlor are compounded is higher 30 days after the medicine is taken, the obvious synergistic effect is achieved after the two components are compounded, the combined action coefficient of the diflufenican and the metolachlor in the ratio of 1:1-1:25 is greater than 10, the synergistic effect of the ratio of 1:5 is most obvious, and the combined coefficient is 11.434 (table 4).
Table 4 combined effect of diflufenican-cumin mix on fresh weight of heterotypic nutgrass galingale-30 days after drug administration
Example 7: the safety indoor bioassay of the diflufenican and the metolachlor for soybean corn is verified by the indoor bioassay test.
Test crop: soybeans (Su Dou 13, xu Dou, su Xin 6, supplied by the national institute of agricultural sciences, jiangsu province); corn (Su Kenuo 1505, su Yu 42, jiangyu 898, provided by the academy of agricultural sciences of Jiangsu province and food crop research institute)
Test instrument: PWT-510 spray towers, mertler AB135-S electronic balances, volumetric flasks, triangular flasks, beakers, graduated cylinders, plastic bowls, pipettes, scales, scissors, and the like.
Test agent: the mixed herbicides prepared in examples 1 to 5 were selected.
Control agent: 960g/L refined metolachlor emulsifiable concentrate (commercially available)
41% diflufenican suspension (commercially available)
The test method comprises the following steps: a plastic pot (15 cm. Times.15 cm. Times.11 cm) was filled with air-dried fine soil, and the soil was completely wetted by infiltrating irrigation at the bottom of the plastic pot. The soil is horse liver soil, the pH value is 6.7, the organic matter content is 1.6%, and the horse liver soil is air-dried and sieved for standby. Each plastic pot is respectively sown with 16 grains of soybean or corn, and fine soil completely covers seeds after sowing. After 2 hours from sowing, the PWT-510 type spray tower carries out soil spraying, and the liquid medicine amount is 30L/667m 2 . After treatment, the mixture is put into the academy of agricultural sciences of Jiangsu province for 300m 2 Culturing in a sunlight greenhouse, and periodically supplementing water to keep soil moist. The soybean and corn emergence rates were investigated 10 days after the drug. 30 days after the medicine, the fresh weight of the overground parts of soybeans and corns was investigated.
The test results are shown in tables 5 to 6.
TABLE 5 influence of diflufenican-metolachlor mixture on soybean and corn emergence rate-10 days after drug administration
Note that: * T is the recommended dose of the agent, 2T is 2 times the recommended dose of the agent, and 4T is 4 times the recommended dose of the agent. The following is the same.
Table 6 influence of diflufenican-cumin on fresh weight of soybean and corn by mixing-30 days after drug
The herbicide compositions prepared in examples 1-5 were treated at 2-fold and 4-fold of the recommended dosages, with soybean and corn emergence rates of greater than 98% and fresh weight inhibition rates of less than 3%, which were safe for soybean and corn. The herbicide compositions prepared in examples 1 to 5 are significantly safer than the control single dose, especially under 4T treatment conditions.
Example 8 field efficacy test
Test agent: the mixed herbicides prepared in examples 1 to 5 were selected.
Control agent: 960g/L refined metolachlor emulsifiable concentrate (commercially available)
41% diflufenican suspension (commercially available)
Setting water contrast
The using method comprises the following steps: and (3) treating the soybean corn post-sowing soil before seedling, wherein the liquid medicine amount is 30 liters/mu.
Time of application: and (3) planting and sowing the soybean and corn in a belt-shaped composite mode (Su Dou No. 13, jiangyu 898) for 18 days of 2022 and for 19 days of 6.
Panelists and methods: weeds (barnyard weeds, crabgrass, acalypha australis, heterocyperus) and crops (soybeans and corn), the fresh weight of the aerial parts of the weeds, the fresh weight of the aerial parts of the crops and the plant height were investigated on 7 months and 19 days.
The test results are shown in Table 7.
TABLE 7 results of field efficacy test-weed control
Table 8 results of field efficacy test-crop safety
As can be seen from tables 7 and 8, in the field efficacy test, the herbicide compositions prepared in examples 1 to 5 have significantly higher fresh weight control effects on the aerial parts of the barnyard grass weeds, crabgrass, acalypha australis and heterotypic cyperus in the soybean and corn strip composite planting fields than the control agent, and are safe to soybean and corn. The herbicide composition prepared in the examples 1-5 has obvious synergistic effect on the weeds in the soybean and corn strip-shaped composite planting field, has a better prevention and control effect on the weeds in the soybean and corn strip-shaped composite planting field, has the effect obviously superior to that of single dosage, is safe to soybeans and corn, and has the advantages of wide herbicide controlling spectrum, high prevention effect, long lasting period and safety to soybeans and corn.
Claims (5)
1. A pesticide composition containing diflufenican and metolachlor is characterized in that: the active ingredients are diflufenican and metolachlor, and the mass ratio of diflufenican to metolachlor is 1:1-1:25.
2. the pesticide composition containing diflufenican and metolachlor according to claim 1, characterized in that: the mass ratio of diflufenican to the fine metolachlor is 1:1, 1:2.5, 1:5, 1:10, 1:15, 1:20 or 1:25.
3. The method according to claim 2, characterized in that: the sum of the mass of the diflufenican and the mass of the metolachlor accounts for 1-90% of the total weight of the weeding composition.
4. A method according to claim 3, characterized in that: the weeding composition takes diflufenican and metolachlor as main active ingredients, and is prepared into corresponding dosage forms with auxiliary agents and/or fillers allowed in pesticides.
5. The use of the pesticide composition containing diflufenican and metolachlor according to claim 1 for controlling grassy weeds, broadleaf weeds and sedge weeds in soybean and corn ribbon composite fields.
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