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CN-121970761-A - Weeding composition containing topramezone, fenpyr-diethyl and metribuzin and application thereof

CN121970761ACN 121970761 ACN121970761 ACN 121970761ACN-121970761-A

Abstract

The invention provides a weeding composition containing topramezone, fenpyr-diethyl and metribuzin, wherein the mass ratio of the topramezone to the fenpyr-diethyl to the metribuzin is (1-5): 1-10. The weeding composition has obvious synergistic effect, can obviously improve the weeding effect of the medicament, reduce the dosage of the medicament, slow down the generation of pesticide resistance and reduce environmental pollution, and can be used for preventing and killing annual weeds of corn, and has excellent weeding effect.

Inventors

  • WANG MING
  • LI HONGYUAN
  • ZHAO SHOUMING
  • ZHANG CAI
  • Xie Yinxian

Assignees

  • 山东德浩化学有限公司

Dates

Publication Date
20260505
Application Date
20260115

Claims (9)

  1. 1. The weeding composition containing the topramezone is characterized in that the active ingredients contain the topramezone, the fenpyr-diethyl and the metribuzin, and the mass ratio of the topramezone to the fenpyr-diethyl to the metribuzin is (1-5) (1-10).
  2. 2. The weeding composition according to claim 1, wherein the active ingredients include topramezone, fenpyr-ethyl and metribuzin, and the mass ratio of topramezone, fenpyr-ethyl and metribuzin is (2-5): 4-8.
  3. 3. The weeding composition according to claim 2, wherein the mass ratio of topramezone, fenpyr-ethyl and metribuzin is 1:5 (4-8).
  4. 4. A herbicidal composition according to claim 3, characterized in that the mass ratio of topramezone, topramezone sulfone and metribuzin is 1:5:4, 1:5:6 or 1:5:8.
  5. 5. The herbicidal composition of any one of claims 1 to 4, wherein the herbicidal composition is formulated in any formulation suitable for agricultural use in combination with a pesticidal adjuvant.
  6. 6. The herbicidal composition of claim 5 wherein the total mass percent of active ingredients is 1-75%.
  7. 7. The herbicidal composition of claim 6, wherein the formulation is a suspension, a dispersible oil suspension, an emulsifiable concentrate, a suspoemulsion, a water dispersible granule, or a wettable powder.
  8. 8. Use of the herbicidal composition according to any one of claims 1 to 7 for combating maize weeds.
  9. 9. The use according to claim 8, wherein the weeds are annual weeds.

Description

Weeding composition containing topramezone, fenpyr-diethyl and metribuzin and application thereof Technical Field The invention belongs to the field of herbicides, and particularly relates to a weeding composition containing topramezone, fenpyrad and metribuzin and application thereof. Background The topramezone belongs to topramezone derivatives, the control effect of the topramezone on broadleaf weeds such as quinoa, acalypha australis, field bindweed, amaranth, dayflower, field thistle, snakehead and the like is obviously better than that of topramezone, the drug effect is about 2 times of that of topramezone, the control effect of the purslane on broadleaf weeds is obviously better than that of topramezone, the drug effect is about 3.8 times of that of topramezone, and the control effect of the abutilon on broadleaf weeds is equivalent to that of topramezone. The development of the topramezone solves the problems that the prior topramezone has poor effect on the cyperaceae weeds, poor continuous control capability on broadleaf weeds and no scouring resistance. The chemical structure of the topiramate is as follows: CN202311455118.9 is disclosed in patent literature. The haloxyfop-methyl belongs to isoxazole herbicides, can specifically inhibit a plurality of extension steps catalyzed by VLCFA extension enzyme, is mainly absorbed by plants through buds and roots and can also be absorbed by tender stems and leaves, so that the growth of apical meristems and coleoptile is blocked. Oxazin belongs to triazinone selective herbicides, and mainly exerts herbicidal activity by inhibiting photosynthesis of sensitive plants. Is used for preventing and controlling annual weeds in potato fields, corn fields and spring soybean fields. The long-term single use of the herbicide composition is easy to cause the generation of weed drug resistance, causes pollution to the environment, and the search for a synergistic composition capable of improving the weeding effect and reducing the application dosage of the active ingredients is the research and development focus of a plurality of domestic pesticide companies. In the prior art, no related record is made on the compound use of the topramezone, the fenpyr-diethyl and the metribuzin. Disclosure of Invention The invention provides a weeding composition containing topramezone and application thereof, the weeding composition has remarkable synergistic effect. The specific technical scheme is as follows: The weeding composition comprises the active ingredients of the topramezone, the fenpyr-diethyl and the metribuzin, wherein the mass ratio of the topramezone to the fenpyr-diethyl to the metribuzin is (1-5): 1-10. Preferably, the mass ratio of the topramezone to the fenpyr-diethyl to the oxaziclomefone is 1:2-5:4-8, preferably, the mass ratio of the topramezone to the fenpyr-diethyl to the oxaziclomefone is 1:5:4-8, more preferably, the mass ratio of the topramezone to the fenpyr-diethyl to the oxaziclomefone is 1:5:4, the mass ratio of the topramezone to the oxaziclomefone is 1:5:6, or the mass ratio of the topramezone to the oxaziclomefone is 1:5:8. The weeding composition is mixed with pesticide auxiliary materials to prepare any preparation suitable for agriculture, and the total mass percentage of active ingredients is 1-75%. The preparation provided by the invention is suspending agent, dispersible oil suspending agent, emulsifiable concentrate, suspending emulsion, water dispersible granule and wettable powder. The weeding composition is used for preventing and killing corn weeds, especially annual weeds such as barnyard grass, crab grass, green bristlegrass, purslane, amaranth and the like. Compared with the prior art, the invention has the following beneficial effects: The weeding composition has obvious synergistic effect, can obviously improve the weeding effect of the medicament, reduce the dosage of the medicament, slow down the generation of pesticide resistance and reduce environmental pollution, and can be used for preventing and killing annual weeds of corn, and has excellent weeding effect. Detailed Description The invention will be better understood from the following examples. However, it will be readily appreciated by those skilled in the art that the description of the embodiments is provided for illustration only and should not limit the invention as described in detail in the claims. Example 1 indoor bioassay of a herbicidal composition on Portulaca oleracea The weeds to be tested are purslane, mature seeds are collected in the field, and the seeds are cultivated and stored in a laboratory. The test agent comprises topramezone, fenpyr-diethyl and zinone. The test method is a greenhouse potting method. The test soil is special test soil collected from the unused land. Placing the flowerpot into the water-containing pot, and adopting the bottom of the pot to make the soil moist. A certain amount of purslane seeds are sown in the flowerpot, and the soil i