CN113197216A

CN113197216A - Weeding composition containing glufosinate-ammonium, haloxyfop-R-methyl and fluoroglycofen-ethyl

Info

Publication number: CN113197216A
Application number: CN202110446479.1A
Authority: CN
Inventors: 李玉洁; 李冰清; 李多才
Original assignee: Zhongtu Chemical Anhui Co ltd
Current assignee: Zhongtu Chemical Anhui Co ltd
Priority date: 2021-04-22
Filing date: 2021-04-22
Publication date: 2021-08-03

Abstract

The invention provides a herbicide composition, which contains glufosinate-ammonium, haloxyfop-R-methyl and fluoroglycofen-ethyl, wherein the weight ratio of the glufosinate-ammonium, the haloxyfop-R-methyl and the fluoroglycofen-ethyl is 15-40: 0.5-3: 1-3; can be used for preventing and controlling annual weeds and has obvious synergistic effect.

Description

Weeding composition containing glufosinate-ammonium, haloxyfop-R-methyl and fluoroglycofen-ethyl

Technical Field

The invention belongs to the field of pesticides, and particularly relates to a weeding composition and application thereof.

Background

Glufosinate belongs to phosphonic acid herbicides, is a non-selective contact herbicide, has an action mechanism of a glutamine synthesis inhibitor, and can cause ammonium ion accumulation and damage of a photopolymerized layer after the glutamine synthesis is inhibited, so that the aim of killing weeds is fulfilled. Can effectively prevent and kill monocotyledonous and dicotyledonous weeds and has the function of transverse transfer in leaves. Can be used for preventing and killing annual and perennial dicotyledonous and gramineous weeds such as crabgrass, barnyard grass, green foxtail, wild barley, etc. in non-cultivated land. Perennial grassy weeds such as cocksfoot, fescue, ryegrass, pepperweed, bluegrass, wild oat, sedge, cleavers, wild sesame, black nightshade, chickweed, creeping wheatgrass, fimbriate grass, bermudagrass, amaranthus retroflexus and the like.

The high-efficiency haloxyfop-methyl is a post-emergence stem and leaf treatment herbicide, can be used for preventing and killing annual gramineous weeds such as alopecurus, barnyard grass, crab grass, green bristlegrass, goosegrass herb, wild oat, reed and the like, is safe to broad-leaved crops when being used under normal conditions, and has stable effect under low temperature conditions.

The fluoroglycofen-ethyl is a selective contact-type postemergence herbicide, has high activity and is safe to next-stubble crops. The weeding composition is extremely effective to various malignant broad-leaved weeds, and can be quickly absorbed by leaves after being used, so that the photosynthesis of the weeds is destroyed, and the leaves are yellow and withered quickly. Can effectively prevent and kill off annual broadleaf weeds such as dayflower, goosefoot, amaranth, polygonum, xanthium sibiricum, black nightshade, abutilon, elsholtzia, copperleaf herb, purslane, field bindweed and the like.

In the prior art, the combination of two or more than two active ingredients is used, the generation of drug resistance is slowed down, and the use amount of pesticides is reduced, which is a hot point of pesticide compounding in China at present. The applicant researches and discovers that the combination of glufosinate-ammonium, haloxyfop-R-methyl and fluoroglycofen-ethyl has obvious synergistic technical effect under the condition of specific proportioning.

Disclosure of Invention

The invention provides a weeding composition which contains glufosinate-ammonium, haloxyfop-R-methyl and fluoroglycofen-ethyl and can be used for preventing and removing crop weeds.

A weeding composition is characterized by comprising glufosinate-ammonium, haloxyfop-R-methyl and fluoroglycofen-ethyl, wherein the weight ratio of the glufosinate-ammonium, the haloxyfop-R-methyl and the fluoroglycofen-ethyl is 15-40: 0.5-3: 1-3. The preferred weight ratio of glufosinate-ammonium, haloxyfop-R-methyl and fluoroglycofen-ethyl is 19.5: 1.5: 1.

The dosage form of the weeding composition is wettable powder, water dispersible granules, a suspending agent, missible oil and dispersible oil suspending agent. Preferable wettable powder and water dispersible granule.

The percentage content of the active ingredients of the weeding composition is 5-85%. The preferable percentage content of the active ingredients is 22 percent

The herbicidal composition is used for controlling annual weeds. Preferably, the weeds are uncultivated weeds such as goosegrass herb, barnyard grass, monochoria vaginalis, purslane and Convolvulus arvensis.

Compared with the prior art, the invention has the following beneficial effects:

when the mass ratio of the glufosinate-ammonium, the haloxyfop-R-methyl and the fluoroglycofen-ethyl is 39: 3: 2, the synergistic effect is realized on the barnyard grass. When the mass ratio of the glufosinate-ammonium, the haloxyfop-R-methyl and the fluoroglycofen-ethyl is 19.5: 1.5: 1, the synergistic effect is shown on the barnyard grass. The glufosinate-ammonium, the haloxyfop-R-methyl and the fluoroglycofen-ethyl have an average control effect of over 94 percent on the annual weeds of uncultivated land such as goosegrass, barnyard grass, monochoria vaginalis, purslane and Convolvulus arvensis. Can effectively reduce the dosage of active ingredients, improve the prevention and treatment effect and slow down the generation of drug resistance.

Detailed Description

The following detailed description of specific embodiments of the present invention is provided in conjunction with examples, but it should be understood that the scope of the present invention is not limited to the specific embodiments.

Example 1 indoor toxicity assay for Carex baccans Carex, haloxyfop-R-methyl and Fluoroglycofen-ethyl

The tested weeds: barnyard grass field collection laboratory culture preservation

The test method comprises the following steps: and (3) sowing barnyard grass seeds in the plastic pots, carrying out seedling and plant setting in the 2-leaf period, reserving 25 barnyard grass with consistent growth potential in each pot, and treating the barnyard grass when the barnyard grass grows to 3-4 leaf period. Preparing series of single agents with different concentrations and different mixture ratios, and spraying stem and leaf with a potter spraying device, wherein the treatment is repeated for 4 times. And (3) after treatment, placing the mixture in a greenhouse for normal management, regularly observing the growth condition of the barnyard grass, weighing the fresh weight of the overground part of the barnyard grass after 10 days, calculating the inhibition rate of the fresh weight, and evaluating the combined action type of the mixture of the three on the barnyard grass by adopting a Gowing method.

TABLE 1 indoor toxicity assay for barnyard grass with glufosinate, haloxyfop-R-methyl and fluoroglycofen-ethyl

As can be seen from Table 1, glufosinate-ammonium, haloxyfop-R-methyl and fluoroglycofen-ethyl show different combined effects on barnyard grass, and have synergistic and additive effects. When the mass ratio of the glufosinate-ammonium, the haloxyfop-R-methyl and the fluoroglycofen-ethyl is 39: 3: 2, the synergistic effect is shown on the barnyard grass, and the E-E0 is more than 10. Can effectively reduce the dosage of active ingredients and slow down the drug resistance of weeds.

Example 2 indoor toxicity assay of Glufosinate-ammonium, haloxyfop-R-methyl and fluoroglycofen-ethyl on goosegrass

The tested weeds: harrisonia perforata field collection laboratory culture and preservation

The test method comprises the following steps: and (3) sowing goosegrass seeds in the plastic pots, carrying out seedling and plant fixing in a 2-leaf period, keeping 25 goosegrass seeds with consistent growth vigor in each pot, and treating the goosegrass seeds until the goosegrass seeds grow to 3-4 leaf periods. Preparing series of single agents with different concentrations and different mixture ratios, and spraying stem and leaf with a potter spraying device, wherein the treatment is repeated for 4 times. And (3) placing the treated mixture in a greenhouse for normal management, regularly observing the growth condition of the goosegrass herb, weighing the fresh weight of the overground part of the goosegrass herb after 14 days, calculating the inhibition rate of the fresh weight, and evaluating the combined action type of the treated mixture on the goosegrass herb by adopting a Gowing method.

TABLE 1 indoor toxicity assay for Anoplophosphine, haloxyfop-R-methyl and fluoroglycofen-ethyl on goosegrass

As can be seen from Table 2, glufosinate-ammonium, haloxyfop-R-methyl and fluoroglycofen-ethyl show different combined effects on goosegrass, and synergistic and additive effects appear. When the mass ratio of the glufosinate-ammonium, the haloxyfop-R-methyl and the fluoroglycofen-ethyl is 19.5: 1.5: 1, the synergistic effect is shown on the barnyard grass, and the E-E0 is more than 10. Can effectively reduce the dosage of active ingredients and slow down the drug resistance of weeds.

Example 3 measurement of field controlling Effect of Glufosinate-ammonium, haloxyfop-R-methyl and fluoroglycofen-ethyl on non-cultivated land weeds

Test subjects: uncultivated weeds such as goosegrass, barnyard grass, monochoria vaginalis, purslane and Convolvulus arvensis annual weeds.

Test agents:

22% ammonium oxalate and high-efficiency fluorine-ethyl carboxyl wettable powder

19.5 percent of glufosinate-ammonium, 1.5 percent of haloxyfop-R-methyl, 1 percent of fluoroglycofen-ethyl, 4 percent of sodium lignosulfonate, 4 percent of sodium dodecyl sulfate, 5 percent of NNO, 3 percent of white carbon black and 100 percent of kaolin.

22% ammonium oxalate high-efficiency fluorine-ethyl carboxylic water dispersible granule

19.5 percent of glufosinate-ammonium, 1.5 percent of haloxyfop-R-methyl, 1 percent of fluoroglycofen-ethyl, 4 percent of sodium lignosulfonate, 8 percent of nekal, 4 percent of urea, 4 percent of sodium carboxymethylcellulose, 3 percent of white carbon black and 100 percent of kaolin.

The test method comprises the following steps: spraying stem and leaf. A random block arrangement was used, 50m2 per cell, repeated 4 times. Determining 5 survey points with a length of 0.5m2 per point in each district according to a checkerboard sampling method, surveying the control effect 21d after the drug, collecting the overground part of the weeds at each sampling point, and measuring the fresh quality of the overground part. Each treatment plot was compared with a control plot of clear water to evaluate the weed control effect of each agent treatment.

TABLE 3 determination of field control efficacy

As can be seen from Table 3, the glufosinate-ammonium, haloxyfop-R-methyl and fluoroglycofen-ethyl have an average control effect of over 94 percent on the annual weeds including uncultivated land, such as goosegrass, barnyard grass, monochoria vaginalis, purslane and Convolvulus arvensis. Can effectively reduce the dosage of active ingredients, improve the prevention and treatment effect and slow down the generation of drug resistance.

While the foregoing is directed to embodiments of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow.

Claims

1. A weeding composition is characterized by comprising glufosinate-ammonium, haloxyfop-R-methyl and fluoroglycofen-ethyl, wherein the weight ratio of the glufosinate-ammonium, the haloxyfop-R-methyl and the fluoroglycofen-ethyl is 15-40: 0.5-3: 1-3.

2. A herbicidal composition according to claim 1, characterized in that the weight ratio of glufosinate-ammonium, haloxyfop-R-methyl and fluoroglycofen-ethyl is 19.5: 1.5: 1.

3. A herbicidal composition according to any one of claims 1 to 2, wherein the herbicidal composition is in the form of wettable powder, water dispersible granule, suspension, emulsifiable concentrate, or dispersible oil suspension.

4. A herbicidal composition according to claim 3, characterized in that the percentage of active ingredients is 5% to 85%.

5. Use of the herbicidal composition according to any one of claims 1 to 4 for controlling annual weeds.

6. The use according to claim 5, wherein the weeds are the non-cultivated weeds Eleusine indica, Echinochloa crusgalli, Monochoria canadensis, Portulaca oleracea, Convolvulus arvensis.