CN113115782B

CN113115782B - Weeding composition containing sulfentrazone and fluoroglycofen-ethyl

Info

Publication number: CN113115782B
Application number: CN202110488642.0A
Authority: CN
Inventors: 朱怀铜; 汪云强; 黄永灿; 梅洪玲; 葛敏; 吴文静; 徐俊采
Original assignee: Anhui Huilong Group Yinshan Pharmaceutical Co ltd
Current assignee: Anhui Huilong Group Yinshan Pharmaceutical Co ltd
Priority date: 2021-04-30
Filing date: 2021-04-30
Publication date: 2022-04-08
Anticipated expiration: 2041-04-30
Also published as: CN113115782A

Abstract

The invention provides a weeding composition containing sulfentrazone and fluoroglycofen-ethyl, wherein the mass ratio of the sulfentrazone to the fluoroglycofen-ethyl is 30: 1-1: 15; is used for preventing and controlling weeds, such as crabgrass, amaranthus retroflexus, barnyard grass, eleusine indica and sedge, in the sugarcane field; the composition has obvious synergistic effect, can reduce the dosage of the medicament and slow down the generation of medicament resistance.

Description

Weeding composition containing sulfentrazone and fluoroglycofen-ethyl

Technical Field

The invention belongs to the field of herbicides, and particularly relates to a weeding composition containing sulfentrazone and fluoroglycofen-ethyl and application thereof.

Background

Sugarcane is a main sugar crop in China, and the sugar yield accounts for more than 90% of the total sugar yield. Besides sugar production, the byproducts of sugarcane, such as bagasse, sugarcane leaves, filter mud and waste liquid, can also be used as raw materials for preparing feed, paper, fuel, organic fertilizer, alcohol or fiber board and the like. The weeds in the sugarcane field can affect the yield and the quality of the sugarcane, and the yield of the sugarcane is reduced by 30% -70% when the sugarcane is seriously damaged. In recent years, the difficulty in preventing and removing the cyperaceae and part of gramineae weeds in the sugarcane field is high, and the trifloxysulfuron and halosulfuron-methyl stem and leaf treatment of the cyperaceae weeds has good prevention effect but single weeding effect. The stem and leaf treating agent has good weeding effect on gramineous weeds, but has great difference on the safety of different sugarcane varieties. The method for preventing and killing weeds in the sugarcane field by adopting the soil treatment agent before the seedlings after sowing has become an important chemical grass control method for the sugarcane field due to the characteristics of high efficiency, safety, economy and the like. In addition, with the long-term use of a single herbicide, the weed community in the sugarcane field is also continuously evolved, so that the grass phase in the sugarcane field is correspondingly changed, a large number of drug-resistant weeds which are difficult to prevent and control are generated, great economic loss is brought to local sugarcane farmers, the healthy development of the sucrose industry is seriously influenced, and the research and development and commercialization of novel herbicides become very important.

Sulfentrazone is a triazolinone herbicide, and can destroy cell membranes by inhibiting protoporphyrin oxidase in the synthesis process of chlorophyll, so that leaves can be rapidly dried and dead. The product is suitable for preventing and killing annual weeds in a newly planted sugarcane field, such as annual weeds of crab grass, Amaranthus retroflexus, Echinochloa stolonifera, goosegrass herb, Gynura procumbens, alternanthera philoxeroides, Cyperus rotundus, Chenopodium quinoa, ageratum and the like.

Fluoroglycofen-ethyl is a diphenyl ether herbicide. After being absorbed by plants, protoporphyrin oxidase is inhibited to generate tetrapyrrole with toxicity to plant cells, and the tetrapyrrole is accumulated to act, so that weeds are killed, and annual broadleaf weeds can be effectively prevented and removed.

Disclosure of Invention

The invention relates to a weeding composition containing sulfentrazone and fluoroglycofen-ethyl. The specific technical scheme is as follows:

a weeding composition containing sulfentrazone and fluoroglycofen-ethyl comprises the active ingredients of the sulfentrazone and the fluoroglycofen-ethyl in a mass ratio of 30: 1-1: 15. The mass ratio of the sulfentrazone to the fluoroglycofen-ethyl in the weeding composition is 20: 1-1: 1. The mass ratio of the sulfentrazone to the fluoroglycofen-ethyl in the weeding composition is 15: 1-10: 1.

The weeding composition also comprises an agriculturally acceptable auxiliary material component; the weight percentage of the active ingredients is 5-75%.

The preparation of the composition is suspending agent, wettable powder, water dispersible granule, oil suspending agent, granule and microemulsion.

The weeding composition is used for preventing and controlling weeds in a sugarcane field. Preferably, the weeds are crabgrass, redroot pigweed, barnyard grass, goosegrass herb and nutgrass flatsedge.

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

the sulfentrazone and fluoroglycofen-ethyl compound show different combined effects on the amaranthus retroflexus. Wherein the ratio of the sulfentrazone to the fluoroglycofen-ethyl is 20: 1-1: 1 shows a synergistic effect; after the sulfentrazone and the fluoroglycofen-ethyl are used in combination, the using dosage of active ingredients can be reduced, and the generation of drug resistance can be slowed down. The sulfentrazone and fluoroglycofen-ethyl compound has excellent control effect on weeds including crabgrass, redroot amaranth, barnyard grass, goosegrass herb and nutgrass flatsedge in a sugarcane field; the sugarcane is safe for field observation.

Detailed Description

The invention will be better understood from the following examples. However, those skilled in the art will readily appreciate that the description of the embodiments is only for illustrating the present invention and should not be taken as limiting the invention as detailed in the claims.

Example 1: indoor toxicity determination method for herbicide amaranthus retroflexus

The tested weeds: amaranthus retroflexus seeds collected from the test field of the company and stored for later use

Reagent to be tested: sulfentrazone and fluoroglycofen-ethyl, which are purchased in the market.

The test method comprises the following steps: accurately weighing a certain amount of original medicine, dissolving with a small amount of acetone, preparing mother liquor with 0.1% Tween 80 aqueous solution, and diluting to the concentration required by the test. A blank was made of 0.1% tween 80 in water without drug.

A greenhouse potting method is adopted. The test weed seeds are subjected to germination accelerating treatment, and seeds with full seeds and similar sizes are selected for sowing after embryo of the seeds is exposed to white. Quantitatively loading the fine soil which is aired, sieved and uniformly mixed into a pot 4/5, and then maintaining the soil humidity in a manner of permeating from the bottom of the pot to ensure that the soil is fully wet and reaches a saturated state. Quantitatively sowing the treated weed seeds, uniformly sowing 30 seeds in each pot on the soil surface, covering with fine soil of 0.5-1.0cm, and repeating for 4 times. Soil was sprayed with a Potter spray tower on the 2 nd day after sowing (pressure of the Potter spray tower was adjusted and spraying was carried out from low concentration to high concentration according to a concentration gradient designed in advance in the test). After treatment, the culture medium is placed in a greenhouse for culture, and the temperature is 22-33 ℃ and the relative humidity is 68-85% during the test period. The overground part of the weeds is cut off at 21 days after the application of the herbicide, the fresh weight is weighed, and the fresh weight inhibition rate is calculated.

TABLE 1 indoor toxicity assay of sulfentrazone and fluoroglycofen-ethyl paired weed Amaranthus retroflexus

And (4) analyzing results: the sulfentrazone and fluoroglycofen-ethyl compound show different combined effects on the amaranthus retroflexus. Wherein the proportion of the sulfentrazone and the fluoroglycofen-ethyl is 20: 1-1: 1 shows a synergistic effect. The proportion of the sulfentrazone and the fluoroglycofen-ethyl is 30: 1. 1: 10. 1: 15 exhibits an additive effect; after the sulfentrazone and the fluoroglycofen-ethyl are used in combination, the using dosage of active ingredients can be reduced, and the generation of drug resistance can be slowed down.

Example 2 field efficacy assay of sulfentrazone and fluoroglycofen-ethyl in the field of sugarcane weeds

Testing the medicament:

agent 1: 33% of sulfentrazone and fluoroglycofen-ethyl wettable powder; the formula is as follows: 30% of sulfentrazone, 3% of fluoroglycofen-ethyl, 4% of calcium lignosulphonate, 4% of sodium dodecyl sulfate, 03% of NN, 2% of white carbon black and 100% of kaolin.

Medicament 2: 48 percent of sulfentrazone and fluoroglycofen-ethyl water dispersible granules; the formula is as follows: 45 percent of sulfentrazone, 3 percent of fluoroglycofen-ethyl, 8 percent of sodium dodecyl sulfate, NN05 percent, 4 percent of ammonium sulfate, 2 percent of sodium carboxymethyl cellulose, 4 percent of white carbon black and bentonite for making up 100 percent.

Agent 3: 24% sulfentrazone-fluoroglycofen suspension; the formula is as follows: 12% of sulfentrazone, 12% of fluoroglycofen-ethyl, 3% of sodium dodecyl sulfate, 6% of lignosulfonate, 6002% of agricultural milk, 3% of xanthan gum, 2% of ethylene glycol, 1% of sodium benzoate, 1.5% of bentonite and deionized water for making up 100%.

Testing of weed species: weeds in a sugarcane field: crab grass, redroot amaranth, barnyard grass, goosegrass herb and nutgrass flatsedge;

the test method comprises the following steps: setting 3 medicament treatments, 1 blank control and repeating for 4 times; and (4) randomly arranging. And (4) carrying out soil spraying treatment by adopting a sprayer. And (5) investigating the weed fresh weight control effect 21d after the application.

TABLE 3 field efficacy assay of sulfentrazone and fluoroglycofen-ethyl in the field of sugarcane weeds

And (4) analyzing results: the sulfentrazone and fluoroglycofen-ethyl compound has excellent control effect on weeds including crabgrass, redroot amaranth, barnyard grass, goosegrass herb and nutgrass flatsedge in a sugarcane field; the dosage of the active ingredients of the medicaments 1 and 2 is respectively 35 ga.i./mu and 30 ga.i./mu, the control effect is 95.80 percent and 91.45 percent; the control effect of the medicament 3 when the dosage of the active ingredients is 14 ga.i./mu is 92.71%. The sugarcane is safe for field observation.

The foregoing is only a preferred embodiment of the present invention, and it will be apparent to those skilled in the art that modifications may be made without departing from the invention as claimed in the invention and these modifications are within the scope of the invention.

Claims

1. A weeding composition containing sulfentrazone and fluoroglycofen-ethyl is characterized in that active ingredients comprise sulfentrazone and fluoroglycofen-ethyl, and the mass ratio of the sulfentrazone to the fluoroglycofen-ethyl is 15: 1-10: 1.

2. A herbicidal composition according to claim 1, characterized by further comprising agriculturally acceptable adjuvant ingredients; the weight percentage of the active ingredients is 5-75%.

3. A herbicidal composition according to claim 2, characterized in that the composition is formulated as a suspension, wettable powder, water dispersible granule, oil suspendable agent, granule, microemulsion.

4. Use of the herbicidal composition according to any one of claims 1 to 3 for controlling weeds in sugarcane fields.

5. Use according to claim 4, wherein the weeds are crabgrass, redroot pigweed, barnyard grass, goosegrass, sedge.