CN113057163A

CN113057163A - Herbicide composition containing sethoxydim and sulfentrazone and applied to soybean and peanut fields

Info

Publication number: CN113057163A
Application number: CN202010002068.9A
Authority: CN
Inventors: 高兴祥; 李美; 李健; 房锋
Original assignee: Institute of Plant Protection Shandong Academy of Agricultural Sciences
Current assignee: Institute of Plant Protection Shandong Academy of Agricultural Sciences
Priority date: 2020-01-02
Filing date: 2020-01-02
Publication date: 2021-07-02

Abstract

The invention belongs to the technical field of pesticide herbicides, and provides a herbicide composition containing sethoxydim and sulfentrazone, wherein the weight ratio range of the sethoxydim to the sulfentrazone is 1:0.1875-1: 12. The herbicide composition provided by the invention is used for preventing and killing annual weeds such as cockspur grass, crab grass, rice grass, abutilon and the like in soybean and peanut fields, and has good synergistic action or addition action. The invention expands the weed control spectrum, enhances the control effect, effectively complements the quick action and the persistence, avoids the rapid occurrence of weed resistance caused by using a single herbicide to prevent and kill off, delays the occurrence of weed drug resistance, reduces the dosage, reduces the use cost and lightens the environmental pollution.

Description

Herbicide composition containing sethoxydim and sulfentrazone and applied to soybean and peanut fields

Technical Field

The invention belongs to the technical field of pesticide herbicides, and particularly relates to a herbicide composition containing sethoxydim and sulfentrazone.

Background

Soybean is one of the important grain crops in China, has been cultivated for five thousand years, is called Shushu in ancient times, and is a crop with seeds containing rich plant protein, wherein northeast China is the main production area. Soybeans are most commonly used for making various bean products, extracting soybean oil, brewing soy sauce, and extracting proteins. Peanuts are mainly distributed in provinces (districts) such as Liaoning, Shandong, Hebei, Henan, Jiangsu, Fujian, Guangdong, Guangxi, Sichuan and Jilin. Wherein the Shandong province has the largest planting area and the largest yield. The peanut is a raw material for producing edible vegetable oil, the oil extracted from peanut kernel is transparent, light yellow and aromatic, and the seed contains 40-50% of fatty oil, 20-30% of nitrogen-containing substance, 8-21% of starch, 2-5% of cellulose, 5-8% of water, 2-4% of ash, vitamins and the like. The peanut can also be processed into non-staple food. The weeds in the soybean and peanut fields are various, the growth is fast, and weeds are easy to form, and the main weeds in the soybean and peanut fields comprise crab grass, goosegrass herb, rice grass, piemarker, cockspur grass, purslane, redroot amaranth, field bindweed, chenopodium album, teff, green dog tail, cyperus rotundus, acalypha australis, black nightshade and the like. The grass damage seriously threatens the normal growth of the soybeans and the peanuts and is an important obstacle for restricting the high, stable and high yield of the soybeans and the peanuts. The weeds compete for water, nutrients, illumination and space with the soybeans and the peanuts, so that the growth environment of the soybeans and the peanuts is deteriorated, and the normal growth of the soybeans and the peanuts in the seedling stage is influenced. In general years, the yield of the soybeans and the peanuts can be reduced by 1-2 due to the harm of the weeds, and the yield can be reduced by 3-5 in severe cases. The weed control in soybean and peanut fields is an important link in the production of soybean and peanut.

The herbicide is a common measure for preventing and controlling weeds in soybean and peanut fields at present, and plays an important role in promoting the yield of soybean and peanut to be improved and saving the planting cost. However, the herbicide is popularized and applied in a large area for a long time, so that the problems of weed resistance, population succession and phytotoxicity existing in the chemical prevention and removal of farmland weeds are gradually serious, and the high yield and harvest of soybeans and peanuts and the safety of afterreap crops are seriously influenced. The long-term use of a single herbicide for preventing and killing can cause the number of sensitive weeds to be reduced, the number of insensitive or malignant weeds to be increased, the weed community is changed, and the harvest of the soybean and peanut crop yield is seriously influenced.

Sulfentrazone, the English name Sulfentrazone, the alias N- (2, 4-dichoro-5- (4- (difluoromethyl) -4, 5-dihydo-3-methyl-5-oxo-1H-1, 2,4-triazol-1-yl) phenyl) methanesulfonamide, the product name N- (2,4-Dichloro-5- (4-difluoromethyl-4, 5-dihydro-3-methyl-5-oxo-1H-1,2,4-triazol-1-yl) phenyl) methanesulfonamide, the molecular formula C₁₁H₁₀C_l2F₂N₄O₃S, molecular weight 387.19, CAS registry No. 122836-35-5. Belongs to a low-toxicity weed removing agent. Raw medicine rat acute oral LD50>2855 mg/kg, and LC504.14 mg/l by acute inhalation, the medicine has slight irritation to rabbit skin, irritation to rabbit eye, and low toxicity to fish. Belongs to protoporphyrinogen oxidase inhibitors. By inhibiting protoporphyrinogen oxidase, excessive protoporphyrin IX, which is a photosensitizer and causes active oxygen to be generated in the plant cell, finally causes the cell membrane, the tonoplast membrane and the like to be broken, the intracellular solute to be exuded and dried up and dead. The half-life period of the soil is 110 + 280 days, and the stem and leaf treatment and the soil treatment can be performed. Is suitable for preventing and treating 1-year-old broadleaf weeds, grassy weeds, sedges and the like in fields such as soybeans, peanuts, sorghum, soybeans, peanuts and the like, such as morning glories, amaranthus retroflexus, quinoa, stramonium, crab grass, green bristlegrass, eleusine indica, cyperus rotundus and the like.

Sethoxydim, the chinese alias: nacaojing, ethametrydine, sethoxydim in acetone, 2- [1- (ethoxyimino) butyl]-5- (2-ethylthio) propyl) -3-hydroxy-2-cyclohexen-1-one, the English alias: 2- [1- (ethoxyyimino) butyl]-5-[2-(ethylthio)propyl]-3-hydroxy-2-cyclohexen-1-one;Sethoxydim;(5RS)-2-[(EZ)-1-(ethoxyimino)butyl]-5-[(2RS)-2-(ethylthio)propyl]-3-Hydroxycyclohex-2-en-1-one, Cyethoydim, Tritex-extra, molecular formula C₁₇H₂₉NO₃S; molecular weight 327.48; CASNO 74051-80-2. The herbicide is mitotic inhibitor, has high activity to gramineous weeds and is safe and ineffective to broad-leaved weeds. The sethoxydim is a systemic conductive stem and leaf treating agent with strong selectivity, can be quickly absorbed by stem and leaf of gramineous weeds, and can be conducted to apical and internode meristems, so that cell division is destroyed and death is realized. The drug-receiving plant begins to necrose from the growing point and the internode meristem, stops growing after 3 days, and fades or has anthocyanin color after 7 days, and the whole plant dies after 2-3 weeks. The sethoxydim has strong conductivity and can be applied during the tillering period of 2 leaves to 2 tillers of the gramineous weeds. The rainfall does not affect the efficacy basically. Can be used for preventing and killing barnyard grass, wild oat, green bristlegrass herb, alopecurus, crab grass, goosegrass herb and the like, and has no effect on broadleaf weeds. The imperata and creeping can be prevented and removed by properly increasing the dosageWheatgrass, bermudagrass, and the like. For example, 10-20 mL/100m of 20% missible oil is respectively used for preventing and controlling weeds in soybean and cotton fields²And 8-15 mL/100m²Spraying water or using 10-15 mL/100m of 5% engine oil missible oil²Spraying water. In the pesticide liquid of the sprayed sethoxydim, 0.1 percent of nonionic surfactant or 0.2 percent of common neutral washing powder is added, which can obviously improve the weeding effect. The application time is good in the morning and evening, and the medicine is not suitable for spraying at noon or in high temperature.

The development of new herbicides is expensive and has long period, and compared with the development and research of efficient, low-toxicity and low-residue compounding and mixing, the method has the advantages of low investment and short development period. The reasonable compounding or mixing of the chemical herbicide has the advantages of expanding a weed control spectrum, improving the control effect, prolonging the pesticide application period, reducing the dosage, reducing the risk of phytotoxicity, reducing residues, delaying the occurrence and development of drug resistance and drug resistance of weeds and the like, so that the selection of the proper compounding or mixing of the herbicide is one of the most effective and economical methods for solving the problems; however, because the action mechanism between pesticide blending is complex, whether the synergy is influenced by various factors after combination is verified only by depending on experimental results, and the expectation cannot be carried out.

Disclosure of Invention

In order to solve the defects in the prior art, the invention provides a herbicide composition containing sethoxydim and sulfentrazone.

The invention is realized by the following technical scheme:

the invention provides a herbicide composition containing sethoxydim and sulfentrazone, wherein the weight ratio of the sethoxydim to the sulfentrazone is 1:0.1875-1: 12.

Preferably, the weight ratio of the sethoxydim to the sulfentrazone is in the range of 1:0.75-1: 3.

More preferably, the weight ratio of the sethoxydim to the sulfentrazone is in the range of 1:1-1: 3. .

More preferably, the weight ratio of the sethoxydim to the sulfentrazone is 1:1, 1:2 and 1: 3.

The herbicide composition preparation is an acceptable pesticide formulation such as missible oil, water suspending agent, oil suspending agent, wettable powder, granules or water dispersible granules.

The herbicide composition is used for preventing and killing cockspur grass, crab grass, rice grass and abutilon in soybean and peanut fields.

The invention has the beneficial effects that:

1. the herbicide has broad herbicide controlling spectrum and effective complementation between quick acting property and lasting effect. After the sethoxydim and the sulfentrazone are compounded, the weed control spectrum advantages are complementary, the herbicide has good effects on broad-leaved weeds and grassy weeds in soybean and peanut fields, and the quick-acting property and the lasting effect are both excellent.

2. The control effect is enhanced. After the sethoxydim and the sulfentrazone are compounded, the interaction type is addition action, and the synergistic effect is realized, the control effect is enhanced, and the effect is better than that of single use.

3. The method avoids the rapid occurrence of weed resistance caused by using a single herbicide for preventing and killing, and delays the occurrence of weed resistance.

4. The dosage is reduced, the use cost is reduced, and the environmental pollution is reduced.

Detailed Description

The present invention is further illustrated by the following detailed description, but is not to be construed as being limited to the examples.

The method for preparing the water suspending agent by the sethoxydim and the sulfentrazone is as follows: the test agents were 95% sethoxydim technical material and 91% sulfentrazone technical material. Quantitative raw medicines of sethoxydim and sulfentrazone are respectively weighed by an electronic balance, a special emulsifier is added for dissolving, then 2 times of N, N-dimethylformamide is added until the raw medicines are completely dissolved, and a 0.1% Tween-80 aqueous solution is used for diluting into 1% mother liquor for later use.

Sethoxydim is 25, 50, 100, 200 ga.i./ha, and sulfentrazone is 37.5, 75, 150, 300 ga.i./ha. The different dosages of each medicament are mixed two by two to obtain different mixed dosages.

Example 1 indoor formulation screening

First, test conditions

The weeds to be tested are cockspur grass, large crabgrass, rice grass and abutilon. And (3) culturing the test material in a glass greenhouse at the temperature of 25-35 ℃ and naturally illuminating. Sowing quantitative cockspur grass, crab grass, rice bag grass and abutilon seeds in a plastic basin with the diameter of 9 cm, covering soil for 1-2 mm, putting the plastic basin into an enamel tray filled with water, allowing the water to gradually permeate into the enamel tray, and transferring the enamel tray into an artificial climate chamber for standby application after the water permeates into the soil surface.

And (3) regularly supplementing water in a bottom infiltrating irrigation mode to keep the soil humidity except that the water cannot be watered 1-2 days after the pesticide is sprayed.

Second, design of experiment

The test agents were 95% sethoxydim technical material and 91% sulfentrazone technical material. Quantitative raw medicines of sethoxydim and sulfentrazone are respectively weighed by an electronic balance, a special emulsifier is added for dissolving, then 2 times of N, N-dimethylformamide is added until the raw medicines are completely dissolved, and a 0.1% Tween-80 aqueous solution is used for diluting into 1% mother liquor for later use.

The test is carried out on stems and leaves of crabgrass and cockspur grass at the 2-leaf 1-heart stage, piemarker at the 2-needle-leaf stage and scabrous grass at the 2-4-leaf stage by uniform spraying treatment.

The ASS-4 type automatic control spraying system and the fan-shaped spray head are adopted to combine the pressure, the flow rate and the like of the spray head to spray the medicine according to the actual spraying area (1.1 m)²) Spraying 50 mL of liquid medicine (the water consumption is 30L per mu), adjusting the running speed, uniformly arranging the plastic pots to be treated on a spraying table, and uniformly spraying. The spraying pressure is 0.4 MPa, and the flow of the fan-shaped spray head is 800 mL/min. Spraying from low amount to high amount. Each treatment was repeated 4 times.

Thirdly, calculating test results

The combination effect pattern after mixing was evaluated by the Gowing method.

The theoretical prevention effect calculation formula of the Gowing method is as follows:

wherein X, Y is the actual measurement preventing value (%) of two single agents, E is the actual measurement preventing value (%) of different mixture ratios, and E is the actual measurement preventing value (%) of two single agents₀Is the theoretical proof value (%). When E-E₀Addition between-5 and 5, E-E₀>5 hours is synergistic, E-E₀<Antagonism is observed at-5.

TABLE 1 indoor determination of blending and combining effect of sethoxydim and sulfentrazone-Gowing method

Test results show that the sethoxydim has excellent effect on grass weeds, large crabgrass and cockspur grass, and is ineffective on broad-leaved weeds, small clubmoss and piemarker, and the medicament has excellent effect on grass weeds, but slow action speed; the other one has excellent effect on broad-leaved weeds such as abutilon, rice-breaded grass and barnyard grass, but has poor effect on the other one, namely crabgrass which is a gramineous weed, and the other one has the advantages that the action speed is high, and weeds begin to dry up and die after 2 days after application.

After the sethoxydim and the sulfentrazone are compounded, the quick-acting performance and the lasting performance are complementary and good, the sethoxydim, the large crabgrass, the small meadow grass and the piemarker have good effects, the compounding effect is obvious synergistic effect, and the sethoxydim is recommended to be compounded with 100-200 g of a.i./ha and 150-300 g of the sulfentrazone, namely the sethoxydim: the mass ratio of sulfentrazone is 1: 0.75-3.

Example 2 field Effect measurement

First, test conditions

Selection of crops and cultivars: the soybean is of the variety Qihuang 28, and is sown 6 months and 5 days in 2018.

Selection of weeds for test subjects: barnyard grass, crab grass, green bristlegrass herb and purslane.

The cultivation conditions are as follows:

the experimental soybean field was established in Zhang Ma Tun village in the historic city of Jinan, Shandong province. The test field is loam, the organic matter content is about 1.8 percent, and the pH value is 7.1. The weeds in the test field are uniformly distributed, so that no other herbicide is applied in the whole test period; no disease and pest are generated during application, and in addition, the controlled release fertilizer is used during soybean sowing.

The test terrain is smooth, the management is consistent, and the fertility and the water pouring conditions are good.

Wheat is planted in the previous crop of the test field, and the herbicide is 2-methyl-4-chloro-carfentrazone-ethyl.

Second, design of experiment

(I) test agent

12.5 percent of sethoxydim emulsifiable concentrate, 40 percent of sulfentrazone suspending agent and 30 percent of sethoxydim suspending agent (3 proportions are recommended to design through indoor experiments to prepare the 30 percent of sethoxydim suspending agent, and the sethoxydim and the sulfentrazone are 1:1, 1:2 and 1:3 respectively).

(II) method of use

The spraying apparatus was a better than high-grade knapsack sprayer, and the treatments were sprayed evenly by adding 450 liters of water per hectare. And (3) uniformly spraying stems and leaves of annual weeds in the soybean field in the 2-5 leaf period.

(III) the time and frequency of application

The test was carried out in 2018 on day 6 and 17, with a total of one application. When the pesticide is applied, 1-2 rounds of compound leaves of the soybeans grow well; in the 2-5 leaf stage of field weeds, barnyard grass, crab grass, green bristlegrass herb and purslane are taken as main materials.

(IV) drug efficacy calculation method

Calculating the formula:

230% of dimethenamid suspending agent applied to soybean field effect determination (30 d investigation after pesticide application)

Test results show that the 12.5% sethoxydim emulsifiable concentrate has excellent effect on gramineous weeds, large crabgrass, barnyard grass and green bristlegrass and is ineffective on broadleaf weeds, namely the purslane, but the pesticide has slow action speed on the gramineous weeds and shows effect after 5 days after application; the 40% sulfentrazone suspending agent has better effect on the grassy weeds of barnyard grass, green bristlegrass and broad-leaved weed purslane, and has poor effect on the other grassy weed of large crabgrass, but the agent has the greatest advantage of high action speed, and the weeds begin to dry and die after the agent is applied.

The two compound preparations are 30% of the suspension agent containing the penoxsulam, integrates the advantages of two single agents, has excellent quick acting performance and persistence, has complementary advantages of a weed control spectrum, has good effects on gramineous weeds such as barnyard grass, large crabgrass, green bristlegrass and broad-leaved weeds such as purslane in test fields, and has 3 proportions better than the two single agents.

30 percent of the suspension agent of the penoxsulam is safe to the soybeans.

Example 3 field Effect measurement

(I) test conditions

Selection of crops and cultivars:

the peanut is bred in No. 22, and is sowed in 2018, 5 months and 7 days.

Selection of weeds for test subjects:

green bristlegrass herb, cockspur grass, abutilon, redroot amaranth.

The cultivation conditions are as follows:

the experimental peanut field is arranged in the Taiping base of Jiyang county of Jinan city, Shandong province. The test field is loam, the organic matter content is about 1.3 percent, and the pH value is 7.6. The weeds were evenly distributed in the test field so no other herbicide was applied throughout the test period.

The previous stubble of the test field is empty.

(II) design of the test

Test agents: 12.5 percent of sethoxydim suspending agent, 40 percent of sulfentrazone suspending agent and 30 percent of sethoxydim suspending agent (3 proportions are recommended to design through indoor experiments to prepare the 30 percent of sethoxydim suspending agent, and the sethoxydim and the sulfentrazone are 1:1, 1:2 and 1:3 respectively).

The using method comprises the following steps: the spraying apparatus was a better than high-grade knapsack sprayer, and the treatments were sprayed evenly by adding 450 liters of water per hectare. And (3) uniformly spraying stems and leaves of annual weeds in the peanut field in the 2-5 leaf period.

Time and frequency of application: the test was performed in 2018 on day 27, 5 months, with one total administration. The peanut is subjected to leaf multiplication in 1-2 rounds during pesticide application.

Third, the calculation method of the drug effect

Calculating the formula:

determination of effect of 330% of dimethenamid suspension agent applied to peanut field (investigation 25d after pesticide application)

Test results show that the 12.5 percent sethoxydim emulsifiable concentrate only prevents and removes gramineous weeds, has good effect on gramineous weeds such as barnyard grass and green bristlegrass, but has slow action speed, and gramineous weeds begin to yellow 5 days after the application and then gradually die; the 40% sulfentrazone suspending agent has better effect on various weeds, and the agent has the greatest advantage of high action speed. The two compound preparations are 30% of the suspension agent containing the penoxsulam, integrates the advantages of two single agents, has good quick-acting performance and persistence, has good effects on broad-leaved weeds, abutilon, Amaranthus retroflexus, gramineous weeds, green bristlegrass and barnyard grass, and 3 mixture ratios are far better than the two single agents. 30 percent of the dimethenamid suspension is safe to peanuts.

The foregoing is only a preferred embodiment of this patent, and it should be noted that, for those skilled in the art, it would be obvious to those skilled in the art that various modifications and substitutions can be made without departing from the technical principle of this patent, such as adding herbicide such as atrazine or terbuthylazine, and these modifications and substitutions should be considered as the protection scope of this patent.

Claims

1. A herbicide composition containing sethoxydim and sulfentrazone is characterized in that: the weight ratio of the sethoxydim to the sulfentrazone is 1:0.1875-1: 12.

2. A herbicidal composition containing sethoxydim and sulfentrazone according to claim 1, wherein: the weight ratio of the sethoxydim to the sulfentrazone is 1:0.75-1: 3.

3. A herbicidal composition containing sethoxydim and sulfentrazone according to claim 2, wherein: the weight ratio range of the sethoxydim to the sulfentrazone is 1:1-1: 3.

4. A herbicidal composition containing sethoxydim and sulfentrazone according to claim 2, wherein: the weight ratio of the sethoxydim to the sulfentrazone is 1:1, 1:2 and 1: 3.

5. A herbicidal composition containing sethoxydim and sulfentrazone according to any one of claims 1 to 4, characterized in that: the herbicide composition preparation is an acceptable pesticide formulation of missible oil, aqueous suspension, oil suspension, wettable powder, granules or water dispersible granules.

6. A herbicidal composition containing sethoxydim and sulfentrazone according to any one of claims 1 to 4, characterized in that: the herbicide composition is used for preventing and killing weeds such as cockspur grass, crab grass, rice grass and abutilon in soybean and peanut fields.