CN110074131A - A kind of Herbicidal combinations and its application containing glyphosate isopropyl amine salt, 2,4- drop acid and hexazinone - Google Patents

Abstract

The invention relates to a herbicidal composition containing glyphosate isopropylamine salt, 2,4-dioxic acid and hexazinone, which belongs to the technical field of compound pesticides. The herbicidal composition comprises glyphosate isopropylamine in parts by mass 30‑50 parts of salt, 5‑10 parts of 2,4‑Dichloric acid, 10‑15 parts of hexazinone, 0.1‑1 part of emulsifier and 35‑45 parts of solvent. The present invention also provides the application of the above herbicidal composition in non-arable land weeding. The herbicidal composition provided by the invention has the advantages of synergistically improved herbicidal activity, improved quick-acting effect and aging period.

Description

A herbicidal composition containing glyphosate isopropylamine salt, 2,4-D acid and hexazinone and its application

technical field

The invention relates to the technical field of compound pesticides, more specifically, it relates to a herbicidal composition containing glyphosate isopropylamine salt, 2,4-Dyric acid and hexazinone.

Background technique

The effectiveness of herbicides depends on the type of herbicide used, the rate of application, the formulation, the harmful plants controlled in the specific practice, climate and soil conditions, and so on. A further criterion is the persistence or rate of degradation of the herbicide. Changes in the susceptibility of harmful plants to active substances that may occur during prolonged use or use in specific geographical areas also need to be taken into account. This change represents a more or less pronounced loss of herbicide activity and can only be compensated to a limited extent by higher herbicide application rates.

Due to the large number of possible influencing factors, practically no single active substance has all the properties required for the different requirements, especially for harmful vegetation species and climatic zones. Furthermore, obtaining the desired effect with lower and lower herbicide application rates is a constantly sought-after goal. Lower application rates not only reduce the amount of active substance required, but generally also reduce the amount of auxiliaries required. The reduction of both reduces economic costs and improves the ecological compatibility of herbicide treatments.

A common approach used to enhance the utilization of herbicides is to combine the active substance with one or more other active substances which provide additional desired properties. However, when two or more active substances are administered in admixture, physical and biological incompatibility phenomena are not uncommon, such as insufficient stability of the mixed formulation, decomposition of the active substances or resistance of the active substances. On the contrary, what is currently desired is a composition of the active substances which has an advantageous mode of activity, a high stability and, where possible, a synergistically increased activity which allows a reduction in the application rates compared to the application of the active substances alone.

SUMMARY OF THE INVENTION

In view of the deficiencies in the prior art, the object of the present invention is to provide a herbicidal composition containing glyphosate isopropylamine salt, 2,4-dipic acid and hexazinone, which has synergistically improved herbicidal activity, improved quick-acting Advantages of sex and limitation period.

The above-mentioned technical purpose of the present invention is achieved through the following technical solutions:

A herbicidal composition containing glyphosate isopropylamine salt, 2,4-D acid and hexazinone, comprising 30-50 parts by mass of glyphosate isopropylamine salt, 2,4-D acid 5 -10 parts, 10-15 parts of hexazinone, 0.1-1 parts of emulsifier and 35-45 parts of solvent.

Further, the weight ratio of the glyphosate isopropylamine salt, 2,4-D acid and hexazinone is 41:7.2:12.5.

Further, the emulsifier is a nonionic surfactant or/and anionic surfactant.

Further, the non-ionic surfactant is alkylphenol polyoxyethylene ether formaldehyde condensate, styrene ethylphenol polyoxyethylene ether formaldehyde condensate, cumylphenol polyoxyethylene ether formaldehyde condensate, benzylphenol polyoxyethylene ether formaldehyde condensate, At least one of oxyethylene ether formaldehyde condensate, the anionic surfactant is polyacrylic acid, sodium polyacrylate, polyacrylamide, alkylphenol polyoxyethylene ether formaldehyde condensate sulfate, alkylnaphthalene sulfonic acid formaldehyde condensation phenol sulfonic acid naphthalene sulfonic acid formaldehyde condensate sodium salt, phenol formaldehyde condensate sulfonic acid sodium salt, phenol-urea-formaldehyde condensate sulfonate, carboxymethyl cellulose, xanthan gum, sodium lignin sulfonate , desugared sodium lignosulfonate, and desugared condensed sodium lignosulfonate.

Further, the solvent is toluene, xylene, naphtha, acetone, methyl ethyl ketone, cyclohexanone, trichloroethylene, perchlorethylene, ethyl acetate, amyl acetate, butyl acetate, Propylene glycol monomethyl ether and ethylene glycol monomethyl ether, methyl alcohol, ethyl alcohol, isopropyl alcohol, amyl alcohol, ethylene glycol, propylene glycol, glycerin, N-methyl-2-pyrrolidone, N, At least one of N-dimethylalkylamide and dimethylsulfoxide.

Further, the herbicidal composition also includes 0.1-1 parts by weight of polymer I; the polymer I is prepared by the following method: comprising 3,7,12,17-tetramethyl in a weight ratio of 1:1.5-2 -8,13-divinyl-2,18-porphindipropionic acid and 2,2-(vinyldioxy)diethylamine in triethylamine, N,N-diisopropylcarbodiimide React with a polar organic solvent at a temperature of 0-5°C for 20-30 hours to obtain pre-product A; in an inert atmosphere, contain pre-product A and ε-hexyl in a weight ratio of 1:20-25 The ester mixture is reacted for 40-50 hours in the presence of a catalyst at a temperature of 120-140°C, and purified to obtain a pre-product B; a mixture of pre-product B and succinic anhydride in a weight ratio of 9-11:1 in triethylamine 1. In the presence of a polar organic solvent, react at a temperature of 20-30° C. for 10-15 hours, and purify to obtain the polymer I.

Further, the catalyst is selected from stannous octoate.

Further, the herbicidal composition is a water dispersible agent.

The object of the present invention is also to provide an application of a herbicidal composition containing glyphosate isopropylamine salt, 2,4-dioic acid and hexazinone in non-cultivated land weeding.

In summary, the present invention has the following beneficial effects:

First, the herbicidal effect of glyphosate isopropylamine salt, 2,4-dioic acid and hexazinone in the herbicidal composition of the present invention has a synergistic effect on preventing and controlling non-arable land weeds, which not only improves the herbicidal effect of preventing and controlling non-arable land weeds Efficiency, and improve the quick effect of weed control in non-cultivated land.

Second, the polymer I provided by the present invention does not have any herbicidal activity, but the polymer I can synergize the herbicidal activity of the herbicidal composition containing glyphosate isopropylamine salt, 2,4-dipic acid and hexazinone. This is because polymer I can form stable micelles, and glyphosate isopropylamine salt, 2,4-D acid and hexazinone are distributed in the micelles, which enhances glyphosate isopropylamine salt, 2,4-D The stability of acid and hexazinone, thereby synergizing the herbicidal activity of the herbicidal composition containing glyphosate isopropylamine salt, 2,4-D acid and hexazinone.

Detailed ways

The present invention is described in further detail below in conjunction with embodiment. It should be understood that the preparation methods described in the examples of the present invention are only used to illustrate the present invention, rather than limit the present invention, and under the premise of the concept of the present invention, simple improvements to the preparation methods of the present invention all belong to the scope of protection of the present invention .

Example 1

The herbicidal composition comprises 30 g of glyphosate isopropylamine salt, 10 g of 2,4-dioxic acid, 15 g of hexazinone, 1 g of alkylphenol polyoxyethylene ether formaldehyde condensate (Nongru No. 700) and 35 g of xylene.

Example 2

The herbicidal composition comprises 41 g of glyphosate isopropylamine salt, 7.2 g of 2,4-dioic acid, 12.5 g of hexazinone, 0.4 g of alkylphenol polyoxyethylene ether formaldehyde condensate (Nongru No. 700) and 40 g of xylene.

Example 3

The herbicidal composition includes 50g of glyphosate isopropylamine salt, 5g of 2,4-dipic acid, 10g of hexazinone, 0.1-1g of phenethylphenol polyoxyethylene ether formaldehyde condensate (Nongru No. 700-1) and xylene 45g.

Example 4

The herbicidal composition comprises 41g of glyphosate isopropylamine salt, 7.2g of 2,4-dipic acid, 12.5g of hexazinone, 0.1g of polymer I, alkylphenol polyoxyethylene ether formaldehyde condensate (Nongru No. 700) 0.4g and xylene 40g.

Preparation of polymer I: containing 1 g of 3,7,12,17-tetramethyl-8,13-divinyl-2,18-porphindipropionic acid and 1.5 g of 2,2-(vinyl dipropionic acid O)diethylamine was reacted in the presence of 0.27mL of triethylamine, 0.3mL of N,N-diisopropylcarbodiimide and 50mL of N,N-dimethylformamide at a temperature of 0°C In 30 hours, the pre-product A was purified; in an inert atmosphere, the mixture containing 2g of the pre-product A and 50g of ε-caprolactone was reacted for 40 hours in the presence of 0.1 mg of stannous octoate and at a temperature of 140°C, and the purified product was obtained Pre-product B; a mixture comprising 2.2 g of pre-product B and 0.2 g of succinic anhydride in the presence of 0.3 mL of triethylamine and 50 mL of dichloromethane was reacted for 15 hours at a temperature of 20° C., and purified to obtain the polymer Object I.

Example 5

The herbicidal composition comprises 41g of glyphosate isopropylamine salt, 7.2g of 2,4-dipic acid, 12.5g of hexazinone, 0.1g of polymer I, alkylphenol polyoxyethylene ether formaldehyde condensate (Nongru No. 700) 0.4g and xylene 40g.

Preparation of polymer I: containing 1 g of 3,7,12,17-tetramethyl-8,13-divinyl-2,18-porphindipropionic acid and 1.75 g of 2,2-(vinyl dipropionic acid O)diethylamine was reacted in the presence of 0.27mL of triethylamine, 0.3mL of N,N-diisopropylcarbodiimide and 50mL of N,N-dimethylformamide at a temperature of 5°C In 20 hours, pre-product A was purified; in an inert atmosphere, a mixture containing 2 g of pre-product A and 45 g of ε-caprolactone was reacted for 45 hours in the presence of 0.1 mg of stannous octoate at a temperature of 130 ° C, and purified to obtain Pre-product B; a mixture comprising 2 g of pre-product B and 0.2 g of succinic anhydride in the presence of 0.3 mL of triethylamine and 50 mL of dichloromethane was reacted for 12 hours at a temperature of 25° C., and purified to obtain the polymer I.

Example 6

The herbicidal composition comprises 41g of glyphosate isopropylamine salt, 7.2g of 2,4-dipic acid, 12.5g of hexazinone, 0.1g of polymer I, alkylphenol polyoxyethylene ether formaldehyde condensate (Nongru No. 700) 0.4g and xylene 40g.

Preparation of polymer I: containing 1 g of 3,7,12,17-tetramethyl-8,13-divinyl-2,18-porphindipropionic acid and 2 g of 2,2-(vinyldioxy ) diethylamine was reacted in the presence of 0.27mL triethylamine, 0.3mL N,N-diisopropylcarbodiimide and 50mL N,N-dimethylformamide at 2°C for 25 hour, purified to obtain pre-product A; in an inert atmosphere, the mixture comprising 2g of pre-product A and 40g of ε-caprolactone was reacted for 50 hours under the condition of 120°C in the presence of 0.1mg of pre-product A and 40g of stannous octoate, and purified to obtain Product B; a mixture comprising 1.8 g of pre-product B and 0.2 g of succinic anhydride in the presence of 0.3 mL of triethylamine and 50 mL of dichloromethane at a temperature of 30° C. for 10 hours and purified to obtain the polymer I.

Comparative example 1:

The herbicidal composition comprises 7.2 g of 2,4-dipic acid, 12.5 g of hexazinone, 0.4 g of alkylphenol polyoxyethylene ether formaldehyde condensate (Nongru No. 700) and 40 g of xylene.

Comparative example 2:

The herbicidal composition comprises 41 g of glyphosate isopropylamine salt, 12.5 g of hexazinone, 0.4 g of alkylphenol polyoxyethylene ether formaldehyde condensate (Nongru No. 700) and 40 g of xylene.

Comparative example 3:

The herbicidal composition comprises 41 g of glyphosate isopropylamine salt, 7.2 g of 2,4-dichloric acid, 0.4 g of alkylphenol polyoxyethylene ether formaldehyde condensate (Nongru No. 700) and 40 g of xylene.

Comparative example 4:

The herbicidal composition comprises 7.2 g of 2,4-dipic acid, 12.5 g of hexazinone, 0.1 g of polymer I, 0.4 g of alkylphenol polyoxyethylene ether formaldehyde condensate (Nongru No. 700) and 40 g of xylene.

The preparation of polymer I: with embodiment 5.

Comparative example 5:

The herbicidal composition comprises 41 g of glyphosate isopropylamine salt, 12.5 g of hexazinone, 0.1 g of polymer I, 0.4 g of alkylphenol polyoxyethylene ether formaldehyde condensate (Nongru No. 700) and 40 g of xylene.

The preparation of polymer I: with embodiment 5.

Comparative example 6:

The herbicidal composition comprises glyphosate isopropylamine salt 41g, 2,4-dipic acid 7.2g, 0.1g polymer I, alkylphenol polyoxyethylene ether formaldehyde condensate (Nongru No. 700) 0.4g and xylene 40g .

The preparation of polymer I: with embodiment 5.

Comparative Example 7

The herbicidal composition comprises 0.1 g of polymer I, 0.4 g of alkylphenol polyoxyethylene ether formaldehyde condensate (Nongru No. 700) and 40 g of xylene.

The preparation of polymer I: with embodiment 5.

As a non-cultivated land, the main control targets are: daughter of a daughter, Polygonum sylvestris, Polygonum cloves, crabgrass, amaranth, sheep's hooves, festival vegetables, Moshang vegetables, special-shaped sedges and barnyard grass. The present invention selects these ten kinds of non-cultivated land weeds as experimental objects, and studies the herbicidal effects of Examples 1-6 and Comparative Examples 1-6, and the results are shown in Table 1 and Table 2.

Test method: adopt random classification design, set up several test plots in the same test site, herbaceous plants: the area of each plot is 4m×4m, each formula has 3 repetitions, and no spraying is used as a control; shrubs: each plot The area was 20m×20m, and each formulation was replicated three times, with no spraying as a control.

Herbicidal effect (%) = (number of weeds before application - number of weeds after application) ÷ number of weeds before application × 100

Configuration of the medicinal solution: Weigh 50 g of the herbicidal composition provided in Examples 1-6 and Comparative Examples 1-7 and mix with 50 Kg of water to make a medicinal solution, and these medicinal solutions are used for 1 mu of land.

Table 1 embodiment 1-6 and the control effect after 15 days of comparative example 1-7 medication

Table 2 embodiment 1-6 and the control effect after 30 days of comparative example 1-7 medication

As can be seen from the data in Table 1 and Table 2: Embodiment 1-3 is a preferred implementation, and Embodiment 4-6 is the best embodiment. By comparing Example 2 and Comparative Examples 1-3, it can be seen that glyphosate isopropylamine salt, 2,4-dipic acid and hexazinone have a synergistic effect on the herbicidal effect of controlling non-cultivated land weeds, not only improving the control of non-cultivated land Increase the weed removal rate of cultivated land, and improve the quick effect of controlling weeds in non-cultivated land. By comparing Example 5 and Comparative Example 4-6, it can be concluded that glyphosate isopropylamine salt, 2,4-dipic acid and hexazinone have a synergistic effect on the herbicidal effect of controlling non-cultivated land weeds, not only improving The herbicide rate of controlling non-cultivated land weeds, and improve the quick effect of controlling non-cultivated land weeds. As can be seen from comparative examples 2 and 4-7, polymer I does not have any herbicidal activity, but polymer I can synergize the herbicidal composition containing glyphosate isopropylamine salt, 2,4-dipic acid and hexazinone herbicidal activity. This is because polymer I can form stable micelles, and glyphosate isopropylamine salt, 2,4-D acid and hexazinone are distributed in the micelles, which enhances glyphosate isopropylamine salt, 2,4-D The stability of acid and hexazinone, thereby synergizing the herbicidal activity of the herbicidal composition containing glyphosate isopropylamine salt, 2,4-D acid and hexazinone.

Select Example 2 and Example 5 as the research object, and select the knotweed as the control object, and further verify that the polymer I has a synergistic effect on the herbicidal composition in the control of non-arable land weeds, and the research results are shown in Table 3.

Test method: adopt the potted stem and leaf treatment method (NY/T1155.4-2006): put quantitative soil in a plastic pot with a height of 6 cm and a diameter of 9 cm, sow 15-20 grains of the target weed seeds in the plastic pot, cover 0.5-1cm thick fine soil is placed in the greenhouse for cultivation, and the stems and leaves are sprayed when the weeds grow to the 3-5 leaf stage. Each pot is sprayed with 1mL of liquid medicine, and each treatment is repeated 4 times, and the treatment without medicine is set. For control. After treatment, the test materials were cultured in the greenhouse, and the growth of the target weeds was regularly observed. After 20 days, the symptoms of target damage and growth inhibition were visually observed, and the fresh weight of the aboveground part or the fresh weight of the plants was weighed. Virulence effects of target weeds.

Fresh weight inhibition rate P(%)=(control fresh weight-treatment fresh weight)/control fresh weight×100

Table 3 embodiment 2 and embodiment 5 are to the virulence assay result that knotweed inhibits

Test items Dose (ga.i./ha) Actual control effect E value (%) Theoretical control effect E₀ value (%) E-E₀ value (%) joint effect evaluation Example 2 300 37.65 - - - Example 5 300+90 79.91 58.89 21.02 Synergy

Note: The data in Table 3 uses the Gowing method to evaluate the combined action mode of herbicides (NY/T1155.7-2006), the formula is E0=X+Y(100-Y)/100, where: X is the amount of sulfuron-methyl The fresh weight control effect on barnyardgrass at P; Y is the fresh weight control effect on barnyard grass when the amount of sodium dimethyl tetrachloride is Q; E0 is the fresh weight control effect on barnyard grass when the amount of sulfuron-methyl is P+ When the amount of sodium dimethyltetrachloride is Q, the theoretical fresh weight control effect on barnyard grass; E is the actual fresh weight control effect of the mixed agent, when E-E0>10% is synergistic effect; when E-E0<-10 % is antagonistic; when E-E0 value is between ±10% of theoretical value, it is additive.

Claims (9)

1. a herbicidal composition containing glyphosate isopropylamine salt, 2,4-dipic acid and hexazinone, is characterized in that, comprises 30-50 parts of glyphosate isopropylamine salt in parts by mass, 2 , 5-10 parts of 4-drop acid, 10-15 parts of hexazinone, 0.1-1 parts of emulsifier and 35-45 parts of solvent. 2. The herbicidal composition according to claim 1, characterized in that, the weight ratio of the glyphosate isopropylamine salt, 2,4-Dic acid and hexazinone is 41:7.2:12.5. 3. The herbicidal composition according to claim 1, characterized in that, the emulsifier is a nonionic surfactant or/and an anionic surfactant. 4. the herbicidal composition according to claim 3, is characterized in that, described nonionic surfactant is alkylphenol polyoxyethylene ether formaldehyde condensate, phenylethylphenol polyoxyethylene ether formaldehyde condensate, isopropyl At least one of phenylphenol polyoxyethylene ether formaldehyde condensate, benzylphenol polyoxyethylene ether formaldehyde condensate, the anionic surfactant is polyacrylic acid, sodium polyacrylate, polyacrylamide, alkylphenol polyoxygen Vinyl ether formaldehyde condensate sulfate, alkylnaphthalenesulfonic acid formaldehyde condensate, phenolsulfonic acid naphthalenesulfonic acid formaldehyde condensate sodium salt, phenol formaldehyde condensate sulfonic acid sodium salt, phenol-urea-formaldehyde condensate sulfonate, carboxylate At least one of methylcellulose, xanthan gum, sodium lignosulfonate, desugared sodium lignosulfonate, and desugared condensed sodium lignosulfonate. 5. the herbicidal composition according to claim 1, is characterized in that, described solvent is toluene, xylene, naphtha, acetone, methyl ethyl ketone, cyclohexanone, trichloroethylene, perchlorethylene , ethyl acetate, amyl acetate, butyl acetate, propylene glycol monomethyl ether and ethylene glycol monomethyl ether, methyl alcohol, ethyl alcohol, isopropyl alcohol, amyl alcohol, ethylene glycol, At least one of propylene glycol, glycerin, N-methyl-2-pyrrolidone, N,N-dimethylalkylamide, and dimethyl sulfoxide. 6. the herbicidal composition according to claim 1, is characterized in that, described herbicidal composition also comprises the polymer I of 0.1-1 weight part; : 1.5-2 of 3,7,12,17-tetramethyl-8,13-divinyl-2,18-porphin dipropionic acid and 2,2-(vinyldioxy)diethylamine in three In the presence of ethylamine, N,N-diisopropylcarbodiimide and polar organic solvents, react for 20-30 hours at a temperature of 0-5°C, and purify the pre-product A; in an inert atmosphere containing the weight ratio The mixture of pre-product A and ε-caprolactone in the ratio of 1:20-25 is reacted for 40-50 hours in the presence of a catalyst at a temperature of 120-140°C, and purified to obtain pre-product B; the weight ratio is 9-11 : The mixture of pre-product B and succinic anhydride in 1 was reacted for 10-15 hours in the presence of triethylamine and a polar organic solvent at a temperature of 20-30° C., and purified to obtain the polymer I. 7. The herbicidal composition according to claim 6, wherein the catalyst is selected from stannous octoate. 8. The herbicidal composition according to any one of claims 1 to 7, characterized in that the herbicidal composition is a water-dispersible agent. 9. Use of the herbicidal composition as described in any one of 1 to 8 in non-cultivated land weeding.