CN106508913B - Herbicide composition containing triazophoron and triafamone and application thereof - Google Patents

Abstract

The invention relates to the technical field of pesticides, and particularly relates to a herbicide composition containing triazophone and triafamone and application thereof. The composition comprises the effective active ingredients of the components of the tembotrione and the mefenacet. The mass percentage of the triazophone and the triafamone in the weeding composition accounts for 1-95%, preferably 10-80% of the total weight. The weeding composition can effectively prevent and kill off common weeds in paddy fields, improves the prevention and killing effect on resistant gramineous weeds, and particularly has obvious prevention and killing effect on barnyard grass with resistance generated by an ALS inhibitor and an ACCase inhibitor. The weeding composition provided by the invention can expand the weeding spectrum, reduce the use amount, and slow down the occurrence and development of drug resistance and drug resistance of weeds, and has important economic value and social significance.

Description

Herbicide composition containing triazophoron and triafamone and application thereof

Technical Field

The invention belongs to the field of pesticides, and particularly relates to a paddy field herbicide composition containing triazophone and triafamone.

Background

Chemical weeding is the most economical and effective means in preventing and removing weeds in farmlands. However, the problems of drug resistance and resistance evolution of weeds are easily caused by long-term continuous high-dose use of a single variety or single action mode of chemical herbicide. The reasonable compounding or mixing of the herbicide compound has the advantages of expanding the weed spectrum, improving the control effect, delaying the occurrence and development of drug resistance and drug resistance of weeds and the like, and is one of the most effective methods for solving the problems.

The mefenacet is a protoporphyrinogen oxidase (PPO) inhibitor and can effectively control various gramineous weeds and broadleaf weeds; the safety to rice is better, the yellowing of rice leaves is easily caused under normal dosage, the yield of rice is basically not affected, but the yield of rice can be reduced due to the application of overdose.

Triazolesulfonone is a typical HPPD inhibitor. P-hydroxyphenylpyruvate dioxygenase (HPPD) is a further new class of herbicides that is discovered following acetyl-coa carboxylase (ACCase) inhibitors, acetolactate synthase (ALS) inhibitors, protoporphyrinogen oxidase (Protox) inhibitors and the like. The HPPD inhibitor has the characteristics of broad-spectrum herbicidal activity, can be used before and after germination, and is dead after albinism of weeds. With HPPD inhibitor herbicides, the risk of weed resistance is much lower than with ALS inhibitors, and there is no cross-resistance caused by target resistance with other mechanisms of action such as the commonly used ALS inhibitors.

Herbicide safeners (safeners), also known as antidotes (antidotes) or protectants (protectants), are chemical substances with unique properties. The herbicide safener selectively protects crops from herbicide damage on the premise of not influencing the activity of the herbicide on target weeds, thereby enhancing the tolerance of the crops to the herbicide and increasing the safety of the herbicide on the crops. The study of herbicide safeners in countries such as usa, germany, switzerland, japan, canada, russia, korea and hungary was much more intensive and started later in china only after the 80 s.

Herbicide safeners, which can be classified into dichloroacetamides, oxime ethers, carboxylic acid derivatives, sulfonic acid derivatives, oxazoles, thiazoles and other heterocyclic compounds, ketones and derivatives thereof, and the like according to the compound classes; according to the structure, the plant growth regulator can be divided into naphthalic acid anhydrides, dichloroacetamides, oxime ethers, heterocycles, sulfonylureas (amines), plant growth regulators, herbicides, bactericides and the like; the method and principle of action can be divided into: binding, dissociating, antagonistic, compensatory, etc.

With the wide application of the herbicide, the problem of phytotoxicity of the herbicide continuously appears, and urgent needs exist for herbicide safeners. The herbicide safeners include amides, carbamates, phenoxy carboxylic acids, aryloxyphenoxypropionates, sulfonylureas, sulfonamides, imidazolinones, cyclohexanediones, isoxazolediones, trimexazines, and the like. The crops to be protected mainly comprise rice, sorghum, rice, rye, cotton, soybean and the like.

At present, the herbicides applied to the paddy field mainly comprise quinclorac, bispyribac-sodium, penoxsulam, cyhalofop-butyl and other few varieties. The herbicides are used on rice for many years, the resistance problem of weeds to penoxsulam, bispyribac-sodium and cyhalofop-butyl begins to be prominent, particularly, the current mainstream herbicides in direct-seeding rice areas have obvious resistance to barnyard grass, and moleplant also has obvious resistance to cyhalofop-butyl. Therefore, a variety which has high safety and wide weed control spectrum and can solve the problem of resistant weeds is urgently needed in production.

Disclosure of Invention

The invention aims to: the herbicide composition comprises triazasulam and triazamide, and can effectively prevent and kill common weeds in paddy fields such as large crabgrass, barnyard grass, moleplant seed, cyperus rotundus, sedge heterotropoides, arthrobacter, monochoria vaginalis, short arrowhead, monochoria japonica, rhizoma alismatis, Chinese iris, edible tulip, scirpus planiculmis, scripus triqueter and the like, prevent and kill large crabgrass and barnyard grass which have resistance to ALS inhibitors and ACCase inhibitors, expand the herbicide controlling spectrum, reduce the application amount of pesticides, improve the safety of crops, solve the problems of weed resistance to drugs and the like.

In order to solve the above problems in the prior art, the present invention is implemented by the following technical solutions:

a herbicide composition containing triazophone and triafamone and application thereof are characterized in that: the weeding composition comprises the effective active ingredients of weeding, namely the triazophone, the triafamone and a safener compound, wherein the safener compound is one or more of isoxadifen, p-isopropyl toluene sulfonamide, cyclopropane sulfonamide, mefenpyr, cloquintocet-mexyl, and gibberellic acid.

Wherein the weight ratio of the triazophone to the triafamone is 1-100:1-100, and the preferable weight ratio of the triazophone to the triafamone is 1-20: 1-60, more preferably the weight ratio of the triazasulam to the triafamone is 1-10: 1-30, within the limited weight ratio range, the compounding of the triazasulam and the triafamone achieves the technical effect of synergy, and the safener compound has good effect of improving the safety of crops.

The mass percentage of the triazophone and the triafamone in the weeding composition accounts for 1-95%, preferably 10-80% of the total amount. Generally, the herbicidal compositions of the present invention comprise 1 to 95 parts by weight of the active ingredient and 5 to 99 parts by weight of conventional adjuvants for pesticides.

The conventional adjuvant of the herbicidal composition may be a carrier, a surfactant, etc.

The carrier represents an organic or inorganic, natural or synthetic substance. They facilitate the application of the active ingredient, the carrier being generally inert and must be agriculturally acceptable, in particular for the treated plant. The carrier may be a solid, such as a clay, natural or synthetic silicate, silica, resin, wax, solid fertilizer, or the like; or liquids such as water, alcohols, ketones, petroleum distillates, aromatic or waxy hydrocarbons, chlorinated hydrocarbons, liquefied gases, etc.

The surfactant may include an emulsifier, dispersant or wetting agent, which may be ionic or non-ionic. Examples which may be mentioned are salts of polyacrylic acids, lignosulphonates, salts of phenolsulphonic or naphthalenesulphonic acids, polymers of ethylene oxide with aliphatic alcohols or with aliphatic acids or with aliphatic amines and substituted phenols, in particular alkylphenols or arylphenols, sulphosuccinates, taurine derivatives, in particular taurine alkyl esters, and phosphoric esters of alcohols or polyhydroxyethylated phenols, alkylsulfonates, alkylarylsulphonates, alkylsulfates, lauryl ether sulphates, fatty alcohol sulphates, and sulphated hexadec, heptadeca-and octadecanols and sulphated fatty alcohol glycol ethers, and furthermore condensates of naphthalene or naphthalenesulphonic acids with phenol and formaldehyde, polyoxyethylene octylphenyl ether, ethoxylated isooctylphenol, octylphenol or nonylphenol, alkylphenyl polyglycol ethers, tributylphenyl polyglycol ether, tristearylphenyl polyglycol ether, polystearylphenyl polyglycol ether, Alkylaryl polyether alcohols, alcohol and fatty alcohol/ethylene oxide condensates, ethoxylated castor oil, polyoxyethylene alkyl ethers, ethoxylated polyoxypropylene, lauryl alcohol polyglycol ether acetal, sorbitol esters, lignosulfite waste liquors, and also proteins, denatured proteins, polysaccharides (e.g. methylcellulose), hydrophobically modified starches, polyvinyl alcohols, polycarboxylates, polyalkoxylates, polyvinylamines, polyvinylpyrrolidone and copolymers thereof. At least one surfactant is required to be present to facilitate dispersion of the active ingredients in water and to facilitate their proper application to the plant.

The herbicidal compositions may also contain various other components such as protective colloids, adhesives, thickeners, thixotropic agents, penetrants, stabilizers, chelating agents, dyes, colorants, and polymers.

The herbicidal composition may be diluted by the user prior to use or used directly. The formulation can be prepared by conventional processing methods, i.e., mixing the active substance with a liquid solvent or solid carrier, and adding one or more surfactants such as dispersants, stabilizers, wetting agents, binders, defoamers, etc.

The specific preparation of the weeding composition is wettable powder, dispersible oil suspending agent, suspending emulsion, missible oil, water dispersible granule (dry suspending agent), emulsion in water and microemulsion. Adding the raw medicines, the safener, the solvent and the emulsifier in the formula into a mother liquor preparation kettle to prepare a uniform oil phase, uniformly mixing deionized water, an antifreeze agent and the like, injecting into a product preparation kettle, and uniformly mixing through high-speed stirring to prepare the transparent or semitransparent microemulsion product of the composition.

In short, the compositions of the present invention may be mixed with solid and liquid additives conventionally used in prior art formulations.

The herbicidal compositions according to the invention can be applied by spraying to the foliage of the plants to be treated, i.e. to the weeds, in particular to surfaces which are harmful or susceptible to infestation by weeds which are harmful to the growth of the crop. Experiments prove that the effective active ingredients of the weeding composition, namely the triazophone and the triafamone, have a remarkable synergistic effect. The synergistic effect is represented by reduced application amount, wider weed control spectrum and faster and more lasting weeding effect.

The invention has the following beneficial effects:

(1) the weeding composition is an environment-friendly paddy field herbicide, is easy to degrade in the environment, and is safe to current-stubble paddy rice and succeeding crops.

(2) The weeding composition has the characteristics of low cost, convenient use and easy popularization, and has great economic and social benefits.

(3) Compared with the prior art, the weeding composition disclosed by the invention can prevent and kill common gramineous weeds, broadleaf weeds and nutgrass flatsedge in the paddy field, can also prevent and kill barnyard grass, large crabgrass and other gramineous weeds which generate resistance to an ALS inhibitor, and is an effective scheme for managing the resistance of the weeds in the paddy field.

Detailed Description

The present invention is further described with reference to the following examples, which are not intended to limit the scope of the invention, and the general modifications made by those skilled in the art to the invention patent will fall within the scope of the invention as defined by the claims.

A. Examples of the embodiments

1.1) 10% Triazolesulfonylmefonamide-Triazolecarboxamide dispersible oil suspending agent

The formula comprises the following components: 2% of triazophone, 8% of triazolam, 0.5% of isoxadifen, 5% of phenethylphenol polyoxyethylene ether phosphate triethanolamine salt, 5% of fatty acid polyoxyethylene ester, 10% of castor oil polyoxyethylene ether, 2% of thickening agent organobentonite and methyl oleate.

Processing equipment: mixing kettles, colloid mills, sand mills, shearing machines and the like.

The processing process comprises the following steps: putting all the materials into a mixing kettle, stirring and mixing the materials, then passing through a colloid mill, then entering a sand mill for three-stage sand milling, and finally uniformly shearing the materials in a shearing machine to obtain a finished product.

1.2) 20% Triazolesulfonylmefonamide suspension

The formula comprises the following components: 4% of triazophone, 16% of triazolam, 1% of p-isopropyl toluenesulfonamide, 6% of sodium lignosulfonate, 5% of nekal, 1.5% of xanthan gum, 6% of glycerol and the balance of water.

Processing equipment: mixing kettle, shearing machine, colloid mill, sand mill, etc.

The processing process comprises the following steps: adding the triazasulam, the triafamone, the p-isopropyl toluene sulfonamide, the auxiliary agent and the like into a mixing kettle, stirring and mixing, then passing through a colloid mill, and then entering a sand mill for three-stage sand milling to obtain a finished product.

1.3) 50% Triazolesulfonylmefone-Triazolecarboxamide aqueous dispersion granule

The formula comprises the following components: 10% of triazophone, 40% of triazolam, 3% of mefenpyr-diethyl, 5% of naphthalenesulfonates, 3% of nekal, 1% of disintegrant polyvinyl alcohol and filler diatomite.

Processing equipment: jet mills, coulter mixers, basket granulators, drying ovens, screening machines, and the like.

The processing process comprises the following steps: and uniformly mixing the materials, crushing the materials through airflow, kneading the materials, granulating, drying, and finally screening to obtain a finished product.

B. Test of drug efficacy

1) Test conditions

1.1) test target

Echinochloa crusgalli (Echinochloa crusgalli), Euphorbia lathyris (Leptochloa chinensis), Cyperus difformis (Cyperus difformis) and Monochoria vaginalis (Monochoria vagianalis) were collected from the platform paddy field of Jining.

The weeds are cultivated by a pot culture method, plastic nutrition bowls with the size of 180 mm multiplied by 140mm are placed in an enamel tray, surface soil (4/5) which is collected from a farmland and is dried and sieved is filled in the enamel tray, the soil humidity is controlled to be 20% at the initial stage, weed seeds with full and uniform seeds are selected, the weed seeds are soaked in warm water with the temperature of 25 ℃ for 6 hours, germination is accelerated in a biochemical incubator (dark) with the temperature of 28 ℃, the weed seeds which are just exposed to the white are evenly placed on the surface of the soil, and then the soil is covered by 0.7 cm. The treated medicament is placed in a controllable sunlight greenhouse for culture, and a certain amount of water is periodically added into an enamel tray to keep the soil moist.

1.2) culture conditions

The method is carried out in a controllable sunlight greenhouse at the temperature of 18-30 ℃ under natural illumination and with the relative humidity of 57-72%.

The soil type is loam, the organic matter content is 1.63%, the pH value is 7.1, the alkaline hydrolysis nitrogen is 84.3mg/kg, the quick-acting phosphorus is 38.5mg/kg, and the quick-acting potassium is 82.1 mg/kg.

1.3), instrumentation

3WP-2000 model walking spray tower, Minn Jing agricultural machinery research institute of agricultural department. Ten thousandth electronic balance of GA110 type (germany); ZDR2000 intelligent data recorder (hangzhou ze large instruments ltd); SPX type intelligent biochemical incubator (Ningbo Jiangnan Instrument factory).

2) Design of experiments

2.1), reagents

2.1.1) test Agents

The required active ingredients are all technical materials sold in the market.

The original drugs are all diluted by using dimethylformamide as a solvent and using an emulsifier T-80 aqueous solution with the content of 0.1 percent.

2.2) test treatment

2.2.1), dose setting

When the proportion or the content of each component of the tembotrione and the triafamone is determined, the main use purpose of the formula is also considered according to the measurement of the action characteristics of the two medicaments, the toxicity thereof and the like. On the basis of preliminary experiments, the single use and the mixed use amount of the triazophone and the triazamate are respectively shown in tables, and 15 groups are designed. Water without drug, containing the same solvent and emulsifier was used as a blank.

2.2.2), test repetition

Each treatment was repeated 4 times, 3 pots each time, 20 weed seeds were sown per pot, 60 plants each time.

2.3) treatment method

2.3.1), treatment time and number of times

The test was performed 1 time in total. And (3) thinning after 1-leaf 1-heart period of the weeds, keeping 15 weeds in each pot, keeping 45 weeds in each treatment, and then continuously culturing until 3 leaves and 1-heart period for applying the herbicide.

2.3.2), instruments and methods of use

The cultured test material was uniformly placed on a platform having an area of 0.5m2, and sprayed with stem leaves of a 3WP-2000 model walking spray tower at a spray rate of 30 liters/mu. The spraying pressure is 0.3 MPa. And after all the liquid medicine is sprayed, closing the air valve, opening the spraying tower door after 30 seconds, and taking out the nutrition pot. Then the air valve is opened, 50ml of clean water is sprayed, and the liquid spraying pipe is cleaned.

3) Test method

The potting method is adopted. The weed cultivation is carried out according to 1.1 and the standard herbicide for indoor bioassay of pesticides. The application method is 2.3.2, and stem and leaf treatment method is adopted.

4) Data survey and statistical analysis

4.1) investigation method

The complete survival weed seedlings are cut off along the soil surface by a blade by adopting an absolute number survey method, and the fresh weight of the weeds is weighed by an analytical balance. For the weeds that have died, the fresh weight is zero.

4.2), investigation time and number of surveys

The investigation was carried out 20 days after the treatment, and the total number of the investigations was 1.

4.3), statistical analysis of data

The theoretical fresh weight inhibition rate (E0 ═ X + Y-X Y/100) of each treatment mixed combination is calculated by a Gowing method, and then compared with the actually measured inhibition rate (E), the combined action type of the two mixed combinations on the weeds is evaluated, and when the E-E0 value is more than 10 percent, the effect is synergistic, when the E-E0 value is less than-10 percent, the effect is antagonistic, and when the E-E0 value is between-10 percent and 10 percent, the effect is additive. And the optimal proportion is determined according to factors such as actual control effect, characteristics of the herbicide, balance of the formula and the like.

Wherein X is the fresh weight inhibition rate when the dosage of A is P; y is the fresh weight inhibition rate of the active component B when the dosage is Q.

The statistical results are shown in the following table.

TABLE 1 actual control of weeds with combined effect (Gowing method)

TABLE 2 actual control of weeds with combined effect (Gowing method)

As can be seen from the tables 1 and 2, after the triazophos-cotrione and the triafamone are compounded, the control effects of barnyard grass, moleplant seed, cyperus rotundus L and monochoria vaginalis can be obviously improved, the weeding composition has an obvious synergistic effect, and the weeding spectrum is further expanded.

C. Preventing and removing effect in field

1) Control effect on main weeds in paddy field

In the 3-5 leaf stage of the weeds, the stem leaves are sprayed with the pesticide, and the water amount is 30 liters per mu. The fresh weight control effect on various weeds is 30 days after the pesticide is applied.

TABLE 3 demonstration of control effects in the field

As can be seen from the table above, the composition has the advantages of wide weed control spectrum, good control effect and low dosage on paddy field weeds, and can effectively solve the problems of narrow weed control spectrum, low control effect and high dosage when the triazophoron and the triazamide are used independently. Meanwhile, compared with the existing 10% mesotrione dispersible oil suspending agent and other medicaments, the mesotrione dispersible oil suspending agent has high control effect and wide weed control spectrum.

2) Test on safety of Rice

When the rice has 3 leaves and 1 core and weeds are in a 3-5 leaf period, a manual sprayer is used, the water adding amount is 30 liters/mu, stem leaves are uniformly sprayed, each treatment is repeated for 4 times, and the safety condition is shown in table 4.

TABLE 4 Security situations

Grading phytotoxicity: level 1: the crops grow normally without any damage symptoms;

and 2, stage: slight phytotoxicity of crops is less than 10%;

and 3, level: the medium phytotoxicity of crops can be recovered later without influencing the yield;

4, level: the crop has serious phytotoxicity and is difficult to recover, thereby causing the reduction of yield;

and 5, stage: the crop has serious phytotoxicity and can not be recovered, thereby causing serious yield reduction or no yield.

As can be seen from the table above, the composition of the invention has good safety to rice when the dosage is 2 times of the common dosage,

the dosage is small, and the problem that the safety of the single use of the triazolyl oxamide on the rice is poor can be effectively solved.

D. Test for controlling Effect against resistant weeds

Seeds of Echinochloa crusgalli and Euphorbia lathyris (Leptochloa chinensis) which are resistant to ALS inhibitors and ACCase inhibitors were selected as test subjects, and collected from the Jinning fish stand of Shandong province in 2015.

The test method comprises the following steps:

and (3) uniformly accelerating germination of the weed seeds, and uniformly sowing the pretreated weed seeds to be tested on the soil surface. Thinning is carried out before pesticide application, each pot is fixed to 30 plants, and each pot is used for treating 4 pots of test materials. Carrying out spray treatment on stems and leaves of weeds, investigating the fresh weight of the overground part of the weeds, calculating the fresh weight control effect of the weeds (the fresh weight control effect in the table is an average value of 4 times of repetition), and counting the test condition 30 days after the test.

TABLE 5 results of resistant weed control test

As can be seen from Table 5, the herbicidal composition of the present invention is effective in controlling the development of resistant weeds such as Echinochloa crusgalli and Euphorbiae lathyris in paddy fields against ALS inhibitors and ACCase inhibitors.

Through a large number of experiments and explorations, the following results can be obtained: the triazophone and the triafamone are mixed for preventing and killing weeds after seedling in the paddy field, the effective active ingredients have synergistic effect, and the triazophone and the triafamone have obvious synergistic effect on preventing and killing barnyard grass, moleplant seed, monochoria vaginalis, cyperus rotundus and the like.

The weeding composition for the paddy field provided by the invention reduces the dosage of the single use of the triazasulam and the triazamide, improves the safety to paddy, expands the weeding spectrum, reduces the application cost, is especially efficient to barnyard grass and moleplant which have resistance to ALS inhibitors and ACCase inhibitors, and has good application prospect.

Claims (9)

1. A weeding composition containing triazophos-ethyl and triafamone is characterized in that the active ingredients of the weeding composition comprise triazophos-ethyl and triafamone, and the mass ratio of the triazophos-ethyl to the triafamone is 3:1.25 ~ 3: 40.

2. A herbicidal composition according to claim 1, characterized in that: the composition also contains a safener, wherein the safener is selected from one or more of isoxadifen, p-isopropyl toluene sulfonamide, cyclopropanesulfonamide, mefenpyr, cloquintocet-mexyl, and gibberellic acid.

3. A herbicidal composition according to claim 1, characterized in that: the active ingredients of the weeding composition, namely the triazophone and the triafamone, account for 1-95% of the total weight in percentage by mass.

4. A herbicidal composition according to claim 3, characterized in that: the active ingredients of the weeding composition, namely the triazophone and the triafamone, account for 10-80% of the total weight in percentage by mass.

5. A herbicidal composition according to claim 1, characterized in that: the specific preparation of the weeding composition is missible oil, a suspending agent, a microemulsion, a suspoemulsion, an emulsion in water, a dispersible oil suspending agent, wettable powder or water dispersible granules.

6. Use of a herbicidal composition according to any one of claims 1 to 5, characterized in that: the composition is used for preventing and removing common weeds in paddy fields.

7. Use of a herbicidal composition according to claim 6, characterized in that: the common weeds in the paddy field are digitaria sanguinalis, barnyard grass, semen euphorbiae, cyperus rotundus, herba arthritidis, monochoria vaginalis, edible tulip, monochoria japonica, rhizoma alismatis, Chinese iris, edible tulip, scirpus planiculmis and scirpus.

8. Use of a herbicidal composition according to claim 6, characterized in that: the common weeds in the paddy field are weeds resistant to ALS inhibitors and ACCase inhibitors.

9. Use of a herbicidal composition according to claim 8, characterized in that: the weeds resistant to ALS inhibitors and ACCase inhibitors are barnyard grass and moleplant seeds.