CN106942234A - A kind of herbicidal composition and application containing benzene azoles fluorine humulone and benzene flumetsulam - Google Patents

Abstract

The present invention relates to technical field of pesticide, and in particular to a kind of herbicidal composition and application containing benzene azoles fluorine humulone and benzene flumetsulam.The composition is one or more in isoxadifen, cymolsulfamide, mefenpyrdiethyl, furilazole comprising component effective active composition A benzene azoles fluorine humulone, effective active composition B benzene flumetsulam and safener compound C, safener compound C.In the Herbicidal combinations A, B, C weight/mass percentage composition account for total amount for 1% 95%, preferably 10% 80%.The Herbicidal combinations can effectively prevent and kill off corn field common weed, preventive effect is improved to pernicious broad leaved weed, especially suppressing the broad leaved weeds such as grassy weed and Amaranthus retroflexus, Horseweed Herb such as lady's-grass, eleusine indica, the green bristlegrass of class herbicide generation resistance to ALS has notable preventive effect.The Herbicidal combinations that the present invention is provided can expand herbicide controlling spectrum, reduce usage amount, can slow down weeds drug resistance and drug-fast generation and development again, with important economic worth and social effect.

Description

A kind of herbicidal composition and application containing benzene azoles fluorine humulone and benzene flumetsulam

Technical field

The invention belongs to pesticide field, and in particular to one group includes benzene azoles fluorine humulone, the cornfield weeding of benzene flumetsulam Composition.

Background technology

Chemical weed control is the most economic, effective means during farmland weed is prevented and kill off.But use list long-term continuous high dose The chemical herbicide of one kind or the single mode of action, the problems such as easily causing weeds resistance and resistance evolution.Herbicide chemical combination The reasonable compounding or mixture of thing have expand weeds spectrum, improve preventive effect, delay weeds drug resistance and drug-fast generation with The advantages of development, be one of maximally efficient method for solving the above problems.

Benzene flumetsulam is proporphyrinogen oxidase (PPO) inhibitor, a variety of broad leaved weeds can be effectively prevented and kill off, to grass family Weeds are invalid.Acted on life of going out quickly and pedo relict degraded is rapid.Maize at Seedling Stage cauline leaf spray pesticide, easily causes corn Yellowing leaf, lopsided symptom of chemical damage, severe patient cause the underproduction.

Benzene azoles fluorine humulone is typical HPPD inhibitor.P _ Hydroxyphenyl pyruvic acid dual oxide enzyme (HPPD) is after acetylcoenzyme A carboxylases (ACCase) inhibitor, acetolactate synthestase (ALS) inhibitor and proporphyrinogen oxidase (Protox) inhibitor The another class new herbicides found Deng after.The action character of HPPD inhibitor be before the activity of weeding with wide spectrum, bud and It can be used after bud, weeds occur dead after albefaction.Using HPPD inhibitor class herbicide, Weed Resistance risk is significantly less than ALS inhibitor, and cross resistance caused by target resistance is not present in other mechanism of action with conventional ALS inhibitor etc..

Herbicide-safener (Safener), also referred to as antidote (Antidote) or protective agent (Protectant), are to have The chemical substance of special performance.Herbicide-safener is that on the premise of herbicide is not influenceed to target weeds activity, there is selection Cover crop exempts from herbicide damage on ground, so that strengthen tolerance of the crop to herbicide, peace of the increase herbicide to crop Quan Xing.The states such as the U.S., Germany, Switzerland, Japan, Canada, Russia, South Korea and Hungary to the research of herbicide-safener compared with Many, China starts late, and just starts this research at the end of the eighties.

Herbicide-safener, can be divided into dichloroacetyl amine, oxime ethers, carboxylic acid derivates class, sulfonic acid by compounds category Derivative species, oxazoles, thiazole and other heterocyclic compounds, ketone and its derivative etc.；It can be divided into naphthoic acid anhydride, two chloroethenes by structure Amide-type, oxime ethers, heterocyclic, sulfonylureas (amine) class, plant growth regulator class, classes of herbicides and bactericide class etc.；By work It can be divided into action principle with mode：Mating type, breakdown type, antagonism type, offset-type etc..

With the extensive use of herbicide, herbicide damage problem continuously emerges, and exists to herbicide-safener and compels to be essential Ask.Herbicide-safener include amide-type, carbamates, phenoxy carboxylic acid, aryloxyphenoxypropanoates class, sulfonylurea, Sulfonamides, imidazolone type, cyclohexanedione class, isoxazole diones, sym-trinitrobenzene etc..The crop of protection mainly has jade Rice, paddy rice, sorghum, corn, corn, rye, cotton, soybean etc..

The herbicide of current corn field application mainly has a small number of kinds such as nicosulfuron, mesotrione.Both herbicides Used for many years on corn, weeds start to highlight to the resistance problem of nicosulfuron, mesotrione activity is low, herbicide controlling spectrum Narrow, especially setaria weeds effect is poor, needs safe, broad weed-killing spectrum in production badly, can solve the problem that resistant weed problem Kind.

The content of the invention

The present invention seeks to：There is provided one group and include benzene azoles fluorine humulone, the cornfield weeding composition of benzene flumetsulam, realize To corn field lady's-grass, barnyard grass, green green bristlegrass, eleusine indica, Amaranthus retroflexus, pig Xian, Horseweed Herb, purslane, acalypha copperleaf, piemarker, lamb's-quarters Deng effectively preventing and kill off for common weed, and produce to ALS inhibitor the lady's-grass of resistance, it is eleusine indica, green green bristlegrass, Horseweed Herb, anti- Preventing and kill off for the resistant weeds such as branch amaranth, expands herbicide controlling spectrum, reduces applications of pesticide amount, improve to crop safety, solve the anti-medicine of weeds The problems such as property.

To solve the above-mentioned problems in the prior art, the present invention is achieved through the following technical solutions：

A kind of cornfield weeding composition and its application, it is characterised in that：The Herbicidal combinations include weeding effective active into Divide A benzene azoles fluorine humulone, B benzene flumetsulam and C safener compounds, the safener compound is isoxadifen, to different One or more in propyltoluene sulfonamide, cyclopropyl-sulfonylamide, mefenpyrdiethyl, furilazole.

Wherein, A：B weight ratio is 1-100:1-100:, preferably A：B weight ratio is 1-60：1-30, more preferably A：B Weight ratio be 1-20：1-10, in the range of the weight ratio limited, A obtains the skill of Synergistic with active component B mixtures Art effect, safener compound C plays improved safety well to crop.

A, B, C weight/mass percentage composition account for the 1-95% of total amount, preferably 10-80% in the Herbicidal combinations.Generally, originally The agricultural chemicals conven-tional adjuvants of active component of the Herbicidal combinations of invention comprising 1-95 parts by weight and 5-99 parts by weight.

The conven-tional adjuvants of the Herbicidal combinations can be carrier, surfactant etc..

The carrier represents a kind of organic or inorganic, natural or synthetic material.They contribute to the administration of active component, The carrier is usually inert and must be agriculturally acceptable, and particularly processed plant is received.Carrier can be Solid, such as clay, natural or synthetic silicate, silica, resin, wax, solid fertilizer；Or liquid, such as water, Alcohols, ketone, petroleum distillate, aromatic hydrocarbons or wax hydrocarbon, chlorohydrocarbon, liquefied gas etc..

The surfactant may include emulsifying agent, dispersant or wetting agent, and it can be ionic or nonionic. The example that can be mentioned that is salt, oxirane and the aliphatic of salt, lignosulfonates, phenolsulfonic acid or the naphthalene sulfonic acids of polyacrylic acid Alcohol or polymer with aliphatic acid or with aliphatic amine and fortified phenol (particularly alkylphenol or aryl phenol), sulfosuccinic The phosphate of the phenol of hydrochlorate, taurine derivatives (particularly taurine alkane fat) and alcohol phosphate or multi-hydroxy ethyl, alkane Base sulfonate, alkylaryl sulfonates, alkyl sulfate, lauryl ether sulfate, aliphatic alcohol sulfate, and sulphation ten Six-, 17-and octadecanol and sulphated fatty alcohol glycol ether, in addition with naphthalene or naphthalene sulfonic acids and phenol and formaldehyde Condensation product, NONIN HS 240, ethoxylated isooctyl-phenol, octyl phenol or nonyl phenol, alkyl phenyl polyglycol ether, Tributyl phenyl polyglycol ether, three stearyl phenyl polyglycol ethers, alkyl aryl polyether alcohol, alcohol and fatty alcohol/oxidation second Alkene condensate, ethoxylated castor oil, polyoxyethylene alkyl ether, ethoxylation polyoxypropylene, laruyl alcohol polyglycol ether acetal, Sorbitol ester, lignin sulfite waste liquor, and protein, albuminate, polysaccharide (such as methylcellulose), hydrophobically modified form sediment Powder, polyvinyl alcohol, polycarboxylate, poly-alkoxyl compound, polyvinylamine, polyvinylpyrrolidone and its copolymer.At least need A kind of surfactant is present, to be conducive to active component disperseing in water and be conducive to enabling them to correctly being applied to plant Thing.

The Herbicidal combinations also can contain various other components, such as protecting colloid, adhesive, thickener, thixotropic agent, Bleeding agent, stabilizer, chelating agent, dyestuff, colouring agent and polymer.

The Herbicidal combinations can by user using it is preceding through dilute or directly use.It, which is prepared, to be added by common Work method prepare, i.e., after active material is mixed with liquid flux or solid carrier, add surfactant such as dispersant, surely Determine the one or more in agent, wetting agent, adhesive, defoamer etc..

The specific preparation of the Herbicidal combinations is wettable powder, dispersible oil-suspending agent, suspending agent, suspension emulsion, breast Oil, water dispersible granules (dry suspending agent), aqueous emulsion, microemulsion.Active compound, safener, solvent, emulsifying agent in above-mentioned formula are added In mother liquor modulation kettle, be made homogeneous oil phase, by deionized water, antifreeze etc. it is well mixed injection product modulation kettle in, through at a high speed Stirring, it is well mixed that the transparent or semitransparent microemulsion product of the present composition is made.

In brief, composition of the invention can be with conventional use of solid and liquid addition in the formula of prior art Agent is mixed.

Herbicidal combinations of the present invention can be applied on pending plant leaf blade by the method for spraying, that is, are applied to On weeds, the easily weed infestation being particularly harmful on plant growth or the surface of invasion influence.Discovery is probed into through experiment, the present invention There is notable synergistic effect between the effective active composition A and effective active composition B of the Herbicidal combinations.Synergistic effect is showed For amount of application reduction, broader weeds distribution spectrum, herbicide effect faster, it is more longlasting.

The beneficial effect that the present invention is realized：

(1) Herbicidal combinations of the present invention are environmental friendly corn field herbicidal, are easy to degraded in the environment, to working as stubble Corn and succession crop are safe.

(2) Herbicidal combinations of the present invention there is low cost, it is easy to use, easy to spread the characteristics of, have huge Economic benefit and social benefit.

(3) compared with prior art, Herbicidal combinations of the present invention can prevent and kill off the common grassy weed of corn field, it is wealthy Leaf weeds, nutgrass flatsedge, can prevent and kill off the grassy weed such as barnyard grass, green bristlegrass that resistance is produced to ALS inhibitor and Amaranthus retroflexus, small again The broad leaved weeds such as bitter fleabane, are the effective schemes of corn field weed resistance management.

Embodiment

With reference to specific embodiment, present invention is further elaborated, but the scope of the present invention can not be limited, The general change that persons skilled in the art are done to patent of the present invention, all falls equivalence in Patent right requirement of the present invention Book limited range.

A, embodiment

1.1) the 25% dispersible oil-suspending agent of benzene azoles fluorine humulone benzene flumetsulam.

Being formulated composition is：The phenethyl phenol of 20%+4% isoxadifen of benzene azoles fluorine+5% benzene flumetsulam of humulone+4% gathers The castor oil polyoxyethylene ether+2.5% of+3.5% polyoxyethylene carboxylate of oxygen ethene ether phosphate triethanolamine salt+10% is thickened Agent organobentonite+methyl oleate is supplied.

Process equipment：Mixing kettle, colloid mill, sand mill, cutter etc..

Process：All materials are put into mixing kettle, colloid mill are crossed after stirring mixing, afterwards into sand mill three-level It is sanded, it is uniformly finished product finally to be sheared in cutter.

1.2) 30% benzene azoles fluorine humulone benzene flumetsulam suspending agent

Being formulated composition is：The sodium lignin sulfonate of 20%+3% cyclopropyl-sulfonylamide of benzene azoles fluorine+10% benzene flumetsulam of humulone+5.5%+ + 5% glycerine of xanthans of 4% pull open powder+1.2%+excess water is supplied.

Process equipment：Mixing kettle, cutter, colloid mill, sand mill etc..

Process：Benzene azoles fluorine humulone, benzene flumetsulam, cyclopropyl-sulfonylamide and auxiliary agent etc. are put into mixing kettle, stirring Colloid mill is crossed after mixing, afterwards into sand mill three-level sanding, finished product is obtained.

1.3) 65% benzene azoles fluorine humulone benzene flumetsulam water dispersible granules

Being formulated composition is：The naphthalenesulfonate+3% of 40%+10% mefenpyrdiethyl of benzene azoles fluorine+25% benzene flumetsulam of humulone+5% The disintegrant of pull open powder+1% polyvinyl alcohol+filler diatomite is supplied.

Process equipment：Airslide disintegrating mill, coulter type mixer, basket comminutor, drying box, screening machine etc..

Process：Above-mentioned material was well mixed air-flow crushing, adds and mediates, was dried after granulation, final sizing is obtained To finished product.

B, the test of pesticide effectiveness

1) experimental condition

1.1), for examination target

Barnyard grass (Echinochloa crusgalli), green green bristlegrass (Setaria viridis), lamb's-quarters (Chenopodium Album), field bindweed (Convolvulus arvensis) picks up from Tai'an Institute of Agricultural Sciences experimental plot.

Above-mentioned weeds use pot-culture method culture, with 180 х 140mm plastic nutrition bowls, are placed in enamel tray, built-in from agriculture The topsoil (at 4/5) for backing through and air-drying sieving is adopted in field, and soil moisture is controlled 20% initial stage, selects full seed homogeneous Weed seed, is soaked 6 hours, the vernalization in 28 DEG C of biochemical cultivation cases (dark), by the ruderal species just showed money or valuables one carries unintentionally with 25 DEG C of warm water Son is uniformly placed in soil surface, then earthing 0.7cm.Culture in controllable heliogreenhouse is placed in after chemicals treatment, is periodically being warded off A certain amount of water is added in porcelain dish, ground moistening is kept.

1.2), condition of culture

Carried out in controllable heliogreenhouse, 18~30 DEG C of temperature, natural lighting, relative humidity 57%~72%.

Soil types is loam, and the content of organic matter is 1.63%, pH=7.1, alkali-hydrolyzable nitrogen 84.3mg/kg, rapid available phosphorus 38.5 Mg/kg, available potassium 82.1mg/kg.

1.3), instrument and equipment

3WP-2000 type walking spray towers, Nanjing Agricultural Machinery Inst., Ministry of Agriculture.GA110 type a ten thousandth electronic balances (Germany)；ZDR2000 intelligent datas recorder (Hangzhou Ze great Instrument Ltd.)；SPX type Intelligent biochemistry incubators (Ning Bojiang Southern instrument plant).

2) experimental design

2.1), reagent

2.1.1), test medicine

Required active component is commercially available active compound.

Active compound makees solvent using dimethylformamide, is diluted with the emulsifying agent T-80 aqueous solution of content 0.1%, now with existing dilute Release.

2.2), test process

2.2.1), dosage is set

, should be from weighing apparatuses such as the action characters and its virulence of two kinds of medicaments it is determined that when A and active component B each groups distribution ratio or content Amount, it is also contemplated that the main application target of the formula.This research on the basis of early stage prerun, if A, active component B it is alone and Mixing consumption is shown in Table lattice respectively, and 15 groups are designed altogether.Blank control is used as using the water without medicament, containing same solvent and emulsifying agent.

2.2.2), experiment is repeated

Often processing is repeated 4 times, and 3 basins are often handled every time, and weed seed 20 is sowed per basin, totally 60 plants are often handled.

2.3), processing mode

2.3.1), treatment time and number of times

Experiment shares medicine 1 time.Treat the heart stage of 2 leaf of weeds 1, thinning, keep 15 plants of weeds in per basin, often processing retains 45 plants, then Continue to cultivate to barnyard grass, the heart stage of 3 leaf of green green bristlegrass 1 and handled.

2.3.2), using apparatus and administrated method

Cultured examination material is uniformly placed on area 0.5m2 platform, sprayed with 3WP-2000 type walking spray towers cauline leaf Mist, spouting liquid is based on 30 liters/mu.Atomisation pressure 0.3MPa.After whole liquid medicine jets are complete, air valve is closed, after 30 seconds, spraying is opened Pyller, takes out nutritive cube.Then air valve is opened, clear water 50ml is sprayed, sparge pipe is cleaned.

3) test method

Using pot-culture method.1.1, reference are shown in weeds culture《Farm-chemical indoor determination test rule herbicide》Carry out.Use prescription Method is shown in 2.3.2, using cauline leaf process method.

4), data survey and statistical analysis

4.1), investigation method

Using absolute number investigation method, with blade along the soil surface cut-out survival whole strain seedling of weeds, weeds are weighed with assay balance Fresh weight.It is based on zero by fresh weight for dead weeds.

4.2), control time and number of times

Investigate within 20 days after processing, investigate 1 time altogether.

4.3), data statistic analysis

The theoretical fresh weight inhibition (E0=X+Y-X*Y/100) of each processing hybrid combining is calculated with Gowing methods, then with actual measurement Inhibiting rate (E) compares, and evaluates the two mixed synergy type to weeds, when E-E0 values be more than 10% be synergistic effect, It is antagonism less than -10%, is addition between -10%~10%.And according to actual preventive effect and herbicide feature, match somebody with somebody The factors such as the balance of side determine optimum proportioning.

X is fresh weight inhibition when A consumptions are P in formula；Y is fresh weight inhibition when active component B consumptions are Q.

Statistics see the table below.

The mixed actual preventive effect and synergy effect (Gowing methods) to weeds of table 1

The mixed actual preventive effect and synergy effect (Gowing methods) to weeds of table 2

After benzene azoles fluorine humulone it can be seen from table 1, table 2 and benzene flumetsulam compounding, benzene azoles fluorine humulone can be significantly improved to barnyard grass Grass, the preventive effect of green green bristlegrass, with notable synergistic effect.Meanwhile, the Herbicidal combinations are alone to benzene azoles fluorine humulone anti- Broad leaved weedses lamb's-quarters, field bindweed of difference etc. are imitated, synergistic effect is especially notable, and then expands herbicide controlling spectrum.

C, crop field field preventive effect

1) to the preventive effect of corn field main weeds

In weeds 3-5 leaf phases, cauline leaf spray pesticide, to liter/mu of water 30.30d after medicine, effect is prevented and kill off to the fresh weight of various weeds Really.

The field demonstration preventive effect of table 3

As can be seen from Table 3, the present composition is good to corn field weed broad weed-killing spectrum, preventive effect, and consumption is few, can be effective Solve benzene azoles fluorine humulone, benzene flumetsulam and the problem of herbicide controlling spectrum is narrow, preventive effect is low, dosage is high is used alone.Meanwhile, than existing The dispersible oil-suspending agent of 4% nicosulfuron that has, 10% mesotrione oil dispersion processing preventive effect are high, broad weed-killing spectrum.

2) corn safety is tested

During 31 heart of leaf of corn, the weeds 3-5 leaf phases, hand sprayer, liter/mu of the amount of being watered 30, using cauline leaf spray even spraying, often Processing is repeated 4 times, and safety conditions are shown in Table 4.

The safety conditions of table 4

Poisoning is classified：1 grade：Plant growth is normal, without any damage symptoms；

2 grades：The slight poisoning of crop, poisoning is less than 10%；

3 grades：The medium poisoning of crop, can recover, not influence yield later；

4 grades：Chemical injury of crops is heavier, it is difficult to recover, and causes the underproduction；

5 grades：Chemical injury of crops is serious, it is impossible to recover, and causes Severe Reduction or total crop failure.

As can be seen from Table 4, it is good to corn safety when present composition dosage is 2 times of amounts of common dose, use Amount is few, can effectively solve the problem of benzene flumetsulam is used alone poor to corn safety.

D, the preventive effect experiment of antagonism weeds

Experiment is from green green bristlegrass (Setaria viridis), the lady's-grass that resistance is produced to ALS inhibitor nicosulfuron (Digitaria sanguinalis), eleusine indica (Eleusine indica), Amaranthus retroflexus (Amaranthus Retroflexus), Horseweed Herb (Conyza canadensis) seed, as subjects, above-mentioned seed was gathered in 2015 In Shandong Province Tai'an proving ground.

Test method：

Weed seed is unified into vernalization, by pretreatment for examination weed seed uniform broadcasting in soil surface.Dispenser is advanced in the ranks Seedling, per basin final singling to 30 plants, each processing 4 basins examination material.Weeds are carried out with cauline leaf spraying treatment, investigation weeds aerial part is fresh Weight, calculate weeds fresh weight preventive effect (in table fresh weight preventive effect be 4 repetitions average value), in statistical test situation after experiment 30 days.

The resistant weed preventing iron test result of table 5

As can be seen from Table 5, Herbicidal combinations of the present invention can effectively prevent and kill off corn field resistant weed lady's-grass, it is eleusine indica, green Color green bristlegrass, Amaranthus retroflexus, Horseweed Herb etc..

It can be drawn by lot of experiments and exploration：Benzene azoles fluorine humulone, benzene flumetsulam, safener compound C are used with, are used There is synergistic effect between corn field after seedling management of weeds, effective active composition, it is miscellaneous to grass family such as barnyard grass, green green bristlegrass It is notable that the broad leaved weedses such as grass and lamb's-quarters, piemarker, field bindweed prevent and kill off synergy.

The cornfield weeding composition that the present invention is provided, reduces the alone dosage of benzene azoles fluorine humulone, benzene flumetsulam, carries It is high that herbicide controlling spectrum is expanded to corn safety, and application cost is reduced, especially to ALS inhibitor resistant weed efficiently, With good application prospect.

Claims (8)

1. a kind of herbicidal composition and application containing benzene azoles fluorine humulone and benzene flumetsulam, it is characterised in that：The weeding Composition active ingredient includes A benzene azoles fluorine humulone, B benzene flumetsulams.

2. Herbicidal combinations according to claim 1, it is characterised in that：Effective active composition A：Effective active composition B matter Amount is than being 1-100：1-100.

3. Herbicidal combinations according to claim 1, it is characterised in that：Effective active composition A：Effective active composition B's Mass ratio is 1-60：1-30.

4. Herbicidal combinations according to claim 1, it is characterised in that：Effective active composition A：Effective active composition B's Mass ratio is 1-20：1-10.

5. Herbicidal combinations according to claim 1, it is characterised in that：Also contain safener C, the safener, which is selected from, is It is one or more in isoxadifen, cymolsulfamide, cyclopropyl-sulfonylamide, mefenpyrdiethyl, furilazole.

6. Herbicidal combinations according to claim 1, it is characterised in that：A, B, C matter in the Synergistic herbicide compositions Amount percentage composition accounts for the 1-95%, preferably 10-80% of total amount.

7. Herbicidal combinations according to claim 1, it is characterised in that：The specific preparation of the Herbicidal combinations is breast Oil, suspending agent, microemulsion, suspension emulsion, aqueous emulsion, dispersible oil-suspending agent, wettable powder or water dispersible granules.

8. the Synergistic herbicide compositions as described in claim 1-7 any one, it is characterised in that：The composition is preventing and kill off corn Field common weed such as lady's-grass, barnyard grass, green green bristlegrass, eleusine indica, Amaranthus retroflexus, purslane, acalypha copperleaf, pig Xian, piemarker, lamb's-quarters, field The weeds such as japanese bearbind, ivy glorybind, Horseweed Herb effect significantly, weeds such as lady's-grass, eleusine indica, the dog tail of resistance is produced to ALS inhibitor Grass, Amaranthus retroflexus, Horseweed Herb etc. have notable preventive effect, to corn safety.