CN105613522A

CN105613522A - Oxaziclomefone-containing weeding composition

Info

Publication number: CN105613522A
Application number: CN201410598513.7A
Authority: CN
Inventors: 高同军; 王厚文; 宋德明
Original assignee: FUMEISHI PLANT PROTECTING AGENT Co Ltd SUZHOU
Current assignee: FUMEISHI PLANT PROTECTING AGENT Co Ltd SUZHOU
Priority date: 2014-10-30
Filing date: 2014-10-30
Publication date: 2016-06-01
Anticipated expiration: 2034-10-30
Also published as: CN105613522B; WO2016066087A1

Abstract

The invention relates to an oxaziclomefone-containing weeding composition. The oxaziclomefone-containing weeding composition comprises oxaziclomefone as a first active component and a second active component. The second active component is selected from metamifop, pyraclonil, benzobicylon, clomazone, sulfentrazone and azimsulfuron.

Description

Metribuzin Herbicidal combinations

Technical field

The present invention relates to herbicide field. It is more particularly related to contain metribuzin and another herbicide herbicidal composition as the Synergistic of active component.

Background technology

Weeds in rice terrace are less desirable, because the growth of its meeting hazard rice is thus affecting the yield of Oryza sativa L.. Now having developed many herbicides of control of weeds suitable in rice terrace, many herbicides have also all been widely used in the control of weeds in rice terrace. But, the weeds in rice terrace are of a great variety, feature is different, and the harm that paddy growth is produced and the stage producing harm are also all different. Single herbicide is often because herbicide spectrum is limited and cannot kill multiple weeds simultaneously, and needing to apply several times different herbicides for this peasant can effective controlling weeds. Therefore, it is still necessary to develop a kind of herbicide with wide spectrum herbicide effect and with realization, the effective of weeds in rice terrace is prevented and treated.

Summary of the invention

Different herbicide is used in combination be expected to the effect obtaining Synergistic, but the acquisition of cooperative synergism effect but has occasionality, this needs the combination of herbicide is specifically selected, and to spend the test that substantial amounts of time and efforts carries out necessity to confirm. The present invention is found by substantial amounts of test, can produce the effect of Synergistic when herbicide combination listed by the present invention is used in combination, expand respective herbicide spectrum, be used alone significantly more efficient can kill weeds compared to these herbicides. Meanwhile, the herbicidal composition of the present invention can also substantially reduce the medicament injury to Oryza sativa L. thus improve the safety of use. Specifically, the invention provides a kind of herbicidal composition, it comprises the first active component metribuzin and the second active component, and described second active component is selected from the group of azoles acyl grass amine, pyraclonil, benzobicylon, different grass pine, sulfentrazone and azimsulfuron composition.

Detailed description of the invention

Unless otherwise indicated, in this manual, term " herbicide " represents the growth slowing down undesirable plant or kills the molecule of these plants or the combination of molecule, described " undesirable plant " is such as but not limited to evil grass or weeds, broad leaved plant, grass, refers in particular to the barnyard grass in rice terrace, Semen Euphorbiae, Herba Digitariae, Herba Ludwigiae Prostratae, Herba monochoriae vaginalis, Herba Ammanniae Bacciferae, Sagittaria trifolia L. Var. Angusti-folia(Sieb.) Kitag.(Sagittaria sagittifolia L.), cyperus iria, dried tuber, Herba Cyperi Difformis. Term " herbicidally effective amount " represents that the growth to the plant undesirably occurred produces the amount needed for observable inhibition, and described " inhibition " includes plant necrosis, Plant death, growth inhibited, Reproduction suppression, Proliferation Ability and remove, destroy or reduce the activity occurring or reducing undesirable plant of undesirable plant.

Metribuzin (Oxaziclomefone) is inner sucting conduction type herbicide for paddy field, mainly by the root of weeds and stem and leaf basal sink, leaves and stems chlorosis after weeds contact medicament, stops growing, until withered. Main controlling object is the multiple weeds such as barnyard grass, waterwort, Semen Euphorbiae, Herba Cyperi Difformis; Have effective ingredient make consumption dispenser phase length low, suitable, lasting period length, to features such as Security of rice are good.

Azoles acyl grass amine (Metamifop) is aryloxyphenoxypropanoates class herbicide, and susceptible weeds is absorbed by stem and leaf, and conduction, to whole plant, accumulates in separate living tissue, it is suppressed that Plant Acetyl-CoA Carboxylase, causes that fatty acid biosynthesis block kills weeds. In azoles acyl grass amine dispenser few days after, there are the symptoms such as blade chlorisis in susceptible weeds, and after dispenser, in 2 weeks, weeds are dead, and the lasting period, dispenser can ensure for 1 time in the whole period of duration of Oryza sativa L. not by weed encroachmenies such as barnyard grass, Semen Euphorbiae, Herba Digitariae, Herba Eleusines Indicae up to about 40 days.

Pyraclonil (Pyraclonil) belongs to diazole type herbicides, and the mechanism of action is the inhibitor of proporphyrinogen oxidase. There is broad weed-killing spectrum, to features such as rice safeties, can be used for rice field and prevent and kill off annual gramineous weed, sedge weed and broad leaved weed and some perennial weeds.

Benzobicylon (Benzobicyclon) has another name called benzo dicyclo ketone, is pyrazoles herbicide, and its mechanism of action and mode are for suppressing weeds chlcrophyll biosynthesis. Benzobicylon can pass through root, stem, plumelet, leaf absorption and conduct rapidly, and its feature is that activity is high, selectivity is strong, wide spectrum, under rational using method and dosage, to rice safety. Rice terrace dried tuber, broadleaved herb and part grassy weed are had specially good effect by benzobicylon.

Different grass pine (Clomazone) has another name called different oxadiazon, it it is a kind of organic heterocyclic class herbicide, can be absorbed by the root of plant, plumelet, upwards conduct, diffuse to leaf portion through xylem, it is suppressed that the chlorophyll of sensitive plant and the synthesis of carotene, make the whole strain albefaction of weeds, dead in a short time, the control grass phase reaches more than 40 days. Under rational using method and dosage, to rice safety.

Sulfentrazone (Sufentrazone) is triazolineone herbicide, sulfentrazone is a kind of contact killing type selective herbicide, dispenser after Seedling, weeds are absorbed by root and plumelet, when there being light, in chlcrophyll biosynthesis process, by suppressing proporphyrinogen oxidase, cause that poisonous intermedium accumulates, thus destroying weeds cell membrane, make it organize and see after light downright bad, cause the withered death of blade rapid dehydration. Under rational using method and dosage, to rice safety.

Azimsulfuron (Azimsulfuron) is inhibitor of acetolactate synthetase, especially the biochemical synthesis of branched-chain amino acid (such as valine, leucine, isoleucine) had good inhibitory activity, thus hindering division and the growth of weeds cell. By the absorption of weeds root and leaf, conducting in plant body, namely poisoning rear weeds stop growing, then withered. Because it can resolve into rapidly the metabolite without activity of weeding in Oryza sativa L. body, not easily it is metabolized in weeds, thus having played good activity of weeding, and Oryza sativa L. is fool proof.

Herein, unless stated otherwise, percentage composition (%) refers to percentage by weight.

The present invention relates to a kind of herbicidal composition, it comprises the first active component metribuzin and the second active component, and described second active component is selected from the group of azoles acyl grass amine, pyraclonil, benzobicylon, different grass pine, sulfentrazone and azimsulfuron composition. Described second active component can be chosen from one or more of this group.

Preferably, in compositions, the weight ratio of the first active component and the second active component is 20:1 1:20, it is preferred that 2:1 1:10. Further preferred 1:1 1:5.

The herbicidal composition of the present invention can make any agriculturally acceptable dosage form being suitable to and using according to the ordinary skill in the art, includes but not limited to oil suspending agent, cream, wettable powder, water dispersible granules, aqueous emulsion, suspending agent, microemulsion and micro-capsule suspension etc.

The present invention provide in another aspect a kind of Herbicidal combinations, its herbicidal composition of the present invention comprising herbicidally effective amount and acceptable auxiliary agent in Pesticide Science. Preferably, with the gross weight gauge of Herbicidal combinations, the content of described herbicidal composition is 0.1��85%. More enter one preferably 1��50%, 5%��25%. Further preferably 5%, 10%, 15%, 20% and 25%.

In Pesticide Science, acceptable auxiliary agent such as includes solvent, emulsifying agent, wetting agent, disintegrating agent, stabilizer, dispersant, thickening agent, penetrating agent, pH adjusting agent, defoamer, antifreezing agent, carrier, safener etc. and is of value to the known substance that effective ingredient is stablized in the formulation and played drug effect. These auxiliary agents are all compositions conventional in field of pesticide preparation, the selecting and make the determination of consumption belong to the general knowledge of those skilled in the art of concrete composition. Some in these auxiliary agents include but not limited to following component:

(1) crop oil concentrate (mineral oil (85%)+emulsifying agent (15%)); Benzyl cocodimethyl quaternary ammonium salt; The blend of petroleum hydrocarbon, Arrcostab, organic acid and anion surfactant; C9-C11 alkyl poly glucoside; The alcohol ethoxylate of phosphorylation; Natural primary alconol (C12-C16) ethoxylate; Two-sec-butylphenol EO-PO block copolymer; Polysiloxanes-methyl blocking thing; The methylated seed oil of emulsifying; Tridecyl alcohol (synthesis) ethoxylate (8EO); Tallowamine ethoxylate (15EO) and PEG (400) dioleate-99;

(2) adoptable liquid-carrier includes water and organic solvent, it is common to use organic solvent include but not limited to petroleum fractions or hydrocarbon such as: mineral oil, arsol, paraffin oil, etc.; Vegetable oil is soybean oil such as, liana seed oil, olive oil, Oleum Ricini, Oleum Helianthi, Oleum Cocois, Semen Maydis oil, cottonseed oil, Semen Lini oil, Petiolus Trachycarpi oil, Oleum Arachidis hypogaeae semen, safflower oil, Oleum sesami, Oleum Verniciae fordii etc.; And the ester of above vegetable oil; The ester of the polyhydric alcohol (containing 4-6 hydroxyl) of monohydric alcohol or dihydroxylic alcohols, trihydroxylic alcohol or other lower level, such as stearic acid 2-ethyl hexyl ester, n butyl oleate, isopropyl myristate, Rikemal PO 200, succinic acid dioctyl ester, dibutyl adipate, dioctyl phthalate etc.; Single, two and polycarboxylic ester etc. Concrete organic solvent includes toluene, dimethylbenzene, Petroleum, crop oil (cropoil), acetone, methyl ethyl ketone, Ketohexamethylene, trichloro ethylene, perchloro-ethylene, ethyl acetate, acetic acid amyl group ester, acetic acid butyl ester, propylene glycol monomethyl ether and diethylene glycol monomethyl ether, methylol, ethyl alcohol, isopropyl alcohol, amyl group alcohol, ethylene glycol, propylene glycol, glycerol, METHYLPYRROLIDONE, N, N-dimethyl alkylamide, dimethyl sulfoxide, liquid fertilizer etc. In some embodiments, water is the carrier for diluting concentrate.

(3) suitable solid carrier includes but not limited to: Talcum, pyrophyllite (pyrophylliteclay), Silicon stone, active hargil (attapulgusclay), Kaolin, kieselguhr (kieselguhr), Chalk (chalk), kieselguhr (diatomaceousearth), Calx, calcium carbonate, bentonite, bleaching earth (Fuller'searth), cotton seed hull (cottonseedhull), wheat flour, Semen Glycines powder, Pumex (pumice), wood powder, walnut parting (walnutshellflour), lignin etc.

(4) in some embodiments, one or more surfactants are introduced in compositions described herein. Such surfactant uses with solid and fluid composition valuably, is especially designed to use with the composition forms of carrier dilution before administration. The character of surfactant can be anion, cationic or non-ionic and can be used as emulsifying agent, wetting agent, suspending agent or for other purposes.

(5) typical surfactant includes the salt of alkyl sulfate, such as diethanolammonium lauryl base sulfuric ester; Alkylaryl sulfonates, such as calcium dodecyl benzene sulfonate; Alkyl phenol-alkylene oxide addition products, such as nonyl phenol-C18 ethoxylate; Alcohol-alkylene oxide addition products, such as tridecyl alcohol-C16 ethoxylate; Soap, such as sodium stearate; Alkylnaphthalene sulfonate, such as dibutyl naphthalene-sodium sulfonate; The dialkyl of sulfosuccinate, such as two (2-ethylhexyl) sulfosuccinate sodium; Sorbitol ester, such as Oleate; Quaternary ammonium, such as lauryl trimethyl ammonium chloride; The macrogol ester of fatty acid, such as polyglycol distearate; The block copolymer of oxirane and expoxy propane; And the salt of the salt of mono alkyl phosphate and phosphate dialkyl ester; Plant or seed oil such as soybean oil, rapeseed oil/Canola oil, olive oil, Oleum Ricini, Oleum Helianthi, Oleum Cocois, Semen Maydis oil, cottonseed oil, Semen Lini oil, Petiolus Trachycarpi oil, Oleum Arachidis hypogaeae semen, safflower oil, Oleum sesami, Oleum Verniciae fordii etc.; And the ester, particularly methyl ester of above vegetable oil.

The herbicidal composition of the present invention can be used for control and the preventing and treating of undesirable weeds and plant in rice terrace, for instance transplanting rice field or the control of weeds in direct-sowing dry rice terrace. The frequency of administration of Herbicidal combinations of the present invention and amount of application change with weather condition and weed growth situation, according to conventional means, those skilled in the art can determine that necessary frequency of administration and effective amount of application are thus reaching to kill the effect of weeds.

On the other hand, the invention still further relates to and a kind of prevent and treat the method for undesirable plant in rice terrace, including the herbicidal composition of the present invention or the Herbicidal combinations that apply herbicidally effective amount. Described undesirable plant refers in particular to the barnyard grass in rice terrace, Semen Euphorbiae, Herba Digitariae, Herba Ludwigiae Prostratae, Herba monochoriae vaginalis, Herba Ammanniae Bacciferae, Sagittaria trifolia L. Var. Angusti-folia(Sieb.) Kitag.(Sagittaria sagittifolia L.), cyperus iria, dried tuber, Herba Cyperi Difformis.

Following example are for the present invention will be further described, but the present invention is not limited to this. In these embodiments, unless otherwise indicated, all percentage ratios (%) refer both to percentage by weight.

Embodiment 1

Prepare 20% metribuzin azoles acyl grass amine suspending agent (weight ratio of metribuzin and azoles acyl grass amine is 1:3). Weighing each component according to following proportioning, solid, shaped component pulverized in advance, then add grinding in sand mill together with other component, after high shear mixing, allotment prepares 20% metribuzin azoles acyl grass amine suspending agent.

Embodiment 2

Prepare 25% metribuzin pyraclonil wettable powder (weight ratio of metribuzin and pyraclonil is 1:4). Weigh each component according to following proportioning, send after solid, shaped component coarse pulverization into mix homogeneously in blender together with other components, then through namely preparing 25% metribuzin pyraclonil wettable powder after comminution by gas stream.

Embodiment 3

Prepare 10% metribuzin benzobicylon water dispersible granules (weight ratio of metribuzin and benzobicylon is 1:3). Each component is weighed according to following proportioning, then according to dry pulverization process, pelletize, dry, the prepared 10% metribuzin benzobicylon water-dispersible granules of screening preparation.

Embodiment 4

Prepare 6% metribuzin azimsulfuron wettable powder (weight ratio of metribuzin and azimsulfuron is 2:1). Weigh each component according to following proportioning, after the component coarse pulverization of solid, shaped, be admitted in blender mix homogeneously together with other component, then through namely preparing 6% metribuzin azimsulfuron wettable powder after comminution by gas stream.

Embodiment 5

Prepare 6% metribuzin different grass Oleum Pini suspension (metribuzin is 1:2 with different careless loose weight ratio). Each component is weighed according to following proportioning, by former medicine therein, solvent and surfactant mix homogeneously under high velocity agitation, then ground i.e. prepared 6% metribuzin different grass Oleum Pini suspending agent.

Embodiment 6

Prepare 20% metribuzin sulfentrazone suspending agent (wherein the weight ratio of metribuzin and sulfentrazone is 1:1). Weigh each component according to following proportioning, each component is carried out high speed dispersion, mix homogeneously, then through grinding, can be prepared by 20% metribuzin sulfentrazone grass amine suspending agent.

Embodiment 7 test of pesticide effectiveness

The test of pesticide effectiveness. For verifying the composite effect of metribuzin and pyraclonil, sulfentrazone and different grass pine etc., rice terrace carries out the test of pesticide effectiveness. Test institute with medicament includes the metribuzin compositions in the single dose of metribuzin isoreactivity composition and embodiment 1-6. Experimental field select the rice terrace that grassy weed, broad leaved weed and the dried tubers such as barnyard grass are more. Difference according to rice cropping mode and administration time, carries out 4 groups of tests altogether, and often group test repeats 3 times. Will add up medication 20 days or 30 day after tomorrow weeds quantity, and calculate weeds imitation in accordance with the following methods and carry out Security of rice evaluation.

Weed-control effect %=(blank district number of weeds-treatment region number of weeds)/blank district number of weeds �� 100%.

Fresh weight inhibition %=(blank district Oryza sativa L. mean fresh-treatment region Oryza sativa L. mean fresh)/blank district Oryza sativa L. mean fresh �� 100%.

Table 1 to table 4 lists the concrete condition often organizing test respectively, including medicament used, applies dosage, is selected as and kills weeds quantity before and after the weeds of object, medication and weeds imitate result etc. After medication listed in table, weeds strain number is the summation of the weeds strain number in 3 repeated trials after each medication.

Table 1 transplanting rice closes Herbicidal Testing Trials (medication in latter 7 days is transplanted by Qingpu district)

Table 2: transplanting rice closes Herbicidal Testing Trials (medication in latter 11 days is transplanted by Jiangyan City of Jiangsu Province)

Table 3: transplanting rice closes Herbicidal Testing Trials (medication in latter 12 days is transplanted in Huzhou City of Zhejiang Province)

Table 4: direct-sowing dry rice weeding test (medication in latter 11 days is broadcast in In Chaohu City, Anhui Province)

Can be seen that from the result of the test of table 1-table 4, compared with metribuzin, pyraclonil, sulfentrazone and the different grass pine single dose such as single dose, the metribuzin mixture of the present invention has obvious potentiation, such as to the imitation of the selected multiple weeds of test can up to or over 90%, even as high as 100%. Additionally, the metribuzin mixture of the present invention also overcomes the problem that the herbicide spectrum existing for corresponding single dose is narrow, the metribuzin mixture that mode according to the present invention combines is greatly expanded herbicide spectrum, multiple weeds common in rice terrace just can be effectively killed, for instance barnyard grass, Eclipta prostrata, Herba monochoriae vaginalis, Herba Ammanniae Bacciferae, dried tuber by applied once. Therefore, the metribuzin mixture of the present invention uses more convenient, economical, and more environment friendly.

In addition, compared to single dose, the metribuzin mixture of the present invention can reduce the using dosage of herbicide, and this contributes to reducing herbicide and injures (referring to the data that relevant Security of rice in table 1 is evaluated) produced by Oryza sativa L., improves the safety that herbicide uses in rice terrace.

Claims

1. a herbicidal composition, it comprises the first active component metribuzin and the second active component, and described second active component is selected from the group of azoles acyl grass amine, pyraclonil, benzobicylon, different grass pine, sulfentrazone and azimsulfuron composition.

2. herbicidal composition according to claim 1, described second active component can be one or more.

3. herbicidal composition according to claim 1, wherein the weight ratio of the first active component and the second active component is 20:1 to 1:20.

4. herbicidal composition according to claim 3, described weight ratio is 1:1 to 1:5.

5. herbicidal composition according to any one of claim 1 to 4 is used for preventing and treating in rice terrace undesirable plant.

6. prevent and treat a method for undesirable plant in rice terrace, including the herbicidal composition as according to any one of Claims 1-4 applying herbicidally effective amount in rice terrace.

7. method according to claim 6, wherein said rice terrace is transplanting rice field or direct-sowing dry rice terrace.

8. for the Herbicidal combinations of rice terrace, its herbicidal composition as according to any one of Claims 1-4 comprising herbicidally effective amount and acceptable adjuvant in Pesticide Science.

9. Herbicidal combinations according to claim 8, with the gross weight of Herbicidal combinations with, the content of described herbicidal composition is 0.1��85%.