CN101940218A

CN101940218A - Nicosulfuron and fluroxypyr-containing herbicidal composition

Info

Publication number: CN101940218A
Application number: CN2010102785978A
Authority: CN
Inventors: 尹小根
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-09-13
Filing date: 2010-09-13
Publication date: 2011-01-12

Abstract

The invention relates to a nicosulfuron and fluroxypyr-containing herbicidal composition as well as a preparation method and application thereof. The herbicidal composition consists of a compound (A) of nicosulfuron and a compound (B) of fluroxypyr. The herbicidal composition is mixed according to a proper proportion and can be processed into normal pesticide formulations, such as wettable powder, suspending agents, water dispersible granules, and the like through modern pesticide preparation processing techniques and used for preventing and killing annual weeds and perennial weeds, such as cockspur grass, crab grass, goosegrass herb, green bristlegrass, amaranthus retroflexus, purslane, abutilon, bindweed, cephalanoplos segetum, chicory, setariaglauca, eriochloa villosa, black nightshade, herba elsholtziae, xanthium sibiricum Patrin, dayflower, rorippa palustris, penny cress, meadow pine, Artemisisa L, circium japonicum, wild oats in corn fields. The preventing effect of the herbicidal composition is remarkably higher than that of the single compound (A) or the single compound (B), and the application dosage of each active substance is greatly reduced. The invention has not only ecological significance but also very important environmentally-friendly significance at the same time.

Description

The Herbicidal combinations that contains nicosulfuron and fluroxypyr

Technical field

The present invention relates to have the Herbicidal combinations that improves performance, relate to Herbicidal combinations that contains nicosulfuron and fluroxypyr and uses thereof specifically.

Background technology

The adopted name of compound (A) is a nicosulfuron, and chemical name is 2-(4,6-dimethoxypyridin-2-base carbamyl aminosulfonyl)-N, the N-dimethyl nicotinamide.

The English name of nicosulfuron: nicosulfuron (ISO-E draft, BSI, ANSI).CA registration number: 111991-09-4.The exploitation unit is Japanese Ishihara Sangyo Kaisha, Ltd., has obtained patent US4789393.But nicosulfuron dispersed oil suspending agent obtained registration in China in 1993, and the beautiful farming by name of its commodity is happy.

Nicosulfuron is the inner sucting conduction type weed killer herbicide, can be absorbed and conduct rapidly by stem leaves of plants and root, by suppressing the activity of acetolactate synthestase in the plant corpus, stop the synthetic and then prevention cell division of branched-chain amino acid achievement propylhomoserin, leucine and isoleucine, sensitive plant is stopped growing.The weeds symptom of being injured is lobus cardiacus flavescence, chlorosis, albefaction, other leaf flavescence successively from top to bottom then.Generally can see the weeds symptom of being injured after dispenser in 3～4 days, 1～3 week of annual weed is dead, and the following perennial broadleaf weed of 6 leaves is suppressed, and stops growing.High dose also can make perennial weed death.Can effectively prevent and kill off annual weed and perennial broadleaf weeds such as barnyard grass grass in the corn field, lady's-grass, eleusine indica, green foxtail, Amaranthus retroflexus, kitchen garden, piemarker, field bindweed, field thistle, corn sow thistle, setaria glauca, wild broomcorn millet, black nightshade, elscholtiza, Siberian cocklebur, dayflower, bog marshcress herb, penny cress, meadow pine, artemisia, setose thistle, wild oat.

But the nicosulfuron formulation of using on market at present mainly contains the mixture preparation of nicosulfuron dispersed oil suspending agent and water dispersible granules and nicosulfuron and atrazine, nitre sulphur humulone etc.

The Chinese general fluroxypyr by name of compound (B), it swells (starane) trade name in order to make, the fluorine grass is fixed, control the green bristlegrass spirit.Other name is called Dowlo 433.English name is that fluroxypyr (BSI, ISO draft) chemical name is a 4-amino-3,5-two chloro-6-fluoro-pyridine-2-fluoroacetic acid.Fluroxypyr is The Dow Agrosciences, LLC.'s exploitation, has obtained patent US4110104 (1979).

Fluroxypyr is the inner sucting conduction type herbicide after seedling, and is very fast by plant absorbing behind the medicine, makes sensitive plant the reaction of typical hormone herbicide occur, and plant deformity, distortion are finally withered.Be applicable to that ground such as wheat, barley, corn, grape, orchard, pasture, forest land, lawn prevent and kill off broad leaved weed; As clearvers, volume stem knotweed, kitchen garden, black nightshade, field bindweed, knotweed, amaranth etc., bad to the preventive effect of grassy weed.

The preparation of using fluroxypyr in the market and being is mainly 20% missible oil of fluroxypyr.

Compound (A) nicosulfuron and compound (B) fluroxypyr common characteristic are herbicide after seedling, all can use in corn field.Compound (A) nicosulfuron not only can have been prevented and kill off in the corn field broad leaved weed but also can prevent and kill off grassy weed, and the broad leaved weed in compound (B) the fluroxypyr corn field has excellent preventive effect, but bad to the preventive effect of grassy weed.Do not appear in the newspapers with the ratio that the suits weeds that are used for preventing and kill off in the corn field that are mixed simultaneously for nicosulfuron and fluroxypyr.The use of composition not only can improve drug effect, reduces dosage, saves Financial cost, reduces medicament residual in environment.Simultaneously can also delay the drug-fast generation of weeds, prolong the service life of medicament.

Summary of the invention

The Herbicidal combinations that the purpose of this invention is to provide nicosulfuron and fluroxypyr, after suitable ratio mixing, by modern pesticidal preparations process technology, be processed into wetting powder, water dispersible granules, but conventional pesticide formulations such as dispersed oil suspending agent are used for preventing and kill off the barnyard grass grass of corn field, lady's-grass, eleusine indica, green foxtail, Amaranthus retroflexus, kitchen garden, piemarker, field bindweed, field thistle, corn sow thistle, setaria glauca, wild broomcorn millet, black nightshade, elscholtiza, Siberian cocklebur, dayflower, bog marshcress herb, penny cress, meadow pine, artemisia, setose thistle, annual weed and perennial broadleaf weeds such as wild oat.

Herbicidal combinations provided by the invention is characterized in that comprising compound (A) nicosulfuron and compound (B) fluroxypyr.

Compound (A) is: nicosulfuron.

Compound (B) is: fluroxypyr.

Weight ratio between compound in Herbicidal combinations of the present invention (A) and the compound (B) generally is:

The weight ratio of compound (A) nicosulfuron and compound (B) fluroxypyr is 1-100: 1-100

Herbicidal combinations provided by the present invention can effectively be prevented and kill off annual weed and perennial broadleaf weeds such as barnyard grass grass in the corn field, lady's-grass, eleusine indica, green foxtail, Amaranthus retroflexus, kitchen garden, piemarker, field bindweed, field thistle, corn sow thistle, setaria glauca, wild broomcorn millet, black nightshade, elscholtiza, Siberian cocklebur, dayflower, bog marshcress herb, penny cress, meadow pine, artemisia, setose thistle, wild oat.Preventive effect is significantly higher than the preventive effect of compound alone (A) or compound (B), and can reduce the application dosage of each bioactivator.

The present invention is used for preventing and kill off annual weed and perennial broadleaf weeds such as the barnyard grass grass, lady's-grass, eleusine indica, green foxtail, Amaranthus retroflexus, kitchen garden, piemarker, field bindweed, field thistle, corn sow thistle, setaria glauca, wild broomcorn millet, black nightshade, elscholtiza, Siberian cocklebur, dayflower, bog marshcress herb, penny cress, meadow pine, artemisia, setose thistle, wild oat of corn field.This composition is handled as cauline leaf spraying, and the method for processing can be by adding good composition or before use that the different activities component is mixed and handled.

Adoptable surfactant has anion surfactant and non-ionic surface active agent.It comprises alkylsurfuric acid salt, alkyl sulfonic acid alkali metal salt and amido, dialkyl group succinate sodium sulfonate salt, alkylphenol polyoxyethylene formaldehyde condensation products sulfonate, sodium sulfate of polyethenoxy ether of fatty alcohol alkyl polyoxyethylene ether sulfate, alkylnaphthalene sulfonate, fatty acid or fatty acid ester sulphate, alkylphenol polyoxyethylene and fatty alcohol-polyoxyethylene ether etc.That can give an example has farming newborn 2000 series, lignosulfonates, NNO, a dispersing agent MF etc.

Wetting powder is with the mixture of active component, inert carrier and filler and one or more wetting agents, dispersant, bleeding agent, obtains wetting powder by ultramicro grinding, and active principle content is 1-90% (weight) in the wetting powder.

Water dispersible granules is with the mixture of active component, inert carrier and filler and one or more wetting agents, dispersant, bleeding agent, after ultramicro grinding, carries out granulation by fluid bed or fashion of extrusion after adding a certain amount of binding agent.

But the dispersed oil suspending agent is that the mixture of each active component, emulsifier, wetting agent, dispersant, vegetable oil or esterified vegetable oil etc. are pulverized by wet grinding together, make it evenly to disperse and suspend, can suitably add simultaneously suitable auxiliary agent such as thickener, antifreezing agent, stabilizing agent, bleeding agent as required, active principle content is 1-80% (weight).

Herbicidal combinations provided by the invention has following beneficial effect: the weeding ratio height, can effectively prevent and kill off annual weed and perennial broadleaf weeds such as barnyard grass grass in the corn field, lady's-grass, eleusine indica, green foxtail, Amaranthus retroflexus, kitchen garden, piemarker, field bindweed, field thistle, corn sow thistle, setaria glauca, wild broomcorn millet, black nightshade, elscholtiza, Siberian cocklebur, dayflower, bog marshcress herb, penny cress, meadow pine, artemisia, setose thistle, wild oat.Preventive effect is significantly higher than the preventive effect of compound alone (A) or compound alone (B), and has significantly reduced the application dosage of every kind of active substance.The present invention not only has ecological significance, also has important environment protection significance simultaneously.

Specific embodiment

Following examples describe the present invention in detail, and embodiment mainly is for the present invention is described but not is used for limiting the present invention.

Formulation prepares embodiment:

Embodiment 1: the preparation of wetting powder.

Active principle with 4% (A) and 16% active principle (B), 2% sodium lauryl sulfate as wetting agent, 5% NNO as dispersant, 5% calcium lignosulfonate as dispersant, 5% white carbon and other inert filler fully mix together promptly obtain wetting powder after ultramicro grinding.

Embodiment 2: the preparation of water dispersible granules.

Active principle with 20% (A) and 40% active principle (B); 5% carboxylate as wetting agent; 5% NNO as dispersant; 5% calcium lignosulfonate as dispersant; and other inert filler fully mixes together after ultramicro grinding, can obtain water dispersible granules after the mixture that adds an amount of water and binding agent is dried by fluidized bed prilling or extruder grain.

Embodiment 3: but the dispersed oil suspending agent

Active principle with 5% (A) and 15% active principle (B), 10% carboxylate as dispersant, but 2% organobentonite as thickener can obtain the dispersed oil suspending agent with vegetable oil through grinding.

Biological Examples:

Embodiment 1:

The preventive effect that nicosulfuron and fluroxypyr are used with corn field weed sees Table

The place: period is investigated in the Xinyi: the 20 day time behind the medicine: 2010

Conclusion: the actual preventive effect that nicosulfuron and fluroxypyr are used with is greater than theoretical preventive effect, illustrates that nicosulfuron and fluroxypyr use with and have synergistic effect.

Claims

1. the Herbicidal combinations that contains nicosulfuron and fluroxypyr is characterized in that comprising compound (A) nicosulfuron and compound (B) fluroxypyr, and the weight ratio between compound in the Herbicidal combinations (A) and the compound (B) generally is:

2. Herbicidal combinations according to claim 1, the active constituent content that it is characterized in that composition are 1-90% (weight).

3. according to claim 1 and claim 2, but it is characterized in that said composition being processed into wetting powder, water dispersible granules dispersed oil suspending agent.