CN1256019C - Weed-killing composition contg. dichloroguinolinic acid - Google Patents

Abstract

The present invention belongs to an improved herbicide composition, a preparation method thereof and application. The improved herbicide composition is a mixture composed of a compound (A), namely 3, 7-dichloro-8-quinolinecarboxylic acid. The improved herbicide composition can prevent and eliminate weeds in rape fields and can effectively prevent and eliminate various weeds, such as chickweed herbs, Lithospermum arvense L., wild shepherd's purse, lesser hypericum, Amaranthus retroflexus L., barnyard weeds, fatuoid, common crabgrass herbs, Indian lovegrass herbs, etc. The improved herbicide composition has high efficiency and broad spectrums for killing the weeds, and the weed killing spectrum is higher than that of the compound (A) or the compound (B).

Description

The Herbicidal combinations that contains dichloro quinolinic acid

Technical field:

The present invention relates to have the Herbicidal combinations that improves performance.

(quinclorac) dichloro quinolinic acid general by name of compound (A), chemistry 3.7-two chloro-8-Quinoline Carboxylic Acids by name are a kind of herbicide for paddy field.This weed killer herbicide can be used for the paddy field management of weeds, but for its use rape Tanaka, patent is also not mentioned both at home and abroad arrives; Therefore the back is unforeseen with the immixture of other compound.

Summary of the invention:

Herbicidal combinations provided by the invention, it is characterized in that comprising component (A) (quinclorac) (3.7-two chloro-8-Quinoline Carboxylic Acids) wherein as compound (A) and at least a specific other Herbicidal combinations (B) of active princlple formula (1) representative

Quizalofop-ethyl (B):

The active constituent content of Herbicidal combinations of the present invention is 1～90%wt.

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

(A) with quizalofop-ethyl (B) than being 1～50: 1 preferred 1～20: 1

Herbicidal combinations provided by the present invention possesses the characteristics of broad weed-killing spectrum, can effectively prevent and kill off rape Tanaka's weeds such as chickweed, corn gromwell, bitter cress, Stellaria alsine Grim., Amaranthus retroflexus, barnyard grass grass, wild oat, lady's-grass, india lovegrass.Preventive effect is significantly higher than the preventive effect of compound alone (A) or compound (B), and has reduced the application dosage of various active material significantly.

The present invention is used for the weeding of rape field, and weeds all sprout and do cauline leaf spraying processing.The method of handling can be reported composition before use the different activities component to be mixed well and carried out by adding formula.

Adoptable surface-active has anionic surfactant and nonionic surface active agent.The aliphatic alcohol sulfate that comprises Sulfates, alkylol polyoxyethylene groups ether sodium sulfate etc., the sodium alkyl sulfonate of Sulfonates, alkylbenzenesulfonate, alkylnaphthalene sulfonate, dialkyl succinylsuccinate sulfonate, monoalkyl phenyl polyoxyethylene groups ether succinic acid sulfonate, fatty alcohol ethylene oxide adduct sulfonate, alkylphenol formaldehyde condensation product ethylene oxide adduct sulfonate, fatty alcohol epoxy vinyl ether, alkylphenol-polyethenoxy base ether, the anhydrous sorbitol fatty acid ester, anhydrous sorbitol aliphatic acid polyethenoxy base ether, alkylphenol formaldehyde condensation product polyoxyethylene groups ether, sulfonation castor-oil plant alkoxide, quaternary ammonium salt derivative, the condensation product of oxirane and nonyl or octyl phenol is main product or base and the oxirane that does not dissociate by esterification, the alkalies and alkaline earth salt of sulfuric ester and sulfonic acid is as sulphonyl amber ester octyl group sodium in two ninth of the ten Heavenly Stems and such as the alkali of the macromolecule sulfonic acid derivative of sodium lignin sulfonate and calcium and carboxylate that the alkali salt condensation forms the anhydrous sorbierite of looking into dissolubility etc.That can give an example has farming breast No. 2000 series, petroleum sodium sulfonate, dodecyl sodium sulfates, draws back powder, ethoxylated dodecyl alcohol sodium sulfonate, tween series etc.

The present invention contains mixture, inertia supply line carrier and filler and one or more lubricants and the dispersant that contains various active components in the Herbicidal combinations wetting powder of dichloro quinolinic acid.Carrier is generally mineral inert substance such as potter's clay, kaolin, bentonite, talcum powder, diatomite etc.The wetting powder of the Herbicidal combinations of this invention contains the active component mixture of 1-90% (weight) (the more excellent 5-80% of being) usually, the dispersant of 0.25-25% (more excellent is 1-25%) (weight), 5-95% (weight) (more excellent is 5-80%) and inert solid carrier and filler.Form Herbicidal combinations jointly by them.

The suspending agent of Herbicidal combinations of the present invention is that water-soluble relatively poor active component is constantly stirred in water with emulsifier, dispersant, wetting agent etc., makes it evenly to disperse and suspend, so that spraying is used.Can suitably add thickener, antifreezing agent, defoamer etc. as required.Suitable suspending agent comprises the active component of 0.1-60% (weight) (the more excellent 3-50% of being).The upper limit is decided by the solubility limit of active component in solvent.

Herbicidal combinations pulvis of the present invention is through abrasive dust processing and get with active ingredient and fine grain dispergated solid matter such as talcum powder, natural clay and kaolin, bentonite, pyrophyllite or the diatomite of being.Pulvis contains effective composition and is approximately 0.1-50% (weight), and more excellent is 2-40%.

The preparation of granule of the present invention is that active ingredient is sprayed at particulate inert material surface with absorption property or active ingredient is adhered to carrier mass surface or particulate inert material surfaces such as sand, kaolin with adhesives such as polyvinyl alcohol, Sodium Polyacrylate or mineral oil, also can the active ingredient that some is suitable be processed into granule with the method for common manufacturing granular fertilizer.Its active constituent content of dispersible granules agent (weight) between 5-90% in the water spreads fertilizer over the fields active constituent content (weight) between 1-50% in the granule, between the preferred 1-25%.

Embodiment:

Following examples describe the present invention in detail.Embodiment mainly is in order to illustrate that this with bright, but not is used for limiting the present invention.

Embodiment 1 is the formulation preparation example, and embodiment 2 is a biological Examples,

Embodiment 1:

A: suspending agent

Active component A with 2% and 20% active component B with as the 0201B of emulsifier 5%, as wetting agent JFC, draw back powder and, in colloid mill, be ground to particle diameter and get final product below 5 microns as 3% of dispersant as 3% n-butanol of defoamer mixing successively.

The b wetting powder:

With the graininess white carbon of the neopelex as wetting agent of 40 parts of heavy compositions usefuls and 2 parts heavy, 10 parts of weights as adsorbent, 5 parts heavy in airslide disintegrating mill, form through ultramicro grinding as the sodium lignin sulfonate of dispersant and the kaolin of 43 parts of weights.

The c pulvis:

With mixing of 10 parts of heavy compositions usefuls and 90 parts of weights, in high speed disintegrator, pulverize and evenly form as the talcum powder of inert substance.

The d granule:

By the active ingredient composition of 20 parts of weights, the sodium lignin sulfonate of 20 parts of weights, 15 parts heavy dodecyl sodium sulfates, the kaolin of 25 parts of heavy polyvinyl alcohol and 25 parts of weights is made.

Embodiment 2, dichloro quinolinic acid and quizalofop-ethyl are used the preventive effect to rape field weed with

Place: Jiangsu, Xinyi

Dispenser period: the weeds 2-3 leaf phase is investigated: the 30 day time behind the medicine: 2002

Medicament	Consumption	The barnyard grass grass		Chickweed		Wild oat		Corn gromwell
										(gai/h m 2)	Actual preventive effect (%)	Expection preventive effect (%)	Actual preventive effect (%)	Expection preventive effect (%)	Actual preventive effect (%)	Expection preventive effect (%)	Actual preventive effect (%)	Expection preventive effect (%)
	Dichloro quinolinic acid	40	32.5		21.5		41.3		34.5
Dichloro quinolinic acid										80	67.8		53.4		68.9		71.3
	Dichloro quinolinic acid	120	81.2		67.8		78.4		82.5
Quizalofop-ethyl										4	21.4		65.2		72.3		73.4
	Dichloro quinolinic acid+quizalofop-ethyl	40+4	62.5	51.2	67.2	51.2	81.2	75.3	81.3										75.6
Dichloro quinolinic acid+quizalofop-ethyl										80+4	87.6	81.6	89.5	80.3	87.3	80.2	89.3	82.5
	Dichloro quinolinic acid+quizalofop-ethyl	120+4	93.5	85.3	95.4	87.6	96.4	91.3	94.3										87.4

Conclusion: the actual preventive effect that dichloro quinolinic acid and quizalofop-ethyl are used with is higher than it and uses the expectancy theory preventive effect with, can enlarge simultaneously to kill the grass spectrum, proves that dichloro quinolinic acid and quizalofop-ethyl have been used synergy with and careless spectrum effect is killed in expansion.

Claims (2)

1. a Herbicidal combinations that contains dichloro quinolinic acid is characterized in that comprising compd A (dichloro quinolinic acid) 3.7-two chloro-8-Quinoline Carboxylic Acid and compd Bs

The structural formula of A is:

The structural formula of compd B is:

Weight ratio between compound in the Herbicidal combinations (A) compound (B):

(A) be 1～50: 1 with quizalofop-ethyl (B)

2. composition according to claim 1, the effective component content that it is characterized in that composition is 1～90%wt.