CN104106571A - A weeding composition - Google Patents

Abstract

A weeding composition is disclosed. The weeding composition comprises following two effective components: an effective component a and an effective component b, wherein the effective component a is butafenacil, the effective component b is one of fluroxypyr (or an ester thereof) and triclopyr (or an ester thereof), the weight ratio of the effective component a to the effective component b is 10:1-1:30, preferably 1:1-1:10, and the sum of the weight of the effective component a and the weight of the effective component b is 1-80% of the weight of the composition. The weeding composition is suitable for weed control in orchards, bare places, vine crop fields, and cotton fields. The control effect of the composition is significantly enhanced than that of a single agent. The using amount of pesticides is reduced. Bad influences of the pesticides on the ecological environment are reduced. The weeding composition has an important significance for comprehensive control of weed resistance, and has great economic benefit and social benefit.

Description

A kind of Herbicidal combinations

Technical field

The present invention relates to a kind of agricultural weeding agent composition, is that to take butafenacil, fluroxypyr (or its ester type compound) or trichlopyr (or its ester type compound) be active ingredient.

Background technology

Butafenacil (butafenacil), non-selective uracil weeding agent, be mainly used in orchard, uncultivated area, Cotton Fields, vine crop field and prevent and kill off important broad leaved weed, grassy weed and sedge weed, also can be used for weeding before the crop seedlings such as wheat.

Pyridine fluoroacetic acid class weed killer herbicide is hormone herbicide, can be conducted by the blade of plant and root absorption, makes plant deformity, distortion dead, mainly prevents and kill off annual broadleaf weed, invalid to grassy weed.Kind mainly contains fluroxypyr, the different monooctyl ester of fluroxypyr, trichlopyr, triclopyr butoxyethyl ester etc.

The different monooctyl ester of fluroxypyr or fluroxypyr is applicable to gramineous crop field and fruit-bearing forest tea and prevents and kill off broad leaved weed, as broad leaved weeds such as clearvers, chickweed, field bindweed, kitchen garden, water peanut, acalypha copperleafs, trichlopyr or triclopyr butoxyethyl ester can be prevented and kill off broad leaved weed and the shrubs such as shrub lespedeza, aspen, elm, wormwood artemisia, radix bupleuri, balloonflower root, clematis, fern, abrotanum.

Trichlopyr or triclopyr butoxyethyl ester belong to inner sucting conduction type selective herbicide, by blade face and the Root Absorption of plant, and in plant corpus, are transmitted to complete stool, cause its root, stem, leaf deformity, reserve substance exhausts, and vascular bundle is by embolism or break, and plant is dead gradually.Gramineous crop has drug resistance to it.Be applicable to before forest afforestation the weeding filling of going out, safeguard fire line, hold up and educate pine tree and stand improvement, for uncultivated area, prevent and kill off broad leaved weed and woody plant, also can be used for gramineous crop as prevented and kill off broad leaved weed in the fields such as wheat, corn, oat, Chinese sorghum.

The inventor is on the basis of a large amount of indoor bioassay tests, find that butafenacil shows obvious synergistic effect to weeds with fluroxypyr (or its ester type compound), trichlopyr (or its ester type compound) respectively within the scope of certain mixed ratio, after further study, completed the present invention.

Butafenacil is composite without relevant report with fluroxypyr (or its ester type compound), trichlopyr (or its ester type compound) respectively.

Summary of the invention

Technical problem to be solved: the object of the invention is to solve the deficiency that existing weed killer herbicide is actual in using, provide a kind of efficient, low toxicity, low cost, quick-acting good, and the lasting period is long, is conducive to the Herbicidal combinations of the weeds comprehensive regulation.

Another object of the present invention is that this Herbicidal combinations is applied to prevent and kill off orchard, uncultivated area, vine crop field, Cotton Fields weeds.

Technical scheme of the present invention is: a kind of Herbicidal combinations, comprise two kinds of active ingredient: active ingredient a and active ingredient b, wherein active ingredient a is butafenacil, and active ingredient b is a kind of in fluroxypyr (or its ester type compound) and trichlopyr (or its ester type compound); The ratio of weight and number of active ingredient a and active ingredient b is 10:1-1:30, and preferred weight portion rate is 1:1-1:10; Two kinds of active ingredient weight summations percentage by weight in composition is 1%-80%, and surplus is the upper acceptable insecticides adjuvant of agricultural.

Described Herbicidal combinations can, according to well known to a person skilled in the art method, be mixed with the application forms of the applicable agricultural uses such as suspending agent, oil-suspending agent, water dispersible granules, wetting powder, effervescent tablet, granulae effervescentes.

Described Herbicidal combinations also contains acceptable insecticides adjuvant in the required agricultural of preparation pesticidal preparations, be selected from one or more in solvent, emulsifier, wetting agent, stabilizing agent, dispersant, bleeding agent, thickener, defoamer, antifreezing agent, disintegrant, binding agent, filler, carrier, medium, surfactant, be known substance, various auxiliary agents conventional in pesticidal preparations, according to different situations, can change to some extent, be not particularly limited.

The production technology of the described various application forms of Herbicidal combinations all belongs to existing known technology, does not repeat them here.

Herbicidal combinations provided by the invention, can be applicable to prevent and kill off orchard, uncultivated area, vine crop field, Cotton Fields weeds.

Herbicidal combinations provided by the invention, adopts the method for spraying to use conventionally, also can adopt as required other operation techniques of the upper application of agricultural.

Herbicidal combinations provided by the invention has following beneficial effect:

1, Herbicidal combinations provided by the invention, in certain ratio range, show obvious synergistic effect, the control efficiency of composition is significantly improved than single dose, reduced the using dosage of agricultural chemicals, reduced medication number of times, reduce drug cost, reduced the adverse effect of agricultural chemicals to ecotope.

2, Herbicidal combinations provided by the invention, the combination of two kinds of active ingredients, has expanded herbicidal spectrum, and a drug can solve various weeds problems, has made up defect and limitation when single dose is used.

3, Herbicidal combinations provided by the invention, two kinds of active ingredient mechanism of action are different, can overcome the shortcoming that long-term single use easily produces resistance, extend the service life of medicament, the comprehensive regulation important in inhibiting to Weed Resistance.

Embodiment

In order to make object of the present invention, technical scheme and advantage more short and sweet, the present invention describes with following specific embodiment, but the present invention only limits to absolutely not these examples.The following stated is only the good embodiment of the present invention, only for describing the present invention, can not be interpreted as the restriction to scope of the present invention.It should be pointed out that all any modifications of making within the spirit and principles in the present invention, be equal to replacement and improvement etc., within all should being included in protection scope of the present invention.

Embodiment mono-: biologicall test embodiment.

Butafenacil, the different monooctyl ester of fluroxypyr and composite to field bindweed (Convolvulus arvensis, CONAR=field bindweed), dayflower (Commelina communis, COMCO=dayflower), the interior toxicity test of Bermuda grass (Cynodon dactylon, CYNDA=Bermuda grass).

According to Gowing method, evaluate weed killer herbicide associated form (NY/T1155.7-2006), its formula is as follows:

$E_0=X+Y-\frac{X\×Y}{100}.$

In formula:

X is butafenacil fresh weight inhibiting rate to target weeds when alone with certain dosage;

Y is pyridine fluoroacetic acid class weed killer herbicide (in the different monooctyl ester of fluroxypyr or fluroxypyr or trichlopyr or triclopyr butoxyethyl ester a kind of) fresh weight inhibiting rate to target weeds when alone with certain dosage;

E ₀theoretical value or desired value to target weeds fresh weight inhibiting rate during for two kinds of pharmacy mix of butafenacil, pyridine fluoroacetic acid class weed killer herbicide (in the different monooctyl ester of fluroxypyr or fluroxypyr or trichlopyr or triclopyr butoxyethyl ester a kind of);

When E is two kinds of pharmacy mix of butafenacil, pyridine fluoroacetic acid class weed killer herbicide (in the different monooctyl ester of fluroxypyr or fluroxypyr or trichlopyr or triclopyr butoxyethyl ester a kind of) to target weeds fresh weight inhibiting rate measured value or the observation for contrast.

Evaluation criterion: as E ﹣ E ₀during > 10%, be expressed as synergistic function; As ﹣ 10%≤E ﹣ E ₀in the time of≤10%, show as collaborative summation action; As E ﹣ E ₀during < ﹣ 10%, show as joint action of antagonism.

15 days butafenacils, the different monooctyl ester of fluroxypyr and the composite result of the tests to CONAR, COMCO, CYNDA in greenhouse thereof after table one, medicine.

According to Colby method, evaluate weed killer herbicide associated form, table one data show, butafenacil, the different monooctyl ester binary combination of fluroxypyr are to field bindweed (Convolvulus arvensis, CONAR), dayflower (Commelina communis, COMCO), Bermuda grass (Cynodon dactylon, CYNDA) synergistic effect is remarkable, E-E ₀value is all greater than 10%.

Table two, butafenacil, triclopyr butoxyethyl ester and composite to the result of the test of 15 days after LESBI, CLEFL, IMPCY medicine in greenhouse.

According to Colby method, evaluate weed killer herbicide associated form, table two data show, butafenacil, triclopyr butoxyethyl ester binary combination are to shrub lespedeza (Lespedeza bicolor, LESBI), clematis (Clematis florida, CLEFL), cogongrass (Imperata cylindrica, IMPCY) synergistic effect is remarkable, E-E ₀value is all greater than 10%.

Embodiment different monooctyl ester water dispersible granules preparation of butafenacil fluroxypyr in bis-: 30%.

Above-mentioned material is added in cone-type mixer and mixed together; by airslide disintegrating mill, pulverize; material after pulverizing mixes through cone-type mixer again; mixed fineness of materials 98% is by 600 mesh standard sieves; add and in kneader, be kneaded into plasticity material; finally this material is put into Squeezinggranulator extruder grain, granulation makes the different monooctyl ester water dispersible granules of 30% butafenacil fluroxypyr after being dried, sieving.

Tri-: 24% butafenacil fluroxypyr wetting powders of embodiment.

Above-mentioned material is added in cone-type mixer and mixed together, by airslide disintegrating mill, pulverize, material after pulverizing mixes through cone-type mixer again, and mixed fineness of materials 98%, by 600 mesh standard sieves, obtains the butafenacil fluroxypyr wetting powder of corresponding percentage by weight.

Embodiment tetra-(24% butafenacil fluroxypyr suspending agent).

Above-mentioned formula is pulverized in proportion in advance, then added in sand mill and grind, after high shear mixing, allotment makes 24% butafenacil fluroxypyr suspending agent.

Embodiment five (the different monooctyl ester oil-suspending agent of 10% butafenacil fluroxypyr).

Above-mentioned material (except organobentonite) is joined in reactor mixer together, stir 2 hours, open pan feeding valve at the bottom of still, material is injected to stage sand grinding machine to be ground, fineness of materials 98% after grinding is by discharging after 1-5um, material is put into high-shear emulsifying still together with the organobentonite good with prior dissolving again, can be made into the good different monooctyl ester oil-suspending agent of 10% butafenacil fluroxypyr of flowing to property after emulsification.

Embodiment six (46% butafenacil triclopyr butoxyethyl ester water dispersible granules).

Above-mentioned material is added in cone-type mixer and mixed together; by airslide disintegrating mill, pulverize; material after pulverizing mixes through cone-type mixer again; mixed fineness of materials 98% is by 600 mesh standard sieves; add and in kneader, be kneaded into plasticity material; finally this material is put into Squeezinggranulator extruder grain, granulation makes 46% butafenacil triclopyr butoxyethyl ester water dispersible granules after being dried, sieving.

Embodiment seven (58% butafenacil trichlopyr wetting powder).

Above-mentioned material is added in cone-type mixer and mixed together, by airslide disintegrating mill, pulverize, material after pulverizing mixes through cone-type mixer again, and mixed fineness of materials 98%, by 600 mesh standard sieves, obtains 58% butafenacil trichlopyr wetting powder.

Embodiment eight (8% butafenacil trichlopyr suspending agent).

Above-mentioned formula is pulverized in proportion in advance, then added in sand mill and grind, after high shear mixing, allotment makes 8% butafenacil trichlopyr suspending agent.

Embodiment nine (7% butafenacil triclopyr butoxyethyl ester oil-suspending agent).

Above-mentioned material (except organobentonite) is joined in reactor mixer together, stir 2 hours, open pan feeding valve at the bottom of still, material is injected to stage sand grinding machine to be ground, fineness of materials 98% after grinding is by discharging after 1-5um, material is put into high-shear emulsifying still together with the organobentonite good with prior dissolving again, can be made into 7% good butafenacil triclopyr butoxyethyl ester oil-suspending agent of flowing to property after emulsification.

Embodiment ten: field control effectiveness test.

(1) prevent and kill off lichee field weed.

Test site is positioned at Boluo County's Longhua Zhen Litchi Garden, weeds include but are not limited to field bindweed (Convolvulus arvensis, CONAR=field bindweed), dayflower (Commelina communis, COMCO=dayflower), Bermuda grass (Cynodon dactylon, CYNDA=Bermuda grass), cogongrass (Imperata cylindrica, IMPCY=cogongrass)

Table three, butafenacil, the different monooctyl ester herbicidal composition of fluroxypyr are to Litchi Garden weeds field control effectiveness test result.

Table four, butafenacil, fluroxypyr herbicidal composition are to Litchi Garden weeds field control effectiveness test result.

(2) prevent and kill off Mango Fruit Garden weeds.

Test site is positioned at cities and towns, Sanya, Hainan precipice, weeds include but are not limited to shrub lespedeza (Lespedeza bicolor, LESBI=shrub lespedeza), clematis (Clematis florida, CLEFL=clematis), Bermuda grass (Cynodon dactylon, CYNDA=Bermuda grass), cogongrass (Imperata cylindrica, IMPCY=cogongrass).

Table five, butafenacil, trichlopyr herbicidal composition are to Mango Fruit Garden weeds field control effectiveness test.

Table six, butafenacil, trichlopyr herbicidal composition are to Mango Fruit Garden weeds field control effectiveness test.

By above field test results, show, Herbicidal combinations control efficiency of the present invention is significantly improved than single dose, reduced the using dosage of agricultural chemicals, reduced medication number of times, reduced drug cost, expanded herbicidal spectrum, a drug can solve various weeds problems simultaneously, has made up defect and limitation when single dose is used.

Claims (5)

1. a Herbicidal combinations, it is characterized in that, comprise two kinds of active ingredient: active ingredient a and active ingredient b, wherein active ingredient a is butafenacil, active ingredient b is a kind of in fluroxypyr (or its ester type compound) and trichlopyr (or its ester type compound), and the ratio of weight and number of active ingredient a and active ingredient b is 10:1-1:30.

2. a kind of Herbicidal combinations according to claim 1, is characterized in that, the ratio of weight and number of active ingredient a and active ingredient b is 1:1-1:10.

3. a kind of Herbicidal combinations according to claim 1, is characterized in that: two kinds of active ingredient weight summations percentage by weight in composition is 1%-80%, and surplus is insecticides adjuvant.

4. according to a kind of Herbicidal combinations described in claim 1 or 2 or 3, it is characterized in that: the formulation of described Herbicidal combinations is a kind of in suspending agent, oil-suspending agent, water dispersible granules, wetting powder, effervescent tablet, granulae effervescentes.

5. a kind of Herbicidal combinations according to claim 1, is applicable to prevent and kill off orchard, uncultivated area, vine crop field, Cotton Fields weeds.