CN104522021A - Herbicide composition containing nicosulfuron, halosulfuron-methyl and atrazine - Google Patents

Abstract

The invention relates to a herbicide composition containing nicosulfuron, halosulfuron-methyl and atrazine. The herbicide composition contains effective components including nicosulfuron, halosulfuron-methyl and atrazine. The herbicide composition disclosed by the invention has a synergistic effect and is remarkably better than each independently-used agent in effect on preventing and removing annual weeds in corn fields; and by using the herbicide composition, the herbicide controlling spectrum is widened, meanwhile, the dosage is reduced, the generation of herbicide resistance of the weeds is delayed, and the environment pollution is relieved.

Description

Herbicidal combinations containing nicosulfuron and halosulfuronmethyl and atrazine

Technical field

The invention belongs to technical field of pesticide, be specifically related to the Herbicidal combinations that a kind of Synergistic that is active ingredient with nicosulfuron, halosulfuronmethyl, atrazine responds, be applicable to prevent and kill off corn field annual weed.

Background technology

Nicosulfuron (Nicosulfuron), sulfonylurea systemic herbicide, can be weeds cauline leaf and root absorption, conduct in plant corpus subsequently, cause sensitive plant growth retardation, cauline leaf chlorisis, withered gradually, generally death in 20-25 days, but when temperature is lower, needed to some perennial weed the longer time.Dispenser good drug efficacy before 4 leaf phases after bud, when seedling is large, dispenser drug effect declines.This medical instrument has activity of weeding before bud, but activity is comparatively low after bud, can prevent and kill off annual and perennial grassy weed, part broad leaved weed.Test shows, the weeds strong to Drug Sensitivity have And-gather grass, green foxtail, wild oat, Amaranthus retroflexus; The medium weeds of susceptibility have Ben Shi knotweed, rule grass, kitchen garden, Monochoria vaginalis, Siberian cocklebur and piemarker, nutgrass flatsedge; The poor weeds of susceptibility mainly contain lamb's-quarters, black nightshade, Commelina communis, summer cypress and weasel hemp nettle.

Halosulfuronmethyl (halosulfuron-methrl), for sulfonylurea wide spectrum selectivity inner-adsorption conduction-type herbicide, absorbed mainly through root system, also absorb by cauline leaf, shift rapidly in weeds plant body, Developing restraint, weeds are dead gradually, annual broadleaf weed and sedge weed can be prevented and kill off, be applicable to the crop such as corn, paddy rice.

Atrazine (atrazine) is sym-trinitrobenzene corn herbicide, absorbs and upwards conduct mainly through plant root, suppress the photosynthesis of weeds, make it withered, its herbicide spectrum is comparatively wide, can prevent and kill off multiple annual gramineae and broad leaved weed.Be applicable to the dry crops such as corn, Chinese sorghum, sugarcane, fruit tree, nursery, forest land and prevent and kill off lady's-grass, barnyard grass, green foxtail, nutgrass flatsedge, amur foxtail, knotweed, lamb's-quarters, Cruciferae, pulse family weeds, especially there is good selectivity (because having detoxication mechanisms in Corn) to corn, also having certain inhibitory action to some perennial weed.

The present inventor conducts in-depth research nicosulfuron, halosulfuronmethyl, atrazine mixture, find that nicosulfuron, halosulfuronmethyl, atrazine mixture have Synergistic to respond, especially there is obvious Synergistic to respond to Sorghum propinquum (Sorghum propinquum) green foxtail (Setaira viridis (L.) Beauv), the rhizome of nutgrass flatsedge (Cyperus rotundus L.), expand herbicide spectrum.The present invention possesses the prospect of industrial applications, by certain technological means, can excipient be the formulation that suspending agent, oil-suspending agent, water dispersible granules, wetting powder etc. are convenient to agriculturally use.

Nicosulfuron, halosulfuronmethyl, atrazine composite without relevant report.

Summary of the invention

The object of the invention is to solve in prior art to farmland weed develop immunity to drugs problem and actual control efficiency poor, provide a kind of efficient, low toxicity, quick-acting are good and the lasting period is long, are conducive to the Herbicidal combinations of the farmland weed comprehensive regulation.

Another object of the present invention is used for preventing and kill off farmland weed by this Herbicidal combinations, is particularly useful for preventing and kill off corn field annual weed etc.

Technical scheme of the present invention is: a kind of Herbicidal combinations containing nicosulfuron and halosulfuronmethyl and atrazine, active ingredient is nicosulfuron and halosulfuronmethyl and atrazine, the percentage by weight of nicosulfuron in Herbicidal combinations is 0.1% ~ 15%, the percentage by weight of halosulfuronmethyl in Herbicidal combinations is 0.1% ~ 15%, the percentage by weight of atrazine in Herbicidal combinations is 0.1% ~ 60%, and all the other are allow in agricultural chemicals to use and acceptable auxiliary element.

Described Herbicidal combinations according to well known to a person skilled in the art method, can be selected suitable pesticidal preparations auxiliary element, can be processed into the application forms that the applicable agricultural productions such as suspending agent, oil-suspending agent, water dispersible granules, wetting powder use.

The auxiliary element that the present invention uses comprises wetting agent, stabilizing agent, dispersant, disintegrant, thickener, pH adjusting agent, defoamer, antifreezing agent, filler etc., be all auxiliary agent conventional in Pesticide formulation, concrete composition and consumption are determined by test according to recipe requirements.

Herbicidal combinations provided by the invention, is applicable to prevent and kill off corn field annual weed.

The frequency of administration of Herbicidal combinations provided by the invention and amount of application change with crops, weeds, weather condition and have small variations, can by the object using suitable dosage reach effectively control.

Product described in the invention can the form of finished product preparation provide, and namely in composition, each material mixes, and the composition of composition also can the form of single dose provide, and directly mixes in tank or bucket, be then diluted to required concentration before using.

Compared with prior art, the invention has the advantages that:

Triple combination of the present invention (i.e. nicosulfuron halosulfuronmethyl atrazine) can solve weed killer herbicide single or two yuan use time deficiency, expand herbicide spectrum, and composition has Synergistic response, especially to Sorghum propinquum (Sorghum propinquum), green foxtail (Setairaviridis (L.) Beauv), the rhizome of nutgrass flatsedge (Cyperus rotundus L.) has the response of obvious Synergistic, excellent fix can be provided for preventing and kill off of corn field annual weed, especially to Sorghum propinquum (Sorghum propinquum) green foxtail (Setaira viridis (L.) Beauv), the corn field of the rhizome of nutgrass flatsedge (Cyperus rotundus L.) advantage weeds, for the corn field weed comprehensive regulation, there is positive effect.

Embodiment

In order to make object of the present invention, technical scheme and advantage more short and sweet, the following specific embodiment of the present invention is described, but the present invention is only limitted 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 amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.

Example of formulations 1:46% nicosulfuron halosulfuronmethyl atrazine water dispersible granule.

Above-mentioned material is added in cone-type mixer together and mixes; pulverize by airslide disintegrating mill; material after pulverizing mixes through cone-type mixer again; mixed fineness of materials 98% is by 600 mesh standard sieves; add in kneader and be kneaded into plasticity material; finally this material is put into Squeezinggranulator extruder grain, after granulation, after drying, screening, namely obtain 46% nicosulfuron halosulfuronmethyl atrazine water dispersible granule.

Example of formulations 2:30% nicosulfuron halosulfuronmethyl atrazine wetting powder.

Above-mentioned material is added in cone-type mixer together and mixes, pulverize by airslide disintegrating mill, material after pulverizing is again through cone-type mixer mixing, and mixed fineness of materials 98%, by 600 mesh standard sieves, obtains 30% nicosulfuron halosulfuronmethyl atrazine wetting powder.

Example of formulations 3:35% nicosulfuron halosulfuronmethyl atrazine suspending agent.

Pulverized in advance in proportion by above-mentioned formula, then add in sand mill and grind, after high shear mixing, allotment obtains 35% nicosulfuron halosulfuronmethyl atrazine suspending agent of corresponding percentage by weight.

Example of formulations 4:23.5% nicosulfuron halosulfuronmethyl atrazine 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 stage sand grinding machine to grind, fineness of materials 98% after grinding is by discharging after 1-5um, material puts into high-shear emulsifying still again together with the organobentonite dissolved in advance, namely can be made into the 23.5% nicosulfuron halosulfuronmethyl atrazine oil-suspending agent that flowing to property is good after emulsification.

Assays Example 1: nicosulfuron, halosulfuronmethyl, atrazine and the composite Toxicity Determination to Sorghum propinquum (Sorghum propinquum), green foxtail (Setaira viridis (L.) Beauv), the rhizome of nutgrass flatsedge (Cyperus rotundus L.) thereof are tested.

Evaluate weed killer herbicide associated form (NY/T 1155.7-2006) according to Colby method, its formula is as follows:

$E_0=\frac{A\×B\×C\×\·\·\·N}{{100}^{(n-1)}}$

In formula: A be nicosulfuron alone with certain dosage time fresh weight inhibition to target weeds;

B be halosulfuronmethyl alone with certain dosage time fresh weight inhibition to target weeds;

C be atrazine alone with certain dosage time fresh weight inhibition to target weeds;

N is the weed killer herbicide kind number of mixture;

E ₀for the theoretical value to target weeds fresh weight inhibition when nicosulfuron, halosulfuronmethyl, atrazine three kinds of pharmacy mix;

E is nicosulfuron, halosulfuronmethyl, atrazine three kinds of pharmacy mix time to target weeds fresh weight inhibition be contrast measured value.

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

Table 1, nicosulfuron, halosulfuronmethyl, atrazine and the composite Toxicity Determination result to green foxtail thereof.

Evaluate weed killer herbicide associated form according to Colby method, table one data show, and nicosulfuron, halosulfuronmethyl, atrazine triple combination are remarkable to green foxtail (Setaira viridis (L.) Beauv) synergistic effect, E ₀-E value is all greater than 20%.

Table 2, nicosulfuron, halosulfuronmethyl, atrazine and the composite Toxicity Determination result to the rhizome of nutgrass flatsedge (Cyperusrotundus L.) thereof.

Evaluate weed killer herbicide associated form according to Colby method, table two data show, and nicosulfuron, halosulfuronmethyl, atrazine triple combination are remarkable to the rhizome of nutgrass flatsedge (Cyperus rotundus L.) synergistic effect, E ₀-E value is all greater than 20%.

Table 3, nicosulfuron, halosulfuronmethyl, atrazine and the composite Toxicity Determination result to Sorghum propinquum (Sorghum propinquum) thereof.

Evaluate weed killer herbicide associated form according to Colby method, table two data show, and nicosulfuron, halosulfuronmethyl, atrazine triple combination are remarkable to Sorghum propinquum (Sorghum propinquum) synergistic effect, E ₀-E value is all greater than 20%.

Assays Example 2: prevent and kill off corn field annual weed field control effectiveness test.

Table 3, nicosulfuron, halosulfuronmethyl, atrazine composition are to preventing and kill off corn field annual weed field control effectiveness test result.

In sum, instant component is reasonable, nicosulfuron halosulfuronmethyl atrazine triple combination has Synergistic response, especially to Sorghum propinquum (Sorghum propinquum), green foxtail (Setaira viridis (L.) Beauv), the rhizome of nutgrass flatsedge (Cyperus rotundus L.) has remarkable synergy response effect, expand herbicide spectrum, for corn field is especially with Sorghum propinquum (Sorghum propinquum), green foxtail (Setaira viridis (L.) Beauv), the corn field that the rhizome of nutgrass flatsedge (Cyperus rotundus L.) is advantage weeds provides excellent weed control solution, be applicable to prevent and kill off corn field annual weed.

Claims (4)

1. one kind contains the Herbicidal combinations of nicosulfuron and halosulfuronmethyl and atrazine, it is characterized in that: active ingredient is nicosulfuron and halosulfuronmethyl and atrazine, the percentage by weight of nicosulfuron in Herbicidal combinations is 0.1% ~ 15%, the percentage by weight of halosulfuronmethyl in Herbicidal combinations is 0.1% ~ 15%, and the percentage by weight of atrazine in Herbicidal combinations is 0.1% ~ 60%.

2. a kind of Herbicidal combinations containing nicosulfuron and halosulfuronmethyl and atrazine according to claim 1, is characterized in that: described Herbicidal combinations also contains pesticidal preparations auxiliary element, to make the application forms of applicable agricultural use.

3. a kind of Herbicidal combinations containing nicosulfuron and halosulfuronmethyl and atrazine according to claim 2, is characterized in that: its formulation is the one in suspending agent, oil-suspending agent, water dispersible granules, wetting powder.

4. a kind of Herbicidal combinations containing nicosulfuron and halosulfuronmethyl and atrazine according to claim 1 is to prevent and kill off the application in corn field annual weed.