CN103004798A - Method for producing water dispersible granule containing diflufenican and oxadiazon - Google Patents

Abstract

The invention belongs to the field of pesticides and herbicides, and in particular relates to a method for producing a water dispersible granule containing diflufenican and oxadiazon. The water dispersible granule contains the following ingredients in content by weight: 1-30 percent of diflufenican, 1-60 percent of oxadiazon, 5-20 percent of surfactant, and 10-80 percent of filler; and the total weight content of all the ingredients is 100 percent. The composition is mainly used for controlling annual broadleaf weeds and gramineous weeds in garlic, wheat and paddy fields. The composition has the characteristics of synergistic effect, expansion in herbicidal spectrum, delay in herbicide resistance and low cost.

Description

Contain Diflufenican with the production method of the water dispersible granules of Evil humulone

Technical field

The invention belongs to the agricultural herbicide field, particularly contain Diflufenican with the production method of the water dispersible granules of Evil humulone.

Background technology

Diflufenican belongs to the carotenoid biosynthesis inhibitor, is the selectivity cornfield herbicidal of wide spectrum, causes Destruction of Chlorophyll and cell rupture, and plant is dead.To impose on autumn sowing Wheat and barley field before 125～250g/ha bud or behind the bud, prevent and kill off grass family and broad leaved weed, especially clearvers, Veronica and violet weeds.This medicament has following characteristics: broad weed-killing spectrum; But keeping from ill weeds; The drug effect phase is long in the soil; Efficacy stability; Can be mixed with other weed killer herbicides, enlarge the herbicide spectrum.

The Evil humulone has another name called Lonster, farming is thought it, is before the selectivity bud, post-emergence herbicide.Main by weeds young shoot or cauline leaf absorption.Weeds effect to germination period is best, and is along with weeds grow up and effect decline, substantially invalid to the strain weeds.Be applicable to the crops such as paddy rice, soybean, cotton, sugarcane and orchard and prevent and kill off the annual gramineae broad leaved weeds such as barnyard grass, moleplant seed, ditch millet, difformed galingale herb, globe daisy alkali grass, Monochoria vaginalis, Sagittaria pygmaea, Drilgrass and Amaranthaceae, Chenopodiaceae, Euphorbiaceae, Oxalidaceae, Convolvulaceae.

The different cultivars composition carries out composite, is the modal method of control resistant weed.Heterogeneity is carried out composite, can improve preventive effect, enlarges the consumption of herbicide spectrum, minimizing active ingredient, saves drug cost, reduces environmental pollution, is the important means of integrated control weeds in field.

Through retrieval, do not find Diflufenican at present Yu the Evil humulone is composite and the document of application.

Summary of the invention

For addressing the above problem, what the object of the present invention is to provide a kind of good drug efficacy contains Diflufenican with the production method of the water dispersible granules of Evil humulone.

Technical scheme of the present invention is: a kind ofly contain Diflufenican with the production method of the water dispersible granules of Evil humulone:

The active ingredient Diflufenican with the Evil humulone adds in the filler, and is added surfactant, after mixing therein in mixer, after pulverizing through airslide disintegrating mill again, add 10～25% water, then through after kneader kneading, Squeezinggranulator granulation, the drying room drying, sieve with screening machine at last; Its component and weight content are as follows:

Diflufenican 1%～30%

Evil humulone 1%～60%

Surfactant 5%～20%

Filler 10%～80%

Each composition weight content sum is 100%;

Described surfactant is selected from one or more in emulsifier, dispersant, wetting agent or the bleeding agent.

The active ingredient Diflufenican can be buied by various commercial channel Yu the Evil humulone all is weed killer herbicides well known in the art.

Surfactant can be emulsifier, dispersant, wetting agent or bleeding agent, can be nonionic or anionic, also can be two or more compound uses.

Described emulsifier is selected from agricultural newborn 500#(alkyl benzene calcium sulfonate), OP series phosphate (polyoxyethylene nonylphenol ether phosphate), 600# phosphate (phenyl phenol polyoxyethylene ether phosphate), styrene polyoxyethylene ether ammonium sulfate salt, alkyl biphenyl ether disulfonic acid magnesium salts, triethanolamine salt, the newborn 400#(benzyl dimethyl phenol polyoxy ethyl ether of farming), Nongru-700 #(alkylphenol-formaldehyde resin polyoxy ethyl ether), peaceful newborn 36#(phenethyl fluosite polyoxy ethyl ether), the newborn 1600#(phenethyl phenol polyoxy ethyl polypropylene-base ether of farming), ethylene oxide-propylene oxide block copolymer, OP series (polyoxyethylene nonylphenol ether), BY series (castor oil polyoxyethylene ether), the newborn 33#(alkylaryl polyoxyethylene poly-oxygen propylene aether of farming), sapn series (sorbitol anhydride monostearate), in tween series (anhydrous sorbitol resin acid ester APEO) or the AEO series (fatty alcohol-polyoxyethylene ether) one or more.

Described dispersant is selected from one or more in polycarboxylate, lignosulfonates, alkylphenol polyoxyethylene formaldehyde condensation products sulphate, alkyl benzene calcium sulfonate, naphthalene sulfonic acid-formaldehyde condensation product sodium salt, alkylphenol polyoxyethylene, aliphatic amine polyoxyethylene ether, aliphatic acid polyethenoxy ether or the fatty acid glyceride APEO.

Described wetting agent is selected from one or more in lauryl sodium sulfate, neopelex, Nekal BX, wetting and penetrating agent F, spaonin powder, silkworm excrement or the soapberry powder.

Described filler is selected from one or more in kaolin, diatomite, bentonite, attapulgite, White Carbon black, starch or the precipitated calcium carbonate.

Material described above all is to well known to a person skilled in the art material, can buy by market.

Herbicidal composition provided by the invention is used for the weeds such as control wheat paddock, garlic field barnyard grass, lady's-grass, green foxtail, moleplant seed, eleusine indica, kitchen garden, clearvers, amaranth, lamb's-quarters, piemarker, black nightshade, cyperus iria, difformed galingale herb, and can reduce the application dosage of each active ingredient, reduce cost, reduce and pollute.

Beneficial effect of the present invention is: 1, the Herbicidal combinations synergistic effect is obvious, and drug effect significantly improves; 2, the Herbicidal combinations drug effect improves, and the field consumption of active ingredient descends, and has reduced production and use cost, reduces residue of pesticide and environmental pollution; 3, Herbicidal combinations is comprised of the active ingredient of different mechanism of action, and action site increases, and is conducive to overcome and delay the generation of herbicide resistance, is the important means of integrated control weeds in field.

Embodiment

Specify the present invention below in conjunction with embodiment.Percentage all is weight percentage among the embodiment, and the treatment dosage of field efficacy is effective ingredient consumption.

Embodiment 1

Present embodiment contain Diflufenican with the production method of the water dispersible granules of Evil humulone: with the active ingredient Diflufenican He the Evil humulone add in the filler; and add therein surfactant; after in mixer, mixing; after pulverizing through airslide disintegrating mill again; add 17% water; then through after kneader kneading, Squeezinggranulator granulation, the drying room drying, sieve with screening machine at last.Its component and weight content are as follows:

Diflufenican 20%

Evil humulone 35%

Surfactant 11%

Filler 34%

The surfactant of present embodiment is the mixing of dispersant, wetting agent.Dispersant is calcium lignosulfonate, content 9%; Wetting agent is lauryl sodium sulfate, content 2%; Filler is white carbon and kaolin, and wherein white carbon content is 10%, and kaolin content is 24%.

Embodiment 2

The difference of present embodiment and embodiment 1 is: its component and weight content are:

Diflufenican 30%

Evil humulone 40%

Surfactant 12%

Filler 18%

The surfactant of present embodiment is the mixing of dispersant, wetting agent.Dispersant is the alkylnaphthalene sulfonate formaldehyde condensation products, content 9%; Wetting agent is lauryl sodium sulfate, content 3%; Filler is attapulgite.

Embodiment 3

The difference of present embodiment and embodiment 1 is: its component and weight content are:

Diflufenican 20%

Evil humulone 20%

Surfactant 5%

Filler 55%

The surfactant of present embodiment is the mixing of dispersant, emulsifier.Dispersant is polycarboxylate, content 4%; Emulsifier is agricultural newborn OP-10, content 1%; Filler is diatomite and bentonite, and wherein diatomite content is 20%.

Embodiment 4

The difference of present embodiment and embodiment 1 is: its component and weight content are:

Diflufenican 10%

Evil humulone 15%

Surfactant 6%

Filler 69%

The surfactant of present embodiment is emulsifier 600 # phosphate and castor oil polyoxyethylene ether, and consumption is respectively 4% and 2%; Filler is starch and precipitated calcium carbonate, and wherein content of starch is 26%.

The below uses embodiment 1, embodiment 2 to carry out field control effectiveness test with Comparative Examples for the garlic field weed, and so that beneficial effect of the present invention to be described better, result of the test is as shown in table 1 below.In the table 1, embodiment 1:55% pyrrole Fu Cao An Evil humulone wetting powder; Embodiment 2:70% pyrrole Fu Cao An Evil humulone water dispersible granules; Comparative Examples 1:50% Diflufenican wetting powder; Comparative Examples 2:25% Evil humulone missible oil.

Establish embodiment medicament, Comparative Examples medicament and do not use totally 9 processing of any medicament in this field test, each is processed and repeats 4 times, processes the residential quarter for totally 36, after planting carries out the soil spraying in garlic.Every processing residential quarter is got 3 points at random, every some 0.33m2, the healthy strain number of 20 days, 40 days investigation each point various weeds after medication respectively, behind the medicine 40 days in investigation weeds strain number, investigation fresh weight preventive effect.The results are shown in Table 1, table 2 and table 3.

Prevented and kill off garlic field weed strain preventive effect behind table 1 medicine in 20 days

Prevented and kill off garlic field weed strain preventive effect behind table 2 medicine in 40 days

Prevented and kill off garlic field weed fresh weight preventive effect behind table 3 medicine in 40 days

Can find out from the result of the test of table 1, table 2 and table 3, behind the medicine behind 20 days and the medicine 40 days, embodiment 1 per hectare is used more than active ingredient 55 grams, embodiment 2 per hectares are used more than active ingredient 49 grams, the strain preventive effect of lady's-grass, eleusine indica, Amaranthus retroflexus and kitchen garden and fresh weight preventive effect all are significantly higher than Comparative Examples 1 per hectare use active ingredient 60 grams and Comparative Examples 2 per hectares to use active ingredient 37.5 grams, show by the pyrrole flutolanil with the Evil humulone has significant synergies after composite.Duration of test is observed, and garlic is without symptom of chemical damage, and test medicine is to garlic safety.

Claims (1)

1. production method that contains the water dispersible granules of Diflufenican and Evil humulone, it is characterized in that: with the active ingredient Diflufenican He the Evil humulone add in the filler, and add therein surfactant, after in mixer, mixing, after pulverizing through airslide disintegrating mill again, add 10～25% water, then through after kneader kneading, Squeezinggranulator granulation, the drying room drying, sieve with screening machine at last; Its component and weight content are as follows:

Diflufenican 1%～30%

Evil humulone 1%～60%

Surfactant 5%～20%

Filler 10%～80%

Each composition weight content sum is 100%;

Described surfactant is selected from one or more in emulsifier, dispersant, wetting agent or the bleeding agent.