CN103392703B - Weed killer composition used for cassava field - Google Patents
Weed killer composition used for cassava field Download PDFInfo
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- CN103392703B CN103392703B CN201310330201.3A CN201310330201A CN103392703B CN 103392703 B CN103392703 B CN 103392703B CN 201310330201 A CN201310330201 A CN 201310330201A CN 103392703 B CN103392703 B CN 103392703B
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Abstract
The invention discloses a weed killer composition used for a cassava field. The weed killer composition comprises the following ingredients in mass percentage: 3-20% of fluoroglycofen-ethyl and 5-30% of clethodim which are included in weed killer active ingredients, 10-25% of a solvent, 5-15% of an emulsifying agent, 0.5-4% of a stabilizing agent and 20-70% of water, wherein the weight ratio of the fluoroglycofen-ethyl to the clethodim is 10:50 to 50:10; the weight of the active ingredients is 7% to 50% of that of the total weight of the composition. The weed killer composition provided by the invention can be applied to prevention and removal of weeds in cassava field, has preferable preventing and treating effects on broad leaf weeds and grassy weeds in the cassava field, has high herbicidal activity, obvious synergy and wide weed control spectrum, makes up the limitation of narrow single-dose weed control spectrum, improves the labor production efficiency, reduces the using amount of medicament, and achieves safety effects on cassava and afterreap crops.
Description
Technical field
The present invention relates to a kind of for the Herbicidal combinations after cassava field seedling, be specifically related to a kind of fluoroglycofen-ethyl and the agent of clethodim composite micro-emulsion, belong to technical field of pesticide.
Background technology
Cassava (Manihot esculenta crantz) originates from tropical America, is one of large tuber crops in the world three, has the reputation title of " underground granary ", " king of starch " and " special crop ".Chinese Cassava was planted over 40 years, and area constantly expands, and was developed into 45.1 ten thousand hectares in 2004 by 9.4 ten thousand hectares in 1961.In cassava plantation main producing region, Guangxi area is maximum to be reached 25.06 ten thousand hectares (statistics in 2004), is secondly 10.78 ten thousand hectares, Guangdong.Along with the expansion of cassava cultivated area, biology and the abiotic component of the growth of restriction cassava and output more and more come into one's own.Cassava Cultivate administration is extensive, and weeds are of a great variety, and crop smothering is one of primary biological factor affecting cassava good quality and high output always.According to investigations, weeds can cause cassava underproduction 30%-60%.Dislike weeds in cassava field of a great variety, win honour for cassava, strive water, strive fertilizer, the growth of weeds spreads and has a strong impact on the growth of cassava normal growth, and constitutes a serious threat to cassava stable high yield and commodity.According to during we seminar 2008-2011 to Guangdong, Guangxi and Hainan San Sheng cassava ground weedy rices, find that cassava field weeds 39 section 138 belongs to 184 kinds altogether, comprise grassy weed, broad leaved weeds and sedge weed, wherein malignant weed more than 10 is planted, as cilium lady's-grass, short clever lady's-grass, eleusine indica, the rhizome of nutgrass flatsedge, Spermacoce latifolia, false stinkweed, bidens pilosa etc.
Directed spraying chemical weed control after soil closes weeding and seedling before the weed control mode of current domestic cassava field mainly comprises cassava seedling: before seedling soil close weeding refer to emerge after cassava plantation before take to spray processing soil treatment agent, soil due to cassava of planting is all the soil of arid, so sealing effect is unsatisfactory, and preventive effect is short.To Feng Hangqian after cassava emerges, peasant household mainly takes directed spraying chemical weed control, and the method as orientation sprinkling paraquat, careless sweet unicorn is remedied, but this means to save the situation danger is very large, and operating difficulties, waste of manpower, material resources, financial resources.China has carried out about the research of cassava field weed killer herbicide and has worked in recent years: late naval etc. invent a kind of with haloxyfop-r-methyl be active ingredient cassava field post-seedling chemical herbicide and a kind of take efficient fluazifop as the cassava field post-seedling chemical herbicide of active ingredient, but these two kinds of weed killer herbicides all can only prevent and kill off grassy weed, and to broad leaved weeds without preventive effect, therefore there is certain limitation.Evident nine grades of king have invented sulfometuronmethyl to the selectivity of cassava and sisal hemp and using method thereof, but sulfometuronmethyl mainly uses at uncultivated area, general not being recommended on crops uses, because sulfometuronmethyl is responsive to most of crops, particularly greengrocery, often has report to use sulfometuronmethyl can cause the problems such as poisoning to surrounding body, melon field of vegetables; And sulfometuronmethyl residual life is long, after dispenser, poisoning can be produced to rear stubble crops.
Summary of the invention
For above problem, inventor has carried out a large amount of herbicide screenings and field medicine effect test work in a deep going way, find that composite micro-emulsion agent control of weeds after cassava field seedling of fluoroglycofen-ethyl and clethodim mixture has significant effect, have concurrently and prevent and kill off broad leaved weeds and grassy weed, broad weed-killing spectrum.
Given this, the object of the present invention is to provide a kind of herbicidal composition for cassava field, said composition is the microemulsion by fluoroglycofen-ethyl and clethodim mixture, and it can prevent and treat broad leaved weed, can prevent and treat grassy weed again, and synergy is remarkable, broad weed-killing spectrum.
Its technical scheme is: a kind of herbicidal composition for cassava field, is made up of herbicide active active ingredients, solvent, emulsifier, stabilizing agent and water; Wherein, described herbicidal activity component is made up of fluoroglycofen-ethyl and clethodim, fluoroglycofen-ethyl and clethodim weight ratio are 10:50-50:10, be preferably 3-5:5-7, be more preferably 3:5,5:7 or 4:5, the weight of active component is the 7%-50% of composition total weight, is preferably 8-18%, is more preferably 8%, 12% or 18%.
For a Herbicidal combinations for cassava field, the formulation of described herbicidal composition is microemulsion.It is made up of the component of following mass percent:
Described fluoroglycofen-ethyl is the former medicine of fluoroglycofen-ethyl; Described clethodim is clethodim technical pesticide.
Described solvent is methyl-sulfoxide, one or more in 1-METHYLPYRROLIDONE, dimethyl formamide (DMF), acetone, chloroform, cyclohexanone, toluene, dimethylbenzene, ethylene glycol mix arbitrarily.
Described emulsifier is castor oil polyoxyethylene ether, one or more in styrylphenol polyoxyethylene ether (agriculture breast 600#), benzyl dimethyl phenol APEO (agriculture breast 400#), calcium dodecyl benzene sulfonate (agriculture breast 500#), alkylphenol polyoxyethylene (OP-10), styrylphenol polyoxyethanyl polyoxyethyl propyl ether (agriculture breast 1600#) mix arbitrarily.
Described stabilizing agent is chloro-1, the 2-expoxy propane of 3-, butyl glycidyl ether, phenyl glycidyl ether, and one or more in cresyl glycidyl ether and polyethylene glycol diglycidyl ether mix arbitrarily.
Described water is the one in running water, distilled water or deionized water.
As optimization, the weight percentage of described fluoroglycofen-ethyl is preferably 3-15%.
As optimization, the weight percentage of described clethodim is preferably 8-20%.
As optimization, described solvent be preferably dimethylbenzene, toluene, 1-METHYLPYRROLIDONE, cyclohexanone, methyl-sulfoxide one or more mix arbitrarily.
As optimization, described emulsifier is preferably calcium dodecyl benzene sulfonate (agriculture breast 500#) and styrylphenol polyoxyethylene ether (agriculture breast 600#), benzyl dimethyl phenol APEO (agriculture breast 400#), alkylphenol polyoxyethylene (OP-10), one or both mixture solvent of styrylphenol polyoxyethanyl polyoxyethyl propyl ether (agriculture breast 1600#).
As optimization, described stabilizing agent is preferably chloro-1, the 2-expoxy propane of 3-and/or butyl glycidyl ether.
As optimization, described water is preferably deionized water.
Described Herbicidal combinations is preferably made up of the component of following percent mass percentage composition:
Fluoroglycofen-ethyl 3-8%, clethodim 5-7%, solvent 18-22%, emulsifier 15-16%, stabilizing agent 2-3%, water 41-55%.
Described Herbicidal combinations is more preferably:
1) be made up of the component of following mass parts percentage composition:
Wherein, solvent is the mixture of dimethylbenzene, 1-METHYLPYRROLIDONE and cyclohexanone, and the mass ratio of dimethylbenzene, 1-METHYLPYRROLIDONE and cyclohexanone is 2:2:1; Emulsifier is the mixture of calcium dodecyl benzene sulfonate (agriculture breast 500#), styrylphenol polyoxyethylene ether (agriculture breast 600#) and alkylphenol polyoxyethylene (OP-10), and calcium dodecyl benzene sulfonate (agriculture breast 500#), styrylphenol polyoxyethylene ether (agriculture breast 600#) and the mass ratio of alkylphenol polyoxyethylene (OP-10) are 4:6:2; Stabilizing agent is butyl glycidyl ether;
Or,
2) be made up of the component of following mass parts percentage composition:
Wherein, solvent is the mixture of dimethylbenzene, methyl-sulfoxide and cyclohexanone, and the mass ratio of dimethylbenzene, methyl-sulfoxide and cyclohexanone is 3:1:5; Emulsifier is the mixture of calcium dodecyl benzene sulfonate (agriculture breast 500#), styrylphenol polyoxyethylene ether (agriculture breast 600#) and alkylphenol polyoxyethylene (OP-10), and calcium dodecyl benzene sulfonate (agriculture breast 500#), styrylphenol polyoxyethylene ether (agriculture breast 600#) and the mass ratio of alkylphenol polyoxyethylene (OP-10) are 4:2:2; Stabilizing agent is butyl glycidyl ether;
Or,
3) be made up of the component of following mass parts percentage composition:
Wherein, solvent is the mixture of dimethylbenzene, 1-METHYLPYRROLIDONE and cyclohexanone, and the mass ratio of dimethylbenzene, 1-METHYLPYRROLIDONE and cyclohexanone is 3:4:4; Emulsifier is the mixture of calcium dodecyl benzene sulfonate, styrylphenol polyoxyethylene ether and alkylphenol polyoxyethylene, and the mass ratio of calcium dodecyl benzene sulfonate, styrylphenol polyoxyethylene ether and alkylphenol polyoxyethylene is 4:2:2; Stabilizing agent is butyl glycidyl ether.
The preparation method of a kind of Herbicidal combinations for cassava field provided by the present invention, be fluoroglycofen-ethyl is dissolved completely under mechanical stirring in solvent after, add emulsifier for mixing even, at room temperature high-speed stirred is even to add clethodim, stabilizing agent and water more successively, obtained homogeneous, transparent, stable fluoroglycofen-ethyl clethodim microemulsion.
Said herbicidal composition also belongs to protection scope of the present invention preventing and treating the application in cassava field weeds.
In described application, the cassava planted in described cassava field is in seedling stage, and particularly cassava does not seal the period of row (generally in February to April) after emerging.
In described application, described weeds are broad leaved weeds and/or grassy weed; Described broad leaved weeds be selected from false stinkweed, Spermacoce latifolia, the rich flowers and plants of rough leaf, Ageratum conyzoides and match certain herbaceous plants with big flowers one or more; One or more in Egyptian grass, eleusine indica, cilium lady's-grass, short clever lady's-grass and Bermuda grass.
The present invention has the following advantages:
1. significantly improve activity of weeding: the present invention is reasonably combined by two kinds of weed killer herbicides, all have better control efficiency, greatly improve the removing activity of weed killer herbicide to the broad leaved weed of cassava field and grassy weed, synergy is remarkable, expands herbicide spectrum.
2. improve labor productivity, reduce drug cost: broad leaved weed and grassy weed are prevented and kill off in a Herbicidal combinations of the present invention dispenser, significantly improve production efficiency simultaneously; What Herbicidal combinations dispenser cost of the present invention was less than two kinds of single doses simultaneously is want cost.
3. safety is high: two kinds of active ingredients in Herbicidal combinations of the present invention all have very high safety to cassava and succession crop; And the Herbicidal combinations using dosage minimizing that two kinds of composite reagents obtain, while improve preventive effect, the safety of cassava and succession crop is also improved.
4, Herbicidal combinations of the present invention is by binary built, delays Weed Resistance, decreases Pesticide use amount and access times, reduces weeds to the resistance of medicament, and improves the preventive effect of antagonism weeds, thus extend the service life of medicament.
Up to the present, domestic and international patent does not also mention the composition of fluoroglycofen-ethyl and clethodim two kinds of weed killer herbicides and they are in the application of cassava field.
Embodiment
Below by instantiation, the invention will be further described.Various auxiliary agents selected by the present invention, carrier are commercially available prod, are that pesticide producing commonly uses assistant agent, are conventional method if do not added specified otherwise.
The preparation of embodiment 1:8% fluoroglycofen-ethyl clethodim microemulsion
Each composition weight proportioning of 8% fluoroglycofen-ethyl clethodim microemulsion:
Wherein, solvent is the mixture of dimethylbenzene, 1-METHYLPYRROLIDONE and cyclohexanone, and the mass ratio of dimethylbenzene, 1-METHYLPYRROLIDONE and cyclohexanone is 2:2:1; Emulsifier is the mixture of calcium dodecyl benzene sulfonate (agriculture breast 500#), styrylphenol polyoxyethylene ether (agriculture breast 600#) and alkylphenol polyoxyethylene (OP-10), and calcium dodecyl benzene sulfonate (agriculture breast 500#), styrylphenol polyoxyethylene ether (agriculture breast 600#) and the mass ratio of alkylphenol polyoxyethylene (OP-10) are 4:6:2; Stabilizing agent is butyl glycidyl ether.
Preparation method the following is:
Former for 3kg fluoroglycofen-ethyl medicine (production of agricultural chemicals three factory of former Kiamusze City) is dissolved completely in 8kg dimethylbenzene under mechanical stirring, in 8kg 1-METHYLPYRROLIDONE and 4kg cyclohexanone mixed solvent, add 5kg calcium dodecyl benzene sulfonate (agriculture breast 500#, Xingtai City blue sky Fine Chemical Co., Ltd), 7.5kg styrylphenol polyoxyethylene ether (agriculture breast 600#, Xingtai City blue sky Fine Chemical Co., Ltd) and 2.5kg alkylphenol polyoxyethylene (OP-10, Zichuan foundation oil chemistry factory) mixture stir, add 5Kg clethodim technical pesticide (Binzhou De Dong Chemical Manufacture) more successively, after 2Kg butyl glycidyl ether stirs, namely obtain homogeneous after adding deionized water 55Kg uniform stirring 1h, transparent, 8% stable fluoroglycofen-ethyl clethodim microemulsion.
The preparation of embodiment 2:12% fluoroglycofen-ethyl clethodim microemulsion
Each composition weight proportioning of 12% fluoroglycofen-ethyl clethodim microemulsion:
Wherein, solvent is the mixture of dimethylbenzene, methyl-sulfoxide and cyclohexanone, and the mass ratio of dimethylbenzene, methyl-sulfoxide and cyclohexanone is 3:1:5; Emulsifier is the mixture of calcium dodecyl benzene sulfonate (agriculture breast 500#), styrylphenol polyoxyethylene ether (agriculture breast 600#) and alkylphenol polyoxyethylene (OP-10), and calcium dodecyl benzene sulfonate (agriculture breast 500#), styrylphenol polyoxyethylene ether (agriculture breast 600#) and the mass ratio of alkylphenol polyoxyethylene (OP-10) are 4:2:2; Stabilizing agent is butyl glycidyl ether.
Preparation method the following is:
Former for 5kg fluoroglycofen-ethyl medicine (production of agricultural chemicals three factory of former Kiamusze City) is dissolved completely in 6kg dimethylbenzene under mechanical stirring, in 2kg methyl-sulfoxide and 10kg cyclohexanone mixed solvent, add 8kg calcium dodecyl benzene sulfonate (agriculture breast 500#, Xingtai City blue sky Fine Chemical Co., Ltd), 4kg styrylphenol polyoxyethylene ether (agriculture breast 600#, Xingtai City blue sky Fine Chemical Co., Ltd) and 4kg alkylphenol polyoxyethylene (OP-10, Zichuan foundation oil chemistry factory) mixture stir, add 7Kg clethodim technical pesticide (Binzhou De Dong Chemical Manufacture) more successively, after 2.5Kg butyl glycidyl ether stirs, namely obtain homogeneous after adding deionized water 51.5Kg uniform stirring 1h, transparent, 12% stable fluoroglycofen-ethyl clethodim microemulsion.
The preparation of embodiment 3:18% fluoroglycofen-ethyl clethodim microemulsion
Each composition weight proportioning of 18% fluoroglycofen-ethyl clethodim microemulsion:
Wherein, solvent is the mixture of dimethylbenzene, 1-METHYLPYRROLIDONE and cyclohexanone, and the mass ratio of dimethylbenzene, 1-METHYLPYRROLIDONE and cyclohexanone is 3:4:4; Emulsifier is the mixture of calcium dodecyl benzene sulfonate (agriculture breast 500#), styrylphenol polyoxyethylene ether (agriculture breast 600#) and alkylphenol polyoxyethylene (OP-10), and calcium dodecyl benzene sulfonate (agriculture breast 500#), styrylphenol polyoxyethylene ether (agriculture breast 600#) and the mass ratio of alkylphenol polyoxyethylene (OP-10) are 4:2:2; Stabilizing agent is butyl glycidyl ether.
Preparation method the following is:
Former for 8kg fluoroglycofen-ethyl medicine (production of agricultural chemicals three factory of former Kiamusze City) is dissolved completely in 6kg dimethylbenzene under mechanical stirring, in 8kg 1-METHYLPYRROLIDONE and 8kg cyclohexanone mixed solvent, add 8kg calcium dodecyl benzene sulfonate (agriculture breast 500#, Xingtai City blue sky Fine Chemical Co., Ltd), 4kg styrylphenol polyoxyethylene ether (agriculture breast 600#, Xingtai City blue sky Fine Chemical Co., Ltd) and 4kg alkylphenol polyoxyethylene (OP-10, Zichuan foundation oil chemistry factory) mixture stir, add 10Kg clethodim technical pesticide (Binzhou De Dong Chemical Manufacture) more successively, after 3Kg butyl glycidyl ether stirs, namely obtain homogeneous after adding deionized water 41Kg uniform stirring 1h, transparent, 18% stable fluoroglycofen-ethyl clethodim microemulsion.
Embodiment 4: the detection of fluoroglycofen-ethyl clethodim microemulsion physicochemical property and stability
8% fluoroglycofen-ethyl clethodim microemulsion, 12% fluoroglycofen-ethyl clethodim microemulsion of embodiment 2 preparation and the 18% fluoroglycofen-ethyl clethodim microemulsion of embodiment 3 preparation prepared embodiment 1 with reference to HG/T2467.10-2003 " microemulsion product standard writes specification " detect as follows:
1. the fluoroglycofen-ethyl clethodim microemulsion that prepared by composition and outward appearance: embodiment 1-3 is transparent or semitransparent homogeneous liquid, without visible suspension and precipitation.
2. stability of emulsion: test by GB/T1603.18% fluoroglycofen-ethyl clethodim microemulsion prepared by 8% fluoroglycofen-ethyl clethodim microemulsion prepared by the embodiment 1 of getting 1ml respectively, 12% fluoroglycofen-ethyl clethodim microemulsion of embodiment 2 preparation and embodiment 3, respectively add the 342mg/L standard hard water of 200ml, shake up, at 30 DEG C, leave standstill 30min.Observation shows 3 all transparent states of sample, upper without oil slick, lower to precipitation, and can mix with any ratio with water.
3. low-temperature stability: by 4.11 testing in HG/T2467.2-2003.8% fluoroglycofen-ethyl clethodim microemulsion, 12% fluoroglycofen-ethyl clethodim microemulsion of embodiment 2 preparation and 18% fluoroglycofen-ethyl clethodim microemulsion of embodiment 3 preparation that respectively prepared by Example 1 are about 50mL, be sealed in clear, colorless glass port grinding bottle, be placed in 0 ~-20 DEG C of refrigerator and cooled to hide, different temperature is set respectively, takes out after 14 days.Observation show 3 groups of samples all without freezing, muddy, layering or precipitation.
4. heat storage stability: 8% fluoroglycofen-ethyl clethodim microemulsion, 12% fluoroglycofen-ethyl clethodim microemulsion of embodiment 2 preparation and each 10ml of 18% fluoroglycofen-ethyl clethodim microemulsion of embodiment 3 preparation that respectively prepared by Example 1 load in ampoule bottle, 14d is stored in the insulating box of 54 DEG C ± 2 DEG C, observation shows that 3 groups of sample appearance keep homogeneous phase transparent, without lamination.Analyze active constituent content, its resolution ratio is generally all less than 5%-10%.
Embodiment 5: fluoroglycofen-ethyl clethodim microemulsion is tested cassava field Weed-control effect:
Test site is in Village, treasured island, Danzhou City, Hainan Province, and cassava test kind is No. 8, south China.In April, 2013, cassava height of seedling 10-15cm, vegetative period is Seedling Stage, in cassava field, grassy weed main species has Egyptian grass (Dactyloctenium aegyptium (L.) Beauv.), eleusine indica (Eleusine indica (L.) Gaertn.), cilium lady's-grass (Digitaria ciliaris (Retz.) Koeler.), short clever lady's-grass (Digitaria setigera Roth ex Roem.etSchult.), Bermuda grass (Cynodon dactylon (L.) Pers.) etc., and vegetative period is the 3-5 leaf phase; Broad leaved weeds main species has false stinkweed (Eupatorium catarium Veldkamp), Spermacoce latifolia (Borreria latifolia (Aubl.) K.Schum.), the rich flowers and plants of rough leaf (Borreria articularis (L.f.) G.Mey.), Ageratum conyzoides (Ageratumconyzoides L.), match certain herbaceous plants with big flowers (Malvastrum coromandelianum (L.) Guercke) etc., and vegetative period is the 3-5 leaf phase.12% fluoroglycofen-ethyl clethodim microemulsion prepared by the 8% fluoroglycofen-ethyl clethodim microemulsion prepared with embodiment 1, embodiment 2 or 18% fluoroglycofen-ethyl clethodim microemulsion prepared by embodiment 3 are for treatment agent; 20% paraquat (purchased from Anhui Fengle Agricultural Co., Ltd), 15% fluoroglycofen-ethyl EC(are purchased from Beijing middle peasant Ke Mei Chemical Co., Ltd.), 10.8% clethodim EC(is purchased from Harbin agricultural science and technology development corporation, Ltd. of Dong Nong alliance) be contrast medicament, and clear water contrast is set.By table 1 drug dose preparating liquid, spray with knapsack sprayer cauline leaf.Wherein embodiment 1 prepare 8% fluoroglycofen-ethyl clethodim microemulsion, embodiment 2 prepare 12% fluoroglycofen-ethyl clethodim microemulsion or embodiment 3 prepare 18% fluoroglycofen-ethyl clethodim microemulsion treatment agent and 15% fluoroglycofen-ethyl EC and 10.8% clethodim EC, and clear water control treatment, take cauline leaf spraying in the ranks (allowing medicine liquid spray on cassava blade); Directed spraying in the ranks (use the spraying of directed spraying device, and cover cassava seedling with Plastic Drum, guarantee that liquid is not sprayed onto on Manihot Esculenta) taked by contrast medicament.Experimental plot area is 20m
2, 5 repetitions are established in each process altogether.Each process dispenser adds up weeds strain number in 30 days afterwards, calculates the strain preventive effect of weeds.Measure cassava plant height and the per mu yield of statistics cassava in the end of the year simultaneously.
Strain preventive effect=(clear water check plot weeds strain number-chemicals treatment district weeds strain number)/clear water check plot weeds strain number * 100%
Rate of growth=(clear water check plot cassava production-chemicals treatment district cassava production)/check plot cassava production * 100%
The control efficiency of table 1 fluoroglycofen-ethyl clethodim microemulsion cassava garden weeds and rate of growth analysis
Found by visual observations, 18% fluoroglycofen-ethyl clethodim microemulsion dispenser cassava leaves sheet in early stage prepared by 8% fluoroglycofen-ethyl clethodim microemulsion prepared by embodiment 1,12% fluoroglycofen-ethyl clethodim microemulsion of embodiment 2 preparation or embodiment 3 there will be slight spot of burning, spot diameter is less than 1mm, about 8-14 days blade calcination transference cures; And three kinds for the treatment of agents do not have inhibitory action, cassava blade without deformity to newborn the growing of blade of cassava.During 15% fluoroglycofen-ethyl EC dispenser, cassava blade also there will be slight calcination spot, and symptom is similar to example 1-3, and during 10.8% clethodim EC dispenser cassava blade without symptom of chemical damage.The slight calcination spot that during showing herbicidal composition dispenser of the present invention, cassava blade occurs is caused by the fluoroglycofen-ethyl composition in composition.It is as shown in table 1 that dispenser adds up pharmacodynamic results in 30 days afterwards: the community Weed-control effect of 18% fluoroglycofen-ethyl clethodim microemulsion process prepared by 8% fluoroglycofen-ethyl clethodim microemulsion prepared by embodiment 1,12% fluoroglycofen-ethyl clethodim microemulsion of embodiment 2 preparation and embodiment 3 all reaches more than 88.9%, control efficiency, higher than being used alone wherein a kind of active ingredient, has obvious synergistic effect; A simultaneously dispenser takes into account prevents and kill off grassy weed and broad leaved weeds, and is used alone wherein compared with a kind of active ingredient, expands herbicide spectrum, improves labor productivity, reduce medicament usage amount.And control efficiency is also all high by more than 10% than contrast medicament 20% paraquat aqua.From production-increasing function, after the fluoroglycofen-ethyl clethodim microemulsion using embodiment 1-3 to prepare, the rate of growth of cassava reaches more than 36%, and the rate of growth contrasting medicament 20% paraquat aqua is only 28%.Also find that 18% fluoroglycofen-ethyl clethodim microemulsion preventive effect is best by table 1, reach 93.6%.Therefore recommendation 18% fluoroglycofen-ethyl clethodim microemulsion in actual applications.
Table 2 fluoroglycofen-ethyl clethodim microemulsion is to the control efficiency of several main weeds in cassava garden
As shown in Table 2, fluoroglycofen-ethyl clethodim microemulsion all has good control efficiency to several main weeds in cassava garden.8%, 12% and 18% fluoroglycofen-ethyl clethodim microemulsion prepared by the embodiment 1-3 control efficiency to the eleusine indica in cassava garden, lady's-grass, false stinkweed and Spermacoce latifolia all reaches more than 86%.Well inhibit the generation of this several malignant weed and spread.Further, effect is also than being used alone 15% fluoroglycofen-ethyl EC and 10.8% clethodim EC is good, and both explanations are composite has good synergistic effect.
As can be seen here, the fluoroglycofen-ethyl clethodim microemulsion prepared in embodiment 1-3 all shows good preventive effect to cassava field weeds, better control efficiency is all had to broad leaved weed and grassy weed, activity of weeding is high, herbicide spectrum is wider, low-residual, has delayed herbicide resistance, to cassava and succession crop safety high.It is herbicidal composition satisfactory for result to cassava field control of weeds at present.
Claims (13)
1., for a herbicidal composition for cassava field, be made up of herbicide active active ingredients, solvent, emulsifier, stabilizing agent and water; It is characterized in that: described herbicidal activity component is made up of fluoroglycofen-ethyl and clethodim, fluoroglycofen-ethyl and clethodim weight ratio are 10:50-50:10, and the weight of active component is the 7%-50% of composition total weight.
2. a kind of herbicidal composition for cassava field according to claims 1, is characterized in that: the formulation of described herbicidal composition is microemulsion.
3. a kind of herbicidal composition for cassava field according to claims 1, is characterized in that: it is made up of the component of following mass percent:
Fluoroglycofen-ethyl 3-20%, clethodim 5-30%, solvent 10-25%, emulsifier 5-15%, stabilizing agent 0.5-4%, water 20-70%.
4. according to a kind of herbicidal composition for cassava field described in any one in claim 1-3, it is characterized in that: described solvent is methyl-sulfoxide, one or more in 1-METHYLPYRROLIDONE, dimethyl formamide, acetone, chloroform, cyclohexanone, toluene, dimethylbenzene, ethylene glycol mix arbitrarily; Described emulsifier is castor oil polyoxyethylene ether, one or more in styrylphenol polyoxyethylene ether, benzyl dimethyl phenol APEO, calcium dodecyl benzene sulfonate, alkylphenol polyoxyethylene, styrylphenol polyoxyethanyl polyoxyethyl propyl ether mix arbitrarily; Described stabilizing agent is chloro-1, the 2-expoxy propane of 3-, butyl glycidyl ether, phenyl glycidyl ether, and one or more in cresyl glycidyl ether and polyethylene glycol diglycidyl ether mix arbitrarily.
5., according to a kind of herbicidal composition for cassava field described in any one in claim 1-3, it is characterized in that: described water is the one in running water, distilled water or deionized water.
6., according to a kind of herbicidal composition for cassava field described in any one in claim 1-3, it is characterized in that: it is made up of the component of following mass percent:
Fluoroglycofen-ethyl 3-8%, clethodim 5-7%, solvent 18-22%, emulsifier 15-16%, stabilizing agent 2-3%, water 41-55%.
7., according to a kind of herbicidal composition for cassava field described in any one in claim 1-3, it is characterized in that: be made up of the component of following mass parts percentage composition:
Wherein, solvent is the mixture of dimethylbenzene, 1-METHYLPYRROLIDONE and cyclohexanone, and the mass ratio of dimethylbenzene, 1-METHYLPYRROLIDONE and cyclohexanone is 2:2:1; Emulsifier is the mixture of calcium dodecyl benzene sulfonate, styrylphenol polyoxyethylene ether and alkylphenol polyoxyethylene, and the mass ratio of calcium dodecyl benzene sulfonate, styrylphenol polyoxyethylene ether and alkylphenol polyoxyethylene is 4:6:2; Stabilizing agent is butyl glycidyl ether.
8., according to a kind of herbicidal composition for cassava field described in any one in claim 1-3, it is characterized in that: be made up of the component of following mass parts percentage composition:
Wherein, solvent is the mixture of dimethylbenzene, methyl-sulfoxide and cyclohexanone, and the mass ratio of dimethylbenzene, methyl-sulfoxide and cyclohexanone is 3:1:5; Emulsifier is the mixture of calcium dodecyl benzene sulfonate, styrylphenol polyoxyethylene ether and alkylphenol polyoxyethylene, and the mass ratio of calcium dodecyl benzene sulfonate, styrylphenol polyoxyethylene ether and alkylphenol polyoxyethylene is 4:2:2; Stabilizing agent is butyl glycidyl ether.
9., according to a kind of herbicidal composition for cassava field described in any one in claim 1-3, it is characterized in that: be made up of the component of following mass parts percentage composition:
Wherein, solvent is the mixture of dimethylbenzene, 1-METHYLPYRROLIDONE and cyclohexanone, and the mass ratio of dimethylbenzene, 1-METHYLPYRROLIDONE and cyclohexanone is 3:4:4; Emulsifier is the mixture of calcium dodecyl benzene sulfonate, styrylphenol polyoxyethylene ether and alkylphenol polyoxyethylene, and the mass ratio of calcium dodecyl benzene sulfonate, styrylphenol polyoxyethylene ether and alkylphenol polyoxyethylene is 4:2:2; Stabilizing agent is butyl glycidyl ether.
10. the herbicidal composition in claims 1-9 described in any one is preventing and treating the application in cassava field weeds.
11. application according to claim 10, is characterized in that: the cassava planted in described cassava field is in seedling stage.
12., according to the application described in claim 11, is characterized in that: the cassava planted in described cassava field does not seal capable period after being in and emerging.
13., according to the application in claim 10-12 described in any one, is characterized in that: described weeds are broad leaved weeds and/or grassy weed; Described broad leaved weeds be selected from false stinkweed, Spermacoce latifolia, the rich flowers and plants of rough leaf, Ageratum conyzoides and match certain herbaceous plants with big flowers one or more; Described grassy weed be selected from Egyptian grass, eleusine indica, cilium lady's-grass, short clever lady's-grass and Bermuda grass one or more.
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| CN201310330201.3A CN103392703B (en) | 2013-07-31 | 2013-07-31 | Weed killer composition used for cassava field |
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| BR112017023244A2 (en) * | 2015-04-27 | 2018-08-07 | Bayer Cropscience Ag | use of certain herbicide combinations in tuberous root plants. |
Citations (4)
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|---|---|---|---|---|
| CN101971804A (en) * | 2010-11-01 | 2011-02-16 | 张瑜 | Fomesafen and clethodim weedicide for soybean fields |
| CN101999354A (en) * | 2010-12-06 | 2011-04-06 | 潍坊先达化工有限公司 | Combined weeding suspending agent |
| CN102669095A (en) * | 2011-03-16 | 2012-09-19 | 秦施豪 | Fluroxypyr clethodim missible oil |
| CN102726376A (en) * | 2011-04-08 | 2012-10-17 | 中国中化股份有限公司 | Clethodim emulsifiable pulvis |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101971804A (en) * | 2010-11-01 | 2011-02-16 | 张瑜 | Fomesafen and clethodim weedicide for soybean fields |
| CN101999354A (en) * | 2010-12-06 | 2011-04-06 | 潍坊先达化工有限公司 | Combined weeding suspending agent |
| CN102669095A (en) * | 2011-03-16 | 2012-09-19 | 秦施豪 | Fluroxypyr clethodim missible oil |
| CN102726376A (en) * | 2011-04-08 | 2012-10-17 | 中国中化股份有限公司 | Clethodim emulsifiable pulvis |
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