CN104126595B - A kind of microbicide compositions containing pyraclostrobin - Google Patents
A kind of microbicide compositions containing pyraclostrobin Download PDFInfo
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Abstract
The invention discloses a kind of microbicide compositions containing pyraclostrobin, the fungicide active ingredient comprised is pyraclostrobin, thiophanate-methyl and mancozeb, wherein, the weight percent content of pyraclostrobin is 1 ~ 30% of described microbicide compositions, the weight percent content of thiophanate-methyl is 5 ~ 70% of described microbicide compositions, and the weight percent content of mancozeb is 8 ~ 70% of described microbicide compositions.This composition can be mixed with and agriculturally allow the suspending agent of use, dispersible oil-suspending agent, water dispersible granules, wetting powder.Instant component is rationally composite, and bactericidal effect is good, and its activity and bactericidal effect are not the simple superposition of each composition activity, compared with single or binary built preparation, except having significant bactericidal effect, and have significant synergistic effect, good to crop safety.The present invention has good preventive effect to sigatoka, banana freckle, oranges and tangerines diplostomiasis, citrus anthracnose, ring rot of apple.
Description
Technical field
The invention belongs to technical field of compounded pesticide, relate to a kind of bactericidal composition, be specifically related to a kind of bactericidal composition being active component with pyraclostrobin, thiophanate-methyl, mancozeb.The invention still further relates to this bactericidal composition preparation formulation and in application agriculturally.
Background technology
Pyraclostrobin, has another name called pyraclostrobin, English common name: Pyraclostrobin, chemical name: N-[2-[[1-(4-chlorphenyl) pyrazole-3-yl] oxygen methyl] phenyl]-N-methoxy carbamate methyl esters.Pyraclostrobin belongs to methoxy acrylic bactericide, mainly acts on the cytochrome b el compound in the mitochondrial respiratory chain of fungi, stops electron transmission thus Antifungi growth.Pyraclostrobin can prevent and kill off all types of fungal pathogens, and fungicidal spectrum is wide, is mainly used in preventing and treating grape powdery mildew, downy mildew; Wheat powdery mildew, rust; Leaf rust of barley; The black leaf cecospora spot of banana; The diseases such as tomato morning, late blight.Pyraclostrobin to various crop comprise wheat class, grape, fruit tree, vegetables multiple diseases effective.
Thiophanate-methyl, is thiophanate methyl again, English common name: thiophanate-methyl, chemical name: 1,2-pair-(3-carbethoxyl group-α-ghiourea group) benzene.Thiophanate-methyl belongs to benzimidazole germicide, is a kind of broad spectrum activity systemic fungicide, can prevents and treats various crop disease, have interior suction, preventive and therapeutic action.Thiophanate-methyl is converted into carbendazim in plant corpus, and in the mitosis of interference germ, the formation of spindle, affects cell division.Thiophanate-methyl can be used for preventing and treating the multiple diseases on the crops such as Cereal, vegetables, fruit tree.
Mancozeb, English common name: Mancozeb, chemical name: ethylene bisdithiocarbamic manganese and zinc complex salt.Mancozeb is the wider protective fungicide of fungicidal spectrum, mainly suppresses the oxidation of pyruvic acid in thalline, effective to multiple diseases such as the anthracnose on fruit tree, vegetables, early blight, simultaneously its normal and systemic fungicide mixture, for the generation of delaying drug resistance.
Although pyraclostrobin, thiophanate-methyl, mancozeb are all broad-spectrum germicides, but use in agricultural production for many years, be used alone that to prevent and treat crop pest effect unsatisfactory, germ produces resistance to it, generally mixture is all wanted to use, and any two active ingredient above-mentioned is mixed still can't resolve some crop pests as oranges and tangerines diplostomiasis, anthracnose, sigatoka, scab, ring rot of apple, brown spot prevent and treat problem.
Summary of the invention
The object of the present invention is to provide a kind of microbicide compositions containing pyraclostrobin, simultaneously containing pyraclostrobin, thiophanate-methyl, mancozeb three kinds of fungicide active ingredients.Inventor finds, pyraclostrobins different for the mechanism of action, thiophanate-methyl, mancozeb is composite by a certain percentage, and be mixed with certain formulation, antagonism disease oranges and tangerines diplostomiasis, anthracnose etc. can significantly improve control efficiency, compare with single dose and binary built, there is obvious synergistic effect, high to crop safety, production has wide practical use.
The preparation formulation of the microbicide compositions provided containing pyraclostrobin is provided.
Another object of the present invention is to provide the application of above-mentioned composition in control farm crop fungus disease.Described fungal disease comprises sigatoka, banana freckle, oranges and tangerines diplostomiasis, citrus anthracnose, ring rot of apple.
For achieving the above object, the invention provides a kind of microbicide compositions containing pyraclostrobin, comprise pyraclostrobin, thiophanate-methyl and mancozeb three kinds of fungicide active ingredients, wherein, the weight percent content of pyraclostrobin is 1 ~ 30% of described microbicide compositions, the weight percent content of thiophanate-methyl is 5 ~ 70% of described microbicide compositions, and the weight percent content of mancozeb is 8 ~ 70% of described microbicide compositions.
Further, contain in the microbicide compositions of pyraclostrobin described, the content sum of pyraclostrobin, thiophanate-methyl and mancozeb is 14 ~ 85% of described bactericidal composition gross weight.
Further, the formulation of the described microbicide compositions containing pyraclostrobin is suspending agent, dispersibles oil-suspending agent, water dispersible granules, wetting powder.
Further, the purposes of described microbicide compositions in control farm crop fungus disease.
Preferred as technical scheme, described microbicide compositions can prevent the farm crop fungus diseases such as sigatoka, banana freckle, oranges and tangerines diplostomiasis, citrus anthracnose, ring rot of apple.
Compared with prior art, the beneficial effect that the present invention produces is:
(1) pyraclostrobins different for the mechanism of action, thiophanate-methyl, mancozeb are re-dubbed bactericidal composition by the present invention by a certain percentage, compared with single dose and binary built, the activity of said composition and bactericidal effect are not the simple superposition of each composition activity, but have significant synergistic effect.In addition, the advantage of described bactericidal composition also shows that component is reasonable, and have treatment and protective effect concurrently, bactericidal effect is good, and drug cost is low, good to crop safety.
(2) in agricultural production application, present invention efficiently solves the problem of the fungal disease control difficulty in the various crop such as citrus, apple, banana, grape, pears, particularly the farm crop fungus disease such as antagonism disease such as sigatoka, banana freckle, oranges and tangerines diplostomiasis, citrus anthracnose, ring rot of apple has good control efficiency, show obvious synergistic effect, high to crop safety, production has wide practical use.
(3) in formulation provided by the present invention, dispersible oil-suspending agent be a kind of novel and have preparation difficulty formulation.The invention solves and pyraclostrobin, thiophanate-methyl, mancozeb are mixed with the difficult problem dispersibling oil-suspending agent, this formulation has environmental protection, improves drug effect, resistance of rainwater washing against, the feature that the lasting period is long.
Embodiment
In order to make object of the present invention, technical scheme and beneficial effect clearly understand, below in conjunction with embodiment, the present invention is elaborated further.
(1) part prepared by preparation
First the compound method of the microbicide compositions containing pyraclostrobin is described.This bactericidal composition can be mixed with suspending agent, dispersibles oil-suspending agent, the multiple formulation such as water dispersible granules, wetting powder.To one skilled in the art, the microbicide compositions of preparation containing pyraclostrobin, except containing except active ingredient pyraclostrobin, thiophanate-methyl, mancozeb, also needs to select multiple auxiliary agent.When preparing above-mentioned formulation, can choice for use is different as required pesticidal preparations auxiliary element (auxiliary agent).Described auxiliary element can be one or more in dispersion medium, dispersant, emulsifier, wetting agent, thickener, defoamer, antifreezing agent, disintegrant, binding agent, filler etc.
To suspending agent, spendable auxiliary agent has: dispersant is as one or more in polycarboxylate, lignosulfonates, alkylnaphthalene sulfonate (dispersing agent NNO), TERSPERSE2020 (Huntsman Corporation of the U.S. produces, alkyl naphthalene sulfonic acid salt); Emulsifier is as one or more in Nongru-700 # (common name: alkyl phenol formaldehyde resin polyoxyethylene ether), agriculture breast 2201, this dish-60# (common name: Span60), Tween-60 # (common name: polyoxyethylene sorbitan stearate), agriculture breast 1601# (common name: triphenoethyl benzene phenol polyoxyethylene polyoxypropylene block polymer), TERSPERSE4894 (Huntsman Corporation of U.S. product); Wetting agent as in alkylphenol-polyethenoxy base ether formaldehyde condensation products sulphate, alkylphenol-polyethenoxy base ether phosphate, phenethyl phenol polyethenoxy base ether phosphate, alkyl sulfate, alkylsulfonate, naphthalene sulfonate, TERSPERSE2500 (Huntsman Corporation of U.S. product) one or more; Thickener as in xanthans, polyvinyl alcohol, bentonite, aluminium-magnesium silicate one or more; Preservative is as one or more in formaldehyde, benzoic acid, Sodium Benzoate; Stabilizing agent is as one or more in epoxidized soybean oil, epoxychloropropane, triphenyl phosphate; Defoamer is as organic silicon defoamer; Antifreezing agent is if ethylene glycol, propane diols, glycerine, urea, inorganic salts are as one or more in sodium chloride; Water is deionized water.
To dispersibling oil-suspending agent, spendable auxiliary agent has: emulsifier emulsifier (BY-110 as serial in BY (castor oil polyoxyethylene ether), BY-125, BY-140), calcium dodecyl benzene sulfonate, fatty alcohol-polyoxyethylene ether, Nongru-700 # (common name: alkyl phenol formaldehyde resin polyoxyethylene ether), agriculture breast 2201, this dish-60# (common name: sorbitan monostearate), Tween-60 # (common name: sorbitan monostearate APEO), agriculture breast 1601# (common name: phenethyl phenol polyoxyethylene poly-oxygen propylene aether), one or more in TERSPERSE4894 (Huntsman Corporation of U.S. product), dispersant is as one or more in polycarboxylate, lignosulfonates, EO-PO block copolymer (polyoxyethylene polyoxypropylene block copolymer), phosphate and its esters, Sulfonates, alkylnaphthalene sulfonate (dispersing agent NNO), TERSPERSE2020 (Huntsman Corporation of the U.S. produces, alkyl naphthalene sulfonic acid salt), wetting agent is as one or more in alkylphenol-polyethenoxy base ether formaldehyde condensation products sulphate, alkylphenol polyoxyethylene phosphate, phenethyl phenol polyethenoxy base ether phosphate, alkyl sulfate, alkylsulfonate, naphthalene sulfonate, TERSPERSE2500 (Huntsman Corporation of U.S. product), thickener is as one or more in gas-phase silica, polyvinyl alcohol, organobentonite, attapulgite, aluminium-magnesium silicate, stabilizing agent is as one or more in organic acid, organic base, ester class, alcohols, antioxidant, epoxychloropropane, tall oil, dispersion medium is as soybean oil, rapeseed oil, cottonseed oil, corn oil, castor oil, palm oil, epoxidized soybean oil, methyl oleate and esterification oils, diesel oil, machine oil, mineral oil, and esters solvent is as one or more in repefral, dibutyl phthalate, ethyl acetate, methyl benzoate.
For water dispersible granules, those skilled in the art are familiar with the corresponding auxiliary agent of use and complete the present invention very much.Dispersant is as one or more in polycarboxylate (TERSPERSE2700, T36, GY-D06 etc.), lignosulfonates, alkylnaphthalene sulfonate; Wetting agent is as one or more in alkyl sulfate, alkylsulfonate, naphthalene sulfonate; Disintegrant is as one or more in ammonium sulfate, sodium sulphate, polyvinylpyrrolidone, starch and derivative thereof, bentonite; Binding agent is as one or more in starch, glucose, polyvinyl alcohol, polyethylene glycol, sodium carboxymethylcellulose, sucrose; Filler as diatomite, kaolin, white carbon, fine particle calcium carbonate, talcum powder, attapulgite, potter's clay one or more.
To wetting powder, spendable auxiliary agent has: dispersant is as polycarboxylic acid salt (TERSPERSE2700, T36, GY-D06 etc.), lignin sulfonate (Ufoxane3A, BorresperseNA, BorresperseCA-SA etc.), naphthalene and alkyl naphthalene formaldehyde condensate sulfonates class (NNO, MF, MorwetD-425, TamolNN, TERSPERSE2020 etc.), Nekal BX (nekal), EO-PO block polyether class (polyoxyethylene polyoxypropylene block copolymer), alkylphenol-polyethenoxy base ether phosphate, one or more in alkylphenol-polyethenoxy base ether formaldehyde condensation products sulphate (SOPA), wetting agent is as one or more in Sulfates (K-12), Sulfonates (ABS-Na, BX, Terwet1004 etc.), compound wetting agent (MorwetEFW), filler as diatomite, kaolin, fine particle calcium carbonate, talcum powder, white carbon, attapulgite, potter's clay, ammonium sulfate, urea, sucrose, glucose, corn starch, sodium sulphate, sodium polyphosphate etc. one or more.
Example of formulations 1
Take 100 grams of pyraclostrobins, 100 grams of thiophanate-methyls, 200 grams of mancozebs, 30 grams of TERSPERSE4894 (Huntsman Corporation of U.S. product), 20 grams of dispersing agent NNOs, 20 grams of this dish-60#, 20 grams of aluminium-magnesium silicates, 2 grams of xanthans, 50 grams of ethylene glycol, 5 grams of formaldehyde, 5 grams of silicone defoaming agents (trade name: s-29, Nanjing "four news" (new ideas applied chemistry product Company), 448 grams of deionized waters.Above-mentioned raw materials is through mixing, and high speed shear dispersion 30min is 40% pyraclostrobin thiophanate-methyl mancozeb suspending agent with active constituent content obtained after sand mill sand milling.
Example of formulations 2
Take 40 grams of pyraclostrobins, 160 grams of thiophanate-methyls, 200 grams of mancozebs, 20 grams of TERSPERSE2020 (Huntsman Corporation of U.S. product), 30 grams of Nongru-700 #, 20 grams of Tween-60 #, 10 grams of TERSPERSE2500 (Huntsman Corporation of U.S. product), 20 grams of bentonites, 3 grams of xanthans, 30 grams of propane diols, 5 grams of benzoic acid, 5 grams of silicone defoaming agents (trade name: s-29, Nanjing "four news" (new ideas applied chemistry product Company), 10 grams of epoxychloropropane, 447 grams of deionized waters.Above-mentioned raw materials is through mixing, and high speed shear dispersion 35min is 40% pyraclostrobin thiophanate-methyl mancozeb suspending agent with active constituent content obtained after sand mill sand milling.
Example of formulations 3
Take 50 grams of pyraclostrobins, 200 grams of thiophanate-methyls, 200 grams of mancozebs, 30 grams of alkylphenol polyoxyethylene phosphates, 50 grams of polyoxyethylene polyoxypropylene block copolymers, 40 grams of calcium dodecyl benzene sulfonates, 30 grams of Nongru-700 #, 20 grams of castor oil polyoxyethylene ether BY-125,10 grams of white carbons, 10 grams of organobentonites, 20 grams of BHT (2,6-BHT, antioxidant), 340 grams of corn oils.
First add 340 grams of corn oils, 30 grams of alkylphenol polyoxyethylene phosphates to reactor, 50 grams of polyoxyethylene polyoxypropylene block copolymers, 40 grams of calcium dodecyl benzene sulfonates, 30 grams of Nongru-700 #, 20 grams of castor oil polyoxyethylene ether BY-125,20 grams of BHT, mix, are uniformly dispersed; 10 grams of white carbons, 10 grams of organobentonites, 50 grams of pyraclostrobins, 200 grams of thiophanate-methyls and 200 grams of mancozebs are added under high speed shear state, sand milling is carried out under zirconium pearl abrasive media, be ground to particle diameter less than 5 μm with sand mill, can obtain active constituent content is that 45% pyraclostrobin thiophanate-methyl mancozeb dispersibles oil-suspending agent.
Example of formulations 4
Take 10 grams of pyraclostrobins, 50 grams of thiophanate-methyls, 80 grams of mancozebs, 30 grams of fatty alcohol-polyoxyethylene ether, 30 grams of dispersing agent NNOs, 60 grams of this dish-60#, 30 grams of agriculture breast 2201#, 30 grams of polyvinyl alcohol, 20 grams of BHT (2,6-BHT, antioxidant), 20 grams of epoxychloropropane, 640 grams of methyl oleates.
First add 640 grams of methyl oleates, 30 grams of fatty alcohol-polyoxyethylene ether, 30 grams of dispersing agent NNOs, 60 grams of this dish-60#, 30 grams of agriculture breast 2201#, 20 grams of BHT, 20 grams of epoxychloropropane to reactor, mix, be uniformly dispersed; 30 grams of polyvinyl alcohol, 10 grams of pyraclostrobins, 50 grams of thiophanate-methyls and 80 grams of mancozebs are added under high speed shear state, sand milling is carried out under zirconium pearl abrasive media, be ground to particle diameter less than 5 μm with sand mill, can obtain active constituent content is that 14% pyraclostrobin thiophanate-methyl mancozeb dispersibles oil-suspending agent.
Example of formulations 5
Take 70 grams of pyraclostrobins, 700 grams of thiophanate-methyls, 80 grams of mancozebs, 15 grams of TERSPERSE2700 (polycarboxylate, Huntsman Corporation of the U.S. produces), 10 grams of sodium lignin sulfonates, 10 grams of Nekal BXs (nekal), 10 grams of K-12 (lauryl sodium sulfate), 15 grams of PVA (molecular weight 2000), 20 grams of polyvinylpyrrolidones, 70 grams of kaolin.Namely the method for above-mentioned raw materials frequent regulation water intaking dispersible granule mixes, ultra micro air-flow crushing, mixing, granulation step, producing active constituent content is 85% pyraclostrobin thiophanate-methyl mancozeb water dispersible granule.
Example of formulations 6
Take 300 grams of pyraclostrobins, 50 grams of thiophanate-methyls, 80 grams of mancozebs, 20 grams of T36 (polycarboxylate), 20 grams of dispersing agent NNOs (alkylnaphthalene sulfonate formaldehyde condensation products), 30 grams of Nekal BXs (nekal), 40 grams of K-12 (lauryl sodium sulfate), 460 grams of attapulgites.Namely the method for above-mentioned raw materials frequent regulation water intaking dispersible granule mixes, ultra micro air-flow crushing, mixing, granulation step, producing active constituent content is 43% pyraclostrobin thiophanate-methyl mancozeb water dispersible granule.
Example of formulations 7
Take 10 grams of pyraclostrobins, 90 grams of thiophanate-methyls, 700 grams of mancozebs, 40 grams of TERSPERSE2700,30 grams of alkylnaphthalene sulfonate formaldehyde condensation products (TamolNN), 10 grams of lauryl sodium sulfate, 120 grams of attapulgites.Above-mentioned raw materials is through mixing, ultra micro air-flow crushing, hybrid technique step, and being prepared into active constituent content is 80% pyraclostrobin thiophanate-methyl mancozeb wettable powder.
Example of formulations 8
Take 50 grams of pyraclostrobins, 100 grams of thiophanate-methyls, 500 grams of mancozebs, 60 grams of calcium lignosulfonates, 40 grams of alkylnaphthalene sulfonate formaldehyde condensation products (MorwetD-425), 20 grams of lauryl sodium sulfate, 230 grams of white carbons.Above-mentioned raw materials is through mixing, ultra micro air-flow crushing, hybrid technique step, and being prepared into active constituent content is 65% pyraclostrobin thiophanate-methyl mancozeb wettable powder.
(2) Biometric portion
Assays Example 1
In order to prevent and treat Major Fungus Diseases agricultural production endangering banana, oranges and tangerines, apple, inventor has carried out mutual composite synergy with pyraclostrobin, thiophanate-methyl and mancozeb and has studied, and concrete grammar is:
Subjects is sigatoka (Cercosproamusae), banana freckle (Macrophomamusae), oranges and tangerines diplostomiasis (Diaporthecitri), citrus anthracnose (Colletotrichumgloeosporioides), ring rot of apple (Botryospuaeriaberengerianaf.sp.piricola).
Former medicine is mixed with the test medicine of needs, single dose and each Mixed Pharmacy is arranged 5 variable concentrations gradients (on the basis of preliminary experiment result, bacteriostasis rate sets by geometric progression in the scope of 5% ~ 90%).If clear water contrasts, repeat 3 times.Test adopts mycelial growth rate method, by cultured pathogen, be aseptically 5mm card punch with diameter, cut bacterium cake from colony edge, with transfer needle, bacterium cake is connected on the culture medium flat plate of different agents concentration, puts 28 DEG C, cultivate in saturated humidity incubator; When control group bacterium colony covers with, measure colony diameter, calculate each chemicals treatment and suppress the percentage of mycelial growth, by the linear regression analysis between the probit value of inhibiting rate and the logarithm value of series concentration, obtain the EC of each medicament
50value, Wadley method calculates the coefficient of synergism (SR) of mixture, and evaluate the synergy type of mixture, SR<0.5 is antagonism, and 0.5≤SR≤1.5 are summation action, and SR>1.5 is synergistic function.
Table 1 pyraclostrobin, thiophanate-methyl and mancozeb mixture are to the toxicity test of sigatoka
Table 2 pyraclostrobin, thiophanate-methyl and mancozeb mixture are to the toxicity test of banana freckle
Table 3 pyraclostrobin, thiophanate-methyl and mancozeb mixture are to the toxicity test of oranges and tangerines diplostomiasis
Table 4 pyraclostrobin, thiophanate-methyl and mancozeb mixture are to the toxicity test of citrus anthracnose
Table 5 pyraclostrobin, thiophanate-methyl and mancozeb mixture are to the toxicity test of ring rot of apple
Toxicity test result (table 1, table 2, table 3, table 4 and table 5) shows: a kind of microbicide compositions containing pyraclostrobin, active ingredient is by following percentage by weight mixture: pyraclostrobin 1 ~ 30%, thiophanate-methyl 5 ~ 70%, mancozeb 8 ~ 70%, there is good virulence to sigatoka, banana freckle, oranges and tangerines scab, citrus anthracnose, ring rot of apple, have significant synergistic effect.It should be noted that, what occur in table 1, table 2, table 3, table 4 and table 5 writes a Chinese character in simplified form, and pyrrole represents pyraclostrobin, first represents thiophanate-methyl, mancozeb is shown in representative.
Assays Example 2
Prevent and treat sigatoka field trial.
Carry out example of formulations 1 (40% pyraclostrobin thiophanate-methyl mancozeb suspending agent) in May, 2014 in Dengmai County, Hainan Province and prevent and treat sigatoka field trial, with pyraclostrobin, thiophanate-methyl, mancozeb two yuan of complex preparations and single dose for contrast medicament, demonstrate this several medicament to the control efficiency difference of sigatoka and the safety to banana.Test method is with reference to " GB/T17980.95-2004 pesticide field efficacy medicine test criterion (two) the bactericidal agent for preventing and treating sigatoka test of pesticide effectiveness ".Trial crops is banana, and controlling object is sigatoka (Cercosproamusae).Carry out at the heavier banana garden of morbidity over the years.Test medicine and extension rate refer to table 6.Separately establish blank, often process 4 times and repeat, every community 10 strain banana, Gong32Ge community, random district group arranges.Adopt conventional spray-on process, evenly spray complete stool.1st dispenser is at sigatoka their early stage, and second time medication afterwards in 14 days, is total to dispenser 2 times.
Investigation and statistical method:
14 days investigation blade incidences after 14 days and second time medicine after first time medicine.Random searching 3 strain of every community, every strain banana down investigates 8 ~ 13 leaves (not opening lobus cardiacus to disregard) from top, total number of sheets, the sick number of sheets at different levels of record investigation.
Stage division:
0 grade: without scab;
1 grade: lesion area accounts for less than 5% of whole leaf area;
3 grades: lesion area accounts for 6% ~ 15% of whole leaf area;
5 grades: lesion area accounts for 16% ~ 25% of whole leaf area
7 grades: lesion area accounts for 26% ~ 50% of whole leaf area;
9 grades: lesion area accounts for more than 50% of whole leaf area.
Refer to calculate preventive effect according to disease.After each medicine after visual observations dispenser on the situation that affects of Banana Growth, leaf look, flowers and fruits etc., examination medicament to the safety of banana plant.
Disease index=[∑ (the sick number of sheets × relative level numerical value at different levels)/(investigation total leaf number × 9)] × 100
Control efficiency (%)=[(contrast disease index-process disease index)/contrast disease index] × 100
Sigatoka field test results prevented and treated by table 6
Field test results shows: 40% pyraclostrobin thiophanate-methyl mancozeb suspending agent 1000 doubly has good control efficiency to sigatoka, after medicine, the preventive effect of 14 days is 85.47% for the first time, after second time medicine, the preventive effect of 14 days is 92.45%, be better than 50% pyraclostrobin thiophanate-methyl suspending agent 1000 times, 40% pyraclostrobin mancozeb suspending agent 800 times, 50% thiophanate-methyl mancozeb wettable powder 400 is doubly to the preventive effect of sigatoka, also 25% pyraclostrobin missible oil 1000 times is obviously better than, 70% thiophanate-methyl wetting powder 600 times, 70% mancozeb wettable powder 500 is doubly to the preventive effect (see table 6) of sigatoka.
Under this experimental condition, visual observations reagent agent is to the safety of banana, and result shows, and this several medicament all produces without poisoning Leaf of banana and flowers and fruits, performance safety.
Result of the test significantly improves the control efficiency to sigatoka after showing pyraclostrobin, thiophanate-methyl and mancozeb mixture, has significant synergistic effect, to Banana Growth safety, is the favourable agents preventing and treating sigatoka
Assays Example 3
Control citrus anthracnose field trial.
Within 2013, carry out example of formulations 3 (45% pyraclostrobin thiophanate-methyl mancozeb dispersibles oil-suspending agent) in City of Taizhou and prevent and treat citrus anthracnose field trial, with pyraclostrobin, thiophanate-methyl, mancozeb two yuan of complex preparations and single dose for contrast medicament, demonstrate this several medicament to the control efficiency difference of citrus anthracnose and the safety to oranges and tangerines.Trial crops is oranges and tangerines, and kind is that Huangyan is early local, the age of tree 12 years.Test medicine and extension rate refer to table 7.Separately establish blank, often process 4 times and repeat, every community 5 strain mandarin tree, Gong32Ge community, random district group arranges, and protection strain is established in interval.Adopt conventional spray-on process, evenly spray complete stool.In oranges and tangerines young fruit period and each dispenser of fruit expanding period 1 time, dispenser 2 times altogether.
Investigation and statistical method:
Within 14 days after second time dispenser, carry out disease index investigation, each community random searching 2 strain mandarin tree, East, West, South, North, middle sampling are pressed in every strain, often some investigation fruit 15, and record investigation total fruit number, sick fruit number at different levels, calculate disease index.
Grade scale is:
0 grade: anosis;
1 grade: the scab area that is connected accounts for whole fruit area less than 5%;
3 grades: the scab area that is connected accounts for whole fruit area 5% ~ 10%;
5 grades: the scab area that is connected accounts for whole fruit area 11% ~ 25%;
7 grades: the scab area that is connected accounts for whole fruit area 26% ~ 50%;
9 grades: the scab area that is connected accounts for whole fruit area more than 50%.
Disease index and control efficiency computational methods:
Disease index=[∑ (sick fruit number × relative level numerical value at different levels)/(investigation total fruit number × 9)] × 100
Control efficiency (%)=[(contrast disease index-process disease index)/contrast disease index] × 100
Security survey and the impact on other biological: some skies after the 1st day and medicine after each spray medicine, observe medicament and respectively process impact on oranges and tangerines.
Citrus anthracnose field test results prevented and treated by table 7
Field test results shows: 45% pyraclostrobin thiophanate-methyl mancozeb dispersibles oil-suspending agent 800 doubly has good control efficiency to citrus anthracnose, after second time medicine, the preventive effect of 14 days is 87.21%, be better than 50% pyraclostrobin thiophanate-methyl suspending agent 1000 times, 40% pyraclostrobin mancozeb suspending agent 800 times, 50% thiophanate-methyl mancozeb wettable powder 400 is doubly to the preventive effect of citrus anthracnose, also 25% pyraclostrobin missible oil 1000 times is obviously better than, 70% thiophanate-methyl wetting powder 600 times, 70% mancozeb wettable powder 500 is doubly to the preventive effect of citrus anthracnose, preventive effect difference reaches pole significance level (referring to table 7).
Duration of test is observed, and 45% pyraclostrobin thiophanate-methyl mancozeb dispersibles oil-suspending agent also has good control efficiency to oranges and tangerines diplostomiasis, is obviously better than other medicaments; Each chemicals treatment is not to the flower of oranges and tangerines, really, leaf produces poisoning phenomenon.
Result of the test significantly improves the control efficiency to citrus anthracnose after showing pyraclostrobin, thiophanate-methyl and mancozeb mixture, has significant synergistic effect, to Ci trus growth safety, is the favourable agents of control citrus anthracnose.
In sum, a kind of microbicide compositions containing pyraclostrobin of the present invention, employing three kinds of active component compound schemes, its activity and bactericidal effect are not the simple superposition of each composition activity, compared with existing unitary agent or any two active ingredient combinations, to the fungal disease in various crop as sigatoka, banana freckle, oranges and tangerines diplostomiasis, citrus anthracnose, ring rot of apple have good control efficiency, there is significant synergistic effect, good to crop safety, meet the security requirement of pesticidal preparations.
Further describe invention has been above, but the present invention is not limited to above-mentioned embodiment, in the ken that one skilled in the relevant art possesses, can also make a variety of changes under the prerequisite not departing from present inventive concept in conjunction with the embodiments.
Claims (5)
1. the microbicide compositions containing pyraclostrobin, it is characterized in that, the fungicide active ingredient comprised is pyraclostrobin, thiophanate-methyl and mancozeb, and in described microbicide compositions, the weight ratio of pyraclostrobin, thiophanate-methyl and mancozeb is 1:5:70,1:4:4,5:70:8,1:1:2 or 30:5:8.
2. the microbicide compositions containing pyraclostrobin according to claim 1, it is characterized in that, the content sum of described pyraclostrobin, thiophanate-methyl and mancozeb is 14 ~ 85% of described bactericidal composition gross weight.
3. the microbicide compositions containing pyraclostrobin according to claim 1, it is characterized in that, the formulation of described bactericidal composition is suspending agent, dispersibles oil-suspending agent, water dispersible granules, wetting powder.
4. the purposes of the microbicide compositions according to claim 1 or 2 or 3 in control farm crop fungus disease.
5. the purposes of microbicide compositions according to claim 4 in control farm crop fungus disease, it is characterized in that, described farm crop fungus disease comprises sigatoka, banana freckle, oranges and tangerines diplostomiasis, citrus anthracnose, ring rot of apple.
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| CN105104397A (en) * | 2015-09-25 | 2015-12-02 | 安徽美兰农业发展股份有限公司 | Pyraclostrobin and metiram compound water dispersible granules and preparation method thereof |
| CN106577755A (en) * | 2016-11-26 | 2017-04-26 | 防城港市林木良种繁育中心苗圃 | Medicine composition for preventing and treating tarspot disease of dalbergia odorifera |
| WO2019106662A1 (en) | 2017-11-29 | 2019-06-06 | Evogene Ltd. | Compositions and methods conferring resistance to fungal diseases |
| CN114423289A (en) * | 2019-06-24 | 2022-04-29 | Upl有限公司 | Synergistic fungicidal compositions |
| CN110982709B (en) * | 2019-12-25 | 2021-05-14 | 浙江大学 | Trichoderma asperellum capable of inhibiting growth of citrus alternaria alternata and application thereof |
| CN111543439A (en) * | 2020-05-19 | 2020-08-18 | 渭南职业技术学院 | Agricultural bactericidal composition |
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