CN108029690A - A kind of bactericidal composition containing isopropyl metsulfovax and fludioxonil - Google Patents
A kind of bactericidal composition containing isopropyl metsulfovax and fludioxonil Download PDFInfo
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- CN108029690A CN108029690A CN201711439333.4A CN201711439333A CN108029690A CN 108029690 A CN108029690 A CN 108029690A CN 201711439333 A CN201711439333 A CN 201711439333A CN 108029690 A CN108029690 A CN 108029690A
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- Prior art keywords
- fludioxonil
- isopropyl metsulfovax
- bactericidal composition
- metsulfovax
- isopropyl
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/02—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms
- A01N43/04—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with one hetero atom
- A01N43/06—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with one hetero atom five-membered rings
- A01N43/10—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with one hetero atom five-membered rings with sulfur as the ring hetero atom
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/34—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one nitrogen atom as the only ring hetero atom
- A01N43/36—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one nitrogen atom as the only ring hetero atom five-membered rings
Abstract
The present invention relates to a kind of bactericidal composition containing isopropyl metsulfovax and fludioxonil, its active ingredient is isopropyl metsulfovax and fludioxonil binary built.Wherein the mass ratio of isopropyl metsulfovax and fludioxonil is 1~50: 50~1, the quality parts ratio 1%~80% of active ingredient isopropyl metsulfovax and fludioxonil in preparation, remaining is the auxiliary element for allowing to use and receiving in pesticide, and the formulation of bactericidal composition of the present invention is missible oil, suspending agent, wettable powder, aqua, water dispersible granules, aqueous emulsion, microemulsion, granule, microcapsule formulations.It is mainly used for preventing cucumber downy mildew, downy mildew of garpe, lichee phytophthora root rot and gray mold of cucumber, graw mold of tomato etc..
Description
Technical field
The present invention relates to technical field of pesticide combination, more particularly to a kind of sterilization containing isopropyl metsulfovax and fludioxonil
Composition.
Background technology
3rd generation SDHI fungicide of Shi Yuan industry companies of isopropyl metsulfovax Japan research and development, can efficiently control Ascomycetes
With deuteromycetes fungi, there is prevention and treatment property.Registration listing is obtained since 2014 in Canada, the U.S. in succession, for preventing
Control grape, lettuce, rapeseed, short youngberry, on golf course and turf farms turfgrass a variety of gray molds and sclerotiniose
Evil.
Fludioxonil (fludioxonil；No. CAS：70124-77-5；Chemical name：4- (dioxies between the fluoro- 1,3- benzos of 2,2- bis-
Heterocyclic pentene -4- bases) -1- hydrogen-pyrroles -3- nitriles) belong to non-internal-absorting wide-spectrum bactericide, structure novel, by suppressing glucose
The related transfer of phosphorylated, and suppress the growth of fungal mycelium, ultimately result in germ death.The mechanism of action is unique, and existing
Biocide agent no interactions resistance.It is mainly used for the rotten Fusariumsp of prevention snow, wheat net bunt bacterium, rhizoctonia solani etc., has to gray mold
Special efficacy.
It is the maximally efficient means of controlling plant diseases using chemical agent.But apply single long-term continuous high dose
Chemical bactericide, be easy to cause the problems such as residual of medicament, environmental pollution and resistance to resistance to the action of a drug fungi are developed.Rational chemistry
Bactericide compounded or mixture have expand fungicidal spectrum, improve prevention effect, extend the optimum period for applying fertilizer, reduce dosage, reduce poisoning,
Reduce residual, delay the positive feature such as Antifungal resistance and drug-fast generation and development, bactericide compounded is to solve above-mentioned ask
One of maximally efficient method of topic.Develop new product fungicide price is constantly soaring, and in contrast, exploitation with research efficiently,
Low toxicity, the compounding of low-residual and mixture have small investment, the lead time is short and is paid attention to both at home and abroad, and numerous and confused increase develops
Dynamics.We screen and on the basis of field trial, filter out isopropyl metsulfovax and compounded with fludioxonil indoors, have bright
Aobvious synergistic effect.And people there is no to report at present on the bactericidal composition and application of isopropyl metsulfovax and the compounding of fludioxonil
Cross.
The content of the invention
Based on case above, present invention aims at provide a kind of new and effective pesticide sterilizing composite.It is mainly used for
Prevent cucumber downy mildew, downy mildew of garpe, lichee phytophthora root rot and gray mold of cucumber, graw mold of tomato etc..
Technical solution of the present invention is realized by following measures：
A kind of bactericidal composition containing isopropyl metsulfovax and fludioxonil, the active ingredient isopropyl thiophene bacterium of the bactericidal composition
Amine is compounded with fludioxonil two-spot, remaining is auxiliary element.Active ingredient isopropyl metsulfovax is with coughing up in wherein described bactericidal composition
The mass ratio of bacterium nitrile is 1~50: 50~1, and the bactericidal composition of the present invention is through toxicity test experimental verification, isopropyl metsulfovax
When mass ratio with fludioxonil is 1~10: 10~1, synergistic effect is preferable.
The formulations of pesticide that the bactericidal composition of the present invention can be prepared are missible oil, suspending agent, wettable powder, water
Agent, water dispersible granules, aqueous emulsion, microemulsion, granule, microcapsule formulations.Wherein active ingredient isopropyl metsulfovax exists with fludioxonil
Gross mass in preparation accounts for the 1%~80% of the whole quality of the pharmaceutical preparations, wherein when accounting for 10%~60%, toxicity and residual reach preferable
Balance, cost is relatively low.
The specific embodiment for the formulations of pesticide that bactericidal composition of the present invention is configured to is as follows：
The bactericidal composition is cream preparation, and the mass fraction of component is：1~50 part of isopropyl metsulfovax；Fludioxonil 1
~50 parts；10~30 parts of conventional emulsifier；20~50 parts of Conventional solvents；Conventional 1~5 part of synergist.The cream preparation it is specific
Production stage is first by active ingredient isopropyl metsulfovax with adding emulsifying agent, synergy after being completely dissolved in fludioxonil addition solvent
Agent stir evenly after into transparent and homogeneous oily liquids, it is filling, you can the cream preparation of the present composition is made.
The bactericidal composition is suspending agent, and the mass fraction of component is：1~50 part of isopropyl metsulfovax；Fludioxonil 1~
50 parts；5~20 parts of dispersant；1~5 part of antifreezing agent；0.1~2 part of thickener；0.1~0.8 part of defoamer；Penetrating agent 0~10
Part；0.1~5 part of pH adjusting agent；Water, surplus.Other auxiliary agents is first are mixed by the specific production stage of the suspending agent, through at a high speed
Shear-mixed is uniform, adds active ingredient isopropyl metsulfovax and fludioxonil, when abrading-ball 2~3 is small in ball crusher, makes a diameter equal
In below 5mm, you can the aqueous suspension formulations of the present composition are made.
The bactericidal composition is wettable powder, and the mass fraction of component is：1~50 part of isopropyl metsulfovax；Cough up bacterium
1~50 part of nitrile；3~10 parts of dispersant；1~5 part of wetting agent；Filler, surplus.The specific production stage of the wettable powder is：
Active ingredient isopropyl metsulfovax is mixed with fludioxonil and dispersant, wetting agent and filler by above-mentioned formula, in stirred tank
Uniform stirring, remixes uniformly, you can the wettable powder of the present composition is made after airslide disintegrating mill.
The bactericidal composition is water dispersible granules, and the mass fraction of component is：1~50 part of isopropyl metsulfovax；Cough up bacterium
1~50 part of nitrile；3~10 parts of dispersant；1~10 part of wetting agent；1~5 part of disintegrant；Filler, surplus.The tool of the water dispersible granules
Body production stage is：By above-mentioned formula by active ingredient isopropyl metsulfovax and fludioxonil and dispersant, wetting agent, disintegrant and
Filler is uniformly mixed, and is crushed with micro jet, through mediating, be then granulated in addition fluidized-bed granulation dryer,
Through sampling analysis after dry, screening, you can the water dispersible granules of the present composition are made.
The bactericidal composition is aqueous emulsion, and the mass fraction of component is：1~50 part of isopropyl metsulfovax；Fludioxonil 1~
50 parts；3~30 parts of emulsifying agent；5~15 parts of solvent；2~15 parts of stabilizer；1~5 part of antifreezing agent；0.1~8 part of defoamer；Thickening
0.2~2 part of agent；Water, surplus.The specific production stage of the aqueous emulsion is：First by isopropyl metsulfovax and fludioxonil, solvent and breast
Agent, cosolvent are added together, and make to be dissolved into uniform oil phase；By other pesticides such as part water, antifreeze, antimicrobial
Auxiliary agent mixes into uniform water phase；Oil phase is added into water phase while high-speed stirred in a kettle, slowly plus water is straight
To phase inversion point is reached, open cutter and carry out high speed shear, and add remaining water, shearing about half an hour, form oil-in-water type
Aqueous emulsion, you can the aqueous emulsion of the present composition is made.
The bactericidal composition is microemulsion, and the mass fraction of component is：1~50 part of isopropyl metsulfovax；Fludioxonil 1~
50 parts；10~30 parts of emulsifying agent, 1~8 part of antifreezing agent, 0.5~10 part of stabilizer, 20~50 parts of Conventional solvents cosolvent.Will be different
Third metsulfovax is completely dissolved with fludioxonil with cosolvent, adds the other compositions such as emulsifying agent, antifreezing agent stabilizer, uniformly mixed
Close, be eventually adding water, microemulsion can be made into after being sufficiently stirred.
The bactericidal composition is granule, and the mass fraction of component is：1~50 part of isopropyl metsulfovax；Fludioxonil 1~
50 parts；1~10 part of wetting dispersing agent；0.1~5 part of thickener；0.1~5 part of defoamer；Castor oil, surplus are supplied.Will effectively into
Divide each component such as isopropyl metsulfovax and fludioxonil, dispersant, stabilizer, defoamer and solvent to be mixed in the ratio of formula, be put into
In sand milling kettle after grinding, it is sent into mixing in mixer for well-distribution and gets product.
The bactericidal composition is aqua, and the mass fraction of component is：1~50 part of isopropyl metsulfovax；Fludioxonil 1~50
Part；0.1~30 part of wetting dispersing agent；2~8 parts of antifreezing agent；0.1~1 part of defoamer；0.1~3 part of thickener；Spreader-sticker 5~15
Part；Water, surplus are supplied.Active ingredient isopropyl metsulfovax is completely dissolved with fludioxonil, with cosolvent, dispersant is added, prevents
Freeze the other compositions such as agent, defoamer, uniformly mixing, is eventually adding water, after being sufficiently stirred, you can obtain finished product.
The bactericidal composition is microcapsule formulations, and the mass fraction of component is：1~50 part of isopropyl metsulfovax；Fludioxonil 1
~50 parts；5~20 parts of urea；5~20 parts of formaldehyde；5~20 parts of emulsifying dispersant；1~5 part of antifreezing agent；0.1~2 part of thickener；
0.1~0.8 part of defoamer；Water, surplus.Urea and formaldehyde (the amount ratio of material are added in the three-necked flask equipped with agitating device
About l：1.5~2.0) pH value for, adjusting solution with sodium hydroxide solution then heats to 70~80 DEG C, instead to 8~9 or so
It should obtain stable urea resin prepolymer.A certain amount of isopropyl metsulfovax is taken to be dissolved in fludioxonil in hexamethylene, and in solution
Middle addition emulsifying dispersant, with being vigorously stirred, is made into the O/W types using the aqueous solution containing emulsifying dispersant as water phase and stablizes breast
Liquid.Above-mentioned urea resin prepolymer is added in lotion, pH value is adjusted, polymerisation occurs under acid catalysed conditions, makes oil
Phase material is wrapped, and forms microcapsule granule.Slowly heating, cures, and temperature control is at 40~50 DEG C, hardening time 1h.
Selection adds suitable auxiliary agent, you can the microcapsules that must stablize.
Wherein above-described emulsifying agent is selected from calcium dodecyl benzene sulfonate and aliphatic acid polyethenoxy ether, alkyl phenol polyoxy
Ethene ether sulfosuccinates, styrylphenol polyoxyethylene ether, nonylphenol polyoxyethylene ether, castor oil polyoxyethylene ether,
Any one of aliphatic acid polyethenoxy base ester, polyoxyethylene aliphatic alcohol ether or more than one any mixtures than composition.
The solvent is dimethylbenzene or biodiesel, toluene, diesel oil, methanol, ethanol, n-butanol, isopropanol, rosin-based
Vegetable oil code name is ND-45, solvent naphtha, dimethylformamide, dimethyl sulfoxide (DMSO), and the one or more in water equal solvent are appointed
Anticipate than the mixture of composition.
The dispersant is LG-3, GY-D1252, GY-D1256, SNWGF-01 selected from polycarboxylate code name, lignin
Sulfonate code name is 201107,201108, alkylphenol polyoxyethylene ether methyl ether condensate sulfate, alkylsulfonate calcium salt, naphthalene
Sulfonic formaldehyde condensation compound sodium salt, alkylphenol polyoxyethylene ether, polyoxyethylene carboxylate, aliphatic amine polyoxyethylene ether, glyceride
One or more of fat acid ester polyoxyethylene ether.
The wetting agent is selected from lauryl sodium sulfate, and calcium dodecyl benzene sulfonate, Nekal BX, moistens bleeding agent F,
Alkylbenzenesulfonate polyoxyethylene triphen phosphenylic acid salt dimly, spaonin powder, silkworm excrement, the one or more in spaonin powder.
The disintegrant is selected from bentonite, urea, ammonium sulfate, aluminium chloride, citric acid, succinic acid, in sodium acid carbonate
It is one or more.
The thickener is selected from xanthans, carboxymethyl cellulose, carboxyethyl cellulose, methylcellulose, Magnesiumaluminumsilicate,
It is one or more in polyvinyl alcohol.
The stabilizer is selected from sodium citrate, one kind in resorcinol.
The antifreezing agent is selected from ethylene glycol, propane diols, the one or more in glycerine.
The defoamer is selected from silicone oil, silicone compound, C10-20Saturated fat acids compound, C8-10Fatty alcohol
It is one or more.
The filler is selected from kaolin, diatomite, bentonite, attapulgite, white carbon, starch, in precipitated calcium carbonate
One or more.
The present invention has obvious synergistic effect using isopropyl metsulfovax and composite bactericide of the fludioxonil as active ingredient, prolongs
The slow drug-fast generation in key, and production cost and use cost are reduced into, it is mainly used for preventing cucumber downy mildew, grape downy mildew
Sick, lichee phytophthora root rot and gray mold of cucumber, graw mold of tomato etc..
Embodiment
To make technical scheme, purpose and advantage are more clearly understood, present invention specific examples below
Illustrate, but the present invention is not limited to these examples.The effect experiment of the present invention uses indoor biometrics and field trial phase
With reference to mode, unless otherwise instructed, ratio mentioned below is all quality parts ratio.
Embodiment：Isopropyl metsulfovax is tested with fludioxonil different ratio co-toxicity.
1.1 reagent agent
95% fludioxonil active compound, 95% isopropyl metsulfovax active compound, above-mentioned active compound is by extra large Lear medicine company limited company
Research and development department provides.
1.2 experiment targets
From Shandong Shouguang never applied isopropyl metsulfovax and the cucumber of fludioxonil and same type it is potted plant gather and separate, supply
Try cucumber variety：Chang Chun Mi Ci.
1.3 test method
1.3.1 medicament is prepared
Acetone solution active compound is first used, suitable two active compound is made into by several different ratios according to the result of preliminary experiment,
It is stand-by that each processing is diluted to several concentration gradients respectively with acetone again.
By the cultivation of susceptible cucumber variety Chang Chun Mi Ci in pot for growing seedlings, it is placed in greenhouse and cultivates, plant grows to three to four leaves
After phase, the blade of identical leaf age is gathered, culture and measure for cucumber downy mildew germ.
1.3.2 the culture of cucumber downy mildew germ and the preparation of spore suspension
Cucumber downy mildew germ is cultivated using plants method under conditions of 20 DEG C, 12h alternation of light and darkness, turns generation per 30d
Culture 1 time.With the conidium on sterile water elution incidence of leaf during inoculation, it is l × 10 to be configured to spore concentration6A/mL's
Suspension.
1.3.3 strains tested sensitivity testing
Toxicity test is carried out using leaf dish moisturizing method.The blade of collection is first prepared into the leaf dish of a diameter of 1.5cm, at random
Mix, be respectively placed in the series concentration liquid configured and soak lh, each 50 leaf dishes of concentration, are tested with the place of not adding medicine
Manage as blank control, after immersion, leaf is face-up placed on the blotting paper of identical liquor strength wetting, in leaf dish
Liquid blot, by prepared spore suspension l0L be inoculated in leaf dish center, room temperature place 5min after, be placed in 20 DEG C, 12h
Cultivated under conditions of alternation of light and darkness, the onset area in leaf dish is measured after 10d, calculates EC50。
The sick level of percentage division of leaf dish area is accounted for according to lesion area
0 grade：It is disease-free；
1 grade：Sorus area accounts for less than the 5% of whole leaf area；
3 grades：Sorus area accounts for below the 6%-10% of whole leaf area；
5 grades：Sorus area accounts for below the 11%-20% of whole leaf area；
7 grades：Sorus area accounts for below the 21%-50% of whole leaf area；
9 grades：Sorus area accounts for more than the 50% of whole leaf area.
1.3.4 mixture toxicity test and interpretation of result
The toxicity test of mixture is carried out according to mixed ratio with single dose toxicity test method.
If compare the death rate<5%, do not correct, the control death rate is corrected between 5%-20% by formula 2, is compareed
The death rate>20%, experiment need to reform.
Using drug concentration (mg/L) to numerical value as independent variable x, using the niqueMin of corrected mortality as dependent variable y, respectively
Virulence regression equation is established, the EC of single dose and each proportioning mixture is calculated using DPS softwares50Poison altogether is calculated according to the abundant methods of Sun Yun
Coefficient (CTC).Co-toxicity coefficient CTC, calculation formula are as follows：(using isopropyl metsulfovax as standard agent, 100) its toxicity index is：
The EC of toxicity index (TI)=isopropyl metsulfovax of fludioxonil50The EC of/fludioxonil50×100
The EC of true toxicity index (ATI)=isopropyl metsulfovax of M50The EC of/M50×100
TI × P fludioxonils of TI × P isopropyls metsulfovax+fludioxonil of theoretical toxicity index (TTI)=isopropyl metsulfovax of M
TTI × 100 of the ATI/M of co-toxicity coefficient (CTC)=M of M
In formula：
M is the mixture of isopropyl metsulfovax and fludioxonil different ratio
P isopropyls metsulfovax is isopropyl metsulfovax ratio shared in mixture
P fludioxonils are fludioxonil ratio shared in mixture.
2.1 toxicity test results
Toxicity test of 1 fludioxonil of table with isopropyl metsulfovax to cucumber downy mildew
As can be seen from the table, the result of the test of different proportion proportioning shows, dilutes equal table respectively in active ingredient ratio
Reveal stronger synergistic effect, wherein using isopropyl metsulfovax and fludioxonil as 1:10~10:Synergistic effect good suggestion pair when 1
Suitable proportion 1:10~10:1 or so mixture preparation carries out further field control effectiveness test, to evaluate its field practical application effect
Fruit.
3rd, field trial prevention graw mold of tomato, the experimental result of cucumber downy mildew
3.1 field trials prevent graw mold of tomato
3.1.1 test method
Experiment is located in Jiangsu Province Yancheng City Yandu District Lou Wang towns Lou Yang villages vinyl house, to spray equivalent clear water as blank
Control, often processing are repeated 3 times, plot area 25m2, random district's groups arrangement, uses blade face uniform in florescence, that is, gray mold initial phase
The method dispenser of spraying.
3.1.2 control time and number
Disease radix is investigated before dispenser, 7 days after the 1st dispenser, 7 days after the 2nd dispenser, is respectively investigated once within 14 days, altogether
Meter investigation 4 times.Per 5 points of samplings of cell, 2 plants every, totally 10 plants, every plant of upper, middle and lower portion takes 5 leaves, investigates the gray mold state of an illness
Index.
Blade occurring degree grade scale：
0 grade -- it is disease-free；
1 grade -- single blade has scab 3；
3 grades -- single blade has scab 4~6；
5 grades -- single blade has scab 7~10；
7 grades -- single blade has scab 11~20；
9 grades -- single blade scab accounts for leaf area more than 1/4.
3.1.3 drug effect computational methods
Sick leaf rate (the %)=disease number of sheets/investigation total number of sheets × 100
Disease index=∑ (the disease numbers of sheets at different levels × opposite value of series)/(investigation total number of sheets × 9) × 100
Prevention effect (%)=(1- (disease index after disease index × treatment region medicine before blank district medicine)/(blank pair
According to disease index before disease index after area's medicine × treatment region medicine)) × 100.
3.1.4 poisoning investigation method
Whether continuous 20d range estimations medicament has poisoning to crop after dispenser.
3.1.5 result of the test and analysis
The effect of each processing prevention graw mold of tomato.(table 2)
30% isopropyl metsulfovax fludioxonil composite bactericide controls positive effect height for graw mold of tomato as shown in Table 2
In isopropyl metsulfovax and fludioxonil single dose, bactericidal effect is incremented by with the increase of dosage.Estimated according to field, in test dose model
In enclosing, plant growth is normal, and each treatment agent does not occur the poisoning phenomenon to tomato, and it is safe to wheat to illustrate it.Build
The view fungicide different from the mechanism of action is used in mixed way to delay the drug-fast generation of germ.
3.2 field trials prevent cucumber downy mildew
3.2.1 test method
Twice, equivalent clear water is sprayed in check plot for dispenser altogether for experiment.When making up a prescription, after first medicament is fully dissolved with a small amount of water, then
Add suitable quantity of water and carry out complete stool spraying treatment, even spraying.Use power driven sprayer during spray, operating pressure for 0.3~
0.4MPa, nozzle aperture 1.3mm.Cell spouting liquid is 40~50kg/667m2, continuous dispenser twice, 10 days intervals, by medicine
Liquid uniformly sprays application to crop complete stool.
3.2.2 investigation method
Shandong Shouguang is experimental field located at, the plastic tent cucumber for selecting natural occurrence is experimental field, and soil fertility is medium, irrigation and drainage side
Just.Using bilinear sampling method, take per cell at 5 points, look into 5 caves, and 2 blades in every plant of fixed middle part carry out fixed point inspection during investigation at every
Look into.
It is classified according to cucumber downy mildew grade scale, record total strain number, diseased plant number, severity, calculating diseased plant rate,
Disease index and preventive effect.
Cucumber downy mildew grade scale is
0 grade：Blade disease-free spot；
1 grade：Lesion area accounts for less than the 5% of whole leaf area；
3 grades：Lesion area accounts for the 6%~10% of whole leaf area；
5 grades：Lesion area accounts for the 11%~25% of whole leaf area；
7 grades：Lesion area accounts for the 26%~50% of whole leaf area；
9 grades：Lesion area accounts for more than the 50% of whole leaf area.
Experiment is investigated 3 times altogether, i.e., disease index is investigated before medicine, preventive effect investigation in 5 days after the 1st medicine, 5 days and 18 after 2 medicines
Its preventive effect is investigated.
(3) poisoning is investigated
Whether continuous 7d range estimations medicament has poisoning to crop after dispenser.
(4) drug effect computational methods
Sick leaf rate (the %)=disease number of sheets/investigation total number of sheets × 100
Disease index=∑ (the disease numbers of sheets at different levels × opposite value of series)/(investigation total number of sheets × 9) × 100
Prevention effect (%)=(1- (disease index after disease index × treatment region medicine before blank district medicine)/(blank pair
According to disease index before disease index after area's medicine × treatment region medicine)) × 100
(5) field control effectiveness test result of the test
3 each test medicine of table prevents the experiment effect of cucumber downy mildew
As shown in Table 3,30% isopropyl metsulfovax combines the effect for preventing cucumber downy mildew with fludioxonil mixture than more significant,
The significant effect of complex preparation is better than two kinds of single doses, not only significantly improves the prevention effect for downy mildew, but also further
Its lasting period is extended, and is produced under the poisoning observation of continuous 7 days without poisoning.
In conclusion the bactericidal composition of the invention containing isopropyl metsulfovax and fludioxonil, to graw mold of tomato, cucumber cream
Mildew has good prevention effect, and it is safe to Target crops.Complex preparation not only increases preventive effect, and expands and kill
Bacterium is composed, and is widened use scope, is reduced cost, plays the role of that a medicine is simultaneous to be controlled to multiple diseases, mitigates manpower and materials, improves production
Benefit.So the invention of this complex preparation is of great significance society's tool with promoting.
Claims (4)
- A kind of 1. bactericidal composition containing isopropyl metsulfovax and fludioxonil, it is characterised in that：The bactericidal composition it is effective into It is divided into isopropyl metsulfovax and fludioxonil binary built, remaining is auxiliary element, wherein active ingredient isopropyl metsulfovax and fludioxonil Mass ratio be 1~50: 50~1.
- 2. bactericidal composition according to claim 1, it is characterised in that：Isopropyl metsulfovax and fludioxonil in the formulation total Weight accounts for the 1%~80% of the whole quality of the pharmaceutical preparations.
- 3. bactericidal composition according to claim 2, it is characterised in that：Isopropyl metsulfovax and fludioxonil in the formulation total Weight accounts for the 5%~60% of the whole quality of the pharmaceutical preparations.
- 4. according to the bactericidal composition described in claim 1 or 2 or 3, it is characterised in that：The formulation of the bactericidal composition is breast Oil, suspending agent, aqua, wettable powder, water dispersible granules, aqueous emulsion, microemulsion, granule, microcapsule formulations.
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| CN108967427A (en) * | 2018-10-25 | 2018-12-11 | 广东广康生化科技股份有限公司 | A kind of bactericidal composition and its application containing zoxamide and isopropyl metsulfovax |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108967427A (en) * | 2018-10-25 | 2018-12-11 | 广东广康生化科技股份有限公司 | A kind of bactericidal composition and its application containing zoxamide and isopropyl metsulfovax |
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| WW01 | Invention patent application withdrawn after publication |