CN107980785A - A kind of bactericidal composition containing benzo alkene fluorine bacterium azoles and fludioxonil - Google Patents
A kind of bactericidal composition containing benzo alkene fluorine bacterium azoles and fludioxonil Download PDFInfo
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- CN107980785A CN107980785A CN201711439305.2A CN201711439305A CN107980785A CN 107980785 A CN107980785 A CN 107980785A CN 201711439305 A CN201711439305 A CN 201711439305A CN 107980785 A CN107980785 A CN 107980785A
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- fludioxonil
- bacterium azoles
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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
- A01N43/34—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
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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
- A01N43/48—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with two nitrogen atoms as the only ring hetero atoms
- A01N43/56—1,2-Diazoles; Hydrogenated 1,2-diazoles
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Abstract
The present invention relates to a kind of bactericidal composition containing benzo alkene fluorine bacterium azoles and fludioxonil, its active ingredient is benzo alkene fluorine bacterium azoles and fludioxonil binary built.Wherein the mass ratio of benzo alkene fluorine bacterium azoles and fludioxonil is 1~50: 50~1, active ingredient benzo alkene fluorine bacterium azoles and the quality parts ratio of fludioxonil 1%~80% 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 the diseases such as all kinds of gray molds and wheat powdery mildew.
Description
Technical field
The present invention relates to technical field of pesticide combination, more particularly to a kind of killing containing benzo alkene fluorine bacterium azoles and fludioxonil
Bacteria composition.
Background technology
Benzo alkene fluorine bacterium azoles belong to succinate dehydrogenase inhibitors (SDHI) series bactericidal agent, wide spectrum, efficiently, have longer
Lasting effect, can prevent foliage disease and soil surface characters extensively, be important resistance management tool.Benzo alkene fluorine bacterium azoles are small
The outstanding preventive effect to Major Diseases is all presented on many crops such as wheat, corn and special crop.The product to wheat leaf blight,
The cercospora black spot of peanut, take-all and wheat basal stem rot have good prevention effect, especially to wheat powdery mildew, corn stigma
Disease and gray mold have special efficacy, have outstanding preventive effect to Asian Soybean Rust.With methoxy acrylic and triazole bactericidal agent
No interactions resistance.
Fludioxonil (Fludioxoni, No. CAS：70124-77-5 chemical names：4- (dioxas between the fluoro- 1,3- benzos of 2,2- bis-
Cyclopentene -4- bases) -1- hydrogen-pyrroles -3- nitriles) belong to non-internal-absorting wide-spectrum bactericide.Fludioxonil structure novel, by suppressing Portugal
The related transfer of grape sugar phosphorylated, and suppress the growth of fungal mycelium, ultimately result in germ death.The mechanism of action is unique, with
Existing biocide agent no interactions resistance.It is mainly used for the rotten Fusariumsp of prevention snow, wheat net bunt bacterium, rhizoctonia solani etc., to grey mold
Disease has 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 benzo alkene fluorine bacterium azoles and compounded with fludioxonil indoors, have
Obvious synergistic effect.And people there is no to report at present on the bactericidal composition and application of benzo alkene fluorine bacterium azoles and the compounding of fludioxonil
Road mistake.
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 the diseases such as all kinds of gray molds and wheat powdery mildew.
Technical solution of the present invention is realized by following measures：
It is a kind of containing benzo alkene fluorine bacterium azoles and fludioxonil/bactericidal composition, the active ingredient benzo of the bactericidal composition
Alkene fluorine bacterium azoles are compounded with fludioxonil two-spot, remaining is auxiliary element.Active ingredient benzo alkene fluorine in wherein described bactericidal composition
The mass ratio of bacterium azoles and fludioxonil is 1~50: 50~1, and the bactericidal composition of the present invention is through toxicity test experimental verification, benzene
And the mass ratio of alkene fluorine bacterium azoles and fludioxonil be 1~10: 10~1 when, 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 benzo alkene fluorine bacterium azoles and fludioxonil
Gross mass in the formulation accounts for the 1%~80% of the whole quality of the pharmaceutical preparations, wherein when accounting for 10%~60%, toxicity and residual reach compared with
Good balance, cost are 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 benzo alkene fluorine bacterium azoles；Cough up bacterium
1~50 part of nitrile；10~30 parts of conventional emulsifier；20~50 parts of Conventional solvents；Conventional 1~5 part of synergist.The tool of the cream preparation
Body production stage for first active ingredient benzo alkene fluorine bacterium azoles and fludioxonil are added in solvent be completely dissolved after add emulsifying agent,
Synergist 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 benzo alkene fluorine bacterium azoles；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 benzo alkene fluorine bacterium azoles and fludioxonil, when abrading-ball 2~3 is small in ball crusher, makes a diameter
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 benzo alkene fluorine bacterium azoles；Cough up
1~50 part of bacterium nitrile；3~10 parts of dispersant；1~5 part of wetting agent；Filler, surplus.The specific production stage of the wettable powder
For：Active ingredient benzo alkene fluorine bacterium azoles are mixed with fludioxonil and dispersant, wetting agent and filler by above-mentioned formula, are being stirred
Uniform stirring in kettle, is being uniformly mixed, 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 benzo alkene fluorine bacterium azoles；Cough up
1~50 part of bacterium nitrile；3~10 parts of dispersant；1~10 part of wetting agent；1~5 part of disintegrant；Filler, surplus.The water dispersible granules
Specifically production stage is：By above-mentioned formula by active ingredient benzo alkene fluorine bacterium azoles and fludioxonil and dispersant, wetting agent, disintegrant
And filler is uniformly mixed, crushed with micro jet, through mediating, then add in fluidized-bed granulation dryer and made
Through sampling analysis after grain, 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 benzo alkene fluorine bacterium azoles；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；Increase
Thick dose 0.2~2 part；Water, surplus.The specific production stage of the aqueous emulsion is：First by benzo alkene fluorine bacterium azoles and fludioxonil, solvent
It is added together with emulsifying agent, cosolvent, makes to be dissolved into uniform oil phase；By others such as part water, antifreeze, antimicrobials
Insecticides adjuvant mixes into uniform water phase；Oil phase is added into water phase while high-speed stirred in a kettle, is slowly added
For water until reaching phase inversion point, unlatching cutter carries out high speed shear, and adds remaining water, shearing about half an hour, forms water bag
The aqueous emulsion of oil type, 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 benzo alkene fluorine bacterium azoles；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
Benzo alkene fluorine bacterium azoles are completely dissolved with fludioxonil with cosolvent, add the other compositions such as emulsifying agent, antifreezing agent stabilizer, uniformly
Mixing, is 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 benzo alkene fluorine bacterium azoles；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 be effective
The each component such as component benzo alkene fluorine bacterium azoles and fludioxonil, dispersant, stabilizer, defoamer and solvent is mixed in the ratio of formula,
It is put into sand milling kettle after grinding, 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 benzo alkene fluorine bacterium azoles；Fludioxonil 1~
50 parts；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 parts；Water, surplus are supplied.Active ingredient benzo alkene fluorine bacterium azoles are completely dissolved with fludioxonil, with cosolvent, are added scattered
The other compositions such as agent, antifreezing agent, defoamer, uniformly mixing, is eventually adding water, after being sufficiently stirred, you can obtains finished product.
The bactericidal composition is microcapsule formulations, and the mass fraction of component is：1~50 part of benzo alkene fluorine bacterium azoles；Cough up bacterium
1~50 part of nitrile；5~20 parts of urea；5~20 parts of formaldehyde；5~20 parts of emulsifying dispersant；1~5 part of antifreezing agent；Thickener 0.1~2
Part；0.1~0.8 part of defoamer；Water, surplus.Urea and the formaldehyde (amount of material are added in the three-necked flask equipped with agitating device
Than being about l：1.5~2.0) pH value for, adjusting solution with sodium hydroxide solution then heats to 70~80 DEG C to 8~9 or so,
Reaction obtains stable urea resin prepolymer.A certain amount of benzo alkene fluorine bacterium azoles are taken to be dissolved in fludioxonil in hexamethylene, and
Emulsifying dispersant is added in solution, with being vigorously stirred, the O/W types using the aqueous solution containing emulsifying dispersant as water phase is made into and stablizes
Lotion.Above-mentioned urea resin prepolymer is added in lotion, pH value is adjusted, polymerisation occurs under acid catalysed conditions, makes
Oil phase substance 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 benzo alkene fluorine bacterium azoles and composite bactericide of the fludioxonil as active ingredient,
Delay the drug-fast generation in key, and reduce into production cost and use cost, be mainly used for preventing all kinds of gray molds and wheat
The diseases such as powdery mildew.
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：Benzo alkene fluorine bacterium azoles are tested with fludioxonil different ratio co-toxicity.
1.1 reagent agent
98% fludioxonil active compound, 90% benzo alkene fluorine bacterium azoles active compound, above-mentioned active compound is by the extra large limited public affairs of Lear medicine company share
Research and development department is taken charge of to provide.
1.2 experiment targets
From Shandong Shouguang never applied benzo alkene fluorine bacterium azoles and the cucumber of fludioxonil and same type it is potted plant gather and separate,
For trying 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 gray mold of cucumber germ.
1.3.2 the culture of powdery mildew of cucumber germ and the preparation of spore suspension
Powdery mildew of cucumber 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 benzo alkene fluorine bacterium azoles as standard agent, its toxicity index is
100)：
The EC of the toxicity index (TI) of fludioxonil=benzo alkene fluorine bacterium azoles50The EC of/fludioxonil50×100
The EC of the true toxicity index (ATI) of M=benzo alkene fluorine bacterium azoles50The EC of/M50×100
TI × P of TI × P benzos alkene fluorine bacterium azoles+fludioxonil of the theoretical toxicity index (TTI) of M=benzo alkene fluorine bacterium azoles is coughed up
Bacterium nitrile
TTI × 100 of the ATI/M of co-toxicity coefficient (CTC)=M of M
In formula：
M is benzo alkene fluorine bacterium azoles and the mixture of fludioxonil different ratio
P benzo alkene fluorine bacterium azoles are benzo alkene fluorine bacterium azoles 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 benzo alkene fluorine bacterium azoles to gray mold of cucumber
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 benzo alkene fluorine bacterium azoles and fludioxonil as 1:10~10:Synergistic effect good suggestion when 1
To suitable proportion 1:10~10:1 or so mixture preparation carries out further field control effectiveness test, to evaluate its field practical application
Effect.
3rd, field trial prevention gray mold of cucumber, the experimental result of wheat powdery mildew disease
3.1 field trials prevent gray mold of cucumber
3.1.1 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.
3.1.2 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 gray mold of cucumber grade scale, record total strain number, diseased plant number, severity, calculating diseased plant rate,
Disease index and preventive effect.
Powdery mildew of cucumber 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.
3.1.3 poisoning is investigated
Whether continuous 7d range estimations medicament has poisoning to crop after dispenser.
3.1.4 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.
3.1.4 field control effectiveness test result of the test
2 each test medicine of table prevents the experiment effect of gray mold of cucumber
As shown in Table 2,24% benzo alkene fluorine bacterium azoles combined with fludioxonil mixture prevention gray mold of cucumber effect it is relatively aobvious
Writing, the significant effect of complex preparation is better than two kinds of single doses, not only significantly improves the prevention effect for powdery mildew, but also into one
Step extends its lasting period, and is produced under the poisoning observation of continuous 7 days without poisoning.
3.2 field trials prevent wheat powdery mildew
3.2.1 test method
Test site is wheat for studying thing, kind is short morning 781, is broadcasted sowing, growing way in Fengyang County capital town great Tong Qiao villages
Preferably, experiment is set sets control totally 10 processing per acre.Often processing is repeated 4 times, random district's groups arrangement, 30 square metres of plot area.
3.2.2 control time and number
Before dispenser, after the 1st medicine 7 days, 14 days after 7 days and the 2nd dispenser, per cell using 5 points of samplings of diagonal, often
20 plants of point investigation, 2 leaves are taken for every plant before blooming from upper end, and every plant of Post flowering takes 2 leaf of sword-like leave, and investigation occurring degree is classified by leaf,
Calculating disease refers to and prevention effect.
Grade scale is as follows：
0 grade：It is disease-free；
1 grade：Lesion area accounts for less than the 5% of full wafer leaf area；
3 grades：Lesion area accounts for the 6%-15% of full wafer leaf area；
5 grades：Lesion area accounts for the 16%-25% of full wafer leaf area；
7 grades：Lesion area accounts for the 26%-50% of full wafer leaf area；
9 grades：Lesion area accounts for more than the 50% of full wafer leaf area.
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.
3.2.4 poisoning investigation method
Whether continuous 14d range estimations medicament has poisoning to crop after dispenser.
3.2.5 result of the test and analysis
The effect of each processing prevention wheat powdery mildew.
24% benzo alkene fluorine bacterium azoles control positive effect with fludioxonil composite bactericide for wheat powdery mildew as shown in Table 3
Higher than benzo alkene fluorine bacterium azoles and fludioxonil single dose, bactericidal effect is incremented by with the increase of dosage.Estimated according to field, in experiment agent
In the range of amount, plant growth is normal, and each treatment agent does not occur the poisoning phenomenon to wheat, and it is safety to wheat to illustrate it
's.It is recommended that the fungicide different from the mechanism of action is used in mixed way to delay the drug-fast generation of germ.
In conclusion the bactericidal composition of the invention containing benzo alkene fluorine bacterium azoles and fludioxonil, to wheat powdery mildew, cucumber
Gray mold has good prevention effect, and it is safe to Target crops.Complex preparation not only increases preventive effect, and expands
Fungicidal spectrum, widens use scope, reduces cost, plays the role of that a medicine is simultaneous to be controlled to multiple diseases, mitigates manpower and materials, improves life
Produce 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 benzo alkene fluorine bacterium azoles and fludioxonil, it is characterised in that：The bactericidal composition it is effective Component is benzo alkene fluorine bacterium azoles and fludioxonil binary built, remaining is auxiliary element, wherein active ingredient benzo alkene fluorine bacterium azoles with The mass ratio of fludioxonil is 1~50: 50~1.
- 2. bactericidal composition according to claim 1, it is characterised in that：Benzo alkene fluorine bacterium azoles and fludioxonil are in the formulation Gross 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：Benzo alkene fluorine bacterium azoles and fludioxonil are in the formulation Gross 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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| CN201711439305.2A Withdrawn CN107980785A (en) | 2017-12-27 | 2017-12-27 | A kind of bactericidal composition containing benzo alkene fluorine bacterium azoles and fludioxonil |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108576008A (en) * | 2018-05-23 | 2018-09-28 | 深圳诺普信农化股份有限公司 | Bactericidal composition and its application |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108576008A (en) * | 2018-05-23 | 2018-09-28 | 深圳诺普信农化股份有限公司 | Bactericidal composition and its application |
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