CN107853331A - bactericidal composition containing bromothalonil - Google Patents
bactericidal composition containing bromothalonil Download PDFInfo
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- CN107853331A CN107853331A CN201711367808.3A CN201711367808A CN107853331A CN 107853331 A CN107853331 A CN 107853331A CN 201711367808 A CN201711367808 A CN 201711367808A CN 107853331 A CN107853331 A CN 107853331A
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- Prior art keywords
- bromothalonil
- bactericidal composition
- jia betel
- active ingredient
- extracts
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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
- A01N65/00—Biocides, pest repellants or attractants, or plant growth regulators containing material from algae, lichens, bryophyta, multi-cellular fungi or plants, or extracts thereof
-
- 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
- A01N37/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids
- A01N37/34—Nitriles
-
- 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
- A01N65/00—Biocides, pest repellants or attractants, or plant growth regulators containing material from algae, lichens, bryophyta, multi-cellular fungi or plants, or extracts thereof
- A01N65/08—Magnoliopsida [dicotyledons]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change
Abstract
The present invention relates to a kind of bactericidal composition containing bromothalonil, active ingredient is made up of false Betel extracts and bromothalonil, and the weight ratio of false Betel extracts and bromothalonil is 10 1:1‑25.The bactericidal composition that Yi Jia Betel extracts and bromothalonil of the present invention carry out mixture is used to prevent and treat anthracnose of crop, obvious synergy, lasting period length, to Crop securify；Reduce chemical pesticide usage amount simultaneously, reduce residual quantity of the agricultural chemicals on crops, it is friendly to crop, Environmental security, meet the development trend of current agricultural chemicals.
Description
Technical field
The present invention relates to pesticides application technical field, and in particular to the bactericidal composition containing bromothalonil.
Background technology
Jia Betel (scientific names：Piper sarmentosum Roxb.), also known as clam beach wormwood, false beach wormwood, mountain beach wormwood etc., it is Piperaceae pepper
Platymiscium.False Betel originates in Chinese Guangdong, Guangxi, Fujian, Yunnan, Guizhou and Tibet (Motuo) each provinces and regions, is born in by sylvan life or village
On wetland.It is Jia Betel acrid flavours, warm-natured, nontoxic.It is pharmaceutically acceptable, radical cure treating rheumatic ostealgia, traumatic injury, cough due to wind-cold evil, gestation and postpartum water
Swell；Also edible, people are usually cooked with its leaf, and its delicious food is often mentioned in the same breath with purple perilla.False Betel stems, Ye Shui
Immersion liquid has inhibitory action to staphylococcus aureus, shigella flexneri etc.., Jia Betel also have antipyretic-antalgic, anti-inflammatory, drop simultaneously
The effect such as bone healing after hypoglycemia, anti-oxidant and promotion fracture.Report on the effect of Jia Betel extracts killing pests and suppressing bacteria at present
Road is less, and Chinese Patent Application No. 2009102358119 discloses a kind of Jia Betel extracts and its in killing pests and suppressing bacteria agent is prepared
Application, Jiang Jia Betel extracts be used for prepare pesticide-germicide microemulsion, it is to prodenia litura, roadway caving mining, radish aphid, bajiao banana
Anthrax bacteria and rubber anthrax bacteria have good prevention effect.
Bromothalonil (Bromothalonil), chemical name are the bromomethyl glutaronitrile of 2- bromines 2, are a kind of new and effective sterilizations
Agent, it can be absorbed rapidly by somatic cells, its normal development of Conduction Interference in cell, so as to have the function that antibacterial, sterilization.
Bromothalonil is a kind of wide spectrum, bactericide efficiently, less toxic, can suppress and root out fungi, the growth of bacterium, algae, to crops
Disease has preferable prevention effect, has special efficacy to anthracnose.Be widely used in fruit tree, grape, vegetables, cotton, peanut, watermelon,
The various crops such as tobacco, tea tree, flowers, preventing and treating anthracnose, scab, shot hole, powdery mildew, rust, damping-off, samping off,
A variety of fungoids such as rhizome maize ear rot, canker, bacterial wilt, angular leaf spot, bacteroidal disease.
At present using Jia Betel as raw material, the research that preventing and treating anthracnose of crop is applied to bromothalonil compounded is reported there has been no related
Road.
The content of the invention
It is good the technical problem to be solved in the present invention is to provide a kind of prevention effect, the germ resistance to the action of a drug can be delayed to produce, reduced
Chemical pesticide usage amount, the bactericidal composition containing bromothalonil friendly to crop, Environmental security, in preventing and treating cucumber anthracnose, peppery
Purposes in green pepper anthracnose and mandarin tree anthracnose.
It is as follows that the present invention solves the technical scheme that above-mentioned technical problem is taken：Bactericidal composition containing bromothalonil, effectively
The weight ratio that composition forms , Jia Betel extracts and bromothalonil You Jia Betel extracts and bromothalonil is 10-1:1-25.
Preferably, the weight ratio of described bactericidal composition , Jia Betel extracts and bromothalonil is 1:5、5:1.
The Jia Betel method for preparing extractive：Jia Betel rhizomes are cleaned, dries in the shade, is crushed with pulverizer, cross 40-60 mesh sieves,
Obtain crushed material；95% ethanol is measured according to weight than adding 8-12 times, after soaking at room temperature 8-10d, use Bu Shi in gained crushed material
Funnel filters, and collects filtrate, is extracted 1-2 times with method, merges all filtrates；Then by filtrate with Rotary Evaporators at 45 DEG C -55
DEG C it is concentrated under reduced pressure into the paste that relative density is 1.10-1.20；The weight 100-200 mesh column chromatography silicon such as addition in paste
Glue mixes powder, the dry method upper prop column chromatography silica gel of 200-300 mesh (filler of chromatographic column for) is used, using petroleum ether as solvent
Eluted, by the eluent of collection it is concentrated after dried again in 45 DEG C of electric heating constant-temperature blowing drying boxes, produce Jia Betel extraction
Thing.
The active ingredient of described bactericidal composition accounts for the 1-70% of bactericidal composition gross weight, and surplus is that can be connect on agricultural chemicals
The auxiliary element received.
Described bactericidal composition is added made of corresponding auxiliary element according to method known in those skilled in the art
Formulation is wettable powder, water dispersible granules, suspending agent or aqueous emulsion.
It is dispersant, wetting agent, emulsifying agent, antifreezing agent, increasing that bactericidal composition of the present invention, which is subjected to auxiliary element,
Thick dose, stabilizer, binding agent, disintegrant, defoamer, solvent, filler, the conventional functionality auxiliary agent such as deionized water, be all agricultural chemicals
Commonly use in formulation art or allow the various composition used, be not particularly limited, specific composition and dosage are led to according to recipe requirements
Cross simple experiment determination.
Beneficial effect of the present invention：The bactericidal composition that Yi Jia Betel extracts and bromothalonil of the present invention carry out mixture is used to prevent and treat
Anthracnose of crop, obvious synergy, lasting period length, to Crop securify；Reduce chemical pesticide usage amount simultaneously, drop
Low residual quantity of the agricultural chemicals on crops, it is friendly to crop, Environmental security, meet the development trend of current agricultural chemicals.
Embodiment
Technical scheme and technique effect are described further below in conjunction with specific embodiment, institute of the present invention
The percentage stated is weight percentage.
First, the preparation of Jia Betel extracts
The Jia Betel method for preparing extractive：Jia Betel rhizomes are cleaned, dries in the shade, is crushed with pulverizer, 60 mesh sieves is crossed, obtains powder
Mince；According to weight than adding 10 times of 95% ethanol of amount in gained crushed material, after soaking at room temperature 10d, with filtered on buchner funnel,
Filtrate is collected, is extracted 2 times with method, merges all filtrates；Then filtrate is concentrated under reduced pressure into Rotary Evaporators at 55 DEG C relative
Density is 1.20 paste；The weight 100-200 mesh column chromatography silica gels such as addition mix powder in paste, using dry method
Upper prop (filler of chromatographic column is the column chromatography silica gel of 200-300 mesh), is eluted by solvent of petroleum ether, by the elution of collection
Dried again in 45 DEG C of electric heating constant-temperature blowing drying boxes after liquid is concentrated, produce Jia Betel extracts.
2nd, Toxicity Determination
Subjects：Colletotrichum capsici (Colletotrichum capsici).
Test method：With reference to《People's Republic of China (PRC) agricultural industry criteria NY/T 1156.2-2006》Mycelial growth rate
Method.After prerun determines the effective inhibition concentration scope of each medicament, each medicament is set at 5 dosage respectively by active constituent content
Reason, if clear water compares.By pathogen PDA culture medium culture, when bacterium colony just covers with culture dish, with diameter 5mm card punch
Fungus block is broken into colony edge, fungus block is moved to the toxic PDA culture medium center being configured in advance with transfer needle, is subsequently placed in 25
Cultivated in DEG C incubator, often processing is repeated 4 times.Each processing colony diameter is measured using crossing method after 72h, calculates each processing
Net growth, mycelial growth inhibition rate.
Mycelial growth inhibition rate is converted into probit value (y), liquor strength (μ g/mL) is converted into logarithm value (x), with minimum
Square law tries to achieve virulence regression equation (y=a+bx), and thus calculates the EC of every kind of medicament50Value.Simultaneously according to the abundant methods of Sun Yun
Co-toxicity coefficient method (CTC) evaluate the synergistic effect of pharmacy mix, i.e. CTC≤80, composition shows as antagonism, when 80
<CTC<120, composition shows as summation action, and when CTC >=120, composition shows as synergistic effect.The result of the test such as institute of table 1
Show.
The toxicity test analysis of results table of the Jia Betel extracts of table 1, bromothalonil and its compounding to pepper anthracnose
| Reagent agent | Proportioning | Regression equation (y=a+bx) | Coefficient correlation | EC50(μg/mL) | Co-toxicity coefficient |
| Jia Betel extracts (A) | / | Y=1.0282+1.4405x | 0.9959 | 571.66 | / |
| Bromothalonil (B) | / | Y=4.4225+2.1834x | 0.9892 | 1.84 | / |
| A：B | 12:1 | Y=2.6867+1.6923x | 0.9842 | 23.28 | 98.9 |
| A：B | 10:1 | Y=2.9793+1.7225x | 0.9875 | 14.90 | 131.5 |
| A：B | 8:1 | Y=3.0769+1.9035x | 0.9768 | 10.24 | 157.5 |
| A：B | 5:1 | Y=3.5676+1.8926x | 0.9902 | 5.71 | 190.1 |
| A：B | 1:1 | Y=4.2846+2.0526x | 0.9827 | 2.23 | 164.4 |
| A：B | 1:5 | Y=4.9427+2.2149x | 0.9897 | 1.06 | 208.0 |
| A：B | 1:8 | Y=4.8570+2.1474x | 0.9860 | 1.17 | 176.7 |
| A：B | 1:10 | Y=4.7717+1.8367x | 0.9894 | 1.33 | 152.0 |
| A：B | 1:15 | Y=4.7368+1.5814x | 0.9781 | 1.47 | 133.4 |
| A：B | 1:20 | Y=4.7511+1.8105x | 0.9890 | 1.37 | 140.9 |
| A：B | 1:25 | Y=4.6501+1.8272x | 0.9796 | 1.55 | 123.3 |
| A：B | 1:30 | Y=4.0145+2.0100x | 0.9965 | 3.09 | 61.5 |
The weight of , Jia Betel extracts and bromothalonil ratio is in 10-1 as shown in Table 1:Mixture is to pepper anthracnose in the range of 1-25
Bacterium shows obvious synergistic effect；Dang Jia Betel extracts are 1 with bromothalonil weight ratio:5、5:When 1, its co-toxicity coefficient difference
For 208.0,190.1；Dang Jia Betel extracts are 1 with bromothalonil weight ratio:When 30, it shows as antagonism；Dang Jia Betel are extracted
Thing is 12 with bromothalonil weight ratio:When 1, it shows as summation action.
3rd, embodiment is prepared
Embodiment 1：20% Jia Betel extract bromothalonils aqueous emulsion (1:1)
Jia Betel extracts (active ingredient) 10%, bromothalonil (active ingredient) 10%, Nongru-700 # (emulsifying agent) 12%, first
Benzene (solvent) 15%, triphenyl phosphite (stabilizer) 0.5%, polycarboxylate (dispersant) 4%, ethylene glycol (antifreezing agent) 2%,
Polyvinyl alcohol (thickener) 2%, silicone oil (defoamer) 0.2%, deionized water complement to 100%；By active ingredient, emulsifying agent,
Solvent, stabilizer mixed dissolution obtain oil phase, and dispersant, antifreezing agent, thickener, defoamer, deionized water are made into aqueous phase；Oil
Addition is incorporated into aqueous phase and is sufficiently mixed, and after high-shear emulsifying, that is, 20% Jia Betel extract bromothalonil aqueous emulsions is made.
Embodiment 2：26% Jia Betel extract bromothalonils suspending agent (1:25)
Jia Betel extracts (active ingredient) 1%, bromothalonil (active ingredient) 25%, AEO (dispersant)
4%th, Nekal BX (wetting agent) 4%, xanthans (thickener) 2%, ethylene glycol (antifreezing agent) 2%, C8-10 aliphatic alcohols chemical combination
Thing (defoamer) 0.2%, deionized water (solvent) complement to 100%；First other auxiliary agents are mixed, the shear-mixed in cutter
Uniformly, Jia Betel extracts and bromothalonil are then added, 3h is ground in ball crusher, you can 26% Jia Betel extract bromine bacterium are made
Nitrile suspending agent.
Embodiment 3：42% Jia Betel extract bromothalonils wettable powder (1:20)
Jia Betel extracts (active ingredient) 2%, bromothalonil (active ingredient) 40%, alkylnaphthalene sulfonate (dispersant) 3%,
Polycarboxylate (dispersant) 3%, neopelex (wetting agent) 5.5%, attapulgite (filler) complement to 100%；
Each component is well mixed, 42% Jia Betel extract bromothalonil wettable powders are made after pulverizer is pulverized and mixed.
Embodiment 4：36% Jia Betel extracts bromothalonil water dispersible granule (5:1)
Jia Betel extracts (active ingredient) 30%, bromothalonil (active ingredient) 6%, sodium lignin sulfonate (dispersant) 5%,
Spaonin powder (wetting agent) 5%, methylcellulose (binding agent) 2.5%, sodium carbonate (disintegrant) 2.5%, diatomite (filler) are mended
Enough to 100%；Each component is well mixed, after airslide disintegrating mill crushes, 30min is stirred, mediates, then add in fluid bed
It is granulated, is dried after being granulated well, sieves i.e. obtained 36% false Betel extracts bromothalonil water dispersible granule.
Embodiment 5：11% Jia Betel extract bromothalonils aqueous emulsion (10:1)
Jia Betel extracts (active ingredient) 10%, bromothalonil (active ingredient) 1%, agriculture breast 1601 (emulsifying agent) 5%, diformazan
Benzene (solvent) 10%, epoxidized soybean oil (stabilizer) 0.2%, alkyl benzene sulfonate calcium salt (dispersant) 3.5%, glycerine are (antifreeze
Agent) 1.5%, methylcellulose (thickener) 1.5%, silicone compound (defoamer) 0.1%, deionized water complement to
100%；Active ingredient, emulsifying agent, solvent, stabilizer mixed dissolution are obtained into oil phase, by dispersant, antifreezing agent, thickener, disappeared
Infusion, deionized water are made into aqueous phase；Oil phase adduction, which enters in aqueous phase, to be sufficiently mixed, and after high-shear emulsifying, that is, 11% Jia Betel is made
Extract bromothalonil aqueous emulsion.
Embodiment 6：33% Jia Betel extract bromothalonils suspending agent (1:10)
Jia Betel extracts (active ingredient) 3%, bromothalonil (active ingredient) 30%, NPE (dispersant)
5%th, lauryl sodium sulfate (wetting agent) 5%, Arabic gum (thickener) 2.5%, propane diols (antifreezing agent) 2.5%, C10-
20 saturated fat acids compounds (defoamer) 0.4%, deionized water (solvent) complement to 100%；First other auxiliary agents are mixed,
Shear-mixed is uniform in cutter, then adds Jia Betel extracts and bromothalonil, 3h is ground in ball crusher, you can is made
33% Jia Betel extract bromothalonil suspending agents.
Embodiment 7：30% Jia Betel extract bromothalonils wettable powder (1:5)
Jia Betel extracts (active ingredient) 5%, bromothalonil (active ingredient) 25%, naphthalene sulfonic acid-formaldehyde condensation product sodium salt (divide
Powder) 4.5%, spaonin powder (wetting agent) 4%, kaolin (filler) complement to 100%；Each component is well mixed, through powder
30% Jia Betel extract bromothalonil wettable powders are made after being pulverized and mixed in broken machine.
Embodiment 8：45% Jia Betel extracts bromothalonil water dispersible granule (1:8)
Jia Betel extracts (active ingredient) 5%, bromothalonil (active ingredient) 40%, polycarboxylate (dispersant) 5.5%, silkworm
Husky (wetting agent) 5.5%, polyvinyl alcohol (binding agent) 3%, ammonium carbonate (disintegrant) 3%, white carbon (filler) 10%, bentonite
(filler) complements to 100%；Each component is well mixed, after airslide disintegrating mill crushes, 30min is stirred, mediates, then add
It is granulated in fluid bed, is dried after being granulated well, sieves i.e. obtained 45% false Betel extracts bromothalonil water dispersible granule.
Comparative example 1：20% Jia Betel extract aqueous emulsions
Jia Betel extracts (active ingredient) 20%, Nongru-700 # (emulsifying agent) 12%, toluene (solvent) 15%, phosphorous acid three
Phenyl ester (stabilizer) 0.5%, polycarboxylate (dispersant) 4%, ethylene glycol (antifreezing agent) 2%, polyvinyl alcohol (thickener) 2%,
Silicone oil (defoamer) 0.2%, deionized water complement to 100%；Active ingredient, emulsifying agent, solvent, stabilizer mixed dissolution are obtained
To oil phase, dispersant, antifreezing agent, thickener, defoamer, deionized water are made into aqueous phase；Oil phase adduction enters fully mixed in aqueous phase
Close, after high-shear emulsifying, that is, 20% Jia Betel extract aqueous emulsions are made.
Comparative example 2：30% bromothalonil wettable powder
Bromothalonil (active ingredient) 30%, naphthalene sulfonic acid-formaldehyde condensation product sodium salt (dispersant) 4.5%, spaonin powder (moistening
Agent) 4%, kaolin (filler) complement to 100%；Each component is well mixed, 30% bromine is made after pulverizer is pulverized and mixed
Bacterium nitrile wettable powder.
4th, field medicine effect test
Test 1. the implementation of Formulation Example and be applied to preventing and treating pepper anthracnose field control effectiveness test
Test method：According to《Pesticide field efficacy medicine test criterion (one) GB/T17980.33-2000 bactericidal agent for preventing and treating capsicums
Anthracnose》Field control effectiveness test is carried out, this test arrangement is in Nanning suburbs.Experiment sets 7 processing altogether, often handles 4 weights
It is multiple, per plot area 25m2, random district's groups arrangement.Using spray pesticide, spraying is uniformly thoughtful, using clear water as blank control, uses
Amount of liquid medicine is 675L/hm2.First time dispenser at the initial stage of a disease, second of dispenser after 7 days, common dispenser is twice.
Investigation method：Before dispenser, 7 days after second of dispenser, each cell is investigated within 14 days, per cell 50 fruits of random searching
Real, the percentage that whole fruit area is accounted for lesion area is classified.Record disease fruit number at different levels and sick series, calculate disease index and
Prevention effect.
Grade scale is as follows：
0 grade：Disease-free spot；
1 grade：Lesion area accounts for fruit area below 2%；
3 grades：Lesion area accounts for fruit area 3%~8%；
5 grades：Lesion area accounts for fruit area 9%~15%；
7 grades：Lesion area accounts for fruit area 16%~25%；
9 grades：Lesion area accounts for fruit area more than 25%.
Disease index and prevention effect computational methods：
Disease index calculation formula：
In formula：X --- disease index；Ni--- disease fruit (leaf) numbers at different levels；I --- with respect to value of series；N --- investigate total fruit
(leaf) number.
Prevention effect formula：
In formula：P --- prevention effect, unit are percentage (%)；CK0--- disease index before blank district dispenser；
CK1--- disease index after blank district dispenser；PT0--- disease index before chemicals treatment district dispenser；PT1--- at medicament
Disease index after reason area's dispenser.
The Jia Betel extracts of table 2, bromothalonil and its compounding preventing and treating pepper anthracnose field control effectiveness test result
Test 2. the implementation of Formulation Example and be applied to preventing and treating cucumber anthracnose field control effectiveness test
Test method：This experimental arrangement carries out field control effectiveness test in Guangxi Guigang.Experiment sets 7 processing altogether, often locates
4 repetitions are managed, per plot area 35m2, random district's groups arrangement.Using spray pesticide, using clear water as blank control, amount of liquid medicine is used
For 675L/hm2.In disease early period of origination first time dispenser, second of dispenser after 7 days, common dispenser is twice.
Investigation method：Before dispenser, 7 days after second of dispenser, each cell is investigated within 14 days, per the 5 points of samplings of cell diagonal,
Every is investigated 3 plants, and every plant is investigated 10 leaves from top to bottom, and the percentage that whole leaf area is accounted for by scab on blade is classified, record
The sick number of sheets at different levels and sick series, calculate disease index and prevention effect.
Grade scale：
0 grade：Disease-free spot；
1 grade：Scab accounts for less than the 5% of whole leaf area；
3 grades：Scab accounts for the 6-10% of whole leaf area；
5 grades：Scab accounts for the 11-25% of whole leaf area；
7 grades：Scab accounts for the 26-50% of whole leaf area；
9 grades：Scab accounts for more than the 50% of whole leaf area.
Disease index and prevention effect calculation formula are the same as experiment 1.
The Jia Betel extracts of table 3, bromothalonil and its compounding preventing and treating cucumber anthracnose field control effectiveness test result
Can effectively it be prevented and treated by the bactericidal composition of upper table 2, the results showed that Jia Betel extracts of table 3 and bromothalonil compounded
Capsicum, cucumber anthracnose, lasting period length, prevention effect better than the preventive effect of alone Jia Betel extracts and bromothalonil, reduce preventing and treating into
This.Both mixtures can delay the drug-fast generation of germ simultaneously, improve prevention effect.Bactericidal composition of the present invention is to trial crops
Without obvious harmful effect, security is good, meets the security requirement of pesticidal preparations.
Claims (5)
1. the bactericidal composition containing bromothalonil, it is characterised in that active ingredient is made up of false Betel extracts and bromothalonil, and false Betel is carried
It is 10-1 to take the weight of thing and bromothalonil ratio:1-25.
2. bactericidal composition according to claim 1, it is characterised in that the weight of Jia Betel extracts and bromothalonil ratio is 1:
5、5:1。
3. bactericidal composition according to claim 1 or 2, it is characterised in that described active ingredient accounts for bactericidal composition
The 1-70% of gross weight, surplus are acceptable auxiliary element on agricultural chemicals.
4. bactericidal composition according to claim 3, it is characterised in that described bactericidal composition is prepared into wettable powder
Agent, water dispersible granules, suspending agent or aqueous emulsion.
5. bactericidal composition according to claim 1 is in preventing and treating cucumber anthracnose, pepper anthracnose and mandarin tree anthracnose
On purposes.
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