CN105340931A - Sterilization and bacteriostasis composition for preventing and treating grape powdery mildew and its preparation and use - Google Patents
Sterilization and bacteriostasis composition for preventing and treating grape powdery mildew and its preparation and use Download PDFInfo
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- CN105340931A CN105340931A CN201510736697.3A CN201510736697A CN105340931A CN 105340931 A CN105340931 A CN 105340931A CN 201510736697 A CN201510736697 A CN 201510736697A CN 105340931 A CN105340931 A CN 105340931A
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- bactericidal
- pesticide
- composition pesticide
- difenoconazole
- powdery mildew
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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
- A01N47/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid
- A01N47/08—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid the carbon atom having one or more single bonds to nitrogen atoms
- A01N47/10—Carbamic acid derivatives, i.e. containing the group —O—CO—N<; Thio analogues thereof
- A01N47/26—Oxidation products of dithiocarbamic acid derivatives, e.g. thiuram sulfides
-
- 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
- A01N43/64—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with three nitrogen atoms as the only ring hetero atoms
- A01N43/647—Triazoles; Hydrogenated triazoles
- A01N43/653—1,2,4-Triazoles; Hydrogenated 1,2,4-triazoles
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- Life Sciences & Earth Sciences (AREA)
- Agronomy & Crop Science (AREA)
- Pest Control & Pesticides (AREA)
- Plant Pathology (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Dentistry (AREA)
- General Health & Medical Sciences (AREA)
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- Environmental Sciences (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
The invention discloses a sterilization and bacteriostasis composition for preventing and treating grape powdery mildew. The sterilization and bacteriostasis composition comprises difenoconazole and thiram according to a weight ratio of 1: 2-4. Difenoconazole and thiram are compounded and produce obvious synergism.
Description
Technical field
The invention belongs to technical field of pesticide, relate to a kind of prevent and treat grape powdery mildew bactericidal composition and preparation and application.
Background technology
Grape powdery mildew (GrapePowderyMildew) is a kind of Common Diseases on grape, and its cause of disease is grape powdery mildew bacterium [ErysiphernecatorSchw].Grape powdery mildew bacterium [ErysiphernecatorSchw] belongs to Ascomycota, gang pyrenomycetes, Erysiphales, Erysiphaceae, Erysiphe (GadouryDM, CadleDL, WilcoxWF, etal.Grapevinepowderymildew (Erysiphenecator): afascinatingsystemforthestudyofthebiology, ecologyandepidemiologyofanobligatebiotroph.MolecularPlan tPathology, 2012,13 (1): 1-16.).Grape powdery mildew bacterium is mainly caused harm the blade of grape, the position such as branch and fruit, cause the problem (GadouryDM such as vintage declines, tree vigo(u)r weakens, fruit quality reduction, SeemRC, PearsonRC, etal.Effectsofpowderymildewonvinegrowth, yield, andqualityofconcordgrapes.PlantDisease, 2001,85:137-140.).For a long time, chemical control is the major measure (Liu Huining controlling grape powdery mildew evil, the occurrence and control of grape powdery mildew, north fruit tree, 1999,2:25-26.), produce at present and above use the medicaments such as thiophanate methyl, Difenoconazole, lime sulfur more, and achieve good control efficiency.
Difenoconazole, chemical name is suitable, the chloro-4-of trans-3-[4-methyl-2-1H-1, 2, 4-triazol-1-yl methyl)-1, the mute pentane of 3-bis--2-base) phenyl 4-chlorphenyl ether is (suitable, inverse proportion is about 45:55), belong to triazole bactericidal agent, it is sterol demethylation inhibitors, there is good interior absorption energy, have protection and therapeutic action concurrently, to tail spore bacterium, powdery mildew, thorn dish spore, the fungies such as septoria musiva all have good control efficiency, shortcoming is that Difenoconazole action site is single, easily there is pesticide resistance in long-term use continuously, to be used alternatingly with protectiveness medicament, to increase the service life.
Tmtd, chemical name tetramethyl thiuram disulfide is a kind of good fortune U.S.A with broad spectrum protection is bactericide.Its has a broad antifungal spectrum, better to effects such as phytophthora, black star germ, sclerotium bacteria, rhizopus, smut.Because it has low toxicity, wide spectrum, the feature such as efficient, by can improve drug effect with the science of suitable medicament is composite and delays the drug-fast generation of pathogen.
Summary of the invention
The object of this invention is to provide a kind of bactericidal composition, after said composition is composite, there is obvious synergistic function.
Based on foregoing invention object, bactericidal composition pesticide of the present invention, wherein, active ingredient is made up of Difenoconazole and tmtd.
In the present invention's preferred technical scheme, the weight ratio of Difenoconazole and tmtd is 1:2 ~ 4.
Preferably, the weight ratio of Difenoconazole and tmtd is 1:2.
Described Difenoconazole, chemical name is suitable, the chloro-4-of trans-3-[4-methyl-2-1H-1,2,4-triazol-1-yl methyl)-1,3-bis-mute pentane-2-base) phenyl 4-chlorphenyl ether (suitable, inverse proportion is 45:55).
Described tmtd, its chemical name is tetramethyl thiuram disulfide.
Wherein, described bactericidal composition pesticide is the composition pesticide of the bactericidal effect for fungi.
Preferably, described bactericidal composition pesticide is the composition pesticide of the bactericidal effect for grape powdery mildew bacterium.
Another object of the present invention is to provide a kind of bactericidal pesticidal preparations, comprises above-mentioned bactericidal composition pesticide.
In a technical scheme of the present invention, wherein, described bactericidal composition pesticide accounts for the weight percentage of described bactericidal pesticidal preparations is 1%-60%; All the other are allow in agricultural chemicals to use and acceptable auxiliary material.
In another technical scheme of the present invention, described bactericidal pesticidal preparations is wetting powder, water dispersible granules or aqueous suspension agent; Its auxiliary material comprises dispersant, wetting agent, bleeding agent, thickener, packing agent etc., and to contribute to active ingredient stable and play the known substance of drug effect in the formulation, are all various compositions that are conventional in pesticidal preparations preparation or permission use, concrete composition and consumption are determined by experiment according to recipe requirements.
In another technical scheme of the present invention, described bactericidal pesticidal preparations is by following 1)-3) in the component of percentage by weight described in any one form:
1) wetting powder is made up of the component of following weight percentage:
2) water dispersible granules is made up of the component of following weight percentage:
3) aqueous suspension agent is made up of the component of following weight percentage:
Wherein, 1) ,-3) in item, the percentage by weight of described bactericidal composition pesticide is preferably 10%-60%, and most preferably 20-60%, most preferably is 30% especially.
Described bactericidal composition pesticide or the application of described bactericidal pesticidal preparations in control fungal diseases of plants also belong to protection scope of the present invention; Wherein, described fungal diseases of plants is preferably grape powdery mildew.
The present invention is different with the mechanism of action of tmtd according to Difenoconazole, and it is compositely reduced dosage, and tool can significantly improve control efficiency compared with single dose, delays or reduces the drug-fast emergence and development of germ.
Compared with present technology, the present invention has the following advantages:
1, indoor biometrics result shows, composite have obvious synergistic function, is used alone the control efficiency that improve grape powdery mildew compared with single dose.
2, two kinds of active ingredients composite after, decrease using dosage, alleviate the pollution to environment.
3, the mechanism of action of two kinds of active ingredients is different, delays the drug-fast emergence and development of pathogen after composite.
Embodiment
For a better understanding of the present invention, below in conjunction with specific embodiment, the present invention is described further.
Material used in following embodiment, reagent, if no special instructions, all can obtain from commercial channels.
The Toxicity Determination test medicine of microbicide compositions to grape powdery mildew bacterium of embodiment 1, Difenoconazole and tmtd adopts 95% difenoconazole technical material and the former medicine of 95% tmtd, the concentration gradient needed for mixed diluting one-tenth is carried out according to the liquid ratio shown in table 1, be 500,100,50,10,5 μ g/ml respectively, inoculation bacterial classification is grape powdery mildew bacterium fresh in vineyard.
Test method is carried out (Deng Lijun, Liao Xinfu, Wang Huilin etc., melon powdery mildew Isolated leaf inoculation technique study, Chinese melon dish, 2015,28 (3): 18-21.) with reference to the method for Deng Lijun.Medicament is made into 6-8 concentration on the basis of trial test, and each concentration repeats 4 times, and establishes blank contrast.Choose susceptible variety grape (summer is black) the 3-6 sheet leaf that slightly point is following, leave the petiole that 0.5cm is long, cut sth. askew with scissors, tap water 2 times, then the alcohol immersion 10S of 75% is used, rinse with distilled water again and wash 2 times, be placed in the clorox soaking disinfection 3min of 5%, then use aseptic water washing 3 times.At superclean bench blade is placed in the culture dish being covered with sterilized filter paper, after water blots, petiole inserted and is equipped with in the double layer culture dish device of sterile water.Being sprayed onto uniformly on grape leave by liquid (liquid of proportioning shown in table 1) with hedgehog hydnum sprayer, is that moisture film shape is as the criterion with leaf surface.The Powdery Mildew spore sterile water infected on the grape leave of powdery mildew is mixed with 1 × 10 after doing by liquid
5the spore suspension of individual/mL, gets 20 μ L bacterium liquid with liquid-transfering gun and is inoculated in face of blade uniformly, and put into 22 DEG C, relative moisture 70%, intensity of illumination be 2000Lx, periodicity of illumination is cultivate 7 days in the incubator of 10-14 hour/day.5-7 days " Invest, Then Investigate " incidences, calculate preventive effect.Sick leaf grade scale reference grade scale is see People's Republic of China's agricultural industry criteria pesticide field efficacy medicine test criterion: NY/T1464.12-2007.
Carry out statistical analysis with DPS statistical analysis software, calculate the EC of each medicament
50, and the co-toxicity coefficient (CTC) of mixture is calculated according to the abundant method of Sun Yun.
Actual measurement toxicity index (ATI)=(standard agent EC
50/ reagent agent EC
50) × 100
In theoretical toxicity index (TTI)=A medicament toxicity index × mixture A percentage composition+B medicament toxicity index × mixture in the percentage composition of B
Co-toxicity coefficient (CTC)=ATI/TTI × 100
According to the criteria for classifying of co-toxicity coefficient (CTC), CTC < 80 is antagonism, and 80 < CTC < 120 are summation action, and CTC > 120 is synergistic effect.
Table 1 Difenoconazole and tmtd and built agent thereof are to the toxicity test of grape powdery mildew
As can be seen from Table 1, Difenoconazole and tmtd composite in the scope of 1:2-4 time, co-toxicity coefficient is all greater than 120, shows obvious synergistic effect to grape powdery mildew.Especially Difenoconazole and tmtd are when 1:2, and synergistic effect is the most obvious.
Embodiment 230% Difenoconazole thiram wettable powder control grape powdery mildew field trial
1, formula and FORMULATION PROCESS EXAMPLES
1.1 wetting powders: Difenoconazole 10%, tmtd 20%, dodecyl sodium sulfate 1%, sodium lignin sulfonate 4%, pulls open powder 4%, diatomite complements to 100%, by the known technique mixing of this area general technology technical staff, pulverize with airslide disintegrating mill after premixed, fineness requirement 90% is by 325 mesh sieves, suspensibility is greater than 75%, prepares 30% Difenoconazole thiram wettable powder.
1.2 water dispersible granules: Difenoconazole 10%; tmtd 20%; dodecyl sodium sulfate 2%, sodium lignin sulfonate 4%, pulls open powder 4%; Macrogol 6000 2%; potassium chloride complements to 100%, by the known technique mixing of this area general technology technical staff, pulverizes after premixed with airslide disintegrating mill; extruded type granulator granulation, dries.Particle 0.5-2.5mm, suspensibility is greater than 75%, and disintegration time is less than 2 minutes, prepares 30% Difenoconazole tmtd water dispersible granules.
1.3 aqueous suspension agents: Difenoconazole 10%, tmtd 20%, OP-103%, sodium lignin sulfonate 4%, xanthans 0.02%, carclazyte (silicon magnesium acid aluminium) 3%, ethylene glycol 5%; Polymethyl siloxane 0.03%, surplus is that water is mended to 100%; By the known technique mixing of this area general technology technical staff, after premixed, sand mill is ground to qualified rear packaging.The granula of more than 90% is less than 5 μm, and suspensibility is greater than 90%.Prepare 30% Difenoconazole tmtd aqueous suspension agent.2, the field efficacy demonstration test of the present composition is carried out on the summer black grape of Tian Pu villa garden, Miyun Region of Beijing, and the cultivation management of each experimental plot is consistent.Planting type is greenhouse culture, and planting density is about 300 plants/acre.Adopt the dispenser of cauline leaf spray method, the 8th day investigation disease index after medication.10 young sprouts are investigated in every community, every tip is instituted an inquiry from the 5th leaf from top to bottom, investigation 5-10 sheet leaf, the percentage that every sheet leaf accounts for one-piece blade area by lesion area carries out classification, and grade scale is see People's Republic of China's agricultural industry criteria pesticide field efficacy medicine test criterion: NY/T1464.12-2007.After medicine, 8d investigates disease index respectively, calculates control efficiency.
Table 2 Difenoconazole thiram wettable powder control grape powdery mildew result of the test
As can be seen from Table 2,30% Difenoconazole thiram wettable powder, Difenoconazole tmtd water dispersible granules and Difenoconazole tmtd aqueous suspension agent two working concentrations are in the field control effectiveness test of control grape powdery mildew, and preventive effect is apparently higher than the preventive effect of 50% thiram wettable powder and 10% difenoconazole water dispersible granule.
In sum, the present invention adopts Difenoconazole tmtd complex composition, compared with existing unitary agent, significantly improves preventive effect, also can reduce the drug-fast generation of grape powdery mildew bacterium, is worth applying aborning.
Claims (10)
1. a bactericidal composition pesticide, is characterized in that: active ingredient is made up of Difenoconazole and tmtd.
2. bactericidal composition pesticide according to claim 1, is characterized in that: the weight ratio of Difenoconazole and tmtd is 1:2 ~ 4.
3. bactericidal composition pesticide according to claim 2, is characterized in that: the weight ratio of Difenoconazole and tmtd is 1:2.
4. according to the bactericidal composition pesticide in claim 1-3 described in any one, it is characterized in that: described bactericidal composition pesticide is the composition pesticide of the bactericidal effect for fungi.
5. according to the bactericidal composition pesticide in claim 1-3 described in any one, it is characterized in that: described bactericidal composition pesticide is the composition pesticide of the bactericidal effect for grape powdery mildew bacterium.
6. a bactericidal pesticidal preparations, comprises the bactericidal composition pesticide in claim 1-5 described in any one.
7. bactericidal pesticidal preparations according to claim 6, is characterized in that: also comprise the auxiliary material for pesticidal preparations; Wherein, the weight percentage that the bactericidal composition pesticide in claim 1-5 described in any one accounts for described bactericidal pesticidal preparations is 1%-60%.
8. bactericidal pesticidal preparations according to claim 7, is characterized in that: described bactericidal pesticidal preparations is bactericidal pesticide wettable, bactericidal pesticide water dispersible granules or bactericidal pesticide suspension concentrate.
9. bactericidal pesticidal preparations according to claim 8, is characterized in that: bactericidal pesticidal preparations is for by following 1)-3) in the component of percentage by weight described in any one form:
1) bactericidal pesticide wettable is made up of the component of following weight percentage:
Surplus is diatomite;
2) bactericidal pesticide water dispersible granules is made up of the component of following weight percentage:
Surplus is potassium chloride;
Or, 3) bactericidal pesticide suspension concentrate is made up of the component of following weight percentage:
Surplus is water;
Wherein, 1) ,-3) in item, the percentage by weight of the bactericidal composition pesticide in claim 1-5 described in any one is preferably 20-60%, most preferably is 30%.
10. the application of the bactericidal pesticidal preparations in the bactericidal composition pesticide in claim 1-5 described in any one or claim 6-9 described in any one in control fungal diseases of plants; Described fungal diseases of plants is preferably grape powdery mildew.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3986133A4 (en) * | 2019-06-24 | 2023-06-28 | UPL Limited | Synergistic fungicide composition |
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| EP3986133A4 (en) * | 2019-06-24 | 2023-06-28 | UPL Limited | Synergistic fungicide composition |
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