CN109329281A - A kind of microbicide compositions containing Physcion and tetramycin - Google Patents

Abstract

The present invention provides a kind of microbicide compositions, the composition includes two kinds of active ingredient emodin methyl ethers and tetramycin, and the weight ratio between two components is 30~1:1~30.The present invention also provides the Preparation method and uses of the composition.Test result shows that above-mentioned bactericidal composition synergy provided by the invention is obvious, it is often more important that amount of application is reduced, and use cost reduces.The bactericidal composition can effectively prevent certain specific bacteriums or the fungal disease of crop.By compounding the fungicide of different role mechanism and the mode of action, there is good effect for expand fungicidal spectrum and delay germ resistance and improve control efficiency etc..

Description

A kind of microbicide compositions containing Physcion and tetramycin

Technical field

The invention belongs to agriculture plant protection field, more particularly to a kind of with the microbicide compositions for improving performance, Concretely relate to a kind of microbicide compositions comprising Physcion and tetramycin.

Background technique

Physcion (Physcion) belongs to anthraquinone analog compound.Physcion is highly active vegetable source bactericide, Using natural plants rheum officinale as raw material, its active constituent is extracted meticulously, and processing develops, to powdery mildew, downy mildew, grey mold Disease, anthracnose etc. have good control efficiency.It is environmentally friendly to people and animals' low toxicity, it is raw particularly suitable for green and organic vegetable It produces.Physcion is protective fungicide, and induction crop generates defense reaction, inhibits pathogen spore germination, the life of mycelia Long, haustorium formation, so that crop achievees the effect that diseases prevention from the infringement of pathogen.

Tetramycin (Tetramycin) antibiotic containing there are many, wherein macrolide tetraene antibiotic, prevents and treats bacteriosis； Peptide pyrimidine nucleoside acids antibiotic prevents and treats fungal disease；Nitrogen-containing heterocycle aromatic derivant antibiotic improves crop and masterpiece is immunized With when crop cauline leaf is overtaken by a storm, friction causes wound and germ to enter important channel, tetramycin tool mutually There is interior suction bacteriostatic activity, germ is prevented to invade and extend.It is formed in medicament fermentation production process and a variety of is absorbed by crops utilization Nutrient, have and promote crop plant tissue by post-traumatic healing regeneration function, enhance the photosynthesis of plant, improve and produce Amount.It can be obviously promoted callus healing simultaneously, promote weak seedling well developed root system, the recovery of aging root system, improve crop disease-resistant ability With optimization crop quality.Tetramycin is applicable in the prevention and treatment of a variety of fungies, bacteriosis of various crops.Especially to fruit tree putrefaction disease spot Point defoliation；Rice blast；Root rot；Cucurbits fusarium wilt；Cotton verticillium wilt；Jujube tree rust；Fruit white rot of grape；Panax pseudoginseng Black spot；Tealeaves gall of tea, the fungal diseases special efficacys such as forest rot disease, canker, bleeding disease, defoliation, woods seedling blight.

Actual pesticide experience have shown that, repeat and single-minded apply a kind of reactive compound and carry out controlling disease in many feelings It will lead to the fast selective of the bacterial strain of disease under condition, for the risk for reducing resistance disease bacterial strain selectivity, usually make at present With the mixture of different activities compound come controlling disease.Group is carried out by the reactive compound that will there is different role mechanism Close, can delaying drug resistance generate, reduce amount of application, reduce control cost.

Summary of the invention

The purpose of the present invention is being directed to fungicide resistance and pedo relict problem in practical applications, filters out difference and kill The fungicide of bacterium principle is compounded, and a kind of new microbicide compositions is obtained, to improve bactericidal agent for preventing and treating effect, delaying drug resistance It generates, reduces amount of application, reduce control cost.

It is a further object to provide include two kinds of active ingredient emodin methyl ethers and tetramycin antimicrobial combination The preparation method of object and the application in agriculture field prevention and treatment corps diseases.

The purpose of the present invention can be achieved by the following measures:

Inventor is found by experiment that composition of the invention is for preventing and treating crops bacterium or fungal disease prevention and treatment Synergy is obvious, it is often more important that amount of application is reduced, and reduces use cost.Compound structure containing Physcion and tetramycin Type is different, and mechanism of action is different, and the two compounding can expand fungicidal spectrum, and can delay pathogen anti-to a certain extent The generation of property and development speed, and no interactions resistance between Physcion and tetramycin.

The weight ratio of active component Physcion and active component tetramycin is 30~1:1~30, in a kind of preferred side In case, the weight ratio of active component Physcion and active component tetramycin is 20~1:1~20.

In a kind of preferred scheme, the weight ratio between two component of Physcion and tetramycin can be arbitrarily following Be adjusted in the range of proportion 30:1,29:1,28:1,27:1,26:1,25:1,24:1,23:1,22:1,21:1,20:1, 19:1、18:1、17:1、16:1、15:1、14:1、13:1、12:1、11:1、10:1、9:1、8:1、7:1、6:1、5:1、4:1、3: 1、2:1、1:1、1:2、1:3、1:4、1:5、1:6、1:7、1:8、1:9、1:10、1:11、1:12、1:13、1:14、1:15、1:16、 1:17,1:18,1:19,1:20,1:21,1:22,1:23,1:24,1:25,1:26,1:27,1:28,1:29,1:30, can also be with It is selected in range composed by being matched at any of the above two, these ratios can be understood as weight ratio, also may include Molar ratio.

The dosage form allowed on pesticide can be made by active constituent and insecticides adjuvant or auxiliary material in composition of the invention.Into one Step, the composition forms agriculture by the active component of 1~85% parts by weight and the insecticides adjuvant of 99~15% parts by weight or auxiliary material The dosage form allowed on medicine.

The present invention provides the microbicide compositions comprising Physcion and tetramycin to prevent and treat crops in agriculture field Purposes in terms of disease, the especially purposes in terms of the fungi or bacteriosis for preventing and treating certain crops.

Above-mentioned composition specifically may include insecticides adjuvant or auxiliary material, such as carrier, solvent, dispersing agent, wetting agent, gluing One or more of agent, thickener, adhesive, surfactant or fertilizer etc..It can be mixed during application common Auxiliary agent.

Suitable auxiliary agent or auxiliary material can be solid or liquid, they are usually common substance during formulation, Such as natural or regenerated minerals, solvent, dispersing agent, wetting agent, adhesive, thickener, adhesive.

The method of administration of the present composition includes the aerial part that composition of the invention is used for plant growth, especially It is leaf portion or blade face.It can choose seed soaking or be applied to controlling object surface.The frequency and amount of application of application depend on pathogen Biology and weather life condition.The growth place of plant, such as rice field can be soaked with the liquid preparation of composition, or Composition is applied in soil by person in solid form, and such as in granular form (soil application), composition can be by soil through planting Object root enters in plant (systemic action).

Composition of the invention can be prepared into various dosage forms pesticide-acceptable, including but not limited to missible oil, suspension Agent, wettable powder, water dispersible granules, pulvis, granula, aqua, aqueous emulsion, microemulsion, encapsulated form, mother liquor, female powder etc., In a kind of preferred embodiment, dosage form of the invention uses suspending agent, aqua, microemulsion.According to the property of these compositions and apply With composition purpose to be achieved and ambient conditions, it can choose and pour composition to be sprayed, atomizing, dust, broadcast sowing or sprinkle Or the like method application.

Composition of the invention can be prepared into various dosage forms by known method, can by effective component with help Agent can uniformly mix together with surfactant when needing, grind, be prepared into required agent such as solvent, solid carrier Type.

Above-mentioned solvent can be selected from aromatic hydrocarbon, preferably contain 8-12 carbon atom, such as xylene mixture or substituted benzene, phthalein Esters of gallic acid, such as two octanoic acid of Dibutyl phthalate or phthalandione, fat hydrocarbon, such as thiacyclohexane or paraffin, the ether of pure and mild ethylene glycol and they And ester, such as ethyl alcohol, ethylene glycol, ethylene glycol monomethyl；Ketone, such as cyclohexanone, highly polar solvent, such as N- methyl -2- pyrrolidines Ketone, dimethyl sulfoxide or dimethylformamide and vegetable oil or vegetable oil, such as soybean oil.

Above-mentioned solid carrier, such as usually natural mineral fillers, such as talcum, kaolinite for pulvis and dispersible agent Soil, montmorillonite or atlapulgite.In order to manage the physical property of composition, polymolecularity silicic acid or polymolecularity can also be added Adsorpting polymerization object carrier, such as granulated adsorptive carriers or non-adsorbed carrier, suitable granulated adsorptive carriers are porous types, it is such as floating Stone, bentonite or bentonite；Suitable non-adsorbed carrier such as calcite or sand.Further, it is possible to use a large amount of inorganic in nature or having The prefabricated material to granulate of machine property is as carrier, especially dolomite.

The chemical property of effective component in composition according to the present invention, suitable surfactant are sulfomethylated lignin Acid, naphthalene sulfonic acids, phenolsulfonic acid, alkali salt or amine salt, alkylaryl sulfonates, alkyl sulfate, alkylsulfonate, fat Alcohol sulfate, fatty acid and sulphated fatty alcohol glycol ether, there are also the condensation product of sulfonated naphthalene and naphthalene derivatives and formaldehyde, naphthalene or The condensation product of naphthalene sulfonic acids and phenol and formaldehyde, NONIN HS 240, ethoxylated isooctyl-phenol, octyl phenol, nonyl phenol, Alkylaryl polyglycol ether, tributyl benzene polyglycol ether, three stearyl phenyl polyglycol ethers, alkyl aryl polyether alcohol, Ethoxylated castor oil, polyoxyethylene alkyl ether, ethylene oxide condensation product, ethoxylation polyoxypropylene, laurel acid polyethylene glycol Ether acetal, sorbitol ester, lignin sulfite waste liquor and methylcellulose.

Two kinds of effective components show as synergistic effect in composition of the invention, and the activity of the composition is than using individualized The independent activity of the expected summation of activity and single compound of closing object is more significant.Synergistic effect shows as allowing amount of application Reduce, broader sterilization control spectrum, quick, more longlasting control efficiency, by a small number of applying only once or several times more preferably Control plant pest germ and broaden the possible administration interval time.These characteristics are that phytopathogen control was practiced It is especially needed in journey.

In terms of microbicide compositions of the invention can be applied to agriculture field prevention and treatment corps diseases, farming referred herein Object disease especially uncinula necator, powdery mildew of cucumber, cucumber downy mildew, balsam pear powdery mildew, graw mold of tomato, wheat white powder Disease, rice blast.But composition of the invention is other than it can prevent and treat aforementioned disease, moreover it is possible to the specific illness of prevention and treatment include but It is not limited to wheat diseases (such as: wheat scab, wheat powdery mildew, wheat rust), rice disease (such as: rice sheath blight disease, water Rice false smut, paddy bacterial streak etc.), maize diseases (such as: smut of maize, the leaf blight of corn, corn southern leaf blight), cucumber Disease (such as: powdery mildew of cucumber, cucumber anthracnose, gray mold of cucumber, cucumber bacterial angular leaf spot), tomato disease are (such as: tomato Powdery mildew, anthracnose of tomato, tomato virus disease, tomato bacterial angular leaf spot etc.), grape disease (such as: downy mildew of garpe, grape Gray mold), apple disease (such as: ring rot of apple, apple anthracnose), citrus disease (such as: citrus scab simultaneously, citrus anthrax Disease), tobacco diseases (such as: wildfire, Alternaria alternate), rape disease (such as: sclerotinia sclerotiorum), cotton disease (such as: cotton Flower verticillium wilt, cotton wilt) etc..

Other features that bactericidal composition of the invention is shown are main are as follows: 1, composition mixture of the invention have it is obvious Synergistic effect；2, since two single dose chemical structures of this composition are widely different, the mechanism of action is entirely different, and there is no hand over Mutual resistance can delay two single doses that generated resistance problem is used alone；3, composition of the invention is to crop safety, preventive effect It is good.Tests prove that microbicide compositions chemical property of the present invention is stablized, synergy is significant, shows significantly to controlling object Synergy and complementation.

Specific embodiment

In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to embodiments, to the present invention It is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, is not used to limit The fixed present invention, any modifications, equivalent replacements and improvementsmade within the spirit and principles of the invention, etc. should be included in Within protection scope of the present invention.

Percentage is weight percentage in all formulas of following embodiment.The processing work of the various preparations of the present composition Skill is the prior art, can be varied according to different situations.

One, dosage form prepares embodiment

(1) processing and embodiment of aqua

By Physcion and tetramycin, it is mixed according to the formula uniformly with each components such as surfactant and water to obtain the final product Finished product.

Embodiment 1:3.1% Physcion tetramycin aqua

Physcion 3%, tetramycin 0.1%, alkyl sulfate 3%, alkylaryl polyglycol ether 4%, water is supplied To 100%.

Embodiment 2:2.4% Physcion tetramycin aqua

Physcion 2%, tetramycin 0.4%, sulphated fatty alcohol glycol ether 4%, ethoxylated castor oil 2%, Water complements to 100%.

Embodiment 3:14.7% Physcion tetramycin aqua

Physcion 0.7%, tetramycin 14%, three stearyl phenyl polyglycol ethers 5%, lauric acid polyglycol ether Acetal 6%, water complements to 100%.

(2) processing and embodiment of microemulsion

Physcion and tetramycin, solvent are mixed to form uniform liquid in proportion, add auxiliary agent and water, is stirred Uniformly, it can be prepared by microemulsion.

Embodiment 4:5.5% Physcion tetramycin microemulsion

Physcion 5%, tetramycin 0.5%, formaldehyde condensate sulfonate 4%, potassium dihydrogen phosphate 2%, propylene glycol 10%, cyclohexanone 15%, water complements to 100%.

Embodiment 5:8% Physcion tetramycin microemulsion

Physcion 4%, tetramycin 4%, polymerization of carboxylic acid sodium salt 5%, 2,6- toluene di-tert-butyl phenols 2.8%, third Triol 18%, water complements to 100%.

Embodiment 6:11% Physcion tetramycin microemulsion

Physcion 1%, tetramycin 10%, alkylphenol-polyethenoxy formaldehyde condensation products sulfate 8%, phosphorous triphenyl phosphate Ester 3%, soybean oil 15%, propylene glycol 10%, water complements to 100%.

(3) processing and embodiment of suspending agent

By active component Physcion and tetramycin, formula is pressed with each components such as dispersing agent, wetting agent, thickener and water Ratio be uniformly mixed, after sand milling and/or high speed shear, obtain semi-finished product, after analysis water supplement be uniformly mixed filters to obtain the final product Suspending agent.

Embodiment 7:10.5% Physcion tetramycin suspending agent

Physcion 10%, tetramycin 0.5%, lignosulfonates 5.5%, alkyl naphthalene formaldehyde condensate sulfonate 6%, bentonite 3%, xanthan gum 2%, toluene 12%, organosilicon 0.3%, water complements to 100%.

Embodiment 8:6% Physcion tetramycin suspending agent

Physcion 1%, tetramycin 5%, styrene alkyl polyoxyethylene ether phosphate 4%, dialkyl succinylsuccinate ester sulphur Hydrochlorate 4%, aluminium chloride 1%, pectin 1.5%, cyclohexanone 10%, organosilicon 0.1%, water complements to 100%.

Embodiment 9:13.95% Physcion tetramycin suspending agent

Physcion 0.45%, tetramycin 13.5%, naphthalene sulfonate 4%, lauryl sodium sulfate 5%, ammonium sulfate 2%, aluminium-magnesium silicate 3%, glycerine 15%, higher alcohols 0.5%, water complements to 100%.

Two, drug effect verification test

(1) Assays Example

The incidence that whole strain blade is investigated according to test grade scale, calculates disease index and control efficiency.

Control efficiency is converted into probability value (y), liquor strength (μ g/ml) is converted into logarithm (x), with least square method Concentration EC50 in calculating virulence equation and inhibiting, the toxicity index and co-toxicity coefficient (CTC) of medicament are calculated according to Sun Yunpei's Method.

Survey toxicity index (ATI)=(standard agent EC50/ reagent agent EC50) * 100

Percentage composition+B medicament toxicity index * the mixture of A in theoretical toxicity index (TTI)=A medicament toxicity index * mixture The percentage composition of middle B

Co-toxicity coefficient (CTC)=[mixture surveys toxicity index (ATI)/mixtures theoretical toxicity index (TTI)] * 100

CTC≤80, composition show as antagonism, 80 < CTC < 120, and composition shows as summation action, and CTC >= 120, composition shows as synergistic effect.

1, Physcion is compounded with tetramycin tests flowers tulip brown spot toxicity test

1. Physcion of table is compounded with tetramycin to flowers tulip foxiness toxicity test interpretation of result

Medicament title	EC50(ug/mL)	ATI	TTI	CTC
					Physcion	3.28	100.00	\	\
Tetramycin	3.05	107.54	\	\
					Physcion: tetramycin=40:1	2.76	118.84	100.18	118.62
Physcion: tetramycin=30:1	2.57	127.63	100.24	127.32
					Physcion: tetramycin=20:1	2.50	131.20	100.36	130.73
Physcion: tetramycin=10:1	2.31	141.99	100.69	141.02
					Physcion: tetramycin=5:1	2.15	152.56	101.26	150.66
Physcion: tetramycin=1:1	1.84	178.26	103.77	171.78
					Physcion: tetramycin=1:5	1.90	172.63	106.28	162.43
Physcion: tetramycin=1:10	2.02	162.38	106.85	151.96
					Physcion: tetramycin=1:20	2.32	141.38	107.18	131.91
Physcion: tetramycin=1:30	2.46	133.33	107.30	124.27
					Physcion: tetramycin=1:40	2.53	129.64	107.36	120.76

As a result (table 1) shows in Physcion: in tetramycin=30~1:1~30 interval ranges, Physcion with Tetramycin compounding significantly improves the control efficiency of flowers tulip foxiness, when Physcion: malicious altogether when tetramycin=1:1 Coefficient is up to 171.78, illustrates that the two compounding has significant synergistic effect to the prevention and treatment of flowers tulip foxiness.

(2) field efficacy verification test

Test method: it at the initial stage of a disease, carries out for the first time by spraying, carrying out being administered for second after 7 days immediately, each processing 4 A cell, each 20 square meter of cell.11 days investigation statistics incidences, 5 points of each cell are random before medicine and after second of medicine Sampling, 5 plants of crops of every investigation, the lesion area for investigating every blade in whole strain account for percentage and the classification of blade area, calculate Disease index and control efficiency.

It is expected that preventive effect (%)=X+Y-XY/100 (wherein, X, Y are single dose preventive effect)

Grade scale:

0 grade: disease-free spot；

1 grade: leaf spot lesion is less than 5, and length is less than 1cm；

3 grades: leaf spot lesion 6-10, part scab length is greater than 1cm；

5 grades: leaf spot lesion 11-25, part scab is linked to be piece, and lesion area accounts for the 10-25% of leaf area；

7 grades: leaf spot lesion 26 or more, scab is linked to be piece, and lesion area accounts for the 26-50% of leaf area；

9 grades: scab is linked to be piece, lesion area account for 50% of leaf area or more or full leaf it is withered.

1, Physcion compounds field efficacy experiment with tetramycin

2 Physcion of table and tetramycin mixture are to sorghum loose smut control efficiency

Measurement result (table 2) shows that Physcion significantly improves sorghum loose smut preventive effect with compounding for tetramycin, Illustrate that the two compounding has significant synergistic effect to sorghum loose smut.

Claims (7)

1. a kind of microbicide compositions, it is characterised in that the composition includes two kinds of active groups of Physcion and tetramycin Point, wherein the weight ratio between the Physcion and tetramycin is 30~1:1~30.

2. microbicide compositions according to claim 1, it is characterised in that the active component Physcion and four The weight ratio of mycin is 20~1:1~20.

3. microbicide compositions according to claim 1 or 2, it is characterised in that the composition is helped by active constituent and pesticide The dosage form allowed on pesticide is made in agent or auxiliary material.

4. microbicide compositions according to claim 3, it is characterised in that the composition by 1~85% parts by weight activity The dosage form allowed on pesticide is made in the insecticides adjuvant or auxiliary material of component and 99~15% parts by weight.

5. microbicide compositions according to claim 3 or 4, it is characterised in that the dosage form be aqua, microemulsion or Suspending agent.

6. microbicide compositions according to claim 3 or 4, it is characterised in that the insecticides adjuvant or auxiliary material are selected from and carry One or more of body, solvent, dispersing agent, wetting agent, adhesive, thickener, adhesive, surfactant or fertilizer.

7. use of the microbicide compositions described in claim 1~6 any one in terms of agriculture field prevents and treats corps diseases On the way.