CN103891745A

CN103891745A - Germicide and application thereof

Info

Publication number: CN103891745A
Application number: CN201410124492.5A
Authority: CN
Inventors: 林建文
Original assignee: HAINAN LIZHI GENETIC ENGINEERING Co Ltd
Current assignee: HAINAN LIZHI GENETIC ENGINEERING Co Ltd
Priority date: 2014-03-28
Filing date: 2014-03-28
Publication date: 2014-07-02

Abstract

The invention provides a germicide. The germicide contains the following ingredients in percentage by mass: 35% of ingredient A, 11.14% of ingredient B and the balance of water, wherein the ingredient A contains thiophanate-methyl and tebuconazole; the ingredient B contains a dispersant, a wetting agent, a defoamer, a suspending agent, an antiseptic, an antifreezer and a thickener. Through the reasonable proportioning ratio and synergistic effect of all the ingredients, the germicide has the characteristics that prevention and treatment effects are good, the suitable dosing period is long, the dosage is low, the harm caused by the germicide is lowered, the drug tolerance and drug resistance of germs are delayed, the cost of investment is low, the cycle of research and development is short, the economic value is high, and the like. The invention further discloses application of the germicide in prevention and treatment of cucumber anthracnose.

Description

A kind of bactericide and application thereof

Technical field

The present invention relates to pesticide field, refer to especially a kind of bactericide and application thereof.

Background technology

Using chemical agent is the most effectively means of controlling plant diseases.In the practice of plant disease chemical control, germ easily produces resistance to medicament, and germ medicine resistance ability increases year by year.

Exploitation new product bactericide price is constantly soaring, and the new drug cost of investment of exploitation high-efficiency low-toxicity, low-residual is high, the R&D cycle is long, and economic worth is low.

The chemical bactericide of long-term high dose, easily causes the problem such as residual, environmental pollution and the development of drug resistance germ of medicament.Irrational chemical sterilization agent prescription control efficiency is poor, the optimum period for applying fertilizer is short, dosage is high, poisoning is strong, delay germ drug resistance and drug-fast ability.

Summary of the invention

An object of the present invention is to propose a kind of bactericide, adopt rational proportion, efficiently solve that new product development cost is high, the R&D cycle is long, economic worth is low and irrational chemical sterilization agent prescription control efficiency is poor, the optimum period for applying fertilizer is short, dosage is high, poisoning is strong, delay germ drug resistance and the poor problem of pesticide resistance ability.

Another object of the present invention is to propose the application of a kind of bactericide aspect control cucumber anthracnose disease.

Technical scheme of the present invention is achieved in that a kind of bactericide, comprises A component, B component and water, and the mass percent of described A component is 35%, contains thiophanate-methyl and Tebuconazole; The mass percent of B component is 11.14%, contains wetting dispersing agent, dispersant, defoamer, suspending agent, preservative, antifreezing agent, thickener; Surplus is water.

Preferably, the mass percent that described thiophanate-methyl accounts for described bactericide is 25%, and the mass percent that described Tebuconazole accounts for described bactericide is 10%.

Described thiophanate-methyl is efficient, low toxicity bactericide, interference cell fission process, in plant corpus, very easily infiltration is converted into carbendazim, disturb the formation of spindle in mitosis, affect cell division, there is prevention and systemic action, because medicament can change into carbendazim after entering in plant corpus, therefore also belong to benzimidazole.Can be widely used in the multiple diseases such as grain, cotton, oil, vegetables, fruit tree.

Described Tebuconazole belongs to triazole bactericidal agent, is mercaptan demethylation inhibitor, is for the seed treatment of Important Economic crop or the efficient systemic fungicide of foliage spray.Multiple rust, powdery mildew, net blotch, root rot, head blight, smut that can effectively preventing cereal crop and plant and pass zonate spot, tea tree tea gall, sigatoka, anthracnose etc.

Preferably, described wetting dispersing agent is anionic and nonionic type compound, and the mass percent that accounts for described bactericide is 4%.

Preferably, described dispersant is nonionic compound, and the mass percent that accounts for described bactericide is 1.04%.

Preferably, described defoamer is organosilicon, and the mass percent that accounts for described bactericide is 0.4%.

Described organosilicon not only can be used as defoamer, also can make leaf dark green, beautiful in colour, can improve quality, and fruit color is good, and sugar improves, and reduces physiological fallen fruit.

Preferably, described suspending agent is white carbon, and the mass percent that accounts for described bactericide is 0.3%.

Described white carbon is the general name of white powder X-ray amorphous silicic acid and silicate product, mainly refers to precipitated silica, aerosil, superfine silicon dioxide gel and aeroge, also comprises Powdered synthetic aluminium silicate and calcium silicates etc.In agricultural chemical, as agricultural chemicals, efficiently spray fertilizer etc., use white carbon to make suspending agent or thinner, disintegrant, can keep lasting effect, because its ultra-high surface area has high absorption affinity, be easy to suspend, there are good compatibility and chemical stability.Even under rainwater, flushing and hot condition, still can remain unchanged for a long time

Preferably, described preservative is Sodium Benzoate, and the mass percent that accounts for described bactericide is 0.24%.

Described Sodium Benzoate preservative is had an effect with its non-dissociated molecule, non-dissociated benzoic acid lipophile is strong, easily pass through cell membrane, enter in cell, disturb the permeability of the microbial cell films such as mould and bacterium, block cell film is to amino acid whose absorption, enter intracellular benzoic acid molecule, the intracellular storage alkali of acidifying, suppresses the activity that the respiratory enzyme in microbial cell is, thus the antisepsis of playing.

Preferably, described antifreezing agent is ethylene glycol, and the mass percent that accounts for described bactericide is 5%.

Preferably, described thickener is xanthans, and the mass percent that accounts for described bactericide is 0.16%.

Described xanthans stability is strong, and thickening effect is good, and xanthan gum solution has the full-bodied characteristic of low concentration (viscosity of 1% aqueous solution is equivalent to 100 times of gelatin).

Described bactericide is applied to control cucumber anthracnose disease, has good control efficiency.

Beneficial effect of the present invention is: the described bactericide that the present invention proposes, adopt thiophanate-methyl and Tebuconazole as active ingredient, combine with nonionic compound, organosilicon, white carbon, Sodium Benzoate, ethylene glycol, xanthans etc., cooperatively interact, synergy, have that control efficiency is good, the optimum period for applying fertilizer is long, dosage is low, low poisoning, delay germ drug resistance and pesticide resistance, cost of investment is low, the R&D cycle is short, economic worth high.

Embodiment

For understanding better the present invention; below by following examples, the present invention is done to further concrete elaboration; but unintelligible is limitation of the invention; the foregoing invention content of some nonessential improvement and adjustment do according to to(for) those skilled in the art, be also considered as dropping in protection scope of the present invention.

Embodiment 1

According to content provided by the invention, inventor makes bactericide, and wherein the proportioning of each component and preparation process are as follows:

Each component accounts for described bactericide mass percent:

Wherein the concrete model source of each component is as follows:

The preparation process of above-mentioned bactericide is:

Step 1, weighs up each component in proportion, and thiophanate-methyl, Tebuconazole, anionic and nonionic type compound, nonionic compound, organosilicon, white carbon, ethylene glycol, water are mixed and adds shearing still, shears evenly, obtains precomminution material;

Step 2, adds skin grinder by precomminution material, the frosted that circulates, the former powder of the sand milling footpath grind away that shakes out while reaching requirement;

Step 3, sand milling sample enters shears still (the remaining water of the residual sample in sand mill rinses again), in shearing still, add xanthans, Sodium Benzoate to carry out shear-mixed and evenly become qualified suspending agent liquid, go out sample packing and obtain finished product (35% thiophanate-methyl tebuconazole suspension concentrates).

Inventor prevents and treats the test of cucumber anthracnose disease to the finished product obtaining (35% thiophanate-methyl tebuconazole suspension concentrates):

Subjects: cucumber

Controlling object: cucumber anthracnose

Reagent agent:

Result of the test:

Drug effect computational methods:

Disease index=100 × ∑ (the sick number of sheets × relative level numerical value at different levels)/(investigating the total number of sheets × 9)

Severity Scaling standard:

0 grade: blade is without scab;

1 grade: lesion area accounts for whole blade area below 5%;

3 grades: lesion area accounts for whole blade area 6%-10%;

5 grades: lesion area accounts for whole blade area 11%-25%;

7 grades: lesion area accounts for whole blade area 25%-50%

9 grades: lesion area accounts for whole blade area more than 50%;

CK ₀: disease index before the dispenser of blank district;

CK ₁: disease index after the dispenser of blank district;

Pt ₀: disease index before the dispenser of chemicals treatment region;

Pt ₁: disease index after the dispenser of chemicals treatment region.

Claims

1. a bactericide, is characterized in that: comprise A component, B component and water, the mass percent of described A component is 35%, contains thiophanate-methyl and Tebuconazole; The mass percent of B component is 11.14%, contains wetting dispersing agent, dispersant, defoamer, suspending agent, preservative, antifreezing agent, thickener; Surplus is water.

2. bactericide as claimed in claim 1, is characterized in that: the mass percent that described thiophanate-methyl accounts for described bactericide is 25%, the mass percent that described Tebuconazole accounts for described bactericide is 10%.

3. bactericide as claimed in claim 1 or 2, is characterized in that: described wetting dispersing agent is anionic and nonionic type compound, the mass percent that accounts for described bactericide is 4%.

4. bactericide as claimed in claim 1 or 2, is characterized in that: described wetting agent is nonionic compound, the mass percent that accounts for described bactericide is 1.04%.

5. bactericide as claimed in claim 1 or 2, is characterized in that: described defoamer is organosilicon, the mass percent that accounts for described bactericide is 0.4%.

6. bactericide as claimed in claim 1 or 2, is characterized in that: described suspending agent is white carbon, the mass percent that accounts for described bactericide is 0.3%.

7. bactericide as claimed in claim 1 or 2, is characterized in that: described preservative is Sodium Benzoate, the mass percent that accounts for described bactericide is 0.24%.

8. bactericide as claimed in claim 1 or 2, is characterized in that: described antifreezing agent is ethylene glycol, the mass percent that accounts for described bactericide is 5%.

9. bactericide as claimed in claim 1 or 2, is characterized in that: described thickener is xanthans, the mass percent that accounts for described bactericide is 0.16%.

10. the application of bactericide aspect control cucumber anthracnose disease as claimed in claim 1 or 2.