CN104472507B - A kind of Bactericide composition preventing and treating soil-borne disease - Google Patents
A kind of Bactericide composition preventing and treating soil-borne disease Download PDFInfo
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- CN104472507B CN104472507B CN201410691885.4A CN201410691885A CN104472507B CN 104472507 B CN104472507 B CN 104472507B CN 201410691885 A CN201410691885 A CN 201410691885A CN 104472507 B CN104472507 B CN 104472507B
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Abstract
The present invention discloses a kind of containing the fungicidal composition of Truban and tebuconazole, the active ingredient of described Bactericide composition is Truban and tebuconazole, the mass ratio of Truban and tebuconazole is 1:20 to 20:1, and in composition, active ingredient mass percentage is 1-80%. The Bactericide composition of the present invention, to multiple silborne fungal diseases good anti-effect again, delays the emergence and development of pathogen resistance simultaneously, and reduce produce actual in prevent and treat dosage, efficient, economy, safety, environmental protection.
Description
Technical field
The present invention relates to disinfectant use in agriculture field, it is specifically related to a kind of containing the fungicidal composition of Truban and tebuconazole.
Background technology
Soil-borne disease refers to the Plant diseases infecting by the soil-borne disease original and causing, and belongs to root disease category, lives in soil with invalid body, from crop root or stem infringement crop when condition is suitable, based on fungal disease, is divided into non-obligate host and obligate host two class. The root that non-obligate is external infects fungi, and the seedling maize ear rot and samping off, the rhizoctonia that cause such as pythium spp cause seedling blight; Obligatory parasitism is plant vasular bundle pathogenic fungi, typically resemble that point spore sickle, Huang wither that wheel branch spore etc. causes here wither, withered.
In recent years, owing to soil is managed intensive more and more higher, the continuous cropping phenomenon of farm crop is more and more general, and plantation one class crop, makes corresponding soil-borne disease pathogenic bacteria be bred year after year, accumulate in a large number in soil continuously, forms sick soil, falls ill every year. Use in a large number chemical fertilizer especially nitrogenous fertilizer can stimulate the sickle-like bacteria of soil-borne disease, Verticillium and rhizoctonia growth, thus increased the weight of the generation of soil-borne disease. In addition, the harm of soil nematodes has also increased the weight of the generation of soil-borne disease.
The method that present stage prevents and treats soil-borne disease is mainly soil disinfection and chemicals treatment. The using method of soil disinfectant is evenly spread fertilizer over the fields by sterilizing agent at canopy on the ground, beats with rotary cultivator, covering with plastic film, takes off film after 20 ~ 25 days. Needing to water if desired, the method effect is better, but time-consuming takes a lot of work, and expends time in many; The medicaments such as the multiplex derosal of chemical control, thiram or both mixtures carry out filling with root control, and the long-time use of the medicament such as derosal, thiram has caused the generation of pathogenic bacteria resistance, and anti-effect declines year by year. This is exactly early stage seedling is carried out sterilization and disinfection work, still there will be the reason of dead of a large amount of rotten after later stage field planting.
The how generation of more effective control soil-borne disease, especially more efficient, easy kills, controls soil-borne disease, has become numerous scientific workers and key subjects that grower faces.
Truban (Etridiazole), another name etridiazole, chemical name: 5-oxyethyl group-3-trichloromethyl-1,2,4-thiadiazoles is a kind of organic bactericide for soil treatment, and yellow liquid is tagging property sterilant, seed/soil treatment. The pathogenic fungi of vegetable at protected field and land for growing field crops various crop, bacterium, virus and bacteroid there are is good insect killing effect, especially to the pathogenic bacteria of residual in soil, there is good action of contace poison. Solubleness in water is 50mg/L (25 DEG C).Dissolve in acetone, tetracol phenixin. Formulation is pulvis. Hydrobiont is had pole high toxicity, it is possible to water body environment is produced long-term detrimentally affect. Formulation is generally 20% wettable powder.
Tebuconazole (Tebuconazole), chemical name: (RS)-1-(4-chloro-phenyl-)-4,4-dimethyl-3-(1H-1,2,4 triazol-1-yl methyl) penta-3-alcohol. Sterling is clear crystal, and in water, solubleness is 32mg/L, and in toluene, solubleness is 50 ~ 100g/L. Belonging to low sterilization agent, it is possible to the biosynthesizing of Antifungi ergosterol, be a kind of efficient, wide spectrum, interior absorption triazole species sterilization pesticide, have protection, treat, root out three zones, fungicidal spectrum is wide, the lasting period is long. Tebuconazole is mainly used in the multiple fungal disease prevented and treated on wheat, paddy rice, peanut and other crops, and the diseases such as root rot, banded sclerotial blight, zonate spot are had good anti-effect. Formulation has 125g/L aqueous emulsion, 25% missible oil, 25% wettable powder, 43% suspension agent, 80% water dispersible granules and seed treatment agent.
It is little to prevent and treat the report of soil-borne disease that Truban is applied to soil disinfection at home, and tebuconazole is the main component of seed treatment agent at home at present. At present also not by both composite usages in the report of soil treatment.
Summary of the invention
The present invention provides a kind of fungicidal composition containing Truban and tebuconazole, has soil treatment fungicidal activity height, and dosage is little, and on plant growth without impact, the feature of economic, efficient, environmental protection, has special efficacy to control soil-borne fungus venereal disease evil.
Multiple soil-borne disease is had stronger killing action by this Bactericide composition, and its sterilization mode is that liquid is tagged, and can be used for protecting field and open ground soil sterilization, muck and seedbed soil sterilization, protects air-ground canopy sterilize and fill with root diseases prevention after crop definite value.
Using method is soil, muck liquid is bold and vigorous waters, and empty canopy sprays stifling, and fills with root after crop definite value. The disease problem after continuous cropping can be solved preferably.
Two classes are had the sterilant of different mechanism of action by the present invention, namely Truban combines mutually with tebuconazole, and be processed into and produce the upper preparation easily used, it is used alone in two kinds of compositions and compares, there is biological activity height, dosage decline total in unit surface, greatly reduce dispenser cost, delay pathogen resistance emergence and development to a greater extent simultaneously, reduce the risk that single sterilant is produced resistance by pathogenic fungi, extend the work-ing life of each component in fungicidal composition, thus realize the goal of the invention of economy, efficient, environmental protection.
The technical scheme of the present invention is:
A kind of containing the Bactericide composition of Truban and tebuconazole, it is characterized in that, the active ingredient of described Bactericide composition is the mass ratio of Truban and tebuconazole, Truban and tebuconazole is 1:20 to 20:1, and in composition, active ingredient mass percentage is 1-80%.
The described fungicidal composition containing Truban and tebuconazole, it is characterised in that: described active ingredient Truban and the mass ratio of tebuconazole are 10:1 to 1:1.
The described fungicidal composition containing Truban and tebuconazole, it is characterised in that: described Truban and the mass ratio of tebuconazole are 5:1 to 1:1.
The described Bactericide composition containing Truban and tebuconazole, it is characterised in that: the formulation of described Bactericide composition is suspension agent, missible oil, water dispersible granules or wettable powder.
The described Bactericide composition containing Truban and tebuconazole is applied, it is characterised in that: various crop silborne fungal diseases is had good prevention effect by this Bactericide composition.
Unusual effect and the advantage of the present invention be:
Soil-borne fungus venereal disease evil is had higher prevention effect by the present invention, there is notable synergistic effect between two components;Part high price pesticide species can be replaced, and reduce dosage, effectively reduce ecological damage and environmental pollution, and crop yield and quality can be improved; Germ can be delayed to the resistance of single medicament.
First the EC of Truban and tebuconazole two single compound (hereinafter referred to as medicament) is measured50(drug safety index), according to the EC of two single medicaments50The portfolio ratio of two medicaments is set by the abundant method of Sun Yun, and according to cotoxicity coefficient CTC value, it is determined that suitable composition ratio.
Test objective thing is rhizoctonia cerealis and tomato seedling damping-off bacterium, but is not limited to this. Test adopts mycelial growth rate method, makes containing medicine substratum by different treatment, and each process 4 repetitions, connect bacterium after 3 days, investigate each process to the growth inhibitory effect of fusarium graminearum. By the linear regression analysis between the probit value of anti-effect and the logarithmic value of series drug concentration, obtain the EC of each medicament50, calculate cotoxicity coefficient (CTC) according to the abundant method of Sun Yun, and make comprehensive evaluation accordingly. CTC≤80 represent to have antagonistic action, and 80 < CTC < 120 represent to have summation action, and CTC >=120 are synergism. CTC value calculating method is as follows:
The EC of CTC=A50* the EC of B50* the EC50*(P of 100/(MA* the EC of B50+PB* the EC of A50))
Table 1 Truban and tebuconazole composition are to the indoor biometrics result of wheat hypochnus
| Proportioning (A:B) | Regression equation | Relation conefficient | EC50(mg/L) | CTC |
| Truban (A) | Y=1.763+1.078x | 0.988 | 0.735 | - |
| Tebuconazole (B) | Y=1.218+0.819x | 0.992 | 0.054 | - |
| 20:1 | Y=1.336+1.543x | 0.991 | 0.311 | 147.66 |
| 10:1 | Y=0.876+1.549x | 0.990 | 0.21 | 163.06 |
| 5:1 | Y=2.054+0.943x | 0.989 | 0.101 | 234.61 |
| 1:1 | Y=1.833+1.744x | 0.994 | 0.067 | 150.16 |
| 1:5 | Y=1.523+0.755x | 0.996 | 0.047 | 135.88 |
| 1:10 | Y=1.636+1.590x | 0.979 | 0.044 | 134.02 |
| 1:20 | Y=2.314+1.010x | 0.986 | 0.040 | 141.23 |
As can be seen from the above data, Truban and the tebuconazole composition of different ratios are different to the fungistatic effect of rhizoctonia cerealis, on the whole, its ratio has synergism in the scope of 1:20 to 20:1, wherein maximum enhancing proportions is 5:1, and maximum enhancing proportions scope is 10:1 ~ 1:1.
Table 2 Truban and tebuconazole composition are to the indoor biometrics result of tomato seedling damping-off
| Proportioning (A:B) | Regression equation | Relation conefficient | EC50(mg/L) | CTC |
| Truban (A) | Y=0.747+1.134x | 0.994 | 0.240 | - |
| Tebuconazole (B) | Y=1.414+0.976x | 0.987 | 0.036 | - |
| 20:1 | Y=1.754+1.121x | 0.993 | 0.147 | 128.57 |
| 10:1 | Y=1.991+0.759x | 0.982 | 0.102 | 155.29 |
| 5:1 | Y=1.010+1.223x | 0.996 | 0.074 | 166.80 |
| 1:1 | Y=1.420+1.239x | 0.987 | 0.033 | 189.72 |
| 1:5 | Y=1.296+2.014x | 0.983 | 0.031 | 135.30 |
| 1:10 | Y=1.525+1.643x | 0.991 | 0.031 | 125.85 |
| 1:20 | Y=1.841+1.236x | 0.988 | 0.027 | 138.96 |
As can be seen from the above data, Truban and the tebuconazole composition of different ratios are different to the fungistatic effect of tomato seedling damping-off bacterium, on the whole, its ratio has synergism in the scope of 1:20 to 20:1, wherein maximum enhancing proportions is 1:1, and maximum enhancing proportions scope is 10:1 ~ 1:1.
Below in conjunction with embodiment, the invention will be further described, it is contemplated that to processing complexity and the price factor of Truban and tebuconazole, and this experiment determines the optimal proportion adopting 1:1 as both mixtures, but is not limited to this. The content of content effective constituent involved in embodiment is also not limited to this.
Embodiment
Embodiment 1 (45% Truban tebuconazole suspension concentrates)
Composition of raw materials: by mass percentage
Active ingredient Truban 12.5%
Active ingredient tebuconazole 12.5%
NNO3%
JFC-E2%
OP-102%
Xanthan gum 0.15%
Propylene glycol 1%
Octanol 0.1%
Water surplus.
Preparation method is as follows:
According to formula, individual component is weighed in proportion, add ball mill ball milling 30 minutes, filtering, suction dispersion tank high speed shear was fully ground through sand mill after 3 minutes, and control solid ingredient particle dia is within 2 microns, grinding is stirred evenly after terminating, and obtains suspension agent product.
Embodiment 2 (60% Truban tebuconazole missible oil)
Composition of raw materials: by mass percentage
Active ingredient Truban 30%
Active ingredient tebuconazole 30%
Toluene 20%
Anhydrous calcium salt 5%
Tween 80 5%
Tetracol phenixin surplus.
Preparation method: fully dissolved in toluene reactor by active ingredient tebuconazole, makes A liquid;Active ingredient Truban is fully dissolved in carbon tetrachloride reaction still, makes B liquid; Not stopping, under whipped state, A liquid is mixed into B liquid, stir, add anhydrous calcium salt and tween 80, then adjust content with solvent tetracol phenixin.
Embodiment 3(50% Truban tebuconazole water dispersible granule)
Active ingredient Truban 25%
Active ingredient tebuconazole 25%
Methyl fatty amide Phenylsulfonic acid calcium 4%
Sodium carbonate 3%
Sodium lignosulfonate 4%
Kaolin surplus.
Preparation method: Truban, tebuconazole, methyl fatty amide Phenylsulfonic acid calcium, sodium carbonate, attapulgite are mixed together after evenly, it is crushed to particle diameter 5 μm through micronizer mill, obtain female powder, mother's powder fully mixed rear granulation with sodium lignosulfonate, dries, sieve, thus obtained water-dispersible granules.
Embodiment 4(50% Truban tebuconazole wettable powder)
Active ingredient Truban 25%
Active ingredient tebuconazole 25%
Wood sodium 3%
Carbonic acid amine 3%
White carbon black 10%
Attapulgite surplus.
Preparation method: by above-mentioned substance Homogeneous phase mixing, mixture is pulverized through micronizer mill, obtained wettable powder.
Prevention effect is tested:
The field efficiency test of wheat hypochnus carries out on Long Kang farm, Huaiyuan, and test area is 0.3hm2, often process repeats three times, carries out root irrigation after being diluted by medicament when wheat cultivation, carries out the investigation of anti-effect in dispenser after 25 days, and control the results are shown in Table 3. Result shows, wheat hypochnus is had good prevention effect by this fungicidal composition, can reach higher prevention effect under same dose or lower using dosage, and each process anti-effect bacterium of this fungicidal composition is greater than 85%, is significantly higher than comparison medicament.
The land for growing field crops drug effect of table 3 Truban tebuconazole fungicidal composition control wheat hypochnus
The field efficiency test of tomato seedling damping-off is located in the warmhouse booth of suburb, Hefei City, and this field damping-off spends generation, test area 0.1hm in average annual2, often process repeats three times, carries out medicament root irrigation after tomato seedling is transplanted, and the sickness rate of 15 days investigation damping-offs after tomato field planting, control the results are shown in Table 4. Result shows, tomato seedling damping-off is had good prevention effect by this fungicidal composition, can reach higher prevention effect under same dose or lower using dosage, and each process anti-effect bacterium of this fungicidal composition is greater than 80%, is significantly higher than comparison medicament.
The land for growing field crops drug effect of table 4 Truban tebuconazole fungicidal composition control tomato seedling damping-off
By the data of table 3 and table 4 it will be seen that wheat hypochnus and tomato seedling damping-off are all had good anti-effect by the fungicidal composition containing Truban and tebuconazole.
Finally, in addition it is also necessary to it is to be noted that, what more than enumerate is only some the specific embodiments of the present invention. Obviously, the invention is not restricted to above embodiment, it is also possible to have a lot of distortion. All distortion that the those of ordinary skill of this area can directly derive from content disclosed by the invention or associate, all think the scope of protection of the invention.
Claims (4)
1. one kind contains the Bactericide composition of Truban and tebuconazole, it is characterized in that, the active ingredient of described Bactericide composition is the mass ratio of Truban and tebuconazole, Truban and tebuconazole is 1:20 to 20:1, and in composition, active ingredient mass percentage is 1-80%.
2. according to claim 1 containing the Bactericide composition of Truban and tebuconazole, it is characterised in that: described active ingredient Truban and the mass ratio of tebuconazole are 10:1 to 1:1.
3. according to claim 1 containing the Bactericide composition of Truban and tebuconazole, it is characterised in that: described Truban and the mass ratio of tebuconazole are 5:1 to 1:1.
4. according to claim 1 and 2 containing the Bactericide composition of Truban and tebuconazole, it is characterised in that: the formulation of described Bactericide composition is suspension agent, missible oil, water dispersible granules or wettable powder.
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| CN102845454A (en) * | 2012-10-12 | 2013-01-02 | 北京燕化永乐农药有限公司 | Compound pesticide and fungicide |
| CN103651454A (en) * | 2013-12-20 | 2014-03-26 | 李视辉 | Composition of sustained-release soil fungicide |
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| CN102845454A (en) * | 2012-10-12 | 2013-01-02 | 北京燕化永乐农药有限公司 | Compound pesticide and fungicide |
| CN103651454A (en) * | 2013-12-20 | 2014-03-26 | 李视辉 | Composition of sustained-release soil fungicide |
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