CN103053531A - Bactericide composition - Google Patents
Bactericide composition Download PDFInfo
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- CN103053531A CN103053531A CN201110328690XA CN201110328690A CN103053531A CN 103053531 A CN103053531 A CN 103053531A CN 201110328690X A CN201110328690X A CN 201110328690XA CN 201110328690 A CN201110328690 A CN 201110328690A CN 103053531 A CN103053531 A CN 103053531A
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- metrafenone
- bupirimate
- powdery mildew
- bactericidal composition
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Abstract
The invention relates to a bactericide composition which has active ingredients including metrafenone (A) and ethirimol or bupirimate (B), wherein the mass ratio of the A to the B is 50:1 to 1:50. After the A is compounded with the B, the synergism is obvious. The bactericide composition is used for controlling powdery mildew of cucumbers, eggplants, bitter gourds, melons, wheat, strawberries, mangos, grapes, apples and chrysanthemum.
Description
Technical field
The present invention relates to a kind of bactericidal composition, especially a kind of bactericidal composition that contains metrafenone.
Background technology
Powdery mildew is the important disease in the agricultural production, often causes the agricultural production heavy losses.In recent years, because single drug and Scientific Usage of Drugs have not caused the powdery mildew pesticide resistance more and more serious, become a great problem of chemical control.
Metrafenone, English common name Metrafenone, has lipophilicity, easily by plant absorbing, mechanism of action mechanism is novel, by transmission and the effect of interference pathogene a-Actin, thereby suppresses pathogen growth, almost all vegetative stages of pathogen all effectively be can be used for preventing and treating the powdery mildew of all kinds of crops, with other bactericide without cross resistance.But use separately relative price higher, long-term separately use also is unfavorable for resistance management.
The phonetic phenol of second (ethirmol) or bupirimate (bupirimate); be adenosine deaminase inhibitors; have protection and therapeutic action; it is systemic fungicide; can be absorbed rapidly by plant roots, stem, leaf; and in plant corpus, run to each position, so resistance of rainwater washing against.Powdery mildew there is special efficacy, lasting period 10～14d after the dispenser.But owing to use for many years, resistance occurred at present and caused drug effect to descend.
The composite report that there is no of present metrafenone and the phonetic phenol of second or bupirimate.
Summary of the invention
The object of the invention is to: provide use on a kind of suitable agricultural, to powdery mildew have outstanding control efficiency, Synergistic bactericidal composition.
For solving the problems of the technologies described above, the inventor is by a large amount of biologicall test screenings, and unexpected discovery metrafenone and the phonetic phenol of second or bupirimate are composite with certain proportion, and the crop powdery mildews such as cucumber are had significant synergies.
On the basis of above-mentioned discovery, through composition is carried out symphyogenetic quantitative analysis, formed technical scheme of the present invention, namely take metrafenone (A) as a kind of active ingredient, for the phonetic phenol of second or bupirimate (B) are another kind of active ingredient, (A) be 50 with (B) mass ratio: 1-1: 50, ratio is 20 preferably: 1-1: 20.
The present composition can be prepared into known method the formulation that is fit to agricultural use, and the total content of active ingredient is 5%-80% in the preparation.
The adjuvant that uses in the composition of the present invention comprises that dispersant, wetting agent, antifreezing agent, bleeding agent etc. and other are of value to the known substance that active ingredient is stablized and drug effect is brought into play in storing and using, all be various compositions commonly used in the pesticidal preparations or that permission is used, be not particularly limited, concrete composition and consumption require to determine by simple experiment according to prescription.
Composition described in the invention can the finished product preparation form provide, and namely each material mixes in the composition, and the composition of composition also can provide with the single dose form, directly directly mixes in bucket or tank before the use, then is diluted to required concentration.
Bactericidal composition of the present invention is mainly used in the disease of vegetables, wheat, melon and fruit, flowers and other crops, especially controlling powdery mildew.
Compared with prior art, the beneficial effect of the present invention's generation is: (1) is compared with single dose, and this bactericidal composition has obvious synergy to powdery mildew, has improved control efficiency; (2) can significantly reduce the field dosage, effectively environmental contamination reduction and residue of pesticide reduce and produce and use cost; (3) mechanism of action of active ingredient is different in the bactericidal composition, is conducive to overcome and delay the generation of disease drug resistance.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer, the present invention describes with following specific embodiment, but the present invention is limited to absolutely not these examples.
The combination of active principles of different agricultural chemicals being carried out composite, is a kind of effectively and efficiently mode that solves at present some problems in the agricultural chemicals single dose application process.The agricultural chemicals of different cultivars shows three kinds of type of action after mixing usually, and namely summation action, synergistic effect and antagonism act on but which kind of is specially, and be unpredictable, only has by lot of experiments and just can know.Compound synergic is well filled a prescription, and can improve actual control efficiency, reduces the usage amount of agricultural chemicals, helps the generation of delaying drug resistance, is the important means of integrated control.
The present composition is take metrafenone (A) as a kind of active ingredient with at least a compound (B) that is selected from, and B is the phonetic phenol of second or bupirimate.Combination has obvious synergistic function to powdery mildew between them, and is not only the simple addition of two kinds of pharmacy effects, and this can very clearly from the result of following biologicall test example find out.
Biologicall test example: metrafenone (A) and the phonetic phenol of second or the composite Toxicity Determination to powdery mildew of cucumber of bupirimate (B)
Subjects: powdery mildew of cucumber germ (Sphaerotheca fuliginea)
Test is with reference to " pesticide bioassay technology " (old spring chief editor, publishing house of Beijing Agricultural University publishes), and the potted plant determination method of powdery mildew of cucumber is adopted in " farm-chemical indoor determination test rule NY/T1156.2-2006 " this test.On the basis of preliminary experiment, select 2 leaf periods, the consistent melon seedling of growing way, write tag number, insert in the potted plant cucumber seedling basin with permanent pen, according to the order of sequence discharging, adopt the foliar spray method, medicament is sprayed on the melon seedling leaf, will tries material after spraying is processed and in fume hood or greenhouse, dry in the shade and inoculate behind the 24h.In the greenhouse, cultivate 7d investigation prevention effect, grade scale is carried out State Standard of the People's Republic of China " pesticide field efficacy medicine test criterion () ", calculate control efficiency with disease index, carry out statistical analysis with the DPS data processing software, calculate the EC of each medicament
50, then press the abundant method of Sun Yun and calculate co-toxicity coefficient (CTC).
When CTC≤80, then the composition performance is for antagonism, and when 80＜CTC＜120, then the composition performance is for summation action, and when CTC 〉=120, then the composition performance is synergistic effect.Be calculated as follows and spend coefficient together.
Actual measurement toxicity index (ATI)=(standard medicament EC
50/ reagent agent EC
50) * 100
The percentage composition of B in the percentage composition of A+B medicament toxicity index * mixture in theoretical toxicity index (TTI)=A medicament toxicity index * mixture
Co-toxicity coefficient (CTC)=[mixture actual measurement toxicity index (the ATI)/theoretical toxicity index (TTI) of mixture] * 100
Give birth to and survey the embodiment result of the test referring to table 1,2
The serial proportioning of table 1 composition is to the Toxicity Determination result of powdery mildew of cucumber
Result of the test shows, the composite powdery mildew of cucumber of preventing and treating of the phonetic phenol of metrafenone and second, proportioning is 50: 1-1: in the time of between 50, listed proportioning co-toxicity coefficient CTC is more than 128.5, has synergistic effect, and 20: 1-1: in the time of between 20, listed proportioning co-toxicity coefficient all is higher than 143.4, and synergistic effect is more obvious.
The serial proportioning of table 2 composition is to the Toxicity Determination result of powdery mildew of cucumber
Result of the test shows, the composite powdery mildew of cucumber of preventing and treating of metrafenone and bupirimate, proportioning is 50: 1-1: in the time of between 50, listed proportioning co-toxicity coefficient CTC all is higher than 127.8, has obvious synergistic effect, and 20: 1-1: in the time of between 20, listed proportioning co-toxicity coefficient is all more than 152.0, and synergistic effect is the most obvious.
Measurement result shows that metrafenone (A) and the phonetic phenol of second or bupirimate (B) are composite, and proportioning is 50: 1-1: in the time of between 50, has obvious synergistic effect, 20: 1-1: in the time of between 20, synergistic effect is the most obvious, and co-toxicity coefficient is more than 143.4.
Bactericidal composition of the present invention can be prepared into known method wetting powder, suspending agent, missible oil, aqueous emulsion, microemulsion or the water dispersible granules that is fit to agricultural use.Below describe with specific embodiment, percentage is mass percent in the prescription.
The phonetic phenol suspending agent of embodiment 1:51% metrafenone second
The ratio of each component such as former medicine, dispersant, wetting agent and water in prescription mixed, after grinding and/or high speed shear, obtain the phonetic phenol suspending agent of 51% metrafenone second.
This embodiment is applied to the biocontrol of mango powdery mildew.The phonetic phenol suspending agent of 51% metrafenone second is sprayed by 5600 times of (metrafenone valid density is 89.3 μ g/ml, and the phonetic phenol valid density of second is 1.8 μ g/ml) thin ups, and the control efficiency of 7 days and 15 days is respectively 96.5%, 94.2% behind the medicine.20% metrafenone suspending agent by 2000 times (valid density is 100 μ g/ml) and the phonetic phenol suspending agent of 20% second by 2000 times (valid density is 100 μ g/ml), use with same method, 7 days preventive effect is respectively 80.1%, 82.2% behind the medicine, and 15 days preventive effect is respectively 78.9%, 80.3% behind the medicine.The composite rear synergistic effect of the phonetic phenol of metrafenone and second is obvious, to the preventive effect of mango powdery mildew significantly better than single dose.
Embodiment 2:20% metrafenone bupirimate aqueous emulsion
Former medicine, solvent, emulsifier are added together, make and be dissolved into even oil phase; Water-soluble component and water mixing are made water; Under high-speed stirred, oil phase is mixed with water, make 20% metrafenone bupirimate aqueous emulsion.
This embodiment is applied to prevent and treat wheat powdery mildew.20% metrafenone bupirimate aqueous emulsion is sprayed by 2000 times of (metrafenone valid density is 25 μ g/ml, and bupirimate valid density is 75 μ g/ml) thin ups, and the control efficiency of 7 days and 15 days is respectively 96.7%, 94.2% behind the medicine.20% metrafenone suspending agent by 2000 times (valid density is 100 μ g/ml) and 20% bupirimate suspending agent by 2000 times (valid density is 100 μ g/ml), use with same method, 7 days preventive effect is respectively 85.1%, 84.2% behind the medicine, and 15 days preventive effect is respectively 78.9%, 82.3% behind the medicine.The composite rear synergistic effect of metrafenone and bupirimate is obvious, to the preventive effect of wheat powdery mildew significantly better than single dose.
Embodiment 3:5% metrafenone bupirimate microemulsion
Former medicine, solvent, emulsifier are added together, make and be dissolved into even oil phase; Water-soluble component and water mixing are made water; Under high-speed stirred, oil phase is mixed with water, make 5% metrafenone bupirimate microemulsion.
This embodiment is applied to prevent and treat melon powdery mildew.5% metrafenone bupirimate microemulsion is sprayed by 500 times of (metrafenone valid density is 40 μ g/ml, and bupirimate valid density is 60 μ g/ml) thin ups, and the control efficiency of 7 days and 15 days is respectively 93.2%, 88.3% behind the medicine.5% metrafenone suspending agent by 500 times (valid density is 100 μ g/ml) and 5% bupirimate suspending agent by 500 times (valid density is 100 μ g/ml), use with same method, 7 days preventive effect is respectively 80.1%, 82.3% behind the medicine, and 15 days preventive effect is respectively 78.9%, 81.5% behind the medicine.The composite rear synergistic effect of metrafenone and bupirimate is obvious, to the preventive effect of melon powdery mildew significantly better than single dose.
The phonetic phenol wetting powder of embodiment 4:21% metrafenone second
Active component, various auxiliary agent and filler etc. are fully mixed in the ratio of prescription, behind ultra-fine pulverizer disintegrating, namely get the phonetic phenol wetting powder of 21% metrafenone second.
This embodiment is applied to grape powdery mildew.The phonetic phenol wetting powder of 21% metrafenone second is sprayed by 2000 times of (metrafenone valid density is 5 μ g/ml, and the phonetic phenol valid density of second is 100 μ g/ml) thin ups, and the control efficiency of 7 days and 15 days is respectively 96.3%, 94.6% behind the medicine.20% metrafenone suspending agent by 2000 times (valid density is 100 μ g/ml) and the phonetic phenol missible oil of 10% second by 1000 times (valid density is 100 μ g/ml), use with same method, 7 days preventive effect is respectively 82.1%, 84.2% behind the medicine, and 15 days preventive effect is respectively 78.9%, 80.2% behind the medicine.The composite rear synergistic effect of the phonetic phenol of metrafenone and second is obvious, to the preventive effect of grape powdery mildew significantly better than single dose.
Embodiment 5:21% metrafenone bupirimate missible oil
Active component, emulsifier and the auxiliary agent ratio in prescription is added in the mixing kettle successively, stir, make 21% metrafenone bupirimate missible oil.
This embodiment apply to Section melon powdery mildew.21% metrafenone bupirimate missible oil is sprayed by 2000 times of (metrafenone valid density is 100 μ g/ml, and bupirimate valid density is 5 μ g/ml) thin ups, and the control efficiency of 7 days and 15 days is respectively 95.3%, 92.6% behind the medicine.30% metrafenone suspending agent by 2000 times (valid density is 150 μ g/ml) and 25% bupirimate missible oil by 2500 times (valid density is 100 μ g/ml), use with same method, 7 days preventive effect is respectively 86.3%, 83.2% behind the medicine, and 15 days preventive effect is respectively 83.4%, 80.2% behind the medicine.The composite rear synergistic effect of metrafenone and bupirimate is obvious, to the preventive effect of joint melon powdery mildew significantly better than single dose.
Embodiment 6:80% metrafenone ethirimol water dispersible granules
Active component, dispersant, wetting agent, disintegrant and the filler ratio in prescription is mixed, become wetting powder through air-flow crushing, add again a certain amount of water mixing extruding and make material.Obtain 80% metrafenone ethirimol water dispersible granules after the drying screening.
This embodiment is applied to prevent and treat the chrysanthemum powdery mildew.With 8000 times of 80% metrafenone ethirimol water dispersible granules (metrafenone valid density is 40 μ g/ml, and the phonetic phenol valid density of second is 60 μ g/ml) thin up spraying, the control efficiency of 7 days and 15 days is respectively 93.3%, 91.1% behind the medicine.50% metrafenone water dispersible granules by 5000 times (valid density is 100 μ g/ml) and 30% ethirimol water dispersible granules by 3000 times (valid density is 100 μ g/ml), use with same method, 7 days preventive effect is respectively 82.1%, 85.6% behind the medicine, and 15 days preventive effect is respectively 79.4%, 82.7% behind the medicine.The composite rear synergistic effect of the phonetic phenol of metrafenone and second is obvious, to the preventive effect of chrysanthemum powdery mildew significantly better than single dose.
Embodiment 7:50% metrafenone bupirimate water dispersible granules
Active component, dispersant, wetting agent, disintegrant and the filler ratio in prescription is mixed, become wetting powder through air-flow crushing, add again a certain amount of water mixing extruding and make material.Obtain 50% metrafenone bupirimate water dispersible granules after the drying screening.
This embodiment is applied to prevent and treat powdery mildew of strawberry.(metrafenone valid density is 50 μ g/ml with 5000 times of 50% metrafenone bupirimate water dispersible granules, bupirimate valid density is 50 μ g/ml) thin up spraying, the control efficiency of 7 days and 15 days is respectively 94.9%, 91.3% behind the medicine.50% metrafenone water dispersible granules by 5000 times (valid density is 100 μ g/ml) and 10% bupirimate suspending agent by 1000 times (valid density is 100 μ g/ml), use with same method, the preventive effect of 7 days and 15 days is respectively 83.5%, 85.4% and 79.6%, 82.3% behind the medicine.The composite rear synergistic effect of metrafenone and bupirimate is obvious, to the preventive effect of powdery mildew of strawberry significantly better than single dose.
Embodiment 8:51% metrafenone ethirimol water dispersible granules
Active component, dispersant, wetting agent, disintegrant and the filler ratio in prescription is mixed, become wetting powder through air-flow crushing, add again a certain amount of water mixing extruding and make material.Obtain 51% metrafenone ethirimol water dispersible granules after the drying screening.
This embodiment is applied to prevent and treat the balsam pear powdery mildew.With 5000 times of 51% metrafenone ethirimol water dispersible granules (metrafenone valid density is 2 μ g/ml, and the phonetic phenol valid density of second is 100 μ g/ml) thin up spraying, the control efficiency of 7 days and 15 days is respectively 95.5%, 93.3% behind the medicine.50% metrafenone water dispersible granules by 5000 times (valid density is 100 μ g/ml) and the phonetic phenol suspending agent of 20% second by 2000 times (valid density is 200 μ g/ml), use with same method, 7 days preventive effect is respectively 80.1%, 83.5% behind the medicine, and 15 days preventive effect is respectively 78.4%, 82.3% behind the medicine.The composite rear synergistic effect of the phonetic phenol of metrafenone and second is obvious, to the preventive effect of balsam pear powdery mildew significantly better than single dose.
Embodiment 9:30% metrafenone bupirimate missible oil
Active component, emulsifier and the auxiliary agent ratio in prescription is added in the mixing kettle successively, stir, make 30% metrafenone bupirimate missible oil.
This embodiment is applied to apple mildew.30% metrafenone bupirimate missible oil is sprayed by 2000 times of (metrafenone valid density is 100 μ g/ml, and bupirimate valid density is 50 μ g/ml) thin ups, and the control efficiency of 7 days and 15 days is respectively 98.2%, 97.3% behind the medicine.30% metrafenone suspending agent by 2000 times (valid density is 150 μ g/ml) and 30% bupirimate missible oil by 2000 times (valid density is 150 μ g/ml), use with same method, 7 days preventive effect is respectively 85.1%, 88.2% behind the medicine, and 15 days preventive effect is respectively 83.9%, 85.4% behind the medicine.The composite rear synergistic effect of metrafenone and bupirimate is obvious, to the preventive effect of apple mildew significantly better than single dose.
Claims (5)
1. bactericidal composition, it is characterized in that: its active ingredient is metrafenone (A) and the phonetic phenol of second or bupirimate (B), and A and B mass ratio are 50: 1-1: 50.
2. bactericidal composition according to claim 1, it is characterized in that: the mass ratio of effective constituents A and B is 20: 1-1: 20.
3. bactericidal composition according to claim 1 and 2, it is characterized in that: the gross mass percentage composition of active ingredient in bactericidal composition is 5%-80%.
4. bactericidal composition according to claim 3, it is characterized in that: the formulation of described bactericidal composition is missible oil, microemulsion, aqueous emulsion, wetting powder, suspending agent or water dispersible granules.
5. bactericidal composition according to claim 1 is characterized in that: described bactericidal composition is used for the powdery mildew of control cucumber, muskmelon, wheat, strawberry, mango, grape, apple and chrysanthemum.
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Application publication date: 20130424 |