CN104488891A - Powdery mildew control sterilization composition - Google Patents
Powdery mildew control sterilization composition Download PDFInfo
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- CN104488891A CN104488891A CN201410686486.9A CN201410686486A CN104488891A CN 104488891 A CN104488891 A CN 104488891A CN 201410686486 A CN201410686486 A CN 201410686486A CN 104488891 A CN104488891 A CN 104488891A
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- benziothiazolinone
- powdery mildew
- fluoxastrobin
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Abstract
The invention discloses a powdery mildew control sterilization composition, the weight ratio of effective components of azoxystrobin: benziothiazolinone is 20:1-1:20, the powdery mildew control sterilization composition is prepared by compounding azoxystrobin and the benziothiazolinone, and can be used for control of powdery mildew of melons, cereal crops and other agricultural products.
Description
Technical field
The invention belongs to the technical field of agriculture chemical compounding, be specifically related to a kind of bactericidal composition preventing and treating powdery mildew.
Background technology
Plant pathogenic fungi powdery mildew is absolute specialization bacterial parasite, and the green portion plant after infecting plant is expanded, and its breeding body surface life forms white powder layer in plant outside, except absorption plant nutrition, also affects the photosynthesis of plant, causes plant weak or dead.Control agriculturally produces the powdery mildew of resistance, a kind of way be release new for the new component of existing kind without cross resistance, but the development cost of new active ingredient is high, and the construction cycle is long, and forever all less than the speed of germ generation resistance.Additive method, as crop structure adjustment, different agricultural chemicals rotations etc., in practical operation, is difficult to really play obvious effect.
Fluoxastrobin (Azoxystrobin) is a kind of new and effective beta-methoxy acrylic ester bactericide; there is protection, treat, root out, permeate, systemic activity, destroy the energy synthesis of germ and loss of life power by suppressing the respiration of germ.Fluoxastrobin has the bactericidal activity of wide spectrum, good activity is all had to nearly all Mycophytes (Ascomycetes, Basidiomycetes, Oomycete and Fungi Imperfecti) disease such as the tens of kinds of diseases such as powdery mildew, rust, scab, net blotch, downy mildew, rice blast, be applicable to the various crop such as cereal, vegetables, paddy rice, fruit tree and economic crops, and there is good crop safety and very outstanding Environmental compatibility.Because its drug cost is high, the application of this medicine is subject to certain restrictions, and uses not extensive, cause the waste to outstanding resource, the action site of this bactericide is very single in addition, and germ can produce adaptive variation to medicament, makes the preventive effect of medicament reduce even invalid and cause the drug-fast generation of germ, in follow-up use, need to strengthen dosage, increase spray medicine number of times, residue of pesticide are improved, affect environment etc., thus cause a series of vicious circle.The resistance of Fluoxastrobin not yet finds in field at present, but has the relevant report producing resistance in Europe with veriety.
Benziothiazolinone (benziothiazolinone) chemical name 1,2 benzisothiazole-3-ketones, benziothiazolinone is a kind of novel, wide-spectrum bactericide, is mainly used in various bacteria, the fungal disease of preventing and treating and treating cucumber downy mildew, pear scab, apple scab, citrus anthracnose, anthracnose of grape etc.Its bactericidal action mechanism, mainly comprises and destroys germ nuclear structures, makes it lose the metabolism of cardia and exhaustion death and interference germ cell, makes its physiologic derangement, finally cause dead two aspects.
The composition of different cultivars carries out composite, is the common solution preventing and treating resistance germ, according to practical application effect, judge certain composite be synergy, addition or antagonism.Composite effect is well filled a prescription, and owing to significantly improving actual control efficiency, reduces the usage amount of agricultural chemicals, thus has greatly delayed the drug-fast generation of germ, is the important means of integrated control disease.
Summary of the invention
Object of the present invention is exactly provide a kind of bactericidal composition preventing and treating powdery mildew for above-mentioned Problems existing, said composition is the combination sterilization composition containing Fluoxastrobin and benziothiazolinone, be used for preventing and treating the powdery mildew agriculturally such as melon, cereal crop, can control efficiency be significantly improved, and have good effect to the pesticide resistance overcome and delay pathogen.
In the present invention, involved weight, the such as weight of Fluoxastrobin, benziothiazolinone, active ingredient, all refer to the weight after folding hundred, i.e. the weight of active principle.
Described a kind of bactericidal composition preventing and treating powdery mildew, active ingredient according to weight ratio is, Fluoxastrobin: benziothiazolinone=20:1 ~ 1:20.
As preferably, described Fluoxastrobin and benziothiazolinone weight ratio be, Fluoxastrobin: benziothiazolinone=5:1 ~ 1:5.
In composition of the present invention, the weight percentage of active ingredient described in it is 1% ~ 80%.
The formulation of said composition comprises suspending agent or water dispersible granules, and described composition adds auxiliary agent and excipient, and the production technology all known according to those skilled in the art makes required formulation.
Beneficial effect of the present invention is: by Fluoxastrobin and the composite use of benziothiazolinone, both show good synergistic effect in certain ratio range, compared with single dose, significantly improve bactericidal effect, control powdery mildew is agriculturally had a significant effect, and, two kinds of active material configuration differences in composition are larger, there is not cross resistance, mixture uses the resistance that effectively can delay single dose to occur and development, has good effect to the resistance overcome and delay pathogen.
The composite mixture of Fluoxastrobin and benziothiazolinone different ratio is determined to the indoor virulence of Powdery Mildew at indoor employing seedling pot-culture method.Namely at greenhouse pot culture cucumber seedling to the 2-3 leaf phase, foliar spray process is carried out by designer drug agent dose, inoculation test pathogen after 24 hours, and moisturizing is cultivated in incubator, the investigation result when the blank of not dispenser is fully fallen ill, disease scale, preventive effect computational methods are all with reference to the People's Republic of China (PRC) [pesticide field efficacy medicine test criterion].Statistical analysis is carried out with DPS data processing software, calculate the EC50 of each medicament, adopt the abundant method of Sun Yun to calculate co-toxicity coefficient (CTC) and evaluate mixed effect, when CTC value is greater than 120, mixture has synergistic effect, are antagonisms when being less than 80, time between 80 ~ 120, there is summation action.
The EC50*100 of the EC50/B agent of toxicity index TI (B)=standard agent A
The EC50*100 of the EC50/AB of actual toxicity index ATI (AB)=A
Theoretical toxicity index TTI (AB)=percentage+TI (B) the * B percentage in mixture of TI (A) * A in mixture
Co-toxicity coefficient CTC=ATI (AB)/TTI (AB) * 100
Result of the test is as follows:
Table one: Fluoxastrobin and benziothiazolinone list mixture are to the toxicity test of cucumber powdery mildew's pathogen
| Reagent agent | Active ingredient weight ratio | EC50(mg/L) | Co-toxicity coefficient (CTC) |
| Fluoxastrobin | —— | 1.59 | —— |
| Benziothiazolinone | —— | 1.18 | —— |
| Fluoxastrobin: benziothiazolinone | 20：1 | 1.16 | 165.3 |
| Fluoxastrobin: benziothiazolinone | 10：1 | 1.09 | 178.6 |
| Fluoxastrobin: benziothiazolinone | 5：1 | 0.74 | 221.6 |
| Fluoxastrobin: benziothiazolinone | 1：1 | 0.71 | 239.3 |
| Fluoxastrobin: benziothiazolinone | 1：5 | 0.69 | 219.7 |
| Fluoxastrobin: benziothiazolinone | 1：10 | 0.93 | 176.9 |
| Fluoxastrobin: benziothiazolinone | 1：20 | 1.07 | 168.6 |
From table one, Fluoxastrobin and benziothiazolinone composite, to cucumber powdery mildew's pathogen, there is good indoor virulence, the CTC value of seven proportionings is all more than 120, show that these two bactericide have good synergistic function under this proportioning, also can find out that mixed ratio synergy between 5:1 ~ 1:5 is particularly remarkable in the composition along with Fluoxastrobin is also different from its synergistic effects different of benziothiazolinone ratio simultaneously.
When Fluoxastrobin and benziothiazolinone carry out combine experiment with aforementioned proportion, show the antibacterial rule identical with benziothiazolinone, comparatively obvious to the synergistic effect of cucumber powdery mildew's pathogen under the ratio of 5:1 ~ 1:5.
Embodiment
Be described further below in conjunction with the combination sterilization composition of specific embodiment to Fluoxastrobin of the present invention and benziothiazolinone, but the present invention is not limited thereto, the formulation preparation method in embodiment is conventional method.
Embodiment one:
The bactericidal composition of 6% Fluoxastrobin benziothiazolinone, comprises following component by weight:
Above-mentioned active component, dispersant, wetting agent, disintegrant and the filler ratio in formula is mixed, wetting powder is become through air-flow crushing, add a certain amount of water mixing extruder grain again, after drying screening, obtain the bactericidal composition of 6% Fluoxastrobin benziothiazolinone.
Embodiment two:
The bactericidal composition of 20% Fluoxastrobin benziothiazolinone, comprises following component by weight:
Above-mentioned active component, dispersant, wetting agent, disintegrant and the filler ratio in formula is mixed, wetting powder is become through air-flow crushing, add a certain amount of water mixing extruder grain again, after drying screening, obtain the bactericidal composition of 20% Fluoxastrobin benziothiazolinone.
Embodiment three:
The bactericidal composition of 30% Fluoxastrobin benziothiazolinone, comprises following component by weight:
Above-mentioned active component, dispersant, wetting agent, disintegrant and the filler ratio in formula is mixed, wetting powder is become through air-flow crushing, add a certain amount of water mixing extruder grain again, after drying screening, obtain the bactericidal composition of 30% Fluoxastrobin benziothiazolinone.
Test example one:
To the test of pesticide effectiveness of the medicament test control grape powdery mildew of above-described embodiment
Several mixtures embodiment of the present invention obtained carry out the test of pesticide effectiveness, adopt greenhouse cuttage grape seedling, measure Fluoxastrobin with the single mixture with benziothiazolinone to the control efficiency of grape powdery mildew.When grape seedling grows to 3 ~ 4 leaves, select the blade of growing way uniformity to adopt manual sprayer to carry out foliar spray process, inoculate pathogen after 24 hours, 7d " Invest, Then Investigate " result is cultivated in moisturizing, the results are shown in Table 2.
Table two: Fluoxastrobin and benziothiazolinone list mixture are to the control efficiency of grape powdery mildew
| Reagent agent | Extension rate | Disease index | Control efficiency (%) |
| Embodiment one product | 1000 | 18.1 | 83.0 |
| Embodiment two product | 1000 | 14.6 | 86.3 |
| Embodiment three products | 1000 | 19.2 | 81.2 |
| 25% Fluoxastrobin SC | 1000 | 23.9 | 72.3 |
| 5% benziothiazolinone SC | 1000 | 25.3 | 69.6 |
| Clear water contrasts | —— | 75.9 | —— |
As can be seen from Table II, the mixture preparation of Fluoxastrobin and benziothiazolinone or benziothiazolinone effectively can prevent and treat grape powdery mildew, and is better than the control efficiency of single dose, significant difference.
As can be seen from the above embodiments, the present invention has good control efficiency to agriculture powdery mildew, thus reduces medicament usage amount, while reducing drug cost, reduces the influence degree to environment.
In addition, be to be understood that, although this specification is described according to embodiment, but not each embodiment only comprises an independently technical scheme, this narrating mode of specification is only for clarity sake, those skilled in the art should by specification integrally, and the technical scheme in each embodiment also through appropriately combined, can form other embodiments that it will be appreciated by those skilled in the art that.
Claims (4)
1. prevent and treat a bactericidal composition for powdery mildew, active ingredient according to weight ratio is, Fluoxastrobin: benziothiazolinone=20:1 ~ 1:20.
2. a kind of bactericidal composition preventing and treating powdery mildew according to claim 1, is characterized in that, described Fluoxastrobin and benziothiazolinone weight ratio be, Fluoxastrobin: benziothiazolinone=5:1 ~ 1:5.
3. a kind of bactericidal composition preventing and treating powdery mildew according to claim 1 and 2, is characterized in that, the weight percentage of described active ingredient is 1% ~ 80%.
4. a kind of bactericidal composition preventing and treating powdery mildew according to claim 1, is characterized in that, the formulation of said composition comprises suspending agent or water dispersible granules.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410686486.9A CN104488891A (en) | 2014-11-25 | 2014-11-25 | Powdery mildew control sterilization composition |
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| CN201410686486.9A CN104488891A (en) | 2014-11-25 | 2014-11-25 | Powdery mildew control sterilization composition |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106259370A (en) * | 2016-08-01 | 2017-01-04 | 江苏辉丰农化股份有限公司 | A kind of microbicide compositions |
| CN106561676A (en) * | 2016-11-10 | 2017-04-19 | 江苏辉丰农化股份有限公司 | Bactericide composition containing benzisothiazolones and coumoxystrobin |
-
2014
- 2014-11-25 CN CN201410686486.9A patent/CN104488891A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106259370A (en) * | 2016-08-01 | 2017-01-04 | 江苏辉丰农化股份有限公司 | A kind of microbicide compositions |
| CN106561676A (en) * | 2016-11-10 | 2017-04-19 | 江苏辉丰农化股份有限公司 | Bactericide composition containing benzisothiazolones and coumoxystrobin |
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