CN113207898B - Bactericide composition for preventing and treating wheat scab - Google Patents
Bactericide composition for preventing and treating wheat scab Download PDFInfo
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- CN113207898B CN113207898B CN202110551623.8A CN202110551623A CN113207898B CN 113207898 B CN113207898 B CN 113207898B CN 202110551623 A CN202110551623 A CN 202110551623A CN 113207898 B CN113207898 B CN 113207898B
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/02—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms
- A01N43/04—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with one hetero atom
- A01N43/14—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with one hetero atom six-membered rings
- A01N43/16—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with one hetero atom six-membered rings with oxygen as the ring hetero atom
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N37/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids
- A01N37/44—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids containing at least one carboxylic group or a thio analogue, or a derivative thereof, and a nitrogen atom attached to the same carbon skeleton by a single or double bond, this nitrogen atom not being a member of a derivative or of a thio analogue of a carboxylic group, e.g. amino-carboxylic acids
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/34—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one nitrogen atom as the only ring hetero atom
- A01N43/40—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one nitrogen atom as the only ring hetero atom six-membered rings
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/90—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having two or more relevant hetero rings, condensed among themselves or with a common carbocyclic ring system
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N55/00—Biocides, pest repellants or attractants, or plant growth regulators, containing organic compounds containing elements other than carbon, hydrogen, halogen, oxygen, nitrogen and sulfur
- A01N55/02—Biocides, pest repellants or attractants, or plant growth regulators, containing organic compounds containing elements other than carbon, hydrogen, halogen, oxygen, nitrogen and sulfur containing metal atoms
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Abstract
The invention relates to the technical field of pesticides, and particularly relates to a bactericide composition for preventing and treating wheat scab. A bactericide composition for preventing and treating wheat scab comprises compound I and compound II as effective components; wherein the compound I is oxalic acid diacetone amine copper, and the compound II is natamycin. After the compound I and the compound II are compounded, the activity of the composition is not simple superposition of the activities of all components, but has good synergistic effect, so that the control effect on wheat scab can be obviously improved, the dosage is reduced, and the control cost is reduced.
Description
Technical Field
The invention relates to the technical field of pesticides, and particularly relates to a bactericide composition for preventing and treating wheat scab.
Background
The copper preparation is one of the oldest types of agricultural bactericides, can mainly rapidly destroy protease of pathogenic bacteria to kill the pathogenic bacteria and prevent growth and germination of spores, has the advantages of wide antibacterial spectrum, difficult generation of drug resistance and the like, has high percentage content of copper in the traditional inorganic copper preparation, and can increase the accumulation of copper in soil after long-term mass use. When the copper content in the soil exceeds a certain limit, the normal growth of plants is adversely affected. Besides inorganic copper preparations, organic copper preparations also have low copper content, are safer to crops and are more pollution-free. The bactericidal active ingredient diacetonamine separated from the Qinling streptomycete fermentation liquor is used as a raw material in pesticide research of northwest agriculture and forestry science and technology university, and is modified into a novel complex diacetonamine oxalate copper by modifying the structure of the diacetonamine. Indoor activity determination shows that the oxalic acid diacetonamine copper exhibits good biological activity on various agricultural pathogenic fungi and bacteria, but the control effect on wheat scab is not ideal.
Fluazinam is a 2, 6-dinitroaniline compound, is a protective bactericide, and has the action mechanism that the fluazinam acts on ATP synthetase to release the association of oxidation and phosphorylation at the tail end of a respiratory chain, thereby consuming electrochemical potential energy accumulated by electron transfer to the maximum extent.
Validamycin is an antibiotic produced by actinomycetes, has strong systemic property, is easily absorbed by thallus cells and quickly conducts in the thallus cells to interfere and inhibit the growth and development of the thallus cells, thereby playing a role in sterilization.
Natamycin is a white to milky odorless and tasteless crystalline powder produced by controlled fermentation of Streptomyces natalis, usually in its enol form. The mechanism of action is to bind the ergosterol and other sterol groups of the fungus, blocking ergosterol biosynthesis, thereby distorting the cell membrane and eventually leading to leakage and cell death.
Cyanostrobin is a novel bactericide independently created by Limited companies of pesticide research institute of Jiangsu province, has the advantages of high efficiency, micro toxicity, broad spectrum, low residue and environmental friendliness, has the protection and treatment effects, can effectively inhibit the growth of fusarium hyphae, influences the germination speed of conidia, and enables the germ tubes to be deformed after the spores germinate and not to be split into mycelia.
Wheat is the most important crop for grain cultivation in the world and also is an important food crop in China. Important fungal diseases threatening wheat production during gibberellic disease, powdery mildew, banded sclerotial blight, rust disease and leaf blight, especially wheat scab can cause destructive loss to the yield of wheat, and the current medicament control is the key for reducing the occurrence degree of wheat scab. In the control of drugs, how to slow down the generation of resistance is a problem which needs to be considered, and the commonly adopted method is to compound two or more active ingredients with different action mechanisms. The inventor discovers through a large number of long-term experiments that the compound preparation has obvious synergistic effect by compounding the diacetonamine oxalate with different action mechanisms with any one of fluazinam, validamycin, natamycin and phenamacril, can obviously improve the control effect, reduce the dosage and reduce the control cost, and is safe to crops.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Disclosure of Invention
The invention aims to provide a bactericide composition for preventing and treating wheat scab, which can overcome the problem that the effect of singly using the diacetonamine oxalate copper on preventing and treating the wheat scab is not ideal; meanwhile, the composition can also delay the drug resistance of wheat scab pathogenic bacteria to fluazinam, validamycin, natamycin or phenamacril.
In order to achieve the purpose, the technical scheme provided by the invention is as follows:
a bactericide composition for preventing and treating wheat scab comprises compound I and compound II as effective components; wherein the compound I is oxalic acid diacetone amine copper, and the compound II is natamycin.
Preferably, the mass ratio of the natamycin to the copper diacetonamine oxalate is 1-25: 10-1.
Compared with the prior art, the invention has the following beneficial effects:
(1) the composition disclosed by the invention is prepared by compounding the compound I and the compound II which have different action mechanisms, the activity of the composition is not the simple superposition of the activities of all components, but no cross resistance exists between the compounded effective components, the composition has a good synergistic interaction effect, and compared with a single agent, the composition can be used for remarkably improving the control effect on wheat scab, reducing the dosage and reducing the control cost.
(2) The compound I and the compound II in the composition have different action mechanisms, can effectively slow down the generation of drug resistance of wheat scab pathogenic bacteria, reduce the drug resistance risk brought by the independent use of the compound I and the compound II, and can play a certain role in protecting the compound I and the compound II to a certain extent.
Detailed Description
The following detailed description of specific embodiments of the invention is provided, but it should be understood that the scope of the invention is not limited to the specific embodiments.
Throughout the specification and claims, unless explicitly stated otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.
Examples: indoor bioactivity test after fluazinam compounding
1. Test images were: wheat scab germs harvested from the field;
2. reagent to be tested: 95% diacetonamine oxalate copper (from laboratory), 98% fluazinam (commercially available), 99% validamycin (commercially available), 95% natamycin (commercially available) and 95% phenamacril (commercially available)
3. Preparing a medicament: dissolving the raw materials with acetone, diluting with 0.1% Tween-80, respectively preparing single-dose mother liquor, setting multiple groups of ratios, and setting 5-6 gradient mass concentrations of each single dose and each group of mixture according to equal ratio method;
4. medicament treatment: firstly, 9mL of pre-melted PDA culture medium is added into a sterile conical flask under the aseptic condition, 1mL of liquid medicine is sequentially and quantitatively absorbed from low concentration to high concentration, and the liquid medicine is respectively added into the conical flasks and fully shaken. Then, the mixture was poured into 4 dishes 9cm in diameter in equal amounts to prepare drug-containing plates, and blank controls containing only ethanol and 0.1% Tween-80 were added to the plates, and 3 treatments were repeated for each treatment.
5. Inoculating and culturing: under the aseptic condition, punching holes on the edges of bacterial colonies of wheat scab pathogenic bacteria by using a sterilization puncher with the diameter of 4mm to prepare a bacterial cake with the diameter of 4 mm; inoculating the fungus cake in the center of the medicated plate with the hypha facing upwards, covering with a dish, and culturing at 25 deg.C in an incubator.
6. Investigation and analysis: when the diameter of the blank control colony is more than 2/3 of the diameter of the culture dish, measuring the diameter of the colony by using a caliper, vertically measuring the diameter of each colony by using a cross method once, taking the average value, calculating the hypha growth inhibition rate of each treatment, performing regression analysis on the logarithm value of the medicament concentration and the hypha growth inhibition rate value by using DPS software, calculating the EC50 of each treatment medicament, and calculating the cotoxicity coefficient (CTC value) of the mixture according to the Sun Tapei method.
Colony growth diameter ═ D1-D2，D1Diameter of colony, D2The cake diameter (in this example, the cake diameter is 4 mm);
the hypha growth inhibition ratio (%) [ (D)0-Dt)/D0]×100，D0Growing the diameter of the colony for the blank control; dtGrowing the diameter of the bacterial colony for medicament treatment;
the actually measured virulence index (ATI) ═ (standard agent EC 50/test agent EC50) × 100;
theoretical virulence index (TTI) ═ a agent virulence index × percentage of a in the mixture + B agent virulence index × percentage of B in the mixture;
co-toxicity coefficient (CTC) × 100 [ measured toxicity index (ATI) of the mixture)/Theoretical Toxicity Index (TTI) of the mixture ].
Criteria are divided according to joint action: the co-toxicity coefficient (CTC) is more than or equal to 120 and shows a synergistic effect; the co-toxicity coefficient (CTC) is less than or equal to 80, and the antagonism is shown; 80< co-toxicity coefficient (CTC) <120 showed additive effect. The results are shown in tables 1-4.
TABLE 1 indoor bioactivity assay of fluazinam and copper diacetonamine oxalate combinations against wheat scab pathogens
As can be seen from Table 1, the mass ratio of fluazinam to copper diacetonamine oxalate is 1-30: the cotoxicity coefficients within the range of 15-1 are all larger than 120, namely the synergistic effect is shown on the biological activity of wheat scab pathogen after the fluazinam and the copper diacetonamine oxalate are compounded.
TABLE 2 indoor determination of bioactivity of Validamycin and copper diacetonamine oxalate combinations against wheat scab pathogens
As can be seen from Table 2, the mass ratio of validamycin to copper diacetonamine oxalate is 1-15: the cotoxicity coefficients within the range of 9-1 are all larger than 120, namely the biological activity of the compound of validamycin and copper diacetonamine oxalate on wheat scab bacteria shows synergistic effect.
TABLE 3 indoor bioactivity assay of natamycin and copper diacetonamine oxalate complex for wheat scab pathogen
| Name and proportion of the medicament | EC50(mg/L) | ATI | TTI | CTC |
| Natamycin | 4.611 | -- | 100.000 | -- |
| Diacetonamine copper oxalate | 926.763 | -- | 0.498 | -- |
| Natamycin 1: oxalic acid diacetonamine copper 10 | 31.182 | 14.787 | 9.543 | 154.952 |
| Natamycin 1: oxalic acid diacetonamine copper 8 | 27.866 | 16.547 | 11.553 | 143.223 |
| Natamycin 1: oxalic acid diacetonamine copper 6 | 23.187 | 19.886 | 14.712 | 135.168 |
| Natamycin 1: oxalic acid diacetonamine copper 4 | 14.405 | 32.010 | 20.398 | 156.926 |
| Natamycin 1: oxalic acid diacetonamine copper 2 | 6.282 | 73.400 | 33.665 | 218.031 |
| Natamycin 1: oxalic acid diacetonamine copper 1 | 5.763 | 80.010 | 50.249 | 159.229 |
| Natamycin 5: oxalic acid diacetonamine copper 1 | 3.041 | 151.628 | 83.416 | 181.772 |
| Natamycin 10: oxalic acid diacetonamine copper 1 | 2.473 | 186.454 | 90.954 | 204.997 |
| Natamycin 15: oxalic acid diacetonamine copper 1 | 1.734 | 265.917 | 93.781 | 283.551 |
| Natamycin 20: oxalic acid diacetonamine copper 1 | 1.041 | 442.939 | 95.262 | 464.971 |
| Natamycin 25: oxalic acid diacetonamine copper 1 | 2.052 | 224.708 | 96.173 | 233.649 |
As can be seen from Table 3, the mass ratio of natamycin to copper diacetonamine oxalate is 1-25: the cotoxicity coefficients within the range of 10-1 are all larger than 120, namely the biological activity of the composition of the natamycin and the copper diacetonamine oxalate on wheat scab germs shows synergistic effect.
TABLE 4 indoor bioactivity assay of fluazinam and copper diacetonamine oxalate combinations against wheat scab pathogens
| Name and proportion of the medicament | EC50(mg/L) | ATI | TTI | CTC |
| Cyanostrobin | 0.206 | -- | 100.000 | -- |
| Diacetonamine copper oxalate | 926.763 | -- | 0.022 | -- |
| Cyanostrobin 1: oxalic acid diacetonamine copper 9 | 1.241 | 16.600 | 1.241 | 165.664 |
| Cyanostrobin 2: oxalic acid diacetonamine copper 8 | 0.764 | 26.963 | 0.764 | 134.697 |
| Cyanostrobin 3: oxalic acid diacetonamine copper 7 | 0.341 | 60.411 | 0.341 | 201.264 |
| Cyanostrobin 4: oxalic acid diacetonamine copper 6 | 0.172 | 119.767 | 0.172 | 299.319 |
| Cyanostrobin 5: oxalic acid diacetonamine copper 5 | 0.293 | 70.307 | 0.293 | 140.583 |
| Cyanostrobin 6: oxalic acid diacetonamine copper 4 | 0.167 | 123.353 | 0.167 | 205.558 |
| Cyanostrobin 7: oxalic acid diacetonamine copper 3 | 0.094 | 219.149 | 0.094 | 313.040 |
| Cyanostrobin 8: oxalic acid diacetonamine copper 2 | 0.177 | 116.384 | 0.177 | 145.472 |
| Cyanostrobin 9: oxalic acid diacetonamine copper 1 | 0.139 | 148.201 | 0.139 | 164.664 |
As can be seen from Table 4, the mass ratio of the cyanamide to the copper diacetonamine oxalate is 1-9: the cotoxicity coefficients within the range of 9-1 are all larger than 120, namely the biological activity of the composition to wheat scab pathogen shows synergistic effect after the composition of the cyantraniliprole and the copper diacetonamine oxalate.
In conclusion, when any active ingredient of diacetonamine oxalate and fluazinam, validamycin, natamycin and phenamacril with different action mechanisms is compounded according to a certain mass ratio, the composition has a remarkable synergistic effect, can remarkably improve the control effect, can reduce the dosage and further reduce the control cost.
The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.
Claims (1)
1. The bactericide composition for preventing and treating wheat scab is characterized in that the active ingredient of the bactericide composition is compounded by a compound I and a compound II; wherein the compound I is oxalic acid diacetone amine copper, and the compound II is natamycin; the mass ratio of the natamycin to the copper diacetonamine oxalate is 1-25: 10-1.
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| CN202110551623.8A Active CN113207898B (en) | 2020-01-08 | 2020-01-08 | Bactericide composition for preventing and treating wheat scab |
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| CN101456873B (en) * | 2007-12-14 | 2012-05-30 | 西北农林科技大学农药研究所 | Agricultural bactericidal agent |
| CN101768175B (en) * | 2008-12-31 | 2011-08-10 | 西北农林科技大学农药研究所 | Agricultural fungicide of oxalic acid copper diacetonamine |
| CN104206407B (en) * | 2014-09-05 | 2016-05-11 | 陕西上格之路生物科学有限公司 | A kind of bactericidal composition containing oxalic acid copper diacetonamine |
| CN104255740B (en) * | 2014-09-26 | 2016-09-07 | 陕西上格之路生物科学有限公司 | A kind of containing oxalic acid copper diacetonamine with the bactericidal composition of triazole bactericidal agent |
| CN105284888B (en) * | 2014-11-06 | 2018-03-27 | 陕西上格之路生物科学有限公司 | A kind of bactericidal composition containing oxalic acid copper diacetonamine |
| CN104430490B (en) * | 2014-11-12 | 2016-06-22 | 陕西上格之路生物科学有限公司 | A kind of bactericidal composition containing oxalic acid copper diacetonamine |
| CN105815331A (en) * | 2014-11-12 | 2016-08-03 | 陕西上格之路生物科学有限公司 | Bactericidal composition containing diacetonamine oxalate-copper |
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