CN117502452B - Synergistic bactericidal composition for preventing and treating jackfruit rot - Google Patents
Synergistic bactericidal composition for preventing and treating jackfruit rotInfo
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- CN117502452B CN117502452B CN202311637299.7A CN202311637299A CN117502452B CN 117502452 B CN117502452 B CN 117502452B CN 202311637299 A CN202311637299 A CN 202311637299A CN 117502452 B CN117502452 B CN 117502452B
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- farnesol
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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
- A01N49/00—Biocides, pest repellants or attractants, or plant growth regulators, containing compounds containing the group, wherein m+n>=1, both X together may also mean —Y— or a direct carbon-to-carbon bond, and the carbon atoms marked with an asterisk are not part of any ring system other than that which may be formed by the atoms X, the carbon atoms in square brackets being part of any acyclic or cyclic structure, or the group, wherein A means a carbon atom or Y, n>=0, and not more than one of these carbon atoms being a member of the same ring system, e.g. juvenile insect hormones or mimics thereof
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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
- A01N43/48—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with two nitrogen atoms as the only ring hetero atoms
- A01N43/56—1,2-Diazoles; Hydrogenated 1,2-diazoles
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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
- A01N43/64—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with three nitrogen atoms as the only ring hetero atoms
- A01N43/647—Triazoles; Hydrogenated triazoles
- A01N43/653—1,2,4-Triazoles; Hydrogenated 1,2,4-triazoles
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01P—BIOCIDAL, PEST REPELLANT, PEST ATTRACTANT OR PLANT GROWTH REGULATORY ACTIVITY OF CHEMICAL COMPOUNDS OR PREPARATIONS
- A01P3/00—Fungicides
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change
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- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Zoology (AREA)
- Pest Control & Pesticides (AREA)
- Plant Pathology (AREA)
- Wood Science & Technology (AREA)
- Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
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- Health & Medical Sciences (AREA)
- Agronomy & Crop Science (AREA)
- Insects & Arthropods (AREA)
- Microbiology (AREA)
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Abstract
本发明涉及农药技术领域，具体涉及一种防治菠萝蜜果腐病的增效杀菌组合物。一种防治菠萝蜜果腐病的增效杀菌组合物，其有效成分由法尼醇与苯并烯氟菌唑复配而成；所述法尼醇与苯并烯氟菌唑的质量比为1‑10：25‑1。本发明在现有农药的基础上，将不同农药有效成分进行复配，筛选出具有增效的组合，可以提高菠萝蜜果腐病的防治效果，有利于减少农药施用剂量，延缓病原菌抗药性的产生。The present invention relates to the field of pesticide technology, and more specifically to a synergistic fungicidal composition for preventing and treating jackfruit fruit rot. The synergistic fungicidal composition for preventing and treating jackfruit fruit rot comprises a compound of farnesol and benzovindiflupyr as active ingredients; the mass ratio of farnesol to benzovindiflupyr is 1-10:25-1. Based on existing pesticides, the present invention compounds different active ingredients of pesticides to screen for synergistic combinations. This can improve the prevention and treatment of jackfruit fruit rot, help reduce the pesticide application dosage, and delay the development of drug resistance in pathogens.
Description
Technical Field
The invention relates to the technical field of pesticides, in particular to a synergistic bactericidal composition for preventing and treating jackfruit rot.
Background
Both aschersonia (Cylindrocladium sp.) and curvularia (l. Thenobromae) and the like can cause jackfruit rot. Among them, the cocoa hair color two spore (l. Theobromae) can be parasitic to more than 500 plants in tropical and subtropical areas, causing various diseases of field crops, vegetables, fruits and woods, mainly including various types of shoot blight, branch blight, root rot, fruit rot, leaf spot, ulcer and gummosis.
The jackfruit cocoa hairy color two-spore fruit rot mainly damages jackfruit male flowers and fruits. When the male flowers are infected, the initially infected parts turn brown and spread around quickly, the whole male flowers are infected by pathogenic bacteria quickly, and the whole male flowers become black and fall off in the later period of attack. Any part of the fruit can be diseased, the disease spots are irregular, the initially infected pericarps turn brown, white hyphae are attached to the surfaces of the fruit, and the initially diseased part turns black brown in the later period of disease, so that the fruit is rotten, and the yield and quality of jackfruit are affected.
At present, chemical agents are one of the more remarkable means for preventing and treating jackfruit rot, but the resistance of pathogenic bacteria of the jackfruit rot to various agents used at present is different degrees due to the unscientific medication modes such as long-term singleness, continuity, repeatability and the like. The unscientific medication mode shortens the generation time of resistance of various medicaments year by year, and greatly increases the prevention and treatment cost, the environmental cost and the medicament research and development cost. Based on the current situation, improving the prevention and treatment effect of the medicine based on the prior art is an economical and effective means for solving the problems.
The compounding of the active ingredients of different pesticides is an effective and rapid way of developing and developing new pesticides and preventing and treating agricultural resistant bacteria at present. After the active ingredients of different pesticides are compounded, three action types, namely additive action, synergistic action and antagonistic action are usually shown. The compound formulation with good synergy can obviously improve the actual control effect and reduce the use amount of pesticides, thereby greatly delaying the generation speed of pathogen resistance, and being an important means for comprehensively controlling diseases.
The inventor discovers that the compound of the farnesol and the sedaxane, the benzovindiflupyr or the cyproconazole in a certain mass ratio range shows a synergistic effect on jackfruit rot, and no report of related compound is found at present.
Disclosure of Invention
The invention aims to provide a synergistic bactericidal composition for preventing and treating jackfruit rot, which is prepared by compounding different pesticide active ingredients on the basis of the existing pesticide, and screening out synergistic combinations, so that the preventing and treating effect of jackfruit rot can be improved, the pesticide application dosage can be reduced, and the generation of pathogenic bacteria drug resistance can be delayed.
In order to achieve the above purpose, the present invention provides the following technical solutions:
The synergistic bactericidal composition for preventing and treating jackfruit rot is prepared by compounding farnesol, cyproconazole, benzovindiflupyr or cyproconazole as effective components.
Preferably, the mass ratio of the farnesol to the cyproconazole is 1-40:2-1.
Preferably, the mass ratio of the farnesol to the benzovindiflupyr is 1-10:25-1.
Preferably, the mass ratio of the farnesol to the cyproconazole is 1-9:5-1.
The invention also aims to provide the application of the bactericidal composition in preventing and treating jackfruit rot.
Compared with the prior art, the invention has the following beneficial effects:
The composition has good synergistic effect after the active ingredient of the famous alcohol and the cyproconazole, the benzovindiflupyr or the cyproconazole are compounded, can improve the control effect of jackfruit rot, is beneficial to reducing the application dosage of pesticides and delaying the generation of drug resistance of pathogenic bacteria.
Detailed Description
The invention will be better understood from the following examples. However, it will be readily appreciated by those skilled in the art that the description of the embodiments is provided for illustration only and should not limit the invention as described in detail in the claims.
Example indoor biological Activity test of Fanniol Complex on jackfruit rot
And (3) selecting a disease fruit in a jackfruit plantation, purifying the disease fruit by a laboratory separation method to obtain the cocoa hair color bisporus (Lasiodiplodia theobromae), and storing the cocoa hair color bisporus on a PDA culture medium.
The test agent comprises 98% of farnesol crude drug (Shanghai Yuan leaf biotechnology Co., ltd.), 96% of penflufen crude drug (Lithospermum candidum crop protection Co., ltd.), 96% of benzovindiflupyr crude drug (Lithospermum candidum crop protection Co., ltd.), 95% of cyproconazole crude drug (Lithospermum candidum mountain biotechnology Co., ltd.)
Test method (refer to "NY/T1156.2-2006 laboratory biological assay criteria for pesticides section 2: petri dish method for inhibiting growth of pathogenic fungi hyphae
1. Dissolving the raw materials with dimethyl sulfoxide, diluting with 0.1% Tween-80 water solution to obtain single-dose mother solution, and setting multiple groups of proportions, wherein each single dose and each group of proportion are provided with 5 gradient mass concentrations.
2. 9ML of the PDA culture medium which is melted in advance is added into a sterile conical flask, 1mL of the liquid medicine is quantitatively sucked from low concentration and high concentration in sequence, and the liquid medicine is respectively added into the conical flask and fully and uniformly shaken. Then, the mixture was poured into 3 dishes having a diameter of 9cm in equal amounts to prepare drug-containing plates of corresponding concentrations, and treatments without drug were set as blank controls, each treatment being repeated 3 times.
3. And (3) taking bacterial cakes with the diameter of 5mm from the bacterial colonies of the colletotrichum gloeosporioides after propagation by using a puncher, inoculating the centers of a medicine-containing flat plate and a blank control flat plate, and culturing in a 28 ℃ constant temperature incubator.
After 4.24 hours, colony diameters were measured by the crisscross method, and the hypha growth inhibition rates of different treatments were calculated. And (3) taking the medicine logarithmic value as an independent variable, taking the mycelium growth inhibition rate value as a dependent variable, analyzing by using DPS software to obtain a virulence regression equation and a virulence EC 50 value of the medicine to target bacteria, and calculating a co-toxicity coefficient (CTC) according to a grand Yunpei method.
D=d 1-D2, wherein D is colony growth diameter, D 1 is colony diameter, D 2 is cake diameter;
I= [ (D 0-Dt)/(D0 ]. Times.100, wherein I is hypha growth inhibition (%), D 0 is blank control colony growth diameter, and D t is medicament-treated colony growth diameter;
Measured virulence index (ATI) = (standard agent EC 50 ≡test agent EC 50) ×100;
Theoretical Toxicity Index (TTI) =a agent toxicity index x percentage of agent toxicity index in mixture + B agent toxicity index x percentage of agent toxicity in mixture;
Co-toxicity coefficient (CTC) = [ actual drug susceptibility index (ATI)/(theoretical drug susceptibility index (TTI) ] x 100.
The co-toxicity coefficient (CTC) is more than or equal to 120 and shows synergistic effect, the co-toxicity coefficient (CTC) is less than or equal to 80 and shows antagonistic effect, and the co-toxicity coefficient (CTC) is 80 and the co-toxicity coefficient (CTC) is less than or equal to 120 and shows additive effect. The experimental results are shown in tables 1-3.
TABLE 1 determination of indoor biological Activity of famous alcohol and Fluozolyl Cycloxafen in combination with jackfruit rot pathogen
| Medicament name and ratio | EC50(mg/L) | ATI | TTI | CTC |
| Farnesol | 18.3491 | 100.0000 | -- | -- |
| Cyproconazole | 1.7283 | 1061.6849 | -- | -- |
| Farnesol 1: cyproconazole 2 | 1.8704 | 981.0254 | 741.1233 | 132.3701 |
| Farnesol 1. Fluoconazole 1. Fluxapyroxad | 2.5511 | 719.2623 | 580.8424 | 123.8309 |
| Farnesol 3. Fluoxazol Cyclofenamid 1 | 3.7088 | 494.7449 | 340.4212 | 145.3332 |
| Farnesol 7: cyproconazole 1 | 6.0529 | 303.1456 | 220.2106 | 137.6617 |
| Farnesol 15: cyproconazole 1 | 4.4881 | 408.8389 | 160.1053 | 255.3563 |
| Farnesol 30. Fluoxazole cyprodinil 1 | 9.8974 | 185.3931 | 131.0221 | 141.4976 |
| Farnesol 40. Fluoxazol Cyclofenamid 1 | 11.5630 | 158.6881 | 123.4557 | 128.5384 |
As shown in Table 1, the co-toxicity coefficients of the famous alcohol and the sedaxane for the jackfruit rot pathogens are 123.8309-255.3563 and are all more than 120 in the mass ratio of 1-40:2-1, and the synergism is shown.
Table 2 determination of indoor biological Activity of farnesol and Benzenofloxacin Complex against jackfruit rot pathogen
| Medicament name and ratio | EC50(mg/L) | ATI | TTI | CTC |
| Farnesol | 18.3491 | 100.0000 | -- | -- |
| Benzovindiflupyr | 10.5042 | 174.6835 | -- | -- |
| Farnesol 1: benzovindiflupyr 25 | 8.8170 | 208.1105 | 171.8110 | 121.1275 |
| Farnesol 1: benzovindiflupyr 15 | 5.0460 | 363.6365 | 170.0157 | 213.8840 |
| Farnesol 1: benzovindiflupyr 7 | 7.1186 | 257.7628 | 165.3480 | 155.8910 |
| Farnesol 1: benzovindiflupyr 3 | 2.8687 | 639.6312 | 156.0126 | 409.9869 |
| Farnesol 1: benzovindiflupyr 1 | 4.0190 | 456.5588 | 137.3417 | 332.4254 |
| Farnesol 3: benzovindiflupyr 1 | 3.4194 | 536.6175 | 118.6709 | 452.1898 |
| Farnesol 7: benzovindiflupyr 1 | 1.4122 | 1299.3273 | 109.3354 | 1188.3863 |
| Farnesol 10: benzovindiflupyr 1 | 10.0151 | 183.2143 | 106.7894 | 171.5660 |
As shown in Table 2, the co-toxicity coefficient of the compound of the farnesol and the benzovindiflupyr to the jackfruit rot pathogen is between 121.1275 and 1188.3863 and is more than 120 in the mass ratio of 1-10:25-1, and the synergistic effect is shown, and particularly when the mass ratio is 7:1, the co-toxicity coefficient reaches 1188.3863, and the synergistic effect is most remarkable.
TABLE 3 determination of indoor biological Activity of Fanniol and cyproconazole in combination with jackfruit rot pathogen
| Medicament name and ratio | EC50(mg/L) | ATI | TTI | CTC |
| Farnesol | 18.3491 | 100.0000 | -- | -- |
| Cyproconazole | 3.1429 | 583.8270 | -- | -- |
| Farnesol 1: cyproconazole 5 | 2.6527 | 691.7141 | 503.1892 | 137.4660 |
| Farnesol 1: cyproconazole 3 | 3.1786 | 577.2699 | 462.8703 | 124.7153 |
| Farnesol 1: cyproconazole 1 | 4.0142 | 457.1048 | 341.9135 | 133.6902 |
| Farnesol 3: cyproconazole 1 | 5.0338 | 364.5179 | 220.9568 | 164.9725 |
| Farnesol 5: cyproconazole 1 | 7.7554 | 236.5977 | 180.6378 | 130.9790 |
| Farnesol 9: cyproconazole 1 | 10.0853 | 181.9391 | 148.3827 | 122.6147 |
As shown in Table 3, in the mass ratio of 1-9:5-1, the co-toxicity coefficients of the compound of the farnesol and the cyproconazole on the jackfruit rot pathogens are 122.6147-164.9725, which are all more than 120, and the synergistic effect is shown.
In conclusion, the active ingredient of the composition disclosed by the invention has a good synergistic effect after being compounded with the pennisetum and the sedaxane, the benzovindiflupyr or the cyproconazole, can improve the control effect of jackfruit rot, is beneficial to reducing the application dosage of pesticides and delaying the generation of drug resistance of pathogenic bacteria.
The foregoing is merely illustrative of the preferred embodiments of this invention and modifications, obvious to those skilled in the art, may be made without departing from the principles of this invention and are within the scope of this invention.
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| CN202311637299.7A CN117502452B (en) | 2022-09-09 | 2022-09-09 | Synergistic bactericidal composition for preventing and treating jackfruit rot |
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