CN110199991A - A kind of pesticide sterilizing composite for preventing and treating bakanae disease of rice - Google Patents
A kind of pesticide sterilizing composite for preventing and treating bakanae disease of rice Download PDFInfo
- Publication number
- CN110199991A CN110199991A CN201910454034.0A CN201910454034A CN110199991A CN 110199991 A CN110199991 A CN 110199991A CN 201910454034 A CN201910454034 A CN 201910454034A CN 110199991 A CN110199991 A CN 110199991A
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- CN
- China
- Prior art keywords
- rice
- zoarenone
- demecolcine
- bakanae disease
- preventing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- A01N35/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having two bonds to hetero atoms with at the most one bond to halogen, e.g. aldehyde radical
- A01N35/06—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having two bonds to hetero atoms with at the most one bond to halogen, e.g. aldehyde radical containing keto or thioketo groups as part of a ring, e.g. cyclohexanone, quinone; Derivatives thereof, e.g. ketals
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- Life Sciences & Earth Sciences (AREA)
- Agronomy & Crop Science (AREA)
- Plant Pathology (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Dentistry (AREA)
- General Health & Medical Sciences (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Environmental Sciences (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
- Pretreatment Of Seeds And Plants (AREA)
Abstract
The invention discloses a kind of pesticide sterilizing composites for preventing and treating bakanae disease of rice, including Zoarenone and demecolcine.The present invention under specific ratio by being found to have the effect that collaboration well prevents and treats bakanae disease of rice for Zoarenone and demecolcine compatibility.
Description
Technical field
The present invention relates to a kind of medicament, the pesticide sterilizing composite of specifically a kind of prevention and treatment bakanae disease of rice belongs to agricultural
Technical field.
Background technique
Bakanae disease of rice is also known as excessive growth disease, and each rice region of China has generation.Sick grain does not often germinate or cannot be unearthed after broadcasting.
Falling ill in seedling stage, sick seedling is thinner and taller than strong seedling, and blade leaf sheath is elongated, and leaf color is yellowish, and root system development is bad, and part sick seedling is dead before transplanting
It dies.There are light red or white mould powder, the i.e. conidium of pathogen on withered seedling.When humidity is big, withered diseased plant surface is long
Full filbert or white powder mustiness object, later period raw black dot, that is, germ softgel shell.Sick light ears ahead of time, and fringe shape is small and not firm.
Heading stage grain can also be aggrieved, serious browning, cannot be solid, and the raw pale red of glume crevice place is mould, and disease does not gently show symptom, but
Existing mycelia is latent for inside.
Actual pesticide experience have shown that, repeat and single-minded apply a kind of reactive compound to prevent and treat harmful fungoid very
It will lead to the fast selective of fungal bacterial strain in more situations, it is usual at present for the risk for reducing refractory fungal bacterial strain selectivity
Harmful fungoid is prevented and treated using the mixture of different activities compound.By that will have the reactive compound of different role mechanism
Be combined, can delaying drug resistance generate, reduce amount of application, reduce control cost.Natural active compound is as a kind of emerging
Sterilization and disinsection medicament, especially natural active compound compound the influence for pesticide-germicide, are that current pesticide field emphasis is ground
Study carefully direction.
Compound Zoarenone delivered (Francisco Cen-Pacheco, et al, Zoaramine in 2014
A Zoanthamine-like Alkaloid with a New Skeleton. Organic Letters, 2014,16,
2880-2883.), which possesses completely new framework types, which possesses completely new framework types, yet there are no
, for sterilizing, the report in terms of bakanae disease of rice is especially prevented and treated to about Zoarenone and demecolcine.
Summary of the invention
In view of the above-mentioned problems of the prior art, the purpose of the present invention is to provide the sterilization groups containing Zoarenone
Object is closed, prevention and treatment bakanae disease of rice effect is good.
To achieve the purpose of the present invention, inventor compounds Zoarenone with demecolcine, for preventing and treating crop
Disease.
To achieve the goals above, the technical solution adopted by the present invention is that: one kind include two kinds of principle active components:
Zoarenone and demecolcine, Zoarenone structural formula are as follows:
。
The ratio between the parts by weight of the Zoarenone and demecolcine are 20:1-23:1.
The sum of the weight of the Zoarenone and demecolcine account for the 1-6% of fungicide total weight.
The present invention under specific ratio by being found to have good association for Zoarenone and demecolcine compatibility
It is especially 20:1- in the ratio between parts by weight of Zoarenone and demecolcine with the effect of prevention and treatment bakanae disease of rice
Between 23:1, collaboration prevention and treatment bakanae disease of rice effect is apparent, and toxicity is smaller.
Specific embodiment
The preparation method of compound Zoarenone involved in the present invention is referring to document: Francisco Cen-Pacheco,
et al ,Zoaramine a Zoanthamine-like Alkaloid with a New Skeleton. Organic
Letters, 2014,16,2880-2883.
Demecolcine, No. CAS: 477-30-5.
Embodiment 1:
Effective component Zoarenone and demecolcine, with the customary adjuvants such as lignin, diatomite according to common process, system
The wettable powder for being 2% at effective component concentration.
Embodiment 2:
Effective component Zoarenone and demecolcine, with calcium dodecyl benzene sulfonate, phenethyl phenol polyethenoxy ether, molten
The missible oil that effective constituent concentration is 2% is made according to common process in the customary adjuvants such as agent oil.
Embodiment 3:
Effective component Zoarenone and demecolcine, with the customary adjuvants such as wooden sodium sulfonate, kaolin according to conventional work
The water dispersible granules that effective constituent concentration is 2% are made in skill.
Embodiment 4:
Effective component Zoarenone and demecolcine, with solvent naphtha, pyrrolidones, the customary adjuvants such as xanthan gum are according to normal
The aqueous emulsion that effective constituent concentration is 2% is made in rule technique.
Embodiment 5:
Effective component Zoarenone and demecolcine, with methyl oleate, polyoxyethylene (30) dimerization hydroxy stearic acid rouge etc.
The aqueous emulsion that effective constituent concentration is 2% is made according to common process in customary adjuvant.
Laboratory test:
Subjects: bakanae disease of rice germ
According to the incidence of test grade scale investigation rice, disease index and control efficiency are calculated.Control efficiency is converted
At probability value (y), medical fluid does height (μ g/ml) and is converted into logarithm (x), calculates virulence equation and inhibition with least square method
Middle concentration EC50 calculates the toxicity index grade co-toxicity coefficient (CTC) of medicament according to Sun Yunpei's Method.
Survey toxicity index (ATI)=(standard agent EC50/ reagent agent EC50) * 100
B in the percentage composition+B medicament toxicity index * mixture of A in theoretical toxicity index (TTI)=A medicament toxicity index * mixture
Percentage composition
Co-toxicity coefficient (CTC)=[mixture surveys toxicity index (ATI)/mixtures theoretical toxicity index (TTI)] * 100 CTC≤80,
Composition shows as antagonism, and 80 < CTC < 120, composition shows as summation action, CTC >=120, and composition is shown as
Synergistic effect.
1 Zoarenone of table: demecolcine and its different ratio compounding are to bakanae disease of rice toxicity test result point
Analysis.
A is Zoarenone, and B is demecolcine.
。
By the measurement result of table 1 it is found that as Zoarenone: when demecolcine proportion is between 20:1-23:1, altogether
Malicious coefficient is both significantly higher than 200, has apparent synergistic effect, and other ratios mix, and co-toxicity coefficient is unobvious.
Field efficacy verification test
Test method: it at the initial stage of a disease, carries out for the first time by spraying, carrying out being administered for second after 7 days immediately, each processing is 4 small
Area, each 20 square meter of cell.10 days investigation statistics incidences, 5 points of each cell take at random before medicine and after second of medicine
Sample, 5 plants of crops of every investigation, the lesion area for investigating every blade in whole strain account for percentage and the classification of blade area, calculate disease
Feelings index and control efficiency.
Grade scale:
0 grade: disease-free spot；
1 grade: leaf spot lesion is less than 5, and length is less than 1cm；
3 grades: leaf spot lesion 6-10, part scab length is greater than 1cm；
5 grades: leaf spot lesion 11-25, part scab is linked to be piece, and lesion area accounts for the 10-22% of leaf area；
7 grades: leaf spot lesion 26 or more, scab is linked to be piece, and lesion area accounts for the 26-50% of leaf area；
9 grades: scab is linked to be piece, lesion area account for 50% of leaf area or more or full leaf it is withered.
The field control effectiveness test of embodiment and control group to bakanae disease of rice.
It can be seen that Zoarenone is matched under certain proportion with demecolcine cooperates with prevention and treatment bakanae disease of rice effect very
It is obvious, and single Zoarenone has certain control efficiency, but effect is not significant, single demecolcine
Anti- bakanae disease of rice ability is also ineffective.The ratio between parts by weight of Zoarenone and demecolcine are 20:1-23:1
When synergy it is most significant, and effect is not very significant when other proportions.
Claims (3)
1. a kind of pesticide sterilizing composite for preventing and treating bakanae disease of rice, which is characterized in that include two kinds of principle active components:
Zoarenone and demecolcine, Zoarenone structural formula are as follows:
。
2. it is according to claim 1 it is a kind of prevent and treat bakanae disease of rice pesticide sterilizing composite, the Zoarenone with
The ratio between parts by weight of demecolcine are 1:1-20:1.
3. a kind of pesticide sterilizing composite for preventing and treating bakanae disease of rice according to claim 1, which is characterized in that described
The 1-6% for accounting for fungicide total weight of the weight of Zoarenone and demecolcine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910454034.0A CN110199991A (en) | 2019-05-29 | 2019-05-29 | A kind of pesticide sterilizing composite for preventing and treating bakanae disease of rice |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910454034.0A CN110199991A (en) | 2019-05-29 | 2019-05-29 | A kind of pesticide sterilizing composite for preventing and treating bakanae disease of rice |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110199991A true CN110199991A (en) | 2019-09-06 |
Family
ID=67789173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910454034.0A Withdrawn CN110199991A (en) | 2019-05-29 | 2019-05-29 | A kind of pesticide sterilizing composite for preventing and treating bakanae disease of rice |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110199991A (en) |
-
2019
- 2019-05-29 CN CN201910454034.0A patent/CN110199991A/en not_active Withdrawn
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190906 |
|
| WW01 | Invention patent application withdrawn after publication |