CN100539844C - Bactericidal composition for preventing and treating rice blast - Google Patents
Bactericidal composition for preventing and treating rice blast Download PDFInfo
- Publication number
- CN100539844C CN100539844C CNB2007101868948A CN200710186894A CN100539844C CN 100539844 C CN100539844 C CN 100539844C CN B2007101868948 A CNB2007101868948 A CN B2007101868948A CN 200710186894 A CN200710186894 A CN 200710186894A CN 100539844 C CN100539844 C CN 100539844C
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- China
- Prior art keywords
- prochloraz
- composition
- kasugarnycin
- rice blast
- weight portions
- Prior art date
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- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
The invention relates to a bactericidal composition for preventing and treating rice blast, which consists of two active components and a pesticide auxiliary agent, wherein the active component a is kasugamycin, the active component b is prochloraz, and the weight ratio of a to b is 1: 0.05-30, preferably 1: 0.8-20. The bactericidal composition has a control effect on rice blast germs which is obviously higher than the effect of a and b when the bactericidal composition is applied independently, and shows extremely strong bacteriostatic and bactericidal activity. The composition has positive effects on improving the control effect, delaying the fungal resistance and the like, and has protection and treatment effects. The composition is different from other existing pesticide bactericides.
Description
Technical field
The present invention relates to a kind of the have bactericidal composition that improves performance, specifically a kind of microbicide compositions that is used for effectively preventing and treating rice blast.The invention belongs to the agriculture plant protection field.
Technical background
Rice blast is one of main disease of paddy rice, and it is the fungal disease that is caused by imperfect fungus, and the whole growing of paddy rice all can be fallen ill.This disease can betide positions such as leaf, joint, fringe neck, grain respectively, and common have leaf pest and panicle blast, bar pest etc.Rice blast takes place comparatively general in China, takes place serious can cause the rice seedling blade withered, and joint portion folding is short, forms dead ears and blighted grain, and taking place influences very big to rice yield when serious.For this type of disease, using chemical agent is the most effective at present means, Prochloraz, kasugarnycin all are comparatively efficacious agents of this type of disease of control, but actual agricultural chemicals field trial shows, repeat and single-mindedly use a kind of reactive compound and prevent and treat the fast selective that harmful fungoid causes bacterial strain under many circumstances, optionally dangerous for reducing resistant strain, normally used method is that the mixture that filters out the compound of different activities is prevented and treated harmful fungoid.The sterilization mechanism of Prochloraz mainly is by influencing the ergosterol biosynthesis; the function of somatic cells film is damaged; finally cause cell death; kasugarnycin is by disturbing the esterase system of metabolism of amino acid; thereby influence the synthetic of protein, suppress the mycelia elongation and cause cell granulationsization to reach the purpose of sterilization.Make up by the reactive compound that will have the different mechanisms of action, but delaying drug resistance produces reduction amount of application, minimizing control cost.
Summary of the invention
Purpose of the present invention:,, provide a kind of bactericidal composition that has synergistic function for the control rice blast pathogen by kasugarnycin and Prochloraz are made up at the deficiency of existing chemical single chemical control rice blast.Result of the test shows: composition synergistic effect of the present invention is obvious, and the lasting period is long, has reduced spraying times, paddy rice is had protection and prevention effect, and do not have cross resistance between kasugarnycin and the Prochloraz.
Prochloraz (english common name Prochloraz), chemical name (formula I): N-propyl group-N-[2-(2,4, the 6-Trichlorophenoxy) ethyl]-imidazoles-1-formamide
The metal ion that is suitable for Prochloraz metal salt compound of the present invention can be selected in the periodic table of elements first to second excessive family element, the especially manganese, zinc, copper, according to circumstances needs, and metal ion can exist with the various chemical valences that they may present.For example, select the salt compounds of metal ion manganese, that is, and N-propyl group-N-[2-(2,4, the 6-Trichlorophenoxy) ethyl]-1-H-imidazoles-1-formamide-manganese chloride (suc as formula II).
Kasugarnycin (english common name Kasugamycin), chemical name (formula III): (5-ammonia-3-methyl-6-(2,3,4,5, the oxidation of 6-penta hydroxy group cyclohexyl) pyrans-3-yl) amino-2-imino-acetic acid
Concrete scheme of the present invention is: a kind of binary bactericidal composition of preventing and treating rice blast, be made up of following component: the conventional auxiliary agent of kasugarnycin and Prochloraz and agricultural chemicals is formed.
In the composition of the present invention, active component a and b weight ratio are 1: (0.05～30) is preferably 1: (0.8～20).
Mixture of the present invention uses with the form of composition, uses with usual auxiliaries such as other carriers, surfactants usually during use, and these conventional pesticide auxiliary agents all are known in pesticide field.
The percentage by weight of active component kasugarnycin of the present invention and Prochloraz accounts for 5～94% of medicament gross weight.
Composition of the present invention can prepare various formulations with known method: for example with active ingredient and filler, as solvent, solid carrier, can evenly mix, grind with surfactant when needing.
Be suitable for solid carrier of the present invention, as be used for the normally natural minerals filler of wetting powder and water dispersible granules, for example talcum, kaolin, montmorillonite or atlapulgite.For the managing physical performance also can add polymolecularity silicic acid or polymolecularity adsorpting polymerization thing.Suitable granular absorption carrier is a porous type, as float stone, bentonite or bentonite; Suitable non-absorption carrier is for example calcite or sand.In addition, can use being prefabricated into of a large amount of inorganic in nature or organic character granular material, particularly dolomite.
The chemical property of two components according to the present invention, suitable surfactant is a lignin sulfonic acid, naphthalene sulfonic acids, phenolsulfonic acid, the alkali metal salt of dibutyl naphthalene sulfonic acids, alkali salt and amine salt, alkylaryl sulfonates, alkyl sulfate, alkylsulfonate, aliphatic alcohol sulfate, fatty acid and sulphated fatty alcohol glycol ether also have the condensation product of sulfonated naphthalene and naphthalene derivatives and formaldehyde, the condensation product of naphthalene or naphthalene sulfonic acids and phenol and formaldehyde, NONIN HS 240, the ethoxylation isooctylphenol, octyl phenol, nonyl phenol, alkylaryl polyglycol ether, tributyl benzene polyglycol ether, three stearyl phenyl polyglycol ethers, alkyl aryl polyether alcohol, ethoxylated castor oil, polyoxyethylene alkyl ether, the ethylene oxide condensation product, the ethoxylation polyoxypropylene, lauric acid polyglycol ether acetal, sorbitol ester, lignin sulfite waste liquor and methylcellulose.
Composition of the present invention can use with constant form, perhaps preferably in configuration technology normally used additive use, so these compounds can be configured in known manner, for example make wetting powder, water dispersible granules, suspending agent.According to the character that these compositions had, can select as spraying, atomizing according to the purpose that will reach and ambient conditions, broadcast sowing, bold and vigorous application process of watering etc. and so on.
Composition as solid form, having of can mentioning is following several: (content of its active component is generally than higher for water dispersible granules, usually between 30～85 weight portions), normally prepared, made this formulation by the agglomeration of wettable powder type composition in suitable granular system.
Wetting powder is generally with such method preparation, promptly so that its active component that contains 3～94 weight portions be as the criterion, except that solid carrier, they generally contain the wetting agent of 0～7 weight portion, the dispersant of 3～10 weight portions, in case of necessity, one or more other the additive that contains 0～10 weight portion again.As colouring agent, bleeding agent, adhesive or anti-caking agent etc.
Composition as liquid form, can be processed into suspending agent, it can prepare by following method, promptly be as the criterion not form sedimental stable fluid, they generally contain the active component of 4～65 weight portions, 0.5 the surfactant of～45 weight portions, 0～10 weight portion suitable such as dyestuff, colouring agent, foam reducing composition, corrosion inhibitor, the additive of stabilizing agent and bleeding agent and adhesive etc., carrier can be water or organic liquid, active component indissoluble or water fast can be dissolved in some solid organic matter or mineral salt in the liquid to help sedimental formation or as the antifreezing agent of water.
Composition active ingredient amount of application of the present invention is 50～600 gram/hectares normally, preferred 70～550 gram/hectares.
Can use in the composition of the present invention, when using two components jointly, the effect of stack (equaling synergy) occur.The specific activity of this composition is used the activity expection summation of individualized compound, and the independent activity of individualized compound is more remarkable.Synergistic effect allows to show as that amount of application reduces, the action effect instant effect and by only once or minority just use several times and can control rice blast fungus.
Other characteristics that show of bactericidal composition of the present invention mainly show as: 1, composition lasting effect of the present invention is long, in the initial stage dispenser of paddy rice cut once, can effectively control the generation of paddy rice panicle blast, has reduced the medication number of times and has saved labour costs; 2, since medication period of panicle blast usually in the cut phase, use this period other conventional dose (as, tricyclazole) can directly have influence on the quality of paddy rice, comprise mouthfeel, exterior quality of rice etc., and composition of the present invention is few owing to its dosage, and the utilization rate of active components height is residual little, reduced influence to greatest extent, met the needs of pollution-free rice plantation rice quality.3, mechanism of action uniqueness, synergistic effect is remarkable.There is not the cross resistance problem between kasugarnycin and the Prochloraz, has higher synergistic effect by the composite bactericide that forms of the present invention, and the mechanism of action difference between two components, control efficiency improved to rice blast.
Following embodiment and unrestricted the present invention, and be used for just illustrating how the present invention realizes in actual applications.
One, formulation prepares embodiment
1, water dispersible granules
Prochloraz nantokite 30.0 weight portions
Kasugarnycin 3.0 weight portions
Polyvinyl alcohol 5.0 weight portions
Sodium Laurylsulfate 7.0 weight portions
Lignosulfonates 11.0 weight portions
The kaolin surplus
Above-mentioned substance is evenly mixed, grinds, mixes suitable quantity of water and granulation, promptly get said preparation after the drying.
2, water dispersible granules
Prochloraz nantokite 8.0 weight portions
Kasugarnycin 67.0 weight portions
Methylcellulose 4.0 weight portions
Saponin 5.0 weight portions
Polyvinyl alcohol 2.0 weight portions
The kaolin surplus
Above-mentioned raw materials ground in water make required particle diameter, adjust its concentration and viscosity, obtain spraying and use slurry, slurry is quantitatively sent to carried out atomized drying in the drying tower then, obtain this product.
The dilution emulsifying liquid of any concentration that this concentrate of dilute with water can obtain using in the plant protection.
3, wetting powder
Prochloraz-manganese chloride complex 36.0 weight portions
Kasugarnycin 2.0 weight portions
Alkyl polyoxy ethyl ether sulfonate 5.0 weight portions
Sodium lignin sulfonate 4.0 weight portions
NONIN HS 240 (8-9 moles of ethylene oxide) 3.0 weight portions
Kaolin soil surplus
Active ingredient is thoroughly mixed with auxiliary agent, and it is thoroughly ground in suitable mill, and the wetting powder dilutable water that obtains becomes to need the suspension of concentration.
4, suspending agent
Prochloraz 19.0 weight portions
Kasugarnycin 11.0 weight portions
Propane diols 3.0 weight portions
Lignosulfonates 10.0 weight portions
Sodium Polyacrylate 5.0 weight portions
Octyl phenol polyglycol ether (11-14 moles of ethylene oxide) 5.0 weight portions
Water surplus
The active ingredient of grinding is very carefully thoroughly mixed with auxiliary agent, and the suspending agent dilutable water that obtains becomes any suspension that needs concentration.
Two, Application Example
1, utilize 2,3,4 embodiment in the top formulation preparation enforcement that the inhibitory action of Pyricularia oryzae is carried out indoor determination of activity.Growth rate method is adopted in test, earlier each proportioning is made into the series concentration gradient.It is standby the Pyricularia oryzae diameter after secondary separation is cultivated to be that the aseptic card punch of 0.5CM goes out to fan the air in the bacterium colony leading edge, moves then in pastille PDA plating medium earth pot, places in 25 ± 1 ℃ of incubators and cultivates, and cultivates and measures colony diameter after 8 days.Every processing repeats 6 times.Measured result is calculated antibacterial percentage compared with the control.Calculate each composition and contrast the LC of single agent
50Value is calculated co-toxicity coefficient, has judged whether synergistic effect.Criterion be co-toxicity coefficient significantly greater than 100 for synergy, less than 100 be antagonism, equaling 100 is addition.Concentration and co-toxicity coefficient result such as following table in its virulence regression equation, the inhibition:
The composite synergism test of table 1 kasugarnycin and Prochloraz to rice blast
| Pharmacopoeia | Virulence regression equation | LC50(mg/kg) | Co-toxicity coefficient |
| Embodiment 2 (75% water dispersible granules) | Y＝1.35624+2.54724X | 0.217527 | 125.5451 |
| Embodiment 3 (38% wetting powder) | Y＝1.24309+0.85341X | 0.075484 | 219.0342 |
| Embodiment 4 (30% suspending agent) | Y＝0.80259+1.98562X | 0.192584 | 147.7341 |
| 4% kasugarnycin wetting powder | Y＝2.36541+1.35452X | 0.754320 | |
| 50% prochloraz nantokite wetting powder | Y＝1.62132+0.20254X | 0.983992 |
From indoor active interpretation of result as can be seen, embodiment 2,3,4 compositions all greater than 100, show as synergistic effect to the co-toxicity coefficient of rice blast.
2. field control effectiveness test
The field test results for preparing the preparation control rice blast of embodiment 4 with formulation.6 processing are established in test altogether, and every processing is established and repeated contrast for 4 times, and 85 square metres of every sub-districts are converted water spray in the paddy rice full heading time with mist sprayer.The rice blast disease index is respectively handled in investigation in 7 days, 18 days behind the medicine, and calculates relative control efficiency with the disease index of check plot.Result of the test is found, behind the medicine 7 days, 18 days, preventive effect difference with insignificance between 2000 times, 1500 times, 1000 times three concentration of 30% kasugarnycin Prochloraz suspending agent dilution, consider from economic factor, select 2000 times of sprayings best in the practical application, and 30% control during 2000 times of kasugarnycin Prochloraz suspending agent dilutions be significantly higher than the control efficiency of 1500 times of two single dilution agents, illustrate kasugarnycin and Prochloraz composite have obvious synergistic effect and the lasting period longer, result of the test is as follows:
7 days field demonstration tests behind table 2 kasugarnycin and the Prochloraz compound medicine to rice blast
Annotate: data are 4 repetition mean values in the table.
18 days field demonstration tests behind table 3 kasugarnycin and the Prochloraz compound medicine to rice blast
Annotate: data are 4 repetition mean values in the table.
Claims (4)
1. effective bactericidal composition of control rice blast, it is characterized in that containing in the bactericide that kasugarnycin and Prochloraz make as active component, weight ratio between two active components is 1: 0.05～30, and kasugarnycin and Prochloraz accumulating weight account for 5～94% of total formulation weight amount ratio.
2. composition according to claim 1, the percentage by weight that it is characterized in that kasugarnycin and Prochloraz is 1: 0.8～20.
3. composition according to claim 1 is characterized in that described Prochloraz can be the Prochloraz metal salt compound, is selected from prochloraz-manganese chloride complex, prochloraz zinc salt or prochloraz nantokite a kind of compound wherein.
4, composition according to claim 1 is characterized in that the processing formulation of described composition comprises: wetting powder, water dispersible granules, suspending agent.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101843250B (en) * | 2010-06-21 | 2013-04-17 | 陕西上格之路生物科学有限公司 | Agricultural sterilizing compound containing isothiazolin-ketone and kasugamycin |
| CN101971865A (en) * | 2010-10-27 | 2011-02-16 | 陕西韦尔奇作物保护有限公司 | Germicide combination containing kasugamycin and Prochloraz manganese |
| CN102696652A (en) * | 2012-06-29 | 2012-10-03 | 青岛星牌作物科学有限公司 | Sterilizing composite for controlling pyricularia oryzae |
| CN102823612A (en) * | 2012-09-26 | 2012-12-19 | 贵州大学 | Pesticide for controlling pyricularia oryzae |
| CN104222090B (en) * | 2013-07-26 | 2016-03-02 | 海南正业中农高科股份有限公司 | Bactericidal composition containing kasugarnycin and copper 8-hydroxyquinolinate and application |
| CN106305765A (en) * | 2015-06-25 | 2017-01-11 | 牡丹江佰佳信生物科技有限公司 | Fungicidal composition and application thereof |
| CN108477198A (en) * | 2018-04-23 | 2018-09-04 | 温妙云 | Bactericidal composition containing azalomycin F and Prochloraz |
| NL2036426B1 (en) * | 2023-12-05 | 2024-07-30 | Huangdao customs comprehensive technical service center | Bacteriostat for controlling rice blast and control method thereof |
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| CN1742579A (en) * | 2005-09-26 | 2006-03-08 | 田琳 | Agricultural and forestry crop bactericide |
| CN101057586A (en) * | 2006-12-08 | 2007-10-24 | 高鹏 | Bactericide for agricultural and forestry crops (except leguminous plants) |
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| CN101057586A (en) * | 2006-12-08 | 2007-10-24 | 高鹏 | Bactericide for agricultural and forestry crops (except leguminous plants) |
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