CN102007908A - Botanical fungicide for preventing and curing powdery mildew of crops - Google Patents
Botanical fungicide for preventing and curing powdery mildew of crops Download PDFInfo
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- CN102007908A CN102007908A CN2010105859545A CN201010585954A CN102007908A CN 102007908 A CN102007908 A CN 102007908A CN 2010105859545 A CN2010105859545 A CN 2010105859545A CN 201010585954 A CN201010585954 A CN 201010585954A CN 102007908 A CN102007908 A CN 102007908A
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- osthole
- ethyl ethylthio
- powdery mildew
- ethylthio sulfonate
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Abstract
The invention belongs to the technical field of agricultural chemicals, relating to a botanical fungicide composition for preventing and curing powdery mildew of crops. The botanical fungicide for preventing and curing the powdery mildew of the crops comprises effective ingredients of: cnidium lactone and ethylicin according to a mass ratio of 1: 20 to 1: 5. The botanical fungicide has the following advantages: 1, the cnidium lactone is compounded with the ethylicin to generate excellent synergistic effect, prevent drug resistance caused by the long-term use of single preparation and prolong the duration of preparation; 2, the use amount and the use cost are reduced; 3, the botanical fungicide fore preventing and curing the powdery mildew of the crops improves curing effect and has good preventing and curing effect to various diseases; and 4, the rational combination of botanical cnidium lactone and botanical biomimic farm checmial ethylicin is low in toxin, no pollution and safe to the environment.
Description
Technical field
The invention belongs to technical field of pesticide, relate to a kind of plant resource bactericidal composition of preventing and treating crop powdery mildew.
Background technology
Osthole (osthole), chemical name are 8-(3-methyl-2-butene base) methyl ether umbellate form ketone.It is Main Ingredients and Appearance in the umbellate form flower section plant frutus cnidii, also be root, the rhizome of Imperatoria ostruthium, circle Radix Angelicae Sinensis, Angelica pubescens, bolt wing celery, the active component that extracts in the acrial part of the anistree Chinese wampee root skin of rutaceae, single leaf rue etc. is the wild medical material of China's wide material sources.Medically have anticancer, antimutagenesis, the killing pests and suppressing bacteria report has been arranged on agricultural.
S-Ethyl ethylthio sulfonate, other Chineses: antibacterial agent 402, english common name: ethylicin, chemical name: O-Ethyl ethanesulfonothioate, molecular formula: C4H1002S2.S-Ethyl ethylthio sulfonate is China's initiative pesticide new variety, and cost and price is compared cheap with other bactericide.Being a kind of plant resource bionic pesticide, is the ethyl homologue of edible garlic extract allicin.Its bactericidal mechanism is to contain in (S-S=O=O) group and the thalline molecule in its molecular structure-substance reaction of SH base, thereby suppresses the thalline eubolism; Plant growing had spread effect.
At present for the control of crop powdery mildew, mainly adopt chemical bactericide, present chemical bactericide such as triazolone, nitrile bacterium azoles, thiophanate-methyl, carbendazim, polyoxin etc. have produced in various degree pesticide resistance to crop pest.It is reported that tomato white powder germ is to the highest having reached more than 50% of pesticide resistance of triazolone, powdery mildew of strawberry also reaches about 60% the pesticide resistance of thiophanate-methyl.Feasible, reagent cost height poor to the control efficiency of crop powdery mildew.
Summary of the invention
Technical problem to be solved by this invention is, provide a kind of can substitute the traditional chemical bactericide, to the control efficiency of crop powdery mildew good be the botanical fungicide of the control crop powdery mildew of effective ingredient with Osthole and S-Ethyl ethylthio sulfonate.
The botanical fungicide of control crop powdery mildew of the present invention, its effective ingredient is Osthole and S-Ethyl ethylthio sulfonate, the weight ratio of Osthole and S-Ethyl ethylthio sulfonate is 1 in the medicament: 5-1: 20.
Advantage that the present invention has and better effects are: 1, Osthole and S-Ethyl ethylthio sulfonate produce synergistic function preferably after composite, avoid the long-term pesticide resistance of using single preparation to occur, prolong the service time of medicament; 2, reduce usage amount, reduced use cost; 3, improve result of treatment, all good to the multiple diseases control efficiency; 4, the Osthole of plant resource and plant resource bionic pesticide S-Ethyl ethylthio sulfonate are rationally composite, and toxicity is low, nuisanceless, and is environmentally safe.
Embodiment
Below in conjunction with concrete test and embodiment technical scheme of the present invention is described further, the percentage that relates among test of the present invention and the embodiment all is weight percentage.
Osthole used in the present invention can be with known Osthole extraction process, and ripe production technology obtains.And the S-Ethyl ethylthio sulfonate composite with it has very ripe production technology at present in China, and former medicine supply is sufficient.Its acquisition approach is unimportant, as long as meet ratio range of the present invention and application conditions.
One, the actual effect of the different composite ratio of frutus cnidii and S-Ethyl ethylthio sulfonate is carried out laboratory test:
Reagent agent
Reagent agent is that 94.7% Osthole (academy of agricultural sciences, Jiangsu Province provides) is dissolved in 95% ethanol, and it is standby to make the 10000ug/ml mother liquor; 95.6% S-Ethyl ethylthio sulfonate (Henan Province the earth farmingization Co., Ltd provides) is dissolved in acetone respectively, and it is standby to make the 10000ug/ml mother liquor.
The complex composition proportion design
Virulence curve (giving birth to the survey method as described later) by preliminary experiment and single agent of being measured carries out proportion design, carries out compositely according to the compound proportion of table 1, and each composite dose all is dissolved in acetone, and it is standby to make the 10000ug/ml mother liquor.
Table 1 Osthole and S-Ethyl ethylthio sulfonate compound proportion scope and composite illustration
Annotate: listed ratio is all calculated by medicament active ingredient in the table.
It is standby then above-mentioned former medicine and composite dose to be diluted to the series concentration soup by table 2.
Each medicine series diluted concentration gradient of table 2
Bacterium liquid is prepared:
The white powder germ that to gather from the field scrapes, and is made into conidial suspension with sterile water, and concentration is in 10 * 10 times each visual field 10-20 conidium of microscopically.
Condition determination and standard:
The soup of even spraying different disposal concentration on the fresh strawberry plant leaf, behind the 24h on every blade drop 3 points, every some 5ul spore liquid.Record morbidity progression calculates disease and refers to and preventive effect behind the 4d.
Disease refers to investigate grade scale:
0 grade: no scab;
1 grade: lesion area accounts for below 5% of whole leaf area;
3 grades: lesion area accounts for 6%～10% of whole leaf area;
5 grades: lesion area accounts for 11%～25% of whole leaf area;
7 grades: lesion area accounts for 26%～50% of whole leaf area;
9 grades: lesion area accounts for more than 50% of whole leaf area.
Computational methods:
Calculate preventive effect according to formula, utilize the percentage and the probit value table of comparisons to convert preventive effect to probit value, simultaneously dose concentration is converted into logarithm value, obtains independent formula Y=a+bX, calculate concentration EC50 in correlation coefficient r and the inhibition with dosage logarithm value (X) and probit value (y).
The synergistic effect of calculating mixed agent according to the method for Wadley, i.e. SR＜0.5, then two kinds of medicaments antagonism that has been mixed; 0.5≤SR≤1.5, then two kinds of medicaments summation action that has been mixed; SR＞1.5, then two kinds of medicaments synergistic effect that has been mixed.Result and analysis:
Osthole and S-Ethyl ethylthio sulfonate and composite dose of virulence regression equation y=a+bX thereof to the powdery mildew of strawberry bacterium, correlation coefficient r, and the coefficient of synergism SR of concentration EC50 (ug/m1) and mixture sees Table 3 in effectively suppressing.
Prescription The selection result in table 3 Osthole and S-Ethyl ethylthio sulfonate and the compound sterilizing composed chamber thereof
As can be seen from Table 3, Osthole wants high to the specific activity S-Ethyl ethylthio sulfonate of powdery mildew of strawberry bacterium under condition of living body; Its composite back coefficient of synergism has synergistic effect preferably all greater than 1.5.In addition, there is not mutual pesticide resistance problem in these two kinds of medicament mechanism of action differences, can be used for alleviating the resistance problem of Osthole so this two classes medicament is mixed, and prolong the service life of medicament.
Two, further verify the practical effect of complex preparation control crop powdery mildew by embodiment, on tomato, pumpkin, strawberry, prevent and treat the demonstration test of powdery mildew.Specific embodiment is as follows:
One: 12% Osthole S-Ethyl ethylthio sulfonate of embodiment SE800 is (active ingredient: 2% Osthole+10% S-Ethyl ethylthio sulfonate) doubly.Control tomato, pumpkin, powdery mildew of strawberry, medication at the initial stage of a disease, every 667m2 dosage 60～80ml, the later stage, every 667m2 dosage reached 100～150ml along with blade increases.
Two: 22% Osthole S-Ethyl ethylthio sulfonates of embodiment SE800 is (active ingredient: 2% Osthole+20% S-Ethyl ethylthio sulfonate) doubly.Control tomato, pumpkin, powdery mildew of strawberry, medication at the initial stage of a disease, every 667m2 dosage 60～80ml, the later stage, every 667m2 dosage reached 100～150ml along with blade increases.
Three: 32% Osthole S-Ethyl ethylthio sulfonates of embodiment SE800 is (active ingredient: 2% Osthole+30% S-Ethyl ethylthio sulfonate) doubly.Control tomato, pumpkin, powdery mildew of strawberry, at the initial stage of a disease with the 800X spraying, every 667m2 dosage 50～70ml, medication was 1 time in per 5～7 days.Later stage, every 667m2 dosage reached 80～120ml along with blade increases.
Four: 42% Osthole S-Ethyl ethylthio sulfonates of embodiment SE800 is (active ingredient: 2% Osthole+40% S-Ethyl ethylthio sulfonate) doubly.Control tomato, pumpkin, powdery mildew of strawberry begin spraying at the initial stage of a disease, every 667m2 dosage 50～70ml, spray in per 5～7 days 1 time.Later stage, every 667m2 dosage reached 80～120ml along with blade increases.
The field control effectiveness test of the foregoing description is as follows:
" pesticide field efficacy medicine test criterion " by the chief editor of The Institute for the Control of Agrochemicals of the Ministry of Agriculture,PRC designs the field control effectiveness test of complex preparation to several crop powdery mildews.
Experimental scheme:
Concrete experimental design sees Table 4:
Table 4 Osthole and S-Ethyl ethylthio sulfonate and the design of compound sterilizing combination preparation field control effectiveness test thereof
Wherein, EW represents that aqueous emulsion, WG represent that soluble powder, EC represent missible oil.
The sub-district is provided with:
Small plot experiment, every sub-district 10m2, every processing repeats for 3 times.In the disease phase dispenser of starting, test is with the artificial knapsack sprayer dispenser of workers and peasants-16 type, to squirt leave dual sides soup following droplet degree of being not just, uses amount of liquid medicine 50kg/667m2.
Disease survey:
Investigation state of an illness radix before the 1st dispenser, preventive effect behind investigation medicine last time before each dispenser, last 7d investigation, i.e. 5 samplings in each sub-district there are not some investigation 5 strains, during the investigation fruit, 3～5 of every strain investigation, during the investigation blade, get three leaf investigation in every strain upper, middle and lower, the percentage that accounts for the whole blade area with lesion area carries out classification.
Grade scale:
0 grade: no scab;
1 grade: lesion area accounts for below 5% of whole leaf area;
3 grades: lesion area accounts for 6%～10% of whole leaf area;
5 grades: lesion area accounts for 11%～25% of whole leaf area;
7 grades: lesion area accounts for 26%～50% of whole leaf area;
9 grades: lesion area accounts for more than 50% of whole leaf area.
The drug effect computational methods:
Control efficiency (%)=(1-CK0 * Pt1/CK1 * Pt0) * 100%
(CK0, CK1 represent the contrast medicine respectively before, disease refers to behind the medicine, before Pt0, Pt1 represent the treatment region medicine respectively, disease refers to behind the medicine).
Other influences to crop:
Whether have poisoning produce, have poisoning then to write down the poisoning degree if observing:
Experimental result sees Table 5:
Table 5 Osthole and S-Ethyl ethylthio sulfonate and complex preparation thereof are prevented and treated various crop powdery mildew field efficacy experimental results
Table 5 preventive effect is 3 mean values that repeat
Each medicament is analyzed the crop powdery mildew field control effect:
See Table 5, control tomato powdery mildew every 667m2 with 1% Osthole EW250 doubly, 80% S-Ethyl ethylthio sulfonate EC1500 doubly, 12% Osthole S-Ethyl ethylthio sulfonate SE800 doubly, 22% Osthole S-Ethyl ethylthio sulfonate SE800 doubly, 32% Osthole S-Ethyl ethylthio sulfonate SE80 doubly, 42% Osthole S-Ethyl ethylthio sulfonate SE800 doubly etc. the average preventive effect of medicament be respectively 64.8%, 62.2%, 71.5%, 78.4%, 81.8%, 86.7%, the preventive effect that contrast medicament 10% Difenoconazole (generation height) is WG1000 times is 70.3%.The results of analysis of variance shows, handling pharmacy control efficacy height order is: 42% Osthole S-Ethyl ethylthio sulfonate SE＞32% Osthole S-Ethyl ethylthio sulfonate SE＞22% Osthole S-Ethyl ethylthio sulfonate SE＞12% Osthole S-Ethyl ethylthio sulfonate SE, preventive effect all is higher than between contrast medicament 10% Difenoconazole (generation height) the WG1000 preventive effect doubly, while 42% Osthole S-Ethyl ethylthio sulfonate SE, 32% Osthole S-Ethyl ethylthio sulfonate SE, 22% Osthole S-Ethyl ethylthio sulfonate SE three has utmost point significant difference with the contrast pharmacy control efficacy, and with two single agent 1% Osthole EW250 doubly, difference reaches utmost point significance level between the 80% S-Ethyl ethylthio sulfonate EC1500 preventive effect doubly; 12% Osthole S-Ethyl ethylthio sulfonate SE800 is doubly not remarkable with contrast medicament difference, but with two single agent 1% Osthole EW250 doubly, 80% S-Ethyl ethylthio sulfonate EC1500 times significant difference.
Control squash marble dust every 667m2 with 1% Osthole EW250 doubly, 80% S-Ethyl ethylthio sulfonate EC1500 doubly, 12% Osthole S-Ethyl ethylthio sulfonate SE800 doubly, 22% Osthole S-Ethyl ethylthio sulfonate SE800 doubly, 32% Osthole S-Ethyl ethylthio sulfonate SE80 doubly, 42% Osthole S-Ethyl ethylthio sulfonate SE800 doubly etc. the on average anti-preventive effect of medicament be respectively 68.2%, 67.4%, 71.2%, 78.5%, 80.6%, 82.7%, the preventive effect that contrast medicament 10% generation is high WG1000 times is 72.1%.The results of analysis of variance shows, 22% Osthole S-Ethyl ethylthio sulfonate SE800 doubly, 32% Osthole S-Ethyl ethylthio sulfonate SE800 doubly, 42% Osthole S-Ethyl ethylthio sulfonate SE800 preventive effect doubly doubly reaches utmost point significant difference between the preventive effect that contrasts medicament with single agent 1% Osthole EW250 preventive effect, 80% S-Ethyl ethylthio sulfonate EC1500 doubly; Do not have significant difference between the preventive effect of 12% Osthole S-Ethyl ethylthio sulfonate SE800 preventive effect doubly and contrast medicament 10% Difenoconazole (generation height), but with two single agent 1% Osthole EW250 times, 80% S-Ethyl ethylthio sulfonate EC1500 times significant difference.
Control powdery mildew of strawberry every 667m2 with 1% Osthole EW250 doubly, 80% S-Ethyl ethylthio sulfonate EC1500 doubly, 12% Osthole S-Ethyl ethylthio sulfonate SE800 doubly, 22% Osthole S-Ethyl ethylthio sulfonate SE800 doubly, 32% Osthole S-Ethyl ethylthio sulfonate SE800 doubly, 42% Osthole S-Ethyl ethylthio sulfonate SE800 doubly etc. the average anti-preventive effect of medicament be respectively 65.3%, 62.4%, 74.4%, 81.7%, 84.5%, 86.8%, the preventive effect that contrast medicament 10% generation is high WG1000 times is 66.8%.The results of analysis of variance shows, 12% Osthole S-Ethyl ethylthio sulfonate SE800 doubly, 22% Osthole S-Ethyl ethylthio sulfonate SE800 doubly, 32% Osthole S-Ethyl ethylthio sulfonate SE800 doubly, 42% Osthole S-Ethyl ethylthio sulfonate SE800 preventive effect doubly and single agent 1% Osthole EW250 doubly, 80% S-Ethyl ethylthio sulfonate EC1500 doubly reaches utmost point significant difference between the preventive effect that contrasts medicament.
Evaluating drug:
Osthole and S-Ethyl ethylthio sulfonate complex preparation have the better prevention effect to the crop powdery mildew bacterium, be higher than the doubly preventive effect of single preparation of 250 times of 1% Ostholes, 80% S-Ethyl ethylthio sulfonate EC1500, the 12% Osthole S-Ethyl ethylthio sulfonate SE800 doubly preventive effect with the contrast medicament is suitable, 22% Osthole S-Ethyl ethylthio sulfonate SE800 doubly, 32% Osthole S-Ethyl ethylthio sulfonate SE800 doubly, 42% Osthole S-Ethyl ethylthio sulfonate SE800 multiple proportions contrast pharmacy control efficacy significantly improves, and can effectively prevent and treat the harm of white powder germ to various crops.
Observe according to system behind the medicine, do not see during the reagent that obvious poisoning takes place, each test medicine has no adverse effects to plant growth.
Claims (1)
1. botanical fungicide of preventing and treating crop powdery mildew, it is characterized in that: its effective ingredient is Osthole and S-Ethyl ethylthio sulfonate, the weight ratio of Osthole and S-Ethyl ethylthio sulfonate is 1:5-1:20 in the medicament.
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| CN104186495A (en) * | 2014-08-20 | 2014-12-10 | 青岛农业大学 | Pyrisoxazole-cnidium lactone suspension emulsion and preparation method thereof |
| CN104255732A (en) * | 2014-09-23 | 2015-01-07 | 江苏省绿盾植保农药实验有限公司 | Compound bactericide containing zincpolyanemine and cnidium lactone and application of compound bactericide |
| CN104351181A (en) * | 2014-10-28 | 2015-02-18 | 山东中大药业有限公司 | Microcapsule suspension agent with effective ingredients including allicin and cnidium lactone |
| CN104396957A (en) * | 2014-10-28 | 2015-03-11 | 山东中大药业有限公司 | Microemulsion for controlling tea-tree tea geometrid |
| CN105230631A (en) * | 2015-09-30 | 2016-01-13 | 江苏农林职业技术学院 | Bio-origin compounded bactericidal composition for treating powdery mildew of ornamental flowers and applications thereof |
| CN106259478A (en) * | 2016-07-20 | 2017-01-04 | 无锡市厚桥中东桃梨专业合作社 | A kind of medicine based on herbs preventing and treating pears canker |
| CN106718406A (en) * | 2017-01-11 | 2017-05-31 | 贵州省植物园 | A kind of method for preventing and treating Rose Powdery Mildew |
| CN114982770A (en) * | 2022-06-16 | 2022-09-02 | 江西省农业科学院植物保护研究所 | Composition for preventing and treating sesame wilt and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104186495A (en) * | 2014-08-20 | 2014-12-10 | 青岛农业大学 | Pyrisoxazole-cnidium lactone suspension emulsion and preparation method thereof |
| CN104186495B (en) * | 2014-08-20 | 2016-05-04 | 青岛农业大学 | A kind of SYP-Zo48-Osthole suspended emulsion and preparation method thereof |
| CN104255732A (en) * | 2014-09-23 | 2015-01-07 | 江苏省绿盾植保农药实验有限公司 | Compound bactericide containing zincpolyanemine and cnidium lactone and application of compound bactericide |
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| CN104396957A (en) * | 2014-10-28 | 2015-03-11 | 山东中大药业有限公司 | Microemulsion for controlling tea-tree tea geometrid |
| CN105230631A (en) * | 2015-09-30 | 2016-01-13 | 江苏农林职业技术学院 | Bio-origin compounded bactericidal composition for treating powdery mildew of ornamental flowers and applications thereof |
| CN106259478A (en) * | 2016-07-20 | 2017-01-04 | 无锡市厚桥中东桃梨专业合作社 | A kind of medicine based on herbs preventing and treating pears canker |
| CN106718406A (en) * | 2017-01-11 | 2017-05-31 | 贵州省植物园 | A kind of method for preventing and treating Rose Powdery Mildew |
| CN114982770A (en) * | 2022-06-16 | 2022-09-02 | 江西省农业科学院植物保护研究所 | Composition for preventing and treating sesame wilt and application thereof |
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