CN102578127A - Bactericide for controlling cucumber downy mildew - Google Patents
Bactericide for controlling cucumber downy mildew Download PDFInfo
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- CN102578127A CN102578127A CN201210024807XA CN201210024807A CN102578127A CN 102578127 A CN102578127 A CN 102578127A CN 201210024807X A CN201210024807X A CN 201210024807XA CN 201210024807 A CN201210024807 A CN 201210024807A CN 102578127 A CN102578127 A CN 102578127A
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- bactericide
- dimethomorph
- downy mildew
- urea cyanogen
- cucumber downy
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Abstract
The invention discloses a bactericide for controlling cucumber downy mildew, which is characterized in that the bactericide comprises dimethomorph and cymoxanil; the weight percentage of dimethomorph to cymoxanil is (50 to 10):(10 to 1); and in addition, the bactericide is characterized by obvious sterilization effect, quick effectiveness after spraying and long duration of drug action compared with conventional pesticides by adopting the technical scheme of the bactericide.
Description
Technical field
The present invention relates to a kind of bactericide, specifically, relate to a kind of bactericide of preventing and treating cucumber downy mildew.
Background technology
Advocating today green and the protection environment, multiple high poison and high residue chemicals are limited the quantity of or are stopped production.According to investigations, the whole world pathogenic microorganism (fungi, strong bacterium, rickettsia, mycoplasma, virus, algae etc.) harmful to plant has more than 80,000 kinds.Plant disease brings about great losses to agricultural, and global crops reduce the about 500Mt of output thus every year on average.
Cucumber downy mildew is commonly called as " horse race is done ", " cured leaf ", becomes seedling stage strain all can be injured, mainly cause harm blade and stem, and tendril and bennet are injured less.The morbidity of seedling phase, the irregular chlorisis yellowish-brown spot of the positive generation of cotyledon, 0.2-0.5 centimetre of scab diameter, the scab back side produces taupe mustiness thing when moist, and cotyledons turn yellow is withered when serious.Become the strain morbidity, how to begin from the forward position, greenhouse, water stain shape, light green fleck appear in morbidity strain middle and lower part blade reverse side before this, and the front does not show, and back scab enlarges gradually, front exposed, and scab flavescence brown is limited by vein, and scab is polygonal.Under wet condition, puce or the sparse mould layer of taupe appear in the scab back side, and when serious, scab joins together, and blade is withered.
Cucumber downy mildew is to cause that by the false Peronospora fungi infringement of Mastigomycotina the sporangium of this germ leans on air-flow and rainwater to propagate.In the greenhouse, people's activity in production is the main source of infection of downy mildew.Cucumber downy mildew optimum onset temperature is 16-24 ℃, is lower than 10 ℃ or be higher than 28 ℃, and difficult morbidity is lower than 5 ℃ or be higher than 30 ℃, does not fall ill basically.Suitable morbidity humidity is more than 85%, when blade has moisture film, is subject to infect morbidity most especially.Humidity is lower than 70%, and the germ spore is difficult to germinate and infects, and is lower than 60%, and the germ spore can not produce.
At present; The bactericide that the control of cucumber downy mildew is mainly used has: 50% alkene acyl thiram wettable powder, 60% dimethomorph mancozeb wettable powder, 35% alkene acyl frost urea cyanogen suspending agent, 50% dimethomorph wetting powder, 38% are disliked white bacterium ester, 72% Du Pont gram reveals; Above-mentioned bactericide sprays the back property of medicine and takes effect slowly in the process of control cucumber downy mildew, and the property of medicine duration is short; Control efficiency is all undesirable, causes the output of cucumber to reduce.
Summary of the invention
The technical problem that the present invention will solve is to overcome above-mentioned defective, and the bactericide of the good control cucumber downy mildew of a kind of instant effect, property of medicine longer duration and control efficiency is provided.
For addressing the above problem, the technical scheme that the present invention adopted is:
A kind of bactericide of preventing and treating cucumber downy mildew is characterized in that: said bactericide comprises dimethomorph and white urea cyanogen, and the percentage by weight of dimethomorph and white urea cyanogen is (50～10): (10～1).
As a kind of improvement:
The percentage by weight of said dimethomorph and white urea cyanogen is 20:5.
As further improvement:
The percentage by weight of said dimethomorph and white urea cyanogen is 50:10.
As further improvement:
The percentage by weight of said dimethomorph and white urea cyanogen is 50:5.
As further improving again:
The percentage by weight of said dimethomorph and white urea cyanogen is 50:1.
As further improving again:
The percentage by weight of said dimethomorph and white urea cyanogen is 20:10.
As further improving again:
The percentage by weight of said dimethomorph and white urea cyanogen is 10:10.
As further improving again:
The percentage by weight of said dimethomorph and white urea cyanogen is 10:5.
As further improving again:
The percentage by weight of said dimethomorph and white urea cyanogen is 10:1.
As further improving again:
The continuous phase of said bactericide is kaolin, and the auxiliary agent of said bactericide is NNO, and said NNO accounts for 5% of bactericide total amount.
Dimethomorph is the single-minded Oomycete fungi bactericide that kills; Its effect characteristics are to destroy the formation of cell envelope; All there is effect in each stage to oomycetes history of life, and is particularly responsive in the formation stage of sporangiophore and egg spore, and under extremely low concentration (0.25 μ g/ml) promptly be suppressed.There is not cross resistance with the phenylamide medicament.Absorption is strong in this medicine, through the root dispenser, can arrive each position of plant.Foliage spray also can get into blade interior, and the germ of blade interior has been invaded in control in time, and the blade to new life has good protective effect simultaneously.Can form strong effectively diaphragm in crop surface after the dispenser, thereby show the effect of internal therapentics outer protection.
Frost urea cyanogen is a kind of efficient, low toxicity bactericide, and its mechanism of action and characteristics mainly work the formation of inhibition spore germination, the elongation of tooth pipe, appresorium and mycelia to the biosynthesis and the cell membrane function of the lipids of fungi.Be to tag and preventative bactericide, Peronosporales fungi such as epidemic disease frost genus, Peronospora, single shaft frost are belonged to effectively.Frost urea cyanogen and other protective fungicides are used with extensively.
NNO is the brown powdery of rice, chemical name di-2-ethylhexylphosphine oxide bitter edible plant sodium sulfonate, and molecular formula is CH2 (C10H6SO3Na) 2 or C21H14O6S2Na2, is soluble in the water of any hardness.Dispersing agent NNO has superior proliferating property and protecting colloid performance, but does not have surface-active such as infiltration foaming etc., and protein and Fypro are had affinity, and fibers such as cotton, fiber crops are not had affinity
.
Iprodione and procymidone are mixed and made into bactericide in proportion, utilize both different sterilization mechanisms, make the two can be complementary aspect sterilization; Learn from other's strong points to offset one's weaknesses, guaranteeing that using medicine all is under the prerequisite of low toxicity, gets into crop inside fast and sets about killing pathogenic bacteria from mechanism of different; And can form layer protecting film in crop surface, and make germ be difficult to invade, duration of efficacy is long; Thereby play cover crop, killing pathogenic bacteria, the effect of increasing both production and income.
In use, get this bactericide, after the dilution proportion of water with 1:3000; Cucumber sprayed prevent and treat disease; Spray the back dimethomorph and get into very soon in the crop, destroy the formation of germ cell envelope, white urea cyanogen works to the biosynthesis and the cell membrane function of the lipids of fungi; Suppress the formation of spore germination, the elongation of tooth pipe, appresorium and mycelia, instant effect; Simultaneously, dimethomorph can form strong effectively diaphragm in crop surface again, makes property of medicine longer duration, reaches the effect of internal therapentics outer protection, and control efficiency is good, and then has increased the output of cucumber.
Owing to adopted technique scheme, the present invention compares with existing agricultural chemicals and has the following advantages:
1. bactericidal effect is obvious;
2. spray the back instant effect;
3. duration of efficacy is long.
Below in conjunction with embodiment the present invention is further specified.
Embodiment
Embodiment 1: a kind of bactericide of preventing and treating cucumber downy mildew, said bactericide comprise 20% dimethomorph and 5% white urea cyanogen, and the continuous phase of bactericide is kaolin, and the auxiliary agent of said bactericide is a dispersing agent NNO, and said dispersing agent NNO accounts for 5% of bactericide total amount.
With comparative trial 1 bactericidal effect of the present invention is described further.
Comparative trial 1
Cucumber downy mildew control test: the dimethomorph with 20%, 5% white urea cyanogen, 5% dispersing agent NNO, continuous phase is kaolin, processes 25% alkene acyl frost urea cyanogen wetting powder, adds water 1:3000 and doubly dilutes, and the test cucumber is sprayed.
Table one
The result can find out from table one contrast: the present invention still obviously is superior to other bactericide at responding time and duration at control rate, and then makes cucumber obtain raising the output by a relatively large margin.
Embodiment 2: a kind of bactericide of preventing and treating cucumber downy mildew, said bactericide comprise 50% dimethomorph and 10% white urea cyanogen, and the continuous phase of bactericide is kaolin, and the auxiliary agent of said bactericide is a dispersing agent NNO, and said dispersing agent NNO accounts for 5% of bactericide total amount.
With comparative trial 2 bactericidal effect of the present invention is described further.
Comparative trial 2
Cucumber downy mildew control test: the dimethomorph with 50%, 10% white urea cyanogen, 5% dispersing agent NNO, continuous phase is kaolin, processes 60% alkene acyl frost urea cyanogen wetting powder, adds water 1:3000 and doubly dilutes, and the test cucumber is sprayed.
Table two
Can find out from table two comparing result: the present invention still obviously is superior to other bactericide at responding time and duration at control rate, and then makes cucumber obtain raising the output by a relatively large margin.
Embodiment 3: a kind of bactericide of preventing and treating cucumber downy mildew, said bactericide comprise 50% dimethomorph and 5% white urea cyanogen, and the continuous phase of bactericide is kaolin, and the auxiliary agent of said bactericide is a dispersing agent NNO, and said dispersing agent NNO accounts for 5% of bactericide total amount.
With comparative trial 3 bactericidal effect of the present invention is described further.
Comparative trial 3
Cucumber downy mildew control test: the dimethomorph with 50%, 5% white urea cyanogen, 5% dispersing agent NNO, continuous phase is kaolin, processes 55% alkene acyl frost urea cyanogen wetting powder, adds water 1:3000 and doubly dilutes, and the test cucumber is sprayed.
Table three
Can find out from table three comparing result: the present invention still obviously is superior to other bactericide at responding time and duration at control rate, and then makes cucumber obtain raising the output by a relatively large margin.
Embodiment 4: a kind of bactericide of preventing and treating cucumber downy mildew, said bactericide comprise 50% dimethomorph and 1% white urea cyanogen, and the continuous phase of bactericide is kaolin, and the auxiliary agent of said bactericide is a dispersing agent NNO, and said dispersing agent NNO accounts for 5% of bactericide total amount.
With comparative trial 4 bactericidal effect of the present invention is described further.
Comparative trial 4
Cucumber downy mildew control test: the dimethomorph with 50%, 1% white urea cyanogen, 5% dispersing agent NNO, continuous phase is kaolin, processes 51% alkene acyl frost urea cyanogen wetting powder, adds water 1:3000 and doubly dilutes, and the test cucumber is sprayed.
Table four
Can find out from table four comparing result: the present invention still obviously is superior to other bactericide at responding time and duration at control rate, and then makes cucumber obtain raising the output by a relatively large margin.
Embodiment 5: a kind of bactericide of preventing and treating cucumber downy mildew, said bactericide comprise 20% dimethomorph and 10% white urea cyanogen, and the continuous phase of bactericide is kaolin, and the auxiliary agent of said bactericide is a dispersing agent NNO, and said dispersing agent NNO accounts for 5% of bactericide total amount.
With comparative trial 5 bactericidal effect of the present invention is described further.
Comparative trial 5
Cucumber downy mildew control test: the dimethomorph with 20%, 10% white urea cyanogen, 5% dispersing agent NNO, continuous phase is kaolin, processes 30% alkene acyl frost urea cyanogen wetting powder, adds water 1:3000 and doubly dilutes, and the test cucumber is sprayed.
Table five
Can find out from table five comparing result: the present invention still obviously is superior to other bactericide at responding time and duration at control rate, and then makes cucumber obtain raising the output by a relatively large margin.
Embodiment 6: a kind of bactericide of preventing and treating cucumber downy mildew, said bactericide comprise 10% dimethomorph and 5% white urea cyanogen, and the continuous phase of bactericide is kaolin, and the auxiliary agent of said bactericide is a dispersing agent NNO, and said dispersing agent NNO accounts for 5% of bactericide total amount.
With comparative trial 6 bactericidal effect of the present invention is described further.
Comparative trial 6
Cucumber downy mildew control test: the dimethomorph with 10%, 5% white urea cyanogen, 5% dispersing agent NNO, continuous phase is kaolin, processes 15% alkene acyl frost urea cyanogen wetting powder, adds water 1:3000 and doubly dilutes, and the test cucumber is sprayed.
Table six
Can find out from table six comparing result: the present invention still obviously is superior to other bactericide at responding time and duration at control rate, and then makes cucumber obtain raising the output by a relatively large margin.
Embodiment 7: a kind of bactericide of preventing and treating cucumber downy mildew, said bactericide comprise 10% dimethomorph and 1% white urea cyanogen, and the continuous phase of bactericide is kaolin, and the auxiliary agent of said bactericide is a dispersing agent NNO, and said dispersing agent NNO accounts for 5% of bactericide total amount.
With comparative trial 7 bactericidal effect of the present invention is described further.
Comparative trial 7
Cucumber downy mildew control test: the dimethomorph with 10%, 1% white urea cyanogen, 5% dispersing agent NNO, continuous phase is kaolin, processes 11% alkene acyl frost urea cyanogen wetting powder, adds water 1:3000 and doubly dilutes, and the test cucumber is sprayed.
Table seven
Can find out from table seven comparing result: the present invention still obviously is superior to other bactericide at responding time and duration at control rate, and then makes cucumber obtain raising the output by a relatively large margin.
Embodiment 8: a kind of bactericide of preventing and treating cucumber downy mildew, said bactericide comprise 10% dimethomorph and 10% white urea cyanogen, and the continuous phase of bactericide is kaolin, and the auxiliary agent of said bactericide is a dispersing agent NNO, and said dispersing agent NNO accounts for 5% of bactericide total amount.
With comparative trial 8 bactericidal effect of the present invention is described further.
Comparative trial 8
Cucumber downy mildew control test: the dimethomorph with 10%, 10% white urea cyanogen, 5% dispersing agent NNO, continuous phase is kaolin, processes 20% alkene acyl frost urea cyanogen wetting powder, adds water 1:3000 and doubly dilutes, and the test cucumber is sprayed.
Table eight
Can find out from table eight comparing result: the present invention still obviously is superior to other bactericide at responding time and duration at control rate, and then makes cucumber obtain raising the output by a relatively large margin.
In sum; The bactericide of mainly being processed by a certain percentage by dimethomorph and white urea cyanogen is compared with existing bactericide and independent dimethomorph or white urea cyanogen, all has greater advantage; Has good control efficiency aspect the control cucumber downy mildew; Control rate reaches more than 84%, and instant effect, and average yield per mu output also has increased significantly.
In addition, find in test different along with the proportioning of dimethomorph and white urea cyanogen; There is fluctuation from control rate, take effect phase and per mu yield; Find that through analyzing the percentage by weight of dimethomorph and white urea cyanogen is when 20:5, it is best that These parameters reaches.
Claims (10)
1. bactericide of preventing and treating cucumber downy mildew, it is characterized in that: said bactericide comprises dimethomorph and white urea cyanogen, and the percentage by weight of dimethomorph and white urea cyanogen is (50～10): (10～1).
2. a kind of bactericide of preventing and treating cucumber downy mildew according to claim 1 is characterized in that: the percentage by weight of said dimethomorph and white urea cyanogen is 20:5.
3. a kind of bactericide of preventing and treating cucumber downy mildew according to claim 1 is characterized in that: the percentage by weight of said dimethomorph and white urea cyanogen is 50:10.
4. a kind of bactericide of preventing and treating cucumber downy mildew according to claim 1 is characterized in that: the percentage by weight of said dimethomorph and white urea cyanogen is 50:5.
5. a kind of bactericide of preventing and treating cucumber downy mildew according to claim 1 is characterized in that: the percentage by weight of said dimethomorph and white urea cyanogen is 50:1.
6. a kind of bactericide of preventing and treating cucumber downy mildew according to claim 1 is characterized in that: the percentage by weight of said dimethomorph and white urea cyanogen is 20:10.
7. a kind of bactericide of preventing and treating cucumber downy mildew according to claim 1 is characterized in that: the percentage by weight of said dimethomorph and white urea cyanogen is 10:10.
8. a kind of bactericide of preventing and treating cucumber downy mildew according to claim 1 is characterized in that: the percentage by weight of said dimethomorph and white urea cyanogen is 10:5.
9. a kind of bactericide of preventing and treating cucumber downy mildew according to claim 1 is characterized in that: the percentage by weight of said dimethomorph and white urea cyanogen is 10:1.
10. according to one of them described a kind of bactericide of preventing and treating cucumber downy mildew of claim 1 to 9, it is characterized in that: the continuous phase of said bactericide is kaolin, and the auxiliary agent of said bactericide is NNO, and said NNO accounts for 5% of bactericide total amount.
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| CN201210024807XA CN102578127A (en) | 2012-02-06 | 2012-02-06 | Bactericide for controlling cucumber downy mildew |
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| CN201210024807XA CN102578127A (en) | 2012-02-06 | 2012-02-06 | Bactericide for controlling cucumber downy mildew |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024184842A1 (en) * | 2023-03-07 | 2024-09-12 | Upl Mauritius Limited | Fungicidal products, methods, and applications thereof |
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| WO2002021918A1 (en) * | 2000-09-12 | 2002-03-21 | Syngenta Participations Ag | Fungicidal compositions |
| CN1387759A (en) * | 2002-04-19 | 2003-01-01 | 广东省昆虫研究所 | Germicide for preventing and controlling downy mildew of lichee |
| CN101053328A (en) * | 2007-05-25 | 2007-10-17 | 天津市东方农药有限公司 | Bactericide composition containing dimethomorph |
| CN101700038A (en) * | 2009-11-30 | 2010-05-05 | 青岛星牌作物科学有限公司 | Bactericidal composition containing cyazofamid and application thereof |
| CN101779650A (en) * | 2010-02-23 | 2010-07-21 | 唐满仓 | Pesticide water dispersible granule containing dimethomorph and cymoxanil and preparation method thereof |
| CN101953356A (en) * | 2010-10-13 | 2011-01-26 | 山东农业大学 | Dimethomorph-containing thermal smoke agent for preventing and controlling downy mildew of vinyl house cucumbers |
-
2012
- 2012-02-06 CN CN201210024807XA patent/CN102578127A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002021918A1 (en) * | 2000-09-12 | 2002-03-21 | Syngenta Participations Ag | Fungicidal compositions |
| CN1387759A (en) * | 2002-04-19 | 2003-01-01 | 广东省昆虫研究所 | Germicide for preventing and controlling downy mildew of lichee |
| CN101053328A (en) * | 2007-05-25 | 2007-10-17 | 天津市东方农药有限公司 | Bactericide composition containing dimethomorph |
| CN101700038A (en) * | 2009-11-30 | 2010-05-05 | 青岛星牌作物科学有限公司 | Bactericidal composition containing cyazofamid and application thereof |
| CN101779650A (en) * | 2010-02-23 | 2010-07-21 | 唐满仓 | Pesticide water dispersible granule containing dimethomorph and cymoxanil and preparation method thereof |
| CN101953356A (en) * | 2010-10-13 | 2011-01-26 | 山东农业大学 | Dimethomorph-containing thermal smoke agent for preventing and controlling downy mildew of vinyl house cucumbers |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024184842A1 (en) * | 2023-03-07 | 2024-09-12 | Upl Mauritius Limited | Fungicidal products, methods, and applications thereof |
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Application publication date: 20120718 |