CN101632374B - Pesticide composition and application thereof - Google Patents
Pesticide composition and application thereof Download PDFInfo
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- CN101632374B CN101632374B CN 200910203318 CN200910203318A CN101632374B CN 101632374 B CN101632374 B CN 101632374B CN 200910203318 CN200910203318 CN 200910203318 CN 200910203318 A CN200910203318 A CN 200910203318A CN 101632374 B CN101632374 B CN 101632374B
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- prochloraz
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Abstract
The invention provides a pesticide composition and an application thereof, wherein the composition comprises the following active gradients: prochloraz and pyrimidine fungicides (ethirimol, or bupirimate, or dimethirimol); and the composite is suitable for preventing and treating diseases in agriculture. The pesticide composition has the following advantages: (1) the composition shows excellent synergic effect in a certain matching range, remarkably improves the sterilization effect compared with single dosage, reduces the using dosage of pesticide, the application employees and the cost simultaneously, and decreases adverse effects on environment and pesticide residue; (2) since the two effective gradients in the composition have different action mechanisms, the application of the composition can delay or overcome the drug resistance of pathogenic bacteria and prolong the service life of the single dosage; and (3) the composition has wide prevention and treatment spectrum and can prevent and treat a plurality of diseases of crops.
Description
Technical field
The present invention relates to a kind of composition pesticide, be used to prevent and treat the disease fungus on the agricultural, especially a kind of bactericidal composition more particularly is applicable to the composition of preventing and treating the Ascomycotina disease fungus.
Background technology
Powdery mildew is the plant disease that is caused by the Erysiphaceae in the fungi (Erysiphacesae).Mostly be ectoparasitism, the whole or big portion of mycelium is exposed to the surface of leaf, stem, the tender tip, bud, flower and the fruit of host plant, and produces the macroscopic white powder that is made of mycelium, conidiophore and conidium in a large number.
Powdery mildew is widely distributed in the whole world, and the dicotyledon of causing harm is particularly general.The main powdery mildew of China has the cereal class powdery mildew that is caused by standing grain powdery mildew (Ery-siphe graminis); The powdery mildew of various plants such as melon, the beans that causes by Siberian cocklebur monofilament shell (Sphaerotheca fuliginea), crudefiber crop; The grape powdery mildew that causes by grape snag shell (Uncinula necator); The powdery mildew of more than 80 kind of trees such as the mulberry that causes by hazel ball pin shell (Phyllactiniacorylea), pears, persimmon, walnut, chestnut, lichee, papaya papaw; Powdery mildew of the Rosa flowers that cause by rose monofilament shell (Sphaerotheca pannosa) etc.
Cucurbits powdery mildew and cereal class powdery mildew are the important diseases on melon production and cereal class are produced.Blade produces yellow point when just taking place, and then enlarges to develop into circle or oval scab, and the mould layer of adularescent powdery is given birth on the surface, is conidiophore and the conidium of germ, and back scab flavescence brown is the cleistothecium of germ.Mildew is early stage disperses separately, after be unified into a big mildew, even can cover full leaf, have a strong impact on photosynthesis, eubolism is interfered, cause early ageing, output incurs loss.Cereal class powdery mildew all can be fallen ill to heading from seedling.
In the control of powdery mildew, mainly rely on the medicament that triazole type, methoxy acrylate class etc. are efficient, the lasting period is long.These medicaments are because long-term use has produced pesticide resistance in various degree, and control efficiency reduces.A large amount of uses of medicament have simultaneously destroyed agroecological environment, and food security is also caused adverse effect.
Be the sustainable development of assurance agricultural production and the service life that prolongs medicament, seek the prevention and treatment method that has prevention and delaying drug resistance generation and can effectively tackle the resistance pathogen and seem particularly important.
Preventing and treating pathogen with the novel pesticide that does not have cross resistance is a good solution.But develop a novel pesticide at present and need screen 10,000～1.2 ten thousand compounds, expensive 1.2～1.5 hundred million dollars, the construction cycle is 5～10 years, is difficult to catch up with the speed that the pathogen resistance produces.Other method such as crop allocation adjustment, different agricultural chemicals are rotated etc., in the process of practical operation, are difficult to really play obvious effects.
Prochloraz is the imidazoles broad-spectrum germicide.The various crop disease that causes for sac fungi and imperfect fungus has special efficacy.Prochloraz causes effect by the biosynthesis that suppresses sterol.Though do not have a systemic action, it has certain conductive performance.Can use with most of bactericide, bactericide, Insecticides (tech) ﹠ Herbicides (tech), the better prevention effect is all arranged.Multiple diseases on field crop, fruit and vegetable, turf and the ornamental plants had treatment and eradicant action.Can prevent and treat bakanae disease of rice, rice blast, citrus anthracnose, blossom-end rot, penicilliosis, green mould, banana anthracnose, leaf spot, mango anthracnose, leaf spot of peanut, vegetables anthracnose, gray mold, powdery mildews such as capsicum, eggplant, muskmelon, tomato, strawberry anthracnose, sclerotinia rot of colza, leaf spot, mushroom brown spot, apple anthracnose, pear scab etc.
The phonetic phenol of second, bupirimate and dimethirimol are the miazines bactericide, are adenosine deaminase inhibitors.Interior absorption is arranged, have protection and therapeutic action.Can be absorbed rapidly by plant roots, stem, leaf, and in plant corpus, run to each position.Can prevent and treat the powdery mildew of fruit tree, vegetables, flowers, cereal crop.
At present, the phonetic phenol of Prochloraz and second (or bupirimate or dimethirimol) is composite is applied to prevent and treat the still unmanned report of disease.
Summary of the invention
The purpose of the embodiment of the invention is to provide a kind of raising control efficiency, reduces the composition pesticide of agricultural chemicals usage amount.
Another purpose of the embodiment of the invention is to provide the application of above-mentioned composition pesticide.
The composition pesticide of the embodiment of the invention, active component wherein are A (Prochloraz) and B (the phonetic phenol of second or bupirimate or dimethirimol)
The application of above-mentioned composition pesticide on the control agricultural disease.
Compared with prior art, technique scheme adopts Prochloraz and the phonetic phenol of second (or bupirimate or dimethirimol) as active component, add the composition pesticide that certain auxiliary material is mixed with certain formulation, produced following beneficial effect: (1) present composition shows fabulous synergistic effect in certain ratio range, the bactericidal effect of composition is significantly improved than single agent, reduced using dosage, dispenser recruitment and the cost of agricultural chemicals simultaneously, also reduced harmful effect and residue of pesticide environment; (2) two kinds of active ingredient mechanism of action differences in the present composition, the application of composition can delay or overcome the pesticide resistance of pathogen, prolongs the service life of single agent; Can double other disease of controlling when (3) present composition is prevented and treated the sac fungi disease.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
The present patent application people is in to the research of powdery mildew pesticide resistance, the white powder germ activity of finding Prochloraz antagonism triazole bactericidal agent is higher, by further that Prochloraz and other known farm chemical ingredients is composite, after finding that Prochloraz and the phonetic phenol of second (or bupirimate or dimethirimol) are composite, powder mildew resistance germ and responsive germ all there is significant synergistic effect.Find that after further study the present composition can be used for preventing and treating the disease on the various plants, especially sac fungi disease, more particularly powdery mildew.
The present composition is an active component with Prochloraz and the phonetic phenol of second (or bupirimate or dimethirimol), the ratio of weight and number of the phonetic phenol of Prochloraz and second (or bupirimate or dimethirimol) was at 30: 1～1: 50, more preferably 1: 5～1: 50, all the other are the auxiliary material that allows use in the agricultural chemicals, and the phonetic phenol of active ingredient Prochloraz and second (or bupirimate or dimethirimol) cumulant is 5～80% of a composition total weight in the preparation.
The present composition can adopt prior art, will contain the former medicine of effective composition Prochloraz and the phonetic phenol of second (or bupirimate or dimethirimol) and suitable auxiliary material and make upward available any formulation of agricultural; Bactericidal composition provided by the invention can be according to crop, the environmental condition of living in of required control, prevent and treat all kinds of factors such as method, control cost, and preferred formulation is wetting powder, water-dispersible granules, missible oil, microemulsion, aqueous emulsion.
Auxiliary material in the present composition comprises that solvent, dispersant, wetting agent, emulsifier, stabilizing agent, thickener, pH regulator agent, antifreezing agent, excipient, filler and other are of value to the known substance of active ingredient stable and drug effect performance in preparation, select different auxiliary material to be mixed with corresponding formulation as required.Above-mentioned auxiliary material all is the various compositions that permission commonly used in the pesticidal preparations is used, and is not particularly limited.
The processing technology of the various preparations of the present composition adopts known method preparation, is method commonly used in the pesticidal preparations processing technology.
Product described in the invention can the finished product preparation form provide, and promptly each material mixes in the composition, and the composition of composition also can provide with single agent form, directly directly mixes in bucket or jar before the use, is diluted to required concentration then.
Embodiment 1
Former medicine (present specification Central Plains medicine refers to Prochloraz and the phonetic phenol of second or bupirimate or dimethirimol, below repeats no more), various auxiliary agent and filler etc. are fully mixed, after ultrafine crusher is pulverized, be mixed with wetting powder.For example following prescription:
Prochloraz 8%
Bupirimate 40%
Lauryl sodium sulfate (surfactant) 2%
White carbon black (filler) 5%
Vinylpyrrolidone (adhesive) 4%
Sodium lignin sulfonate (dispersant) 5%
Attapulgite (filler) complements to 100%.
Adopt the Prochloraz bupirimate wetting powder of present embodiment to prevent and treat the disease experiment, controlling object is a pepper powdery mildew, and test site is the Huidong, Guangdong.Get above-mentioned wetting powder according to 3000 times of dilution sprayings, 7 days control efficiency are 94.18% behind the medicine, can prevent and treat pepper anthracnose simultaneously.The preventive effect of 2000 times of contrast medicament 25% Prochloraz missible oil, 500 times of 25% bupirimate missible oil is respectively 83.31%, 74.62%.
Embodiment 2
Former medicine, various auxiliary agent and filler etc. are fully mixed, after ultrafine crusher is pulverized, be mixed with wetting powder.For example following prescription:
Prochloraz 1%
The phonetic phenol 50% of second
The withered powder of tea (surfactant) 5%
Polyvinyl alcohol (dispersing binder) 8%
Sodium lignin sulfonate (dispersant) 9%
Kaolin (filler) complements to 100%.
Adopt the phonetic phenol wetting powder of Prochloraz second of present embodiment to prevent and treat the disease experiment, controlling object is a wheat powdery mildew, and test site is Jiaozhuo, Henan.Get above-mentioned wetting powder according to 2500 times of dilution sprayings, 7 days control efficiency are 91.27% behind the medicine, and the preventive effect of 2000 times of contrast medicament 25% Prochloraz missible oil, 500 times of the phonetic phenol suspending agents of 25% second is respectively 83.19%, 74.36%.
Embodiment 3
Former medicine, various auxiliary agent and filler etc. are fully mixed, after ultrafine crusher is pulverized, be mixed with wetting powder.For example following prescription:
Prochloraz 2%
Dimethirimol 40%
Lauryl sodium sulfate (surfactant) 2%
White carbon black (filler) 5%
Vinylpyrrolidone (adhesive) 4%
Sodium lignin sulfonate (dispersant) 5%
Bentonite (filler) complements to 100%.
Adopt the Prochloraz dimethirimol wetting powder of present embodiment to prevent and treat the disease experiment, controlling object is the tomato powdery mildew, and test site is the Zengcheng, Guangdong.Get above-mentioned wetting powder according to 2500 times of dilution sprayings, 7 days control efficiency are 93.08% behind the medicine, and the preventive effect of 2000 times of contrast medicament 25% Prochloraz missible oil, 500 times of 25% dimethirimol missible oil is respectively 82.47%, 73.61%.
Embodiment 4
Following ingredients is mixed according to corresponding proportion:
Prochloraz 12.5%
Bupirimate 12.5%
No. 500 (emulsifier) 8% of farming breast
Nongru-700 number (emulsifier) 3%
Ethanol (cosolvent) 8%
Dimethylbenzene (solvent) complements to 100%
Promptly obtain transparence 25% Prochloraz bupirimate missible oil after the dissolving.
Adopt present embodiment Prochloraz bupirimate missible oil to prevent and treat the disease experiment, controlling object is the watermelon powdery mildew, Zhuhai, test site Guangdong sluice gate.Get above-mentioned missible oil according to 2000 times of dilution sprayings, 7 days control efficiency are 96.38% behind the medicine, and the preventive effect that 2000 times of contrast medicament 25% Prochloraz missible oil and 25% bupirimate missible oil are 500 times is respectively 83.45% and 75.53%.
Embodiment 5
Following ingredients is mixed according to corresponding proportion:
Prochloraz 30%
The phonetic phenol 1% of second
No. 500 (emulsifier) 8% of farming breast
Nongru-700 number (emulsifier) 3%
Ethanol (cosolvent) 8%
Dimethylbenzene (solvent) complements to 100%
Promptly obtain the phonetic phenol missible oil of transparence 31% Prochloraz second after the dissolving.
Adopt the phonetic phenol missible oil of present embodiment Prochloraz second to prevent and treat the disease experiment, controlling object is a wheat powdery mildew, the sky and water, test site Gansu.Get above-mentioned missible oil according to 2500 times of dilution sprayings, 7 days control efficiency are 92.35% behind the medicine, and the preventive effect that 2000 times of contrast medicament 25% Prochloraz missible oil and the phonetic phenol missible oil of 25% second are 500 times is respectively 83.17% and 74.66%.
Embodiment 6
Following ingredients is mixed according to corresponding proportion:
Prochloraz 20%
Dimethirimol 2%
No. 500 (emulsifier) 8% of farming breast
Nongru-700 number (emulsifier) 3%
Ethanol (cosolvent) 8%
Dimethylbenzene (solvent) complements to 100%
Promptly obtain transparence 22% Prochloraz dimethirimol missible oil after the dissolving.
Adopt present embodiment Prochloraz dimethirimol missible oil to prevent and treat the disease experiment, controlling object is the dahlia powdery mildew, Kunming, test site Yunnan.Get above-mentioned missible oil according to 2000 times of dilution sprayings, 7 days control efficiency are 91.84% behind the medicine, and the preventive effect that 2000 times of contrast medicament 25% Prochloraz missible oil and 25% dimethirimol missible oil are 500 times is respectively 82.47% and 74.25%.
Embodiment 7
Former medicine is mixed pulverizing with powder carrier, wetting spreader-sticker and binding agent etc.; again after water is mediated; add in the comminutor that the certain specification screen cloth is housed and carry out granulation, and then drying, screening (pressing the screen cloth scope) promptly get Prochloraz bupirimate water-dispersible granules.For example following prescription:
Prochloraz 5%
Bupirimate 50%
Lauryl sodium sulfate 4%
Polycarboxylate 8%
Ammonium sulfate 4%
Kaolin complements to 100%
Adopt the Prochloraz bupirimate water-dispersible granules of present embodiment to prevent and treat the disease experiment, controlling object is a grape powdery mildew, and test site is a yiyang, hunan.Get above-mentioned water-dispersible granules according to 3500 times of dilution sprayings, 7 days control efficiency are 96.23% behind the medicine, and the preventive effect of 2000 times of contrast medicament 25% Prochloraz missible oil, 500 times of 25% bupirimate missible oil is respectively 85.57%, 76.49%.
Embodiment 8
Except that prescription, present embodiment and embodiment 7 compound methods are basic identical.It is as follows to fill a prescription:
Prochloraz 2%
The phonetic phenol 78% of second
Lauryl sodium sulfate 4%
Polycarboxylate 8%
Ammonium sulfate 4%
Bentonite complements to 100%
Adopt the phonetic phenol water-dispersible granules of Prochloraz second of present embodiment to prevent and treat the disease experiment, controlling object is a wheat powdery mildew, and test site is Hengshui, Hebei.Get above-mentioned water-dispersible granules according to 4000 times of dilution sprayings, 7 days control efficiency are 92.26% behind the medicine, and the preventive effect of 2000 times of contrast medicament 25% Prochloraz missible oil, 500 times of the phonetic phenol missible oil of 25% second is respectively 83.15%, 74.31%.
Embodiment 9
Except that prescription, present embodiment and embodiment 7 compound methods are basic identical.It is as follows to fill a prescription:
Prochloraz 0.5%
Dimethirimol 25%
Lauryl sodium sulfate 4%
Polycarboxylate 8%
Ammonium sulfate 4%
Attapulgite complements to 100%
Adopt the Prochloraz dimethirimol water-dispersible granules of present embodiment to prevent and treat the disease experiment, controlling object is the rose powdery mildew, and test site is Guang Zhouchen village, Guangdong.Get above-mentioned water-dispersible granules according to 2000 times of dilution sprayings, 7 days control efficiency are 93.28% behind the medicine, and the preventive effect of 2000 times of contrast medicament 25% Prochlorazs, 500 times of 25% dimethirimol missible oil is respectively 82.43%, 73.65%.
Embodiment 10
Former medicine, solvent, emulsifier added with co-emulsifier be in the same place, make and be dissolved into even oil phase.Water, antifreeze etc. is mixed, becomes the homogeneous water.Under high-speed stirred, water is joined oil phase or oil phase is joined water, form the aqueous emulsion of favorable dispersibility.It is as follows to fill a prescription:
Prochloraz 15%
The phonetic phenol 3% of second
Polyvinyl alcohol (dispersing binder) 2%
Alkylaryl polyoxyethylene poly-oxygen propylene aether (emulsifier) 3.5%
No. 2201 (emulsifier) 5% of farming breast
Dimethyl formamide (solvent) 12%
Ethylene glycol (antifreezing agent) 4%
Organosilicon (defoamer) 0.4%
Water complements to 100%
Adopt the Prochloraz ethirimol emulsion in water of present embodiment to prevent and treat the disease experiment, controlling object is a wheat powdery mildew, and test site is the Baoding.Get above-mentioned suspending agent according to 2000 times of dilution sprayings, 7 days control efficiency are 92.43% behind the medicine, and the preventive effect of 2000 times of contrast medicament 25% Prochloraz missible oil, 500 times of the phonetic phenol missible oil of 25% second is respectively 81.32%, 73.57%.
Embodiment 11
Except that prescription, present embodiment and embodiment 10 compound methods are basic identical.It is as follows to fill a prescription:
Prochloraz 20%
Bupirimate 2%
Polyvinyl alcohol (dispersing binder) 2%
Alkylaryl polyoxyethylene poly-oxygen propylene aether (emulsifier) 3.5%
No. 2201 (emulsifier) 5% of farming breast
Dimethyl formamide (solvent) 12%
Ethylene glycol (antifreezing agent) 4%
Organosilicon (defoamer) 0.4%
Water complements to 100%
Adopt the Prochloraz bupirimate aqueous emulsion of present embodiment to prevent and treat the disease experiment, controlling object is a melon powdery mildew, and test site is Zhaoqing, Guangdong.Get above-mentioned suspending agent according to 2000 times of dilution sprayings, 7 days control efficiency are 94.17% behind the medicine, and the preventive effect of 2500 times of contrast medicament 25% Prochloraz missible oil, 500 times of 25% bupirimate missible oil is respectively 83.52%, 75.36%.
Embodiment 12
Except that prescription, present embodiment and embodiment 10 compound methods are basic identical.It is as follows to fill a prescription:
Prochloraz 1%
Dimethirimol 30%
Polyvinyl alcohol (dispersing binder) 2%
Alkylaryl polyoxyethylene poly-oxygen propylene aether (emulsifier) 3.5%
No. 2201 (emulsifier) 5% of farming breast
Dimethyl formamide (solvent) 12%
Ethylene glycol (antifreezing agent) 4%
Organosilicon (defoamer) 0.4%
Water complements to 100%
Adopt the Prochloraz dimethirimol aqueous emulsion of present embodiment to prevent and treat the disease experiment, controlling object tobacco powdery mildew, test site are the Dali.Get above-mentioned suspending agent according to 2000 times of dilution sprayings, 7 days control efficiency are 92.39% behind the medicine, and the preventive effect of 2000 times of contrast medicament 25% Prochloraz missible oil, 500 times of 25% dimethirimol missible oil is respectively 81.47%, 74.63%.
Embodiment 13
Former medicine, solvent, emulsifier etc. are added together, make and be dissolved into even oil phase, be added to the water, stirring is mixed with Prochloraz bupirimate microemulsion.It is as follows to fill a prescription:
Prochloraz 4.5%
Bupirimate 0.5%
Ethanol (solvent) 4%
No. 500 (emulsifier) 2% of farming breast
Soluble starch (emulsifier) 1%
Epoxidized soybean oil (stabilizing agent) 0.5%
Castor oil polyoxyethylene polyethenoxy ether (emulsifier) 0.5%
Water complements to 100%
Adopt the Prochloraz bupirimate microemulsion of present embodiment to prevent and treat the disease experiment, controlling object is a powdery mildew of strawberry, test site ShenZhen,GuangDong Long Gang, get above-mentioned microemulsion according to 600 times of dilution sprayings, 7 days control efficiency are 93.28% behind the medicine, and the preventive effect that 1000 times of contrast medicament 25% Prochloraz missible oil and 25% bupirimate missible oil are 500 times is respectively 84.37% and 73.51%.
Embodiment 14
Former medicine, solvent, emulsifier etc. are added together, make and be dissolved into even oil phase, be added to the water, stirring is mixed with the phonetic phenol microemulsion of Prochloraz second.It is as follows to fill a prescription:
Prochloraz 9%
The phonetic phenol 0.3% of second
Ethanol (solvent) 4%
No. 500 (emulsifier) 2% of farming breast
Soluble starch (emulsifier) 1%
Epoxidized soybean oil (stabilizing agent) 0.5%
Castor oil polyoxyethylene polyethenoxy ether (emulsifier) 0.5%
Water complements to 100%
Adopt the phonetic phenol microemulsion of Prochloraz second of present embodiment to prevent and treat the disease experiment, controlling object is a wheat powdery mildew, Zhengzhou, test site Henan, get above-mentioned microemulsion according to 1000 times of dilution sprayings, 7 days control efficiency are 94.12% behind the medicine, and the preventive effect that 1000 times of contrast medicament 25% Prochloraz missible oil and the phonetic phenol missible oil of 25% second are 500 times is respectively 85.29% and 73.46%.
Embodiment 15
Former medicine, solvent, emulsifier etc. are added together, make and be dissolved into even oil phase, be added to the water, stirring is mixed with Prochloraz dimethirimol microemulsion.It is as follows to fill a prescription:
Prochloraz 0.5%
Dimethirimol 10%
Ethanol (solvent) 4%
No. 500 (emulsifier) 2% of farming breast
Soluble starch (emulsifier) 1%
Epoxidized soybean oil (stabilizing agent) 0.5%
Castor oil polyoxyethylene polyethenoxy ether (emulsifier) 0.5%
Water complements to 100%
Adopt the Prochloraz dimethirimol microemulsion of present embodiment to prevent and treat the disease experiment, controlling object is the fresh kidney beans powdery mildew, Sanya, test site Hainan, get above-mentioned microemulsion according to 1000 times of dilution sprayings, 7 days control efficiency are 94.58% behind the medicine, and the preventive effect that 1000 times of contrast medicament 25% Prochloraz missible oil and 25% dimethirimol missible oil are 500 times is respectively 85.13% and 76.37%.
Campaign shows that the control efficiency of above-mentioned prescription all is better than single agent kind, significant difference.Show that said composition has excellent synergistic effect, can reduce the formulation rate of agricultural chemicals simultaneously.
Biological activity determination
1, indoor biological activity determination
1.1 the potted plant biological activity determination of powdery mildew of cucumber (Sphaerotheca fuliginea)
Select the potted plant cucumber seedling of growth neat and consistent, cut growing point and keep 2 true leaves, write tag number with marking pen, insert in the potted plant seedling, discharging is for experiment according to the order of sequence.
To try the material 24h that dries in the shade in the greenhouse after the cauline leaf reagent spray is handled, every concentration is handled 5 repetitions, establishes clear water and contrasts.
Conidial suspension (spore concentration 2-3.0 * 10 of inoculation powdery mildew of cucumber bacterium after 24h is handled in spraying
5Individual/ml).With inoculation sprayer (pressure 0.1MPa) even spraying inoculation on the cucumber seedling blade.Postvaccinal examination material moves in the phytotron, keeps 18-25 ℃ of temperature, and backsight blank incidence carried out the classification investigation in five days.
Grade scale:
0 grade of onset area accounts for the ratio 0 of the blade gross area
1 grade of onset area accounts for ratio≤5% of the blade gross area
3 utmost point onset areas account for the ratio 6%-10% of the blade gross area
5 grades of onset areas account for the ratio 11%-20% of the blade gross area
7 grades of onset areas account for the ratio 21%-40% of the blade gross area
9 grades of onset areas account for ratio＞40% of the blade gross area
The drug effect computational methods:
CK1: disease index after the blank dispenser; PT1: disease index after the chemicals treatment dispenser.
With each logarithm value of handling effective ingredient concentration (μ g/ml) is independent variable X, and the probit value that preventive effect changes into is dependent variable Y, uses the expert data DPS of statistical software to handle, concentration EC in calculating the virulence regression equation formula and suppressing
50
Calculate the toxicity index of each medicament and the co-toxicity coefficient of mixture (CTC value) according to the abundant method of Sun Yun, CTC≤80 are antagonism, and 80＜CTC＜120 are summation action, and CTC 〉=120 are synergistic effect.
Toxicity Determination the results are shown in Table 1.As can be seen from Table 1, Prochloraz and bupirimate were mixed between 30: 1～1: 50, and the powdery mildew of cucumber bacterium is all had obvious synergistic effect.
The composite results from pot experiment test of table 1 Prochloraz and bupirimate to powdery mildew of cucumber
| Medicament and proportioning | Concentration EC in the inhibition 50(ug/ml) | Co-toxicity coefficient (CTC) |
| Prochloraz (A) | 6.82 | / |
| Bupirimate (B) | 11.35 | / |
| A∶B(30∶1) | 4.85 | 142.45 |
| A∶B(20∶1) | 4.97 | 139.88 |
| A∶B(10∶1) | 5.12 | 138.22 |
| A∶B(5∶1) | 5.29 | 138.11 |
| A∶B(1∶1) | 5.46 | 156.05 |
| A∶B(1∶5) | 5.83 | 175.28 |
| A∶B(1∶10) | 6.12 | 174.89 |
| A∶B(1∶20) | 6.24 | 176.31 |
| A∶B(1∶30) | 6.49 | 171.22 |
| A∶B(1∶40) | 6.62 | 168.72 |
| A∶B(1∶50) | 6.75 | 165.99 |
1.2 the indoor biological activity determination of wheat powdery mildew (Erysiphe graminis)
Select 3-4 potted plant wheat seedling of leaf phase, write the tag number that each is handled with marking pen, insert in the potted plant seedling, discharging is for experiment according to the order of sequence.
To try the material 24h that dries in the shade in the greenhouse after the blade reagent spray is handled, every concentration is handled 5 repetitions, establishes clear water and contrasts.
After handling 24h, spraying evenly trembles the conidium of powder inoculation wheat powdery mildew.Postvaccinal examination material moves in the phytotron, keeps 18-22 ℃ of temperature, and backsight blank incidence carried out the classification investigation in five days.
Grade scale:
0 grade of onset area accounts for the ratio 0 of the blade gross area
1 grade of onset area accounts for ratio≤5% of the blade gross area
3 utmost point onset areas account for the ratio 6%-10% of the blade gross area
5 grades of onset areas account for the ratio 11%-20% of the blade gross area
7 grades of onset areas account for the ratio 21%-40% of the blade gross area
9 grades of onset areas account for ratio＞40% of the blade gross area
The drug effect computational methods:
CK1: disease index after the blank dispenser; PT1: disease index after the chemicals treatment dispenser.
With each logarithm value of handling effective ingredient concentration (μ g/ml) is independent variable X, and the probit value that inhibiting rate changes into is dependent variable Y, uses the expert data DPS of statistical software to handle, and obtains concentration EC in virulence regression equation formula and the inhibition
50
Calculate the toxicity index of each medicament and the co-toxicity coefficient of mixture (CTC value) according to the abundant method of Sun Yun, CTC≤80 are antagonism, and 80＜CTC＜120 are summation action, and CTC 〉=120 are synergistic effect.
As can be seen from Table 2, the phonetic phenol of Prochloraz and second was mixed between 30: 1～1: 50, and wheat powdery mildew is all had obvious synergistic effect.
The composite results from pot experiment test of the phonetic phenol of table 2 Prochloraz and second to wheat powdery mildew
| Medicament and proportioning | Concentration EC in the inhibition 50(ug/ml) | Co-toxicity coefficient (CTC) |
| Prochloraz (A) | 5.43 | / |
| The phonetic phenol of second (B) | 10.27 | / |
| A∶B(30∶1) | 3.78 | 145.87 |
| A∶B(20∶1) | 3.89 | 142.79 |
| A∶B(10∶1) | 4.03 | 140.77 |
| A∶B(5∶1) | 4.17 | 141.32 |
| A∶B(1∶1) | 4.32 | 164.44 |
| A∶B(1∶5) | 4.57 | 195.66 |
| A∶B(1∶10) | 4.68 | 202.99 |
| A∶B(1∶20) | 4.79 | 205.67 |
| A∶B(1∶30) | 4.93 | 202.49 |
| A∶B(1∶40) | 5.15 | 195.17 |
| A∶B(1∶50) | 5.28 | 191.17 |
1.3 the potted plant biological activity determination of flowers powdery mildew (Sphaerotheca pannosa)
Select not send out the potted plant Chinese rose of powdery mildew, write tag number with marking pen, insert in the potted plant seedling, discharging is for experiment according to the order of sequence.
To try the material 24h that dries in the shade in the greenhouse after the cauline leaf reagent spray is handled, every concentration is handled 5 repetitions, establishes clear water and contrasts.
Conidial suspension (spore concentration 2-3.0 * 10 of inoculation flowers white powder germs (rose Sphaerotheca) after 24h is handled in spraying
5Individual/ml).With inoculation sprayer (pressure 0.1MPa) even spraying inoculation on blade.Postvaccinal examination material moves in the phytotron, keeps 18-25 ℃ of temperature, and backsight blank incidence carried out the classification investigation in five days.
Grade scale:
0 grade of onset area accounts for the ratio 0 of the blade gross area
1 grade of onset area accounts for ratio≤5% of the blade gross area
3 utmost point onset areas account for the ratio 6%-10% of the blade gross area
5 grades of onset areas account for the ratio 11%-20% of the blade gross area
7 grades of onset areas account for the ratio 21%-40% of the blade gross area
9 grades of onset areas account for ratio＞40% of the blade gross area
The drug effect computational methods:
CK1: disease index after the blank dispenser; PT1: disease index after the chemicals treatment dispenser.
With each logarithm value of handling effective ingredient concentration (μ g/ml) is independent variable X, and the probit value that preventive effect changes into is dependent variable Y, uses the expert data DPS of statistical software to handle, concentration EC in calculating the virulence regression equation formula and suppressing
50
Calculate the toxicity index of each medicament and the co-toxicity coefficient of mixture (CTC value) according to the abundant method of Sun Yun, CTC≤80 are antagonism, and 80＜CTC＜120 are summation action, and CTC 〉=120 are synergistic effect.
Toxicity Determination the results are shown in Table 3.As can be seen, Prochloraz and dimethirimol were mixed between 30: 1～1: 50, and flowers white powder germ is all had obvious synergistic effect.
The composite results from pot experiment test of table 3 Prochloraz and dimethirimol to the flowers powdery mildew
| Medicament and proportioning | Concentration EC in the inhibition 50(ug/ml) | Co-toxicity coefficient (CTC) |
| Prochloraz (A) | 8.19 | / |
| Dimethirimol (B) | 15.32 | / |
| A∶B(30∶1) | 5.82 | 142.87 |
| A∶B(20∶1) | 5.97 | 140.29 |
| A∶B(10∶1) | 6.18 | 138.38 |
| A∶B(5∶1) | 6.35 | 139.82 |
| A∶B(1∶1) | 6.58 | 162.22 |
| A∶B(1∶5) | 6.72 | 199.09 |
| A∶B(1∶10) | 6.87 | 206.64 |
| A∶B(1∶20) | 7.02 | 209.55 |
| A∶B(1∶30) | 7.25 | 205.54 |
| A∶B(1∶40) | 7.43 | 201.90 |
| A∶B(1∶50) | 7.61 | 197.94 |
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1. a composition pesticide is characterized in that, active component wherein is A and B, and A is a Prochloraz, and B is the phonetic phenol of second or bupirimate or dimethirimol, and the ratio of weight and number of A and B is 30: 1～1: 50.
2. composition pesticide according to claim 1 is characterized in that, described active components A and B ratio of weight and number are 1: 5～1: 50.
3. according to each described composition pesticide of claim 1 to 2, it is characterized in that described combination dosage form is wetting powder, water-dispersible granules, missible oil, microemulsion, aqueous emulsion.
4. composition pesticide according to claim 1 is characterized in that, the cumulant of described active components A and B is 5～80% of a composition total weight.
5. the application of the composition pesticide described in the claim 1 in each fruit trees powdery mildew of control, vegetables powdery mildew, cereal class powdery mildew, flowers powdery mildew.
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| US20030130290A1 (en) * | 1997-01-12 | 2003-07-10 | Kaspar Muller | Fungicidal combinations comprising thieno[2,3-d]pyrimidin-4-one |
| CN101087531A (en) * | 2004-12-24 | 2007-12-12 | 拜尔农作物科学股份公司 | Insecticides based on selected neonicotinoids and strobilurins |
| CN101522031A (en) * | 2006-09-30 | 2009-09-02 | 拜尔农作物科学股份公司 | Suspension concentrates |
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| US20030130290A1 (en) * | 1997-01-12 | 2003-07-10 | Kaspar Muller | Fungicidal combinations comprising thieno[2,3-d]pyrimidin-4-one |
| CN101087531A (en) * | 2004-12-24 | 2007-12-12 | 拜尔农作物科学股份公司 | Insecticides based on selected neonicotinoids and strobilurins |
| CN101522031A (en) * | 2006-09-30 | 2009-09-02 | 拜尔农作物科学股份公司 | Suspension concentrates |
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| 赵怡红等.咪鲜胺类要急防治水稻恶苗病田间药效试验.《宁夏农林科技》.2007,第34-35页. * |
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