Technical background
Propineb (propineb) belongs to dithiocarbamate fungicide, and pure article are the white powder that has a little special odor.Stable under drying condition, under moist, acid, alkali condition, decompose.Molecular formula: (C
5H
8N
2S
4Zn)
x, chemical name: acrylic bisdithiocarbamic zinc.Propineb is a kind of protection type bactericide of quick-acting long residual wide spectrums; Its bactericidal mechanism is unfixing; Site of action is many; The main oxidation that suppresses pyruvic acid in the cause of disease thalline all has good protective effect to morning, the late blight of downy mildew, tomato and the potato of crops such as vegetables, grape, tobacco and lupulus, and the disease of powdery mildew, rust and Botrytis is also had certain inhibitory action.
Fluoxastrobin (Azoxystorbin) is a kind of brand-new β methoxy acrylic acid lipid bactericide, is by Syngenta Co.,Ltd's development product.Former medicine outward appearance is the light brown solid, no special odor.Molecular formula: C
22H
17N
3O
5, chemical name: (E)-2-{2-[6 (2-cyano-benzene oxygen) pyrimidine-4-base oxygen] phenyl }-the 3-methoxy acrylate.Fluoxastrobin belongs to the mitochondrial respiratory inhibitor, has protection, treats and root out triple function, destroys synthetic its loss of life power that makes of energy of bacterium through the respiration that suppresses germ.Fluoxastrobin has good crop safety and very outstanding Environmental compatibility.Efficiently, wide spectrum, nearly all mycota (Ascomycotina, Basidiomycotina, Mastigomycotina and Deuteromycotina) disease such as powdery mildew, rust, glume blight, net blotch, downy mildew, rice blast etc. are all had good activity.Can be used for cauline leaf spraying, seed treatment, also can carry out soil treatment, be mainly used in cereal, paddy rice, peanut, grape, potato, fruit tree, vegetables, coffee etc.
No matter be Propineb or Fluoxastrobin, the same with many bactericide efficient, wide spectrum.Long-term a large amount of single use all can make disease develop immunity to drugs, and increases usage amount, strengthens the control cost, produces a series of environmental problem simultaneously.A way that addresses this problem is carried out composite with regard to the bactericide that is to use different effects mechanism, this method can not only reduce the agricultural chemicals usage amount, improves the practical function effect, can also delay viral drug-fast generation.
Composite about between Propineb and these two kinds of active ingredients of Fluoxastrobin do not see relevant report at present at home and abroad as yet.These two kinds of compositions carry out composite, have certain novelty and uniqueness.
Summary of the invention
The objective of the invention is provides the bactericidal composition with synergistic function that contains Propineb and Fluoxastrobin that a kind of bactericidal range is wide, use cost is low, practical effect is good to technical problem mentioned above.
The present invention realizes through following technical scheme:
A kind of bactericidal composition that contains Propineb and Fluoxastrobin is characterized in that: Propineb and Fluoxastrobin percentage by weight are 5~80: 40~1.
The described bactericidal composition that contains Propineb and Fluoxastrobin, the active component percentage by weight after preferred is 10~70: 30~5.
The described bactericidal composition that contains Propineb and Fluoxastrobin, the effective active composition adds auxiliary agent and excipients is processed wetting powder, water dispersible granules, suspending agent.
Described auxiliary agent and excipients are selected from: one or more in dispersant, wetting agent, disintegrant, antifreeze, antifoaming agent, thickener, filler or the deionized water.
Described dispersant is selected from polycarboxylate, lignosulfonates, the phonetic formaldehyde condensation products sulphate of alkylphenol-polyethenoxy, alkyl benzene sulfonate calcium salt, naphthalene sulfonic acid-formaldehyde condensation product sodium salt, alkylphenol-polyethenoxy is phonetic, aliphatic amine polyoxyethylene is phonetic, in phonetic one or more of polyoxyethylene carboxylate, fatty acid glyceride polyoxyethylene.
Described wetting agent is selected from: one or more in lauryl sodium sulfate, DBSA, Nekal BX, wetting and penetrating agent F, spaonin powder, silkworm excrement, the soapberry powder.
Described disintegrant is selected from: one or more in bentonite, urea, ammonium sulfate, aluminium chloride, citric acid, succinic acid, the sodium bicarbonate.
Described antifreeze is selected from: one or more in ethylene glycol, propane diols, the glycerine.
Described antifoaming agent is selected from: one or more in silicone oil, silicone compound, C10-20 saturated fat acid compounds, the C8-10 aliphatic alcohols compound.
Described thickener is selected from: one or more in xanthan gum, CMC, hydroxyethylcellulose, methylcellulose, Magnesiumaluminumsilicate, polyvinyl alcohol, the polyethylene glycol.
Described filler is selected from: one or more in kaolin, diatomite, bentonite, attapulgite, white carbon, starch, the precipitated calcium carbonate.
The bactericidal composition that the present invention contains Propineb and Fluoxastrobin is mainly used in prevents and treats early blight of tomato, cucumber downy mildew, alternaria leaf spot of apple, sigatoka.
Beneficial effect of the present invention: the used Propineb of (1) the present invention is a dithiocarbamate fungicide, and Fluoxastrobin is a β methoxy acrylic acid lipid bactericide; Both are mixed each other and can produce conflict, have reduced dosage, have enlarged fungicidal spectrum, have reduced cost.(2) the present invention makes up drug effect than each composition drug effect of use is high separately, and scope of application increase, is applicable to control cereal class, fruit tree and vegetable crop disease.Especially the disease of crops such as tomato, cucumber, apple, banana.
Embodiment
The present invention is explained further that the percentage among the embodiment all is weight percentage below in conjunction with embodiment, the treatment dosage of biologically-active moiety is active constituent content, but the present invention is not limited thereto.
The embodiment of the invention is the method that adopts Toxicity Determination and field trial to combine.Pass through Toxicity Determination earlier, the synergy ratio (SR) after clear and definite two kinds of medicaments are composite by a certain percentage, SR<0.5 is an antagonism, and 0.5≤SR≤1.5 are summation action, and SR>1.5 are synergistic effect.On this basis, carry out field trial again.
Practice example one and implement the prescription example
Embodiment 180% Propineb Fluoxastrobin wetting powder
Propineb 50%, Fluoxastrobin 30%, lignosulfonates 4%, polycarboxylate 3%, neopelex 4%, white carbon 9%, mixture carries out comminution by gas stream, makes 80% Propineb Fluoxastrobin wetting powder.
Embodiment 250% Propineb Fluoxastrobin wetting powder
Propineb 44%, Fluoxastrobin 6%, polycarboxylate 4%, DBSA 4%, white carbon 5%, kaolin 37%, mixture carries out comminution by gas stream, makes 50% Propineb Fluoxastrobin wetting powder.
Embodiment 325% Propineb Fluoxastrobin wetting powder
Propineb 20%, Fluoxastrobin 5%, alkyl benzene sulfonate calcium salt 4%, spaonin powder 5%, white carbon 8%, kaolin 58%, mixture carries out comminution by gas stream, makes 25% Propineb Fluoxastrobin wetting powder.
Embodiment 480% Propineb azoxystrobin water dispersible granule
Propineb 70%, Fluoxastrobin 10%, alkylphenol-polyethenoxy are phonetic 3.5%, polycarboxylate 3%, lauryl sodium sulfate 4.5%, starch 9%, mixed 80% Propineb azoxystrobin water dispersible granule.
Embodiment 570% Propineb azoxystrobin water dispersible granule
Propineb 57%, Fluoxastrobin 13%, polyoxyethylene carboxylate 4%, polycarboxylate 3%, lauryl sodium sulfate 5%, urea 2%, starch 16%, the mixed 70% Propineb azoxystrobin water dispersible granule that gets.
Embodiment 630% Propineb azoxystrobin water dispersible granule
Propineb 26%, Fluoxastrobin 4%, lignosulfonates 5%, spaonin powder 4%, ammonium sulfate 2%, starch 10%, kaolin 49%, the mixed 30% Propineb azoxystrobin water dispersible granule that gets.
Embodiment 740% Propineb Fluoxastrobin suspending agent
Propineb 35%, Fluoxastrobin 5%, lignosulfonates 4%, soapberry powder 4%, silicone oil 0.06%, polyvinyl alcohol 0.2%, deionized water add to 100%, the mixed 40% Propineb Fluoxastrobin suspending agent that gets.
Embodiment 830% Propineb Fluoxastrobin suspending agent
Propineb 27%, Fluoxastrobin 3%, alkyl benzene sulfonate calcium salt 4%, silkworm excrement 5%, silicone oil 0.08%, xanthan gum 0.3%, glycerine 2% deionized water add to 100%, the mixed 30% Propineb Fluoxastrobin suspending agent that gets.
Embodiment 915% Propineb Fluoxastrobin suspending agent
Propineb 13%, Fluoxastrobin 2%, polycarboxylate 5%, lauryl sodium sulfate 4%, silicone oil 0.08%, hydroxyethylcellulose 0.2%, ethylene glycol 2%, deionized water adds to 100%, the mixed 15% Propineb Fluoxastrobin suspending agent that gets.
Practice example two: Propineb and Fluoxastrobin are mixed to the sigatoka Toxicity Determination
This EE is in plant protection institute of Shandong Agricultural University, and after the effective inhibition concentration scope of each medicament was confirmed in prerun, each medicament was established 5 dosage respectively by active constituent content and handled, and established the clear water contrast.Carry out with reference to " agricultural chemicals indoor bioassay test rule bactericide ", adopt the mycelial growth rate method to measure the virulence of medicament sigatoka.Measure colony diameter with the right-angled intersection method behind the 96h, calculate and respectively handle clean amount of growth, mycelial growth inhibition rate.Result of the test is as shown in table 1:
Table 1 Propineb, Fluoxastrobin and use toxicity test analysis of results table with to sigatoka
Can know that by table 1 Propineb, Fluoxastrobin are to the EC of sigatoka
50Be respectively 11.74mg/L and 2.75mg/L.The virulence of Fluoxastrobin is higher than the virulence of Propineb.1: 1,4: 1,7: 1,10: 1,13: 1 synergy ratio of Propineb and Fluoxastrobin proportioning is respectively 1.07,1.84,2.13,1.98,1.48, and both proportionings are to show as certain synergistic effect at 4: 1,7: 1,10: 1 o'clock.
Embodiment uses three Propinebs and the Fluoxastrobin control alternaria leaf spot of apple test of pesticide effectiveness that is mixed
This EE is plant protection unit in the Pucheng County, Shaanxi Province, and test medicine is researched and developed, provided by Shaanxi Pucheng County Meibang Pesticide Co., Ltd., contrast medicament 70% Wettable propineb powder (commercial), 25% Fluoxastrobin suspending agent (commercial).
The apple disease index is calculated in investigation before the medicine, and dispenser in per 7 days once is total to dispenser 3 times.Investigate disease indexs in 7 days, 30 days after the last dispenser and calculate preventive effect.Experimental result is as follows:
Table 2 Propineb, Fluoxastrobin and the control alternaria leaf spot of apple test of pesticide effectiveness that is mixed thereof
Handle medicament |
Extension rate |
7 days preventive effects (%) behind the last medicine |
30 days preventive effects (%) behind the last medicine |
80% Propineb Fluoxastrobin wetting powder |
4000 times |
70.39 |
84.72 |
70% Propineb azoxystrobin water dispersible granule |
3000 times |
69.27 |
86.45 |
30% Propineb Fluoxastrobin suspending agent |
800 times |
71.42 |
85.09 |
70% Wettable propineb powder |
800 times |
55.17 |
72.46 |
25% Fluoxastrobin suspending agent |
2000 times |
60.84 |
72.00 |
Can find out by table 2, ability effectively preventing alternaria leaf spot of apple behind Propineb and the azoxystrobin compound, control efficiency is superior to contrasting medicament, and the lasting period is long.In the test scope of medication, the target crop there is not harm.
Practice example four: Propineb and Fluoxastrobin are mixed and prevent and treat the early blight of tomato test of pesticide effectiveness
This EE is in Chen Zhuan town, Pucheng County, Shaanxi Province, and test medicine is researched and developed, provided by Shaanxi Pucheng County Meibang Pesticide Co., Ltd., contrast medicament 70% Wettable propineb powder (commercial), 25% Fluoxastrobin suspending agent (commercial).
The early blight of tomato state of an illness is calculated in investigation before the medicine, and in dispenser for the first time on June 3, dispenser in per 7 days once is total to dispenser 2 times.Investigate disease indexs in 7 days, 14 days after the last dispenser and calculate preventive effect.Experimental result is as follows:
Table 3 Propineb, Fluoxastrobin and be mixed and prevent and treat the early blight of tomato test of pesticide effectiveness
Handle medicament |
The preparation dosage |
7 days preventive effects (%) behind the last medicine |
20 days preventive effects (%) behind the last medicine |
50% Propineb Fluoxastrobin wetting powder |
60 gram/mus |
63.72 |
89.42 |
80% Propineb azoxystrobin water dispersible granule |
40 gram/mus |
68.45 |
88.74 |
15% Propineb Fluoxastrobin suspending agent |
150 gram/mus |
60.32 |
90.08 |
70% Wettable propineb powder |
120 gram/mus |
57.04 |
81.37 |
25% Fluoxastrobin suspending agent |
30 gram/mus |
62.27 |
85.12 |
Can find out by table 3, ability effectively preventing early blight of tomato behind Propineb and the azoxystrobin compound, control efficiency all is superior to contrasting medicament, in the test scope of medication, the target crop is not had harm.
Practice example five: Propineb and Fluoxastrobin are mixed and prevent and treat the cucumber downy mildew test of pesticide effectiveness
Test medicine provides by Shaanxi Pucheng County Meibang Pesticide Co., Ltd., and the cucumber downy mildew state of an illness is calculated in investigation before the medicine, and dispenser in per 7 days once is total to dispenser 2 times.Respectively with second time medicine before, 7 days, 20 days investigation disease indexs and calculate preventive effect behind the medicine for the second time.Experimental result is as follows:
Table 4 Propineb, Fluoxastrobin and the control cucumber downy mildew test of pesticide effectiveness that is mixed thereof
Handle medicament |
The preparation dosage |
Preventive effect (%) before the secondary medicine |
7 days preventive effects (%) behind the secondary medicine |
20 days preventive effects (%) behind the secondary medicine |
25% Propineb Fluoxastrobin wetting powder |
90 gram/mus |
42.71 |
69.05 |
87.45 |
30% Propineb azoxystrobin water dispersible granule |
80 gram/mus |
40.72 |
71.32 |
89.34 |
40% Propineb Fluoxastrobin suspending agent |
70 gram/mus |
39.55 |
71.55 |
86.50 |
70% Wettable propineb powder |
140 gram/mus |
23.09 |
60.41 |
65.44 |
25% Fluoxastrobin suspending agent |
40 gram/mus |
40.58 |
68.75 |
78.39 |
Can find out by table 4, ability effectively preventing cucumber downy mildew behind Propineb and the azoxystrobin compound, control efficiency all is superior to contrasting medicament, in the test scope of medication, the target crop is not had harm.