A kind of bactericidal composition and application thereof containing isopyrazam and kresoxim-methyl
Technical field:
The present invention relates to a kind of bactericidal composition and uses thereof, especially a kind of be main active bactericidal composition and the application thereof of isopyrazam and kresoxim-methyl.
Background technology
Isopyrazam (Isopyrazam), chemical name: 3-difluoromethyl-1-methyl-N-[1,2,3,4-tetrahydrochysene-9-(1-Methylethyl)-Isosorbide-5-Nitrae-methanonaphthalen-5-base]-1H-pyrazole-4-carboxamide, molecular formula C
20h
23f
2n
3o, isopyrazam (Isopyrazam) has following four kinds of isomer, and the present invention comprises any one or a few mixing, and chemical structural formula is as follows respectively:
Isopyrazam is developed by Syngenta Co., Ltd, this bactericide has broad spectrum of activity, all have the multiple diseases in various crop and outstanding prevent and treat performance, to triazole type and methoxy acrylic resistant strain germ efficient, especially very efficient to Septoria (Septoria) fungi, as being all better than epoxiconazole to the preventive effect of wheat rust and barley rust rot.This bactericide based on protective effect, but also demonstrates certain therapeutic action in field trial, and its lasting period is long, and dispenser still showed positive effect after 7 weeks, and the protection period is longer than triazole bactericidal agent about 2 weeks.The market orientation of isopyrazam comprises the disease on fruit tree, vegetables and cereal.
Kresoxim-methyl (Kresoxim-methyl), chemical name: (E)-2-methoxyimino-[2-(o-methyl-benzene oxygen ylmethyl) phenyl] methyl acetate, molecular formula is C
18h
19nO
4, structural formula:
The methoxy acrylic spectrum bactericide of kresoxim-methyl Shu Shi BASF Aktiengesellschaft exploitation, has protection, treats, roots out, permeates, systemic activity, has well suppression spore germination effect.Good effect is had to most of diseases that the pathomycetes such as Ascomycetes, Basidiomycetes, Fungi Imperfecti and oomycetes subclass cause.
Methoxy acrylic bactericide is the class new type bactericide kind occurred in recent years, it is one of major pharmaceutical agent kind of preventing and treating fungal disease in the market, market share amount is very large, such agent activity is high but action target is single, this also just result in the quick generation of germ resistance, such as such medicament of part is not equal to before in the control of powdery mildew, even if increasing dose can not play due effect, the composition research therefore carrying out such medicament and different mechanism medicament is extremely urgent.
The difficulty of prevention and cure of current phytopathogen is increasing, and on the one hand, along with the change of pattern of farming, disease occurrence degree, the generation quantity of melon and fruit, vegetables, cereal crop all increase, and are are objectively preventing and treating difficulty increasing; On the other hand, SM, under the medicament selection pressure continued, cause the resistance of pathogen to rise year by year, the control efficiency of single dose is had a greatly reduced quality; 3rd, the speed to introduce of current new varieties of pesticides obviously declines, and lacks new action target medicament; 4th, strict gradually due to environmental requirement, portioned product is limited to use, and causes medication selectivity to become less.In a word, how effective control plant disease is the important topic that vast plant protection work person faces.
Summary of the invention:
The object of the invention is for above-mentioned technical problem provide a kind of applied widely, cost is low, the effective plant bactericidal composition containing isopyrazam and kresoxim-methyl.
A further object of the invention is to provide this bactericidal composition and causes application on fungal disease at control sac fungi, basidiomycetes, imperfect fungus and Oomycete fungal, especially on the fungal diseases such as control rust, powdery mildew, leaf spot, net blotch, glume blight, leaf blight, downy mildew, epidemic disease purposes.
The object of the invention is to be realized by following measures:
A kind of bactericidal composition, it contains isopyrazam and kresoxim-methyl, and wherein isopyrazam and kresoxim-methyl weight ratio are 1 ~ 65:1 ~ 70, and wherein in bactericidal composition, effective ingredient is present in composition with enhancing effective amount.
Described bactericidal composition, wherein isopyrazam and kresoxim-methyl weight ratio are preferably 3 ~ 30:10 ~ 60, more preferably 3 ~ 20:10 ~ 30, most preferably 1:0.5 ~ 8.
In the compositions of the present invention, the percentage by weight accounting for composition both isopyrazam and kresoxim-methyl is 2-80%.Be preferably 4-70%, most preferably 30-35%.
Described bactericidal composition, wherein isopyrazam and kresoxim-methyl and known auxiliary agent and excipient are re-dubbed any one formulation that agricultural chemicals allows, the preferred missible oil of described formulation, suspending agent, wetting powder, aqueous emulsion, microemulsion and water dispersion granule.
These known auxiliary agents, excipients have emulsifier, wetting dispersing agent, suspending agent, defoamer, disintegrant, binding agent etc.
The aforementioned emulsifier that can be applicable in insecticides adjuvant of the present invention includes, but are not limited to calcium dodecyl benzene sulfonate, the rare block compound of polyoxyethylene polyoxy third, castor oil polyoxyethylene ether, alkylphenol polyoxyethylene polyethenoxy ether, Ben-zylphenol Polyoxyethyl Ether, phenethyl phenol polyethenoxy ether, fatty alcohol-polyoxyethylene ether, phenethyl phenol polyethenoxy ether polyethenoxy ether, alkylphenol polyoxyethylene formaldehyde condensation products etc., and the phosphate of above-mentioned wherein moieties and in and salt.Concrete kind as: agriculture breast 500# series, 600# is serial, 400# is serial, 1600# is serial, NP is serial, OP is serial, AEO is serial, By is serial, these dish series, TWEEN Series etc.
The aforementioned wetting dispersing agent that can be applicable in insecticides adjuvant of the present invention include, but are not limited in sodium lignin sulfonate, calcium lignosulfonate, alkylnaphthalene sulfonate, alkylnaphthalene sulfonate formaldehyde condensation products, Abietyl quaternary ammonium salt, alkylphenol polyoxyethylene phosphate, saponin, the withered powder of tea, fatty alcohol polyoxyethylene ether sulfate, lauryl sodium sulfate, neopelex, polycarboxylic acid salt and high molecular comb shape compound etc. one or more.
It is aforementioned that to can be applicable to excipient of the present invention be one or more in water, solvent or filler.
Described solvent includes, but are not limited to one or more of toluene, dimethylbenzene, solvent naphtha series, mixed methylnaphthalene, turpentine oil, vegetable oil, methyl oleate, carrene, chloroform, methyl alcohol, ethanol, isopropyl alcohol, n-butanol, cyclohexanone, isophorone, pyrrolidones, tetrahydrofurfuryl alcohol, acetic acid dimethyl ester, acetophenone, ethyl acetate, DMF, dimethyl sulfoxide (DMSO) etc.
Described filler is selected from one or more of white carbon, kaolin, precipitated calcium carbonate, diatomite, corn starch, quartz sand, talcum powder, ammonium sulfate, sodium sulphate, sodium chloride, potassium chloride etc.
As required, also the functional aids such as antifreezing agent, thickener, stabilizing agent, defoamer can be added
Described antifreezing agent is selected from one or more of ethylene glycol, propane diols, urea, diethylene glycol (DEG), glycerine etc.
Described thickener be selected from xanthans, polyvinyl alcohol, bentonite, CMC, aluminium-magnesium silicate one or more.
Described bactericidal composition, its formulation is missible oil, suspending agent, suspension emulsion, wetting powder, aqueous emulsion, microemulsion and water dispersion granule.
The application of described bactericidal composition in control cereal diseases.
Beneficial effect of the present invention:
1, the isopyrazam that the present invention is used is novel pyrazole acid amides bactericide, and kresoxim-methyl is wide spectrum methoxy acrylic bactericide, and mutual mixture can not produce low touching, can Synergistic, reduces dosage, reduces costs.
2, the present composition scope of application increases, be applicable to the crop pest of preventing and treating Cereal, various melon and fruit, vegetables, particularly prevent and treat the crop pests such as paddy rice, wheat, barley, capsicum, banana, mango, pineapple, cucumber, tomato, as wheat rust, wheat powdery mildew, large wheat rust, wheat net blotch, capsicum epidemic disease, wheat leaf blight, beet powdery mildew etc.
Bactericidal composition of the present invention has good control efficiency to sac fungi, basidiomycetes, imperfect fungus and Oomycete fungal disease; Because Synergistic causes consumption to reduce, can unitary agent (isopyrazam and kresoxim-methyl arbitrary) be developed immunity to drugs Antifungi.
The application of bactericidal composition of the present invention on preparation control refractory fungal, especially all has significant effect in the application of control rust, powdery mildew, leaf spot, net blotch, glume blight, leaf blight, downy mildew, epidemic disease.Above-mentioned bactericidal composition can produce higher synergistic function, and the consumption of the independent reactive compound of the amount ratio of this mixture reduces greatly, and namely the activity of mixture is greater than the activity of independent component." % " of the present invention is mass percent.
Compared with prior art beneficial effect of the present invention: (1) is compared with single dose, said composition antagonism fungal disease such as the fungal diseases such as rust, powdery mildew, leaf spot, net blotch, glume blight, leaf blight, downy mildew, epidemic disease have obvious synergistic function, overcome and delayed pesticide resistance, expanding prevention is composed, and significantly improves control efficiency; (2) control recruitment, drug cost is reduced; (3) alternative routine and the easy agricultural chemicals producing resistance; (4) compared with single dose, produce and use cost reduction; (5) the drug-fast generation of Antifungi, its successful uses higher than its single dose.
Embodiment
Below in conjunction with embodiment, the invention will be further described, and in embodiment, the preparation method of formulation is conventional laboratory's formulation method.
Two kinds of reactive compounds can be processed into any one formulation of permission, with specific embodiment, the preparation that two kinds of active ingredients are processed into are described below, but the preparation that these two kinds of active components can be processed be not limited only to following listed by.
Embodiment 1:
By isopyrazam 3.3g, kresoxim-methyl 26.4g, sodium lignin sulfonate dispersant 6g, dispersing agent NNO (sodium methylene bis-naphthalene sulfonate) 4g, white carbon 5g, kaolin adds to 100g mixture and carries out air-flow crushing, and obtained principle active component weight percentage is 29.7% wetting powder.
Embodiment 2:
By isopyrazam 5g, kresoxim-methyl 25g, sodium lignin sulfonate dispersant 6g, dispersing agent NNO 4g, white carbon 5g, kaolin adds to 100g mixture and carries out air-flow crushing, and obtained principle active component weight percentage is 30% wetting powder.
Embodiment 3:
By isopyrazam 10g, kresoxim-methyl 20g, sodium lignin sulfonate dispersant 6g, dispersing agent NNO 4g, white carbon 5g, kaolin adds to 100g mixture and carries out air-flow crushing, and obtained principle active component weight percentage is 30% wetting powder.
Embodiment 4:
Take isopyrazam 15g, kresoxim-methyl 15g, sodium lignin sulfonate dispersant 6g, dispersing agent NNO 4g, white carbon 5g, kaolin adds to 100g mixture and carries out air-flow crushing, and obtained principle active component weight percentage is 30% wetting powder.
Embodiment 5:
Take isopyrazam 20g, kresoxim-methyl 10g, sodium lignin sulfonate dispersant 6g, dispersing agent NNO 4g, white carbon 5g, kaolin adds to 100g mixture and carries out air-flow crushing, and obtained principle active component weight percentage is 30% wetting powder.
Embodiment 6:
Take 1g isopyrazam, 5g kresoxim-methyl, phenethyl phenol polyethenoxy ether phosphate 3g, agriculture breast 33#2g, alkylphenol polyoxyethylene 1g, DMF13g, add water to 100g.The method above raw material being prepared routinely aqueous emulsion drops into the mixing of mixing kettle high speed, and making principle active component weight percentage is 6% isopyrazam-kresoxim-methyl aqueous emulsion.
Embodiment 7:
Take 50g isopyrazam, 20g kresoxim-methyl, sodium lignin sulfonate 8g, polycarboxylate salt dispersant 2g, lauryl sodium sulfate 1g, ammonium sulfate 5g, corn starch complement to 100g.The method above raw material being prepared routinely water dispersion granule first mixes, rear cross air-flow crushing, finally mediate granulation, making principle active component weight percentage is 70% isopyrazam-kresoxim-methyl water dispersion granule.
Embodiment 8:
Take 2g isopyrazam, 40g kresoxim-methyl, sodium lignin sulfonate 8g, polycarboxylate salt dispersant 2g, lauryl sodium sulfate 1g, ammonium sulfate 5g, corn starch complement to 100g.The method above raw material being prepared routinely water dispersion granule first mixes, rear cross air-flow crushing, finally mediate granulation, making principle active component weight percentage is 42% isopyrazam-kresoxim-methyl water dispersion granule.
Embodiment 9:
Take 5g isopyrazam, 20g kresoxim-methyl, calcium dodecyl benzene sulfonate 6g, phenethyl phenol polyethenoxy ether phosphate 3g, agriculture breast 33#2g, alkylphenol polyoxyethylene 1g, isopropyl alcohol 10g, adds water to 100g.The method above raw material being prepared routinely microemulsion drops in mixing kettle and mixes, and making principle active component weight percentage is 25% isopyrazam-kresoxim-methyl microemulsion.
Embodiment 10:
Take 5g isopyrazam, 0.5g kresoxim-methyl, calcium dodecyl benzene sulfonate 6g, phenethyl phenol polyethenoxy ether 7g, vegetable oil are to 100g.The method above raw material being prepared routinely missible oil drops in mixing kettle and mixes, and making principle active component weight percentage is 5.5% isopyrazam-kresoxim-methyl missible oil.
Embodiment 11:
Take 5g isopyrazam, 30g kresoxim-methyl, lignin 2g, polyoxyethylene poly-oxygen propylene aether 4g, xanthans 0.15g, ethylene glycol 5g, silica ethane 0.10g, aluminium-magnesium silicate 0.5g, complement to 100g with water, under the effect of sand mill, make principle active component weight percentage is 35% isopyrazam-kresoxim-methyl suspending agent.
Embodiment 12:
Take 10g isopyrazam, 10g kresoxim-methyl, lignin 2g, polyoxyethylene poly-oxygen propylene aether 4g, xanthans 0.15g, ethylene glycol 5g, silica ethane 0.10g, aluminium-magnesium silicate 0.5g, complement to 100g with water, under the effect of sand mill, make principle active component weight percentage is 20% isopyrazam-kresoxim-methyl suspending agent.
Embodiment 13:
Take 30g isopyrazam, 12g kresoxim-methyl, lignin 2g, polyoxyethylene poly-oxygen propylene aether 4g, xanthans 0.15g, ethylene glycol 5g, silica ethane 0.10g, aluminium-magnesium silicate 0.5g, complement to 100g with water, under the effect of sand mill, make principle active component weight percentage is 42% isopyrazam-kresoxim-methyl suspending agent.
Embodiment 13:
Take 2g isopyrazam, 5g kresoxim-methyl, wooden sodium sulfonate 8g, lauryl sodium sulfate 2g, ammonium sulfate 5g, polyvinyl alcohol 5g, borax 2g, diatomite 28g complements to 100g, and it is 7% isopyrazam-kresoxim-methyl water dispersion granule that above raw material is made principle active component weight percentage by water dispersible granular agent method.
Embodiment 14:
Take 4g isopyrazam, 13g kresoxim-methyl, wooden sodium sulfonate 8g, lauryl sodium sulfate 2g, ammonium sulfate 5g, polyvinyl alcohol 5g, borax 2g, diatomite 28g complements to 100g, and it is 17% isopyrazam-kresoxim-methyl water dispersion granule that above raw material is made principle active component weight percentage by water dispersible granular agent method.
Embodiment 15:
Take 5g isopyrazam, 15g kresoxim-methyl, lignin 2g, polyoxyethylene poly-oxygen propylene aether 4g, xanthans 0.15g, ethylene glycol 5g, silica ethane 0.10g, aluminium-magnesium silicate 0.5g, complement to 100g with water, under the effect of sand mill, make principle active component weight percentage is 20% isopyrazam-kresoxim-methyl suspending agent.
Embodiment 16:
Indoor biometrics is tested:
In indoor with net blotch of barley (Pyrenophorateres (Sacc) Drechsler) for test strain, adopt mycelial growth rate method, measure different agents to concentration EC in the suppression of bacterial strain
50value, adopt the abundant co-toxicity coefficient computational methods of Sun Yun, calculate the co-toxicity coefficient (CTC) of mixture, determine the building performance of mixture, computational methods are as follows:
1. with single dose a certain in mixture for standard agent (selects EC usually
50junior), calculate:
2. single dose toxicity index=standard agent EC
50/ certain single dose EC in addition
50× 100
3. toxicity index × B single dose proportion in mixture of toxicity index × A single dose proportion+B single dose in mixture of theoretical toxicity index=A single dose.
4. survey the EC of toxicity index=standard single dose
50the EC of value/mixture
50value × 100
5. co-toxicity coefficient CTC=surveys toxicity index/theoretical toxicity index × 100
The value of mixture is evaluated according to the numerical value of CTC, CTC shows that mixture has synergetic when being greater than 120, CTC shows that mixture has Antagonism when being less than 80, CTC shows that between 80-120 mixture has summation action, generally speaking, the CTC>120 of mixture is the basic demand of agriculture chemical compounding research and development.
Indoor biometrics result is as follows:
Table 1: isopyrazam+kresoxim-methyl different ratio is to the indoor biometrics result of net blotch of barley
Medicament |
Virulence regression equation |
EC
50(mg/L)
|
Co-toxicity coefficient |
10% isopyrazam EC |
Y=3.5709X+2.9714 |
3.6989 |
--- |
30% kresoxim-methyl SC |
Y=2.2061X+2.7607 |
10.3526 |
--- |
Embodiment 1(1:8) |
Y=1.8501X+3.7693 |
4.6258 |
186.0 |
Embodiment 2(1:5) |
Y=2.1034X+3.7825 |
3.7915 |
212.1 |
Embodiment 3(1:2) |
Y=3.4063X+3.0784 |
3.6654 |
177.0 |
Embodiment 4(1:1) |
Y=1.771X+3.9832 |
3.7512 |
145.0 |
Embodiment 5(2:1) |
Y=3.4404X+3.1043 |
3.5564 |
131.7 |
Field control effectiveness test:
Indoor biometrics shows good Pesticidal composition, actual field medicine effect test must be carried out, field medicine effect test is the important means that whether final evaluation Pesticidal composition has using value under the impact of field integrated environment, therefore, the field medicine effect test preventing and treating net blotch of barley has been carried out with the pesticide mixed preparation that embodiment obtains in the basis of indoor biometrics.
1. test process: this test medicine consumption establishes three concentration for the treatment of respectively according to the difference of each composition, contrast medicament is 30% kresoxim-methyl SC and 10% isopyrazam EC and blank clean water experiment respectively.
2. each plot area of test method is 66.7m
2, repeat 3 times; Inspection drug effect method before dispenser after Investigation and Prevention is: in test treatment region, adopt accidental sampling, sample 5 points, 0.5 square metre often, check net blotch of barley occurrence degree.
Table 2: the field control effectiveness test of isopyrazam+kresoxim-methyl difference pairing net blotch of barley:
Shown by the result of indoor biometrics and field medicine effect test, isopyrazam and kresoxim-methyl composition have obvious synergistic function, the control efficiency of composition is excellent, and control efficiency is all better than single dose kind, in agricultural application, have good using value.