CN105284922A - Bactericidal composition containing Polygonum cuspidatum extract - Google Patents
Bactericidal composition containing Polygonum cuspidatum extract Download PDFInfo
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Abstract
The invention discloses a bactericidal composition containing a Polygonum cuspidatum extract. The composition contains an active component A and an active component B, wherein the active component A is the Polygonum cuspidatum extract; the active component B is any one chemical compound selected from the group consisting of carbendazim, thiophanate-methyl, prochloraz or salts thereof, and fenamidone; and a weight ratio of the active component A to the active component B is 1: 80 to 60: 1. The composition provided by the invention has synergistic effects on a variety of diseases and pests which are harmful to agricultural production, reduces usage amount of pesticide and residue amount of the pesticide in crops, lightens environmental pollution, is safe to human and livestock, has good environmental compatibility, and is insusceptible to generating pesticide resistance to the diseases and the pests.
Description
Technical field
The invention belongs to technical field of pesticide, relate to a kind of application of bactericidal composition on corps diseases containing Gentrin Knotweed P.E.
Background technology
Mainly comprising archen and Physcion in Gentrin Knotweed P.E, is viscous pasty state, generally easily makes liquid preparation, but usually because containing organic solvent, easily occurring poisoning in liquid preparation, may be used for preventing and treating powdery mildew of cucumber.
Carbendazim, thiophanate-methyl, Prochloraz, Fenamidone all belong to conventional bactericide, and the salt of Prochloraz comprises: prochloraz-manganese chloride complex, prochloraz nantokite, prochloraz zinc salt, be widely used in the disease of crops.
But in the real process of agricultural production, the problem that controlling disease the most easily produces is the generation of disease drug resistance.Different cultivars composition carries out composite, is to prevent and treat the very common method of resistance disease.Heterogeneity is carried out composite, according to practical application effect, judge certain composite be synergy, add and or antagonism.In most cases, the composite effect of sterilization is all additive effect, really has the seldom composite of synergistic effect, especially synergistic effect clearly, very high composite just less of synergy ratio.Study through inventor, find Gentrin Knotweed P.E and carbendazim, thiophanate-methyl, Prochloraz or its salt, Fenamidone is composite after can produce good synergistic effect, and not yet open about the relevant report that Gentrin Knotweed P.E and carbendazim, thiophanate-methyl, Prochloraz or its salt, Fenamidone are composite.
Summary of the invention
The object of the invention is to propose a kind of to there is the bactericidal composition containing Gentrin Knotweed P.E that synergistic function, use cost are low, preventive effect is good.
The bactericidal composition containing Gentrin Knotweed P.E that the present invention proposes contains active components A and active component B, active components A and active component B weight ratio are 1 ︰ 80 ~ 60 ︰ 1, described active components A is selected from Gentrin Knotweed P.E, active component B is selected from the one in carbendazim, thiophanate-methyl, Prochloraz or its salt, Fenamidone, and active components A and the preferred weight ratio of active component B are 1 ︰ 60 ~ 40 ︰ 1; The weight ratio being more preferably Gentrin Knotweed P.E and carbendazim is 1 ︰ 35 ~ 15 ︰ 1, the weight ratio of Gentrin Knotweed P.E and thiophanate-methyl is 1 ︰ 30 ~ 20 ︰ 1, the weight ratio of Gentrin Knotweed P.E and Prochloraz or its salt is 1 ︰ 25 ~ 20 ︰ 1, and the weight ratio of Gentrin Knotweed P.E and Fenamidone is 1 ︰ 25 ~ 25 ︰ 1.
The bactericidal composition containing Gentrin Knotweed P.E that the present invention proposes is for preventing and treating the purposes of disease on crops, and described crops comprise cereal crops, legume crop, fiber crop, sugar [yielding, melon crop, fruits crop, dry fruit crop, hobby crop, root crop, oil crop, flower crop, medicinal crop, crop, green manure pasture crop; Described disease comprises powdery mildew, scab, anthracnose, spot defoliation, ring spot, rice blast, false smut, bakanae disease, brown spot, stalk break, leaf rot, leaf mold, mould maize ear rot, head blight, banded sclerotial blight, fusarium wilt, leaf blight.
The weight ratio of active components A, active component B is 1 ︰ 80 ~ 60 ︰ 1.In usual composition, the weight percentage of active component is 0.5% ~ 90% of gross weight, is preferably 5% ~ 80%.According to different preparation types, active component content scope is different.Usually, liquid preparation contains the active substance of by weight 1% ~ 70%, is preferably 5% ~ 50%; Solid pharmaceutical preparation contains the active substance of by weight 5% ~ 80%, is preferably 10% ~ 80%.
At least containing a kind of surfactant in bactericidal composition of the present invention, the dispersion of active component in water when being beneficial to use.Surface-active contents is 5% ~ 30% of total formulation weight amount, and surplus is solid or liquid diluent.
Bactericidal composition of the present invention can by user before use through diluting or directly using.Its preparation can be prepared by common processing method known in those skilled in the art, after mixing with liquid flux or solid carrier by active substance, then add surfactant as one or more in dispersant, stabilizing agent, wetting agent, binding agent, defoamer, disintegrant, antifreeze etc.
Bactericidal composition of the present invention, acceptable formulation in any sterilization can be processed on demand, wherein more preferably formulation is wetting powder, water dispersible granules, suspending agent, suspension emulsion, aqueous emulsion, microemulsion, microcapsule suspending agent, microcapsule suspension-suspendinagent agent, can also make effervescent tablet, seed coat agent.
Composition comprises following constituent content when making wetting powder: active components A 0.5% ~ 60%, active component B0.5% ~ 80%, dispersant 2% ~ 10%, wetting agent 2% ~ 10%, filler surplus.
Composition comprises following constituent content when making water dispersible granules: active components A 0.5% ~ 60%, active component B0.5% ~ 80%, dispersant 3% ~ 12%, wetting agent 1% ~ 8%, disintegrant 1% ~ 10%, binding agent 0 ~ 8%, filler surplus.
Composition comprises following constituent content when making suspending agent: active components A 0.5% ~ 50%, active component B0.5% ~ 50%, dispersant 2% ~ 10%, wetting agent 2% ~ 10%, defoamer 0.01% ~ 2%, thickener 0 ~ 2%, antifreeze 0 ~ 8%, deionized water add to 100%.
Composition comprises following constituent content when making suspension emulsion: active components A 0.5% ~ 50%, active component B0.5% ~ 50%, dispersant 2% ~ 10%, defoamer 0.01% ~ 2%, solvent 0 ~ 15%, thickener 0 ~ 2%, emulsifier 2% ~ 12%, antifreeze 0 ~ 8%, deionized water add to 100%.
Composition comprises following constituent content when making aqueous emulsion: active components A 0.5% ~ 50%, active component B0.5% ~ 50%, solvent 1% ~ 30%, emulsifier 1% ~ 15%, antifreeze 0 ~ 8%, thickener 0 ~ 2%, defoamer 0.01% ~ 2%, deionized water supply surplus.
Composition comprises following constituent content when making microemulsion: active components A 0.5% ~ 50%, active component B0.5% ~ 50%, solvent 1% ~ 30%, emulsifier 3% ~ 25%, antifreeze 0 ~ 8%, defoamer 0.01% ~ 2%, deionized water supply surplus.
Composition comprises following constituent content when making microcapsule suspending agent: active components A 0.5% ~ 50%, active component B0.5% ~ 50%, macromolecule cyst material 2% ~ 10%, dispersant 1% ~ 10%, organic solvent 1% ~ 10%, emulsifier 1% ~ 7%, defoamer 0.01% ~ 2%, pH adjusting agent 0.01% ~ 5%, deionized water add to 100%.
Composition comprises following constituent content when making microcapsule suspension-suspendinagent agent: active components A 0.5% ~ 50%, active component B0.5% ~ 50%, macromolecule cyst material 2% ~ 10%, dispersant 1% ~ 12%, wetting agent 1% ~ 8%, organic solvent 1% ~ 15%, emulsifier 1% ~ 6%, defoamer 0.01% ~ 2%, thickener 0 ~ 2%, pH adjusting agent 0.01% ~ 5%, deionized water add to 100%;
Wetting powder the key technical indexes of the present invention:
Water dispersible granules the key technical indexes of the present invention:
Suspending agent the key technical indexes of the present invention:
Suspension emulsion the key technical indexes of the present invention:
Aqueous emulsion the key technical indexes of the present invention:
Microemulsion the key technical indexes of the present invention:
Microcapsule suspending agent the key technical indexes of the present invention:
Microcapsule suspension-suspendinagent agent the key technical indexes of the present invention:
The invention has the advantages that:
(1) Gentrin Knotweed P.E and carbendazim, thiophanate-methyl, Prochloraz or its salt, Fenamidone composite after, there is obvious synergy and lasting effect; (2) all greater activity is had to the disease on cereal crops, legume crop, fiber crop, sugar [yielding, melon crop, fruits crop, dry fruit crop, hobby crop, root crop, oil crop, flower crop, medicinal crop, crop, green manure pasture crop; (3) decrease pesticide usage amount, reduce the residual quantity of agricultural chemicals on crop, alleviate environmental pollution; (4) to person poultry safety, Environmental compatibility is good; And preparation adhesion strength strengthens, resistance of rainwater washing against.
Embodiment
Below in conjunction with embodiment to further instruction of the present invention, the percentage in embodiment is all weight percentage, but the present invention is not limited thereto.
Application Example one
Embodiment 1 ~ 10 wetting powder
Gentrin Knotweed P.E, active component B, dispersant, wetting agent, filler are mixed in mixed cylinder, mixes again after airslide disintegrating mill is pulverized, wetting powder product of the present invention can be obtained, specifically in table 1.
The each component of table 1 embodiment 1 ~ 10 and weight portion
Embodiment 11 ~ 20 water dispersible granules
Gentrin Knotweed P.E, active component B, dispersant, wetting agent, disintegrant, filler etc. are obtained together the particle diameter needed through air-flow crushing, then add other auxiliary agents such as binding agent (can add and can not add), obtain granulation materials.Item is quantitatively sent in fluidized bed granulating dryer through granulating and after drying, water dispersible granules product of the present invention can being obtained, specifically in table 2.
The each component of table 2 embodiment 11 ~ 20 and weight portion
Carbendazim, thiophanate-methyl, Prochloraz or its salt, Fenamidone in table 1,2 are exchanged, can novel formulation be obtained.
Embodiment 21 ~ 30 suspending agent
By dispersant, wetting agent, defoamer, thickener (can add and can not add), antifreeze (can add and can not add), mix through high speed shear, add Gentrin Knotweed P.E, active component B, ball milling 2 ~ 3 hours in ball mill, make diameter of particle all below 5 μm, surplus deionized water is supplied, and can obtain suspending agent product of the present invention, specifically in table 3.
The each component of table 3 embodiment 21 ~ 30 and weight portion
Embodiment 31 ~ 38 suspension emulsion
Dispersant, defoamer, thickener (can add and can not add), antifreeze (can add and can not add) are mixed through high speed shear, add active component B, ball milling 2 ~ 3 hours in ball mill, make diameter of particle all below 5 μm, obtained carbendazim or thiophanate-methyl suspending agent, then by Gentrin Knotweed P.E, solvent (can add and can not add), emulsifier and the direct emulsification of various auxiliary agent high speed agitators in suspending agent, surplus deionized water is supplied, obtained suspension emulsion product of the present invention, specifically in table 4,5.
The each component of table 4 embodiment 31 ~ 34 and weight portion
The each component of table 5 embodiment 35 ~ 38 and weight portion
Embodiment 39 ~ 48 aqueous emulsion
Gentrin Knotweed P.E, active component B, solvent, emulsifier are added together, make to be dissolved into homogeneous oil phase; Deionized water, antifreeze (can add and can not add), thickener (can add and can not add), defoamer are mixed, becomes homogeneous aqueous phase.Under high velocity agitation, aqueous phase is added oil phase, surplus deionized water is supplied; Aqueous emulsion product of the present invention can be obtained, specifically in table 6.
The each component of table 6 embodiment 39 ~ 48 and weight portion
Carbendazim, thiophanate-methyl, Prochloraz, Fenamidone in table 3 ~ 6 are exchanged, can novel formulation be obtained.
Embodiment 49 ~ 51 microemulsion
Gentrin Knotweed P.E, active component B, solvent, emulsifier, antifreeze (can add and can not add), defoamer are fully mixed into the oil phase of homogeneous transparent, under agitation slowly add deionized water, form WO emulsion, again through agitating heating, make it rapid phase inversion and become oil-in-water type, be chilled to room temperature to make it to reach balance, after filtration, surplus deionized water is supplied; Microemulsion product of the present invention can be obtained, specifically in table 7.
The each component of table 7 embodiment 49 ~ 51 and weight portion
Embodiment 52,53 microcapsule suspending agent
By Gentrin Knotweed P.E, active component B, macromolecule cyst material, solvent, make to be dissolved into homogeneous oil phase, in a shear condition, oil phase is joined in the aqueous phase solution containing emulsifier, pH adjusting agent, dispersant, surplus deionized water is supplied, bi-material reacts at oil-water interfaces, forms macromolecule cyst wall, makes the finely disseminated microcapsule suspending agent product of the present composition.Specifically in table 8.
Table 8 embodiment 52,53 each component and weight portion
Embodiment 54,55 microcapsule suspension-suspendinagent agent
By Gentrin Knotweed P.E, macromolecule cyst material, solvent, make to be dissolved into homogeneous oil phase, oil phase is joined in a shear condition in the aqueous phase solution containing emulsifier, pH adjusting agent, make finely disseminated microcapsule suspending agent.Dispersant, wetting agent, defoamer, thickener (can add and can not add) are mixed through high speed shear, add active component B, ball milling 2 ~ 3 hours in ball mill, make diameter of particle all below 5 μm, obtained suspending agent, then join in the aqueous phase solution of micro-capsule suspension by suspending agent, deionized water supplies surplus, make the finely disseminated microcapsule suspension-suspendinagent agent product of the present composition, specifically in table 9.
Table 9 embodiment 54,55 each component and weight portion
The embodiment of the present invention is the method adopting Toxicity Determination and field trial to combine.First pass through Toxicity Determination, synergy ratio (SR) after clear and definite two kinds of medicaments are composite by a certain percentage, SR < 0.5 is antagonism, 0.5≤SR≤1.5 are summation action, SR > 1.5 is synergistic effect, on this basis, then carry out field trial.
Test method: determine that after the effective inhibition concentration scope of each medicament, medicament establishes 5 dosage process respectively by active constituent content through prerun, if clear water contrast.Carry out with reference to " farm-chemical indoor determination test rule bactericide ", adopt mycelial growth rate method to measure medicament to the virulence of crop germ.Measure colony diameter by right-angled intersection method after 72h, calculate each process net growth, mycelial growth inhibition rate.
Net growth (mm)=measurement colony diameter-5
Mycelial growth inhibition rate is converted into probit value (y), liquor strength (μ g/mL) converts logarithm value (x) to, try to achieve virulence regression equation (y=a+bx) with method of least squares, and calculate the EC of often kind of medicament thus
50value.Calculate two medicament different ratio synergies ratio (SR) according to Wadley method, SR < 0.5 is antagonism, and 0.5≤SR≤1.5 are summation action simultaneously, and SR > 1.5 is synergistic effect.Computing formula is as follows:
Wherein: a, b are respectively active components A and the ratio of active component B shared by combination;
A is Gentrin Knotweed P.E;
B choosing is to the one in carbendazim, thiophanate-methyl, Prochloraz or its salt, Fenamidone.
Application Example two:
For examination disease: wheat scab
Test medicine provides by Shaanxi Meibang Pesticide Co., Ltd..
Experimental scheme: through effective inhibition concentration scope of preliminary experiment determination Gentrin Knotweed P.E and carbendazim active compound and the two different ratio mixture.
Toxicity test result
Table 10 Gentrin Knotweed P.E and the composite toxicity test analysis of results table to wheat scab of carbendazim
As shown in Table 10, Gentrin Knotweed P.E and carbendazim proportioning are all greater than 1.5 when 1 ︰ 80 ~ 60 ︰ 1 to the synergy ratio SR of wheat scab, both explanations mixture in 1 ︰ 80 ~ 60 ︰ 1 scope all shows synergistic effect, when the proportioning of Gentrin Knotweed P.E and carbendazim is at 1 ︰ 35 ~ 15 ︰ 1, synergistic effect is more outstanding, and synergy ratio is all more than 2.30.Testing through applicant the optimum ratio finding Gentrin Knotweed P.E and carbendazim is 15:1,10:1,5:1,1:1,1:5,1:6,1:7,1:8,1:9,1:10,1:11,1:12,1:13,1:14,1:15,1:16,1:17,1:18,1:19,1:20,1:25,1:30,1:35, especially when Gentrin Knotweed P.E and carbendazim weight ratio are 1:11, synergy ratio is maximum, and synergistic effect is the most obvious.
Application Example three
For examination disease: powdery mildew of cucumber
Test medicine provides by Shaanxi Meibang Pesticide Co., Ltd..
Experimental scheme: through effective inhibition concentration scope of preliminary experiment determination Gentrin Knotweed P.E and thiophanate methyl raw pesticide and the two different ratio mixture.
Table 11 Gentrin Knotweed P.E and the composite toxicity test analysis of results table to powdery mildew of cucumber of thiophanate-methyl
As shown in Table 11, Gentrin Knotweed P.E and thiophanate-methyl proportioning are all greater than 1.5 when 1 ︰ 80 ~ 60 ︰ 1 to the synergy ratio SR of powdery mildew of cucumber, both explanations mixture in 1 ︰ 80 ~ 60 ︰ 1 scope all shows synergistic effect, when the proportioning of Gentrin Knotweed P.E and thiophanate-methyl is at 1 ︰ 30 ~ 20 ︰ 1, synergistic effect is more outstanding, and synergy ratio is all more than 2.25.Testing through applicant the optimum ratio finding Gentrin Knotweed P.E and thiophanate-methyl is 20:1,15:1,10:1,5:1,1:1,1:2,1:3,1:4,1:5,1:6,1:7,1:8,1:9,1:10,1:11,1:12,1:15,1:20,1:25,1:30, especially when Gentrin Knotweed P.E and thiophanate-methyl weight ratio are 1:6, synergy ratio is maximum, and synergistic effect is the most obvious.
Application Example four
For examination disease: citrus anthracnose
Test medicine provides by Shaanxi Meibang Pesticide Co., Ltd..
Experimental scheme: through effective inhibition concentration scope of preliminary experiment determination Gentrin Knotweed P.E and Prochloraz or the former medicine of its salt and the two different ratio mixture.
Table 12 Gentrin Knotweed P.E and Prochloraz or the composite toxicity test analysis of results table to citrus anthracnose of its salt
As shown in Table 12, Gentrin Knotweed P.E and Prochloraz or its salt proportioning are all greater than 1.5 when 1 ︰ 80 ~ 60 ︰ 1 to the synergy ratio SR of citrus anthracnose, both explanations mixture in 1 ︰ 80 ~ 60 ︰ 1 scope all shows synergistic effect, when the proportioning of Gentrin Knotweed P.E and Prochloraz or its salt is at 1 ︰ 25 ~ 20 ︰ 1, synergistic effect is more outstanding, and synergy ratio is all more than 2.25.Testing through applicant the optimum ratio finding Gentrin Knotweed P.E and Prochloraz or its salt is 20:1,15:1,10:1,5:1,2:1,1:1,1:2,1:3,1:4,1:5,1:6,1:7,1:8,1:9,1:10,1:11,1:15,1:20,1:25, especially when Gentrin Knotweed P.E and Prochloraz or its salt weight ratio are 1:4, synergy ratio is maximum, and synergistic effect is the most obvious.
Application Example five
For examination disease: downy mildew of garpe
Test medicine provides by Shaanxi Meibang Pesticide Co., Ltd..
Experimental scheme: through effective inhibition concentration scope of preliminary experiment determination Gentrin Knotweed P.E and the former medicine of Fenamidone and the two different ratio mixture.
Table 13 Gentrin Knotweed P.E and the composite toxicity test analysis of results table to downy mildew of garpe of Fenamidone
As shown in Table 13, Gentrin Knotweed P.E and Fenamidone proportioning are all greater than 1.5 when 1 ︰ 80 ~ 60 ︰ 1 to the synergy ratio SR of downy mildew of garpe, both explanations mixture in 1 ︰ 80 ~ 60 ︰ 1 scope all shows synergistic effect, when the proportioning of Gentrin Knotweed P.E and Fenamidone is at 1 ︰ 25 ~ 25 ︰ 1, synergistic effect is more outstanding, and synergy ratio is all more than 2.30.Testing through applicant the optimum ratio finding Gentrin Knotweed P.E and Fenamidone is 25:1,20:1,15:1,10:1,8:1,6:1,5:1,4:1,3:1,2:1,1:1,1:2,1:3,1:4,1:5,1:6,1:7,1:8,1:10,1:15,1:20,1:25, especially when Gentrin Knotweed P.E and Fenamidone weight ratio are 1:2, synergy ratio is maximum, and synergistic effect is the most obvious.
Through test find: Gentrin Knotweed P.E and active component B composite after have obvious synergistic effect to the control of the powdery mildew in various crop, scab, anthracnose, spot defoliation, ring spot, rice blast, false smut, bakanae disease, brown spot, stalk break, leaf rot, leaf mold, mould maize ear rot, head blight, banded sclerotial blight, fusarium wilt, leaf blight, synergy ratio SR is all greater than 1.5.
Effect experiment part: test medicine is researched and developed by Shaanxi Meibang Pesticide Co., Ltd., provided, contrast medicament 10% Gentrin Knotweed P.E wetting powder (autogamy), 25% carbendazol wettable powder (commercial), 70% thiophanate-methyl wetting powder (commercial), 25% Prochloraz missible oil (commercial), 50% Fenamidone suspending agent (autogamy).
Application Example six Gentrin Knotweed P.E and active component B and compositely prevent and treat the powdery mildew of cucumber test of pesticide effectiveness
This test arrangement is at Xian District, Shanxi Province suburban area, and investigation powdery mildew of cucumber disease index before medicine, in the dispenser of disease initial stage of origination, 5 days, 10 days, 20 days investigation disease indexes after dispenser also calculate preventive effect.Result of the test is as follows:
Table 14 Gentrin Knotweed P.E and active component B and compositely prevent and treat the powdery mildew of cucumber test of pesticide effectiveness
As can be seen from Table 14, Gentrin Knotweed P.E and active component B composite after effectively can prevent and treat powdery mildew of cucumber, through applicant test find Gentrin Knotweed P.E and active component B composite after also can effectively prevent and treat scab, fusarium wilt, anthracnose, stalk break, control efficiency is all higher than 96%, be better than the preventive effect of single dose, and the preventive effect phase is long, in test scope of medication, target crop is had no adverse effects.
Application Example seven Gentrin Knotweed P.E and active component B and the composite control rice blast test of pesticide effectiveness thereof
This test arrangement is in Hanzhong City suburb, Shaanxi Province, and investigation rice blast disease index before medicine, in the dispenser of disease initial stage of origination, 7 days, 15 days, 30 days investigation disease indexes after dispenser also calculate preventive effect.Result of the test is as follows:
Table 15 Gentrin Knotweed P.E and active component B and the composite control rice blast test of pesticide effectiveness thereof
As can be seen from Table 15, Gentrin Knotweed P.E and active component B composite after effectively can prevent and treat rice blast, through applicant test find Gentrin Knotweed P.E and active component B composite after also can effectively prevent and treat false smut, banded sclerotial blight, bakanae disease, stalk break, control efficiency is all higher than 95%, be better than the preventive effect of single dose, and the preventive effect phase is long, in test scope of medication, target crop is had no adverse effects.
Application Example eight Gentrin Knotweed P.E and active component B and compositely prevent and treat the wheat scab test of pesticide effectiveness
This test arrangement is at Xian District, Shanxi Province suburban area, and investigation wheat scab disease index before medicine, in the dispenser of disease initial stage of origination, 5 days, 15 days, 30 days investigation disease indexes after dispenser also calculate preventive effect.Result of the test is as follows:
Table 16 Gentrin Knotweed P.E and active component B and compositely prevent and treat the wheat scab test of pesticide effectiveness
As can be seen from Table 16, Gentrin Knotweed P.E and active component B and compositely prevent and treat wheat scab, through applicant test find Gentrin Knotweed P.E and active component B composite after also can effectively prevent and treat powdery mildew, banded sclerotial blight, brown spot, leaf blight, control efficiency is all higher than 95%, be better than the preventive effect of single dose, and the preventive effect phase is long, in test scope of medication, target crop is had no adverse effects.
Application Example nine Gentrin Knotweed P.E and active component B and the composite control pear scab test of pesticide effectiveness thereof
This test arrangement is at Xianyang, Shanxi province suburban area, and investigation pear scab disease index before medicine, in the dispenser of disease initial stage of origination, 7 days, 15 days, 30 days investigation disease indexes after dispenser also calculate preventive effect.Result of the test is as follows:
Table 17 Gentrin Knotweed P.E and active component B and the composite control pear scab test of pesticide effectiveness thereof
As can be seen from Table 17, Gentrin Knotweed P.E and active component B composite after effectively can prevent and treat pear scab, through applicant test find Gentrin Knotweed P.E and active component B composite after also can effectively prevent and treat ring spot, spot defoliation, brown spot, control efficiency is all higher than 96%, be better than the preventive effect of single dose, and the preventive effect phase is long, in test scope of medication, target crop is had no adverse effects.
Application Example ten Gentrin Knotweed P.E and active component B and compositely prevent and treat the downy mildew of garpe test of pesticide effectiveness
This test arrangement is in Weinan City Dali County, Shaanxi Province, and investigation downy mildew of garpe disease index before medicine, in the dispenser of disease initial stage of origination, 10 days, 20 days, 45 days investigation disease indexes after dispenser also calculate preventive effect.Result of the test is as follows:
Table 18 Gentrin Knotweed P.E and active component B and compositely prevent and treat the downy mildew of garpe test of pesticide effectiveness
As can be seen from Table 18, Gentrin Knotweed P.E and active component B composite after effectively can prevent and treat downy mildew of garpe, through applicant test find Gentrin Knotweed P.E and active component B composite after also can effectively prevent and treat powdery mildew, anthracnose, brown spot, control efficiency is all higher than 96%, be better than the preventive effect of single dose, and the preventive effect phase is long, in test scope of medication, target crop is had no adverse effects.
After test through all parts of the country draw, Gentrin Knotweed P.E and carbendazim, thiophanate-methyl, Prochloraz or its salt, the composite rear preventive effect to Common Diseases such as the powdery mildew in various crop, scab, anthracnose, spot defoliation, ring spot, rice blast, false smut, bakanae disease, brown spot, stalk break, leaf rot, leaf mold, mould maize ear rot, head blight, banded sclerotial blight, fusarium wilt, leaf blights of Fenamidone are all more than 95%, be better than single dose preventive effect, synergistic effect is obvious.
Claims (6)
1. the bactericidal composition containing Gentrin Knotweed P.E, effective active composition is active components A and active component B, it is characterized in that: active components A and active component B weight ratio are 1 ︰ 80 ~ 60 ︰ 1, described active components A is selected from Gentrin Knotweed P.E, and active component B is selected from the one in carbendazim, thiophanate-methyl, Fenamidone, Prochloraz or its salt.
2. the bactericidal composition containing Gentrin Knotweed P.E according to claim 1, is characterized in that: the weight ratio of active components A and active component B is 1 ︰ 60 ~ 40 ︰ 1.
3. the bactericidal composition containing Gentrin Knotweed P.E according to claim 2, is characterized in that:
The weight ratio of Gentrin Knotweed P.E and carbendazim is 1 ︰ 35 ~ 15 ︰ 1;
The weight ratio of Gentrin Knotweed P.E and thiophanate-methyl is 1 ︰ 30 ~ 20 ︰ 1;
The weight ratio of Gentrin Knotweed P.E and Prochloraz or its salt is 1 ︰ 25 ~ 20 ︰ 1;
The weight ratio of Gentrin Knotweed P.E and Fenamidone is 1 ︰ 25 ~ 25 ︰ 1.
4. the bactericidal composition containing Gentrin Knotweed P.E according to any one of claim 1 to 3, is characterized in that: composition makes wetting powder, water dispersible granules, suspending agent, suspension emulsion, aqueous emulsion, microemulsion, microcapsule suspending agent or microcapsule suspension-suspendinagent agent.
5. the bactericidal composition containing Gentrin Knotweed P.E according to claim 4 is for preventing and treating the purposes of disease on crops.
6. purposes according to claim 5, it is characterized in that, described disease is: powdery mildew, scab, anthracnose, spot defoliation, ring spot, rice blast, false smut, bakanae disease, brown spot, stalk break, leaf rot, leaf mold, mould maize ear rot, head blight, banded sclerotial blight, fusarium wilt or leaf blight.
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Address after: 715500 Pucheng high tech Industrial Development Zone, Weinan, Shaanxi Applicant after: Shaanxi Mei Bang Pharmaceutical Group Limited by Share Ltd Address before: 715500 Industrial Park of Agrochemical Base, Pucheng County, Shaanxi Province, Weinan City, Shaanxi Province Applicant before: Shaanxi Meibang Pesticide Co., Ltd. |
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Application publication date: 20160203 |