CN103814934B - A kind of nematicidal composition - Google Patents
A kind of nematicidal composition Download PDFInfo
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- CN103814934B CN103814934B CN201410064051.0A CN201410064051A CN103814934B CN 103814934 B CN103814934 B CN 103814934B CN 201410064051 A CN201410064051 A CN 201410064051A CN 103814934 B CN103814934 B CN 103814934B
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- dithiocyano
- methane
- pyrrole bacterium
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- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
A kind of nematicidal composition, the present invention relates to a kind of nematicidal composition, its active ingredient is dithiocyano-methane (A) and fluorine pyrrole bacterium acid amides (B), and (A) is 100: 1-1: 100 with the mass ratio of (B).(A) there is obvious synergistic effect, for the nematoda control in the plants such as fruit tree, vegetables, cereal crops, oil crop, sugar [yielding, cotton bast fiber crop, gardening gardens class plant and place after composite with (B).
Description
Technical field
The present invention relates to a kind of composition pesticide, especially a kind of nematicidal composition containing dithiocyano-methane.
Background technology
Plant nematode mainly comprises: Meloidogyne (Meloidogyne), kidney shape Turbatrix (Ro tylenchulus), cyst roundworm (Heterodera (Heterodera)), root spot nematode (Pratylenchidae belongs to (Pratykenchus)).Directly searching for food of nematode significantly can reduce the absorption of Plant To Nutrient and moisture, and nematode Plant species eaten causes wound, returns phytopathogen invasion and provides convenience.
Current nematode chemical control possibility is few, agriculturally prevents and treats nematode and substantially concentrates on prevention nematode to the invasion and attack of plant.Dithiocyano-methane has killing action to many bacteriums, fungi, algae, also can be used as nematocide, but dithiocyano-methane is used alone, and effect is not ideal enough, and the drug effect phase is short.
Summary of the invention
The object of the invention is to: provide a kind of and be applicable to that agriculturally use, that nematode is had to outstanding control efficiency safety, synergy nematicidal composition containing dithiocyano-methane.
Inventor is after a large amount of Seiving Tests, the composition of unexpected discovery dithiocyano-methane and fluorine pyrrole bacterium acid amides has synergistic effect when preventing and treating nematodosis, with only use independent active component can compared with obtainable control efficiency, used in combination, better control efficiency is provided to parasitic nematode and can the lasting period be extended.
The present composition has synergistic function, and is therefore specially adapted to the parasitic nematode preventing and treating harm plant root, the parasitic nematode especially in fruit tree, vegetables, oil crop, sugar [yielding, cotton bast fiber crop, gardening gardens class plant.
A kind of nematicidal composition provided by the invention, is characterized in that comprising dithiocyano-methane (A) and fluorine pyrrole bacterium acid amides (B); Even a small amount of (A) or (B) is also enough for realizing Synergistic, and usually, (A) and (B) mass ratio is 100: 1-1: 100, preferably 50: 1-1: 50, more preferably 10: 1-1: 10.
Described fluorine pyrrole bacterium acid amides, English name: fluopyram is succinate dehydrogenase inhibitors, can suppress spore germination, germ tube elongation and mycelial growth, efficient to multiple diseases such as powdery mildew, gray mold, Leaf Spot Caused by Corynespora cassiicola on Cucumbers.
The present composition also can prevent and treat various crop as the pest on the plant such as cotton, vegetables (as cucumber, beans, tomato, potato and cucurbitaceous plant), banana, coffee, corn, fruits, rice, wheat, barley, oat, rye, soybean, peanut, ornamental plants, sugarcane and in seed.
The present composition is particularly suitable for preventing and treating plant nematode, such as Pratylenchidae (Pratykenchusspp), Radopholus similis Throne (Radopho1ous similis), fuller's teasel stem eelworm (Ditylenchusdipsaci), Tylenchulus Semipenetrans (Tylenchulussemipene trans), Heterodera kind (Heterodera spp.), ball Heterodera kind (Globodera spp.), Meloidogyne kind (Meloidogyne spp.), kidney shape Turbatrix kind (Rotylenchulus spp.), Aphelenchoides kind (Aphelenchoides spp.), minute hand Turbatrix kind (Longidorus spp.), Xiphinema kind (Xiphinema spp.), burr Turbatrix kind (Trichodorus spp.), Bursaphelenchus kind (Bursaphelenchus spp.).
Preferably the present composition is used for the nematodosis of preventing and treating oil crop, the flowers etc. such as Cereal, paddy rice, wheat, fruit tree, cotton, vegetables, soybean and peanut, as wheat root-knot nematode and cyst roundworm, oranges and tangerines root-knot nematode, cucumber root-knot nematode, tomato root-knot eelworm, capsicum root-knot nematode, soy bean cyst roundworm, peanut root-knot nematode etc.
The present composition can be prepared into the formulation of applicable agricultural use by known method, in preparation, the total content of active ingredient is 0.5%-98%, preferred 5-80%, and all the other are pesticide adjuvant composition.
Agricultural chemicals cooperative compositions of the present invention can be formulated as and for spraying after dilution or carrying out suspending agent, aqueous emulsion, microemulsion, missible oil, wetting powder, the water dispersible granules of soil or seed treatment, also can be made into granule and directly use.Preferred dosage form is suspending agent, missible oil, granule.
Preparation is prepared in a known way, and such as, by active component is mixed with solvent and/or carrier and prepared, words if desired use other pesticide adjuvant composition such as emulsifier and dispersant.
Insecticide-applying way can be taked spraying, fills with root, leaching root, soak seed, get rid of and execute, spread fertilizer over the fields, ditch spread, to spread manuer in holes, and preferred ditch spread during control nematode, spreads manuer in holes, fills with the soil treatment such as root or leaching root, seed soaking, seed pelleting process.
Compared with prior art, the beneficial effect that nematicidal composition of the present invention produces is: (1), compared with single dose, synergy is obvious, improves control efficiency, expands desinsection, fungicidal spectrum; (2) can significantly reduce field dosage, reduce the possibility causing poisoning, toxicity, reduce and produce and use cost, and can effectively reduce environmental pollution and residue of pesticide; (3) in nematicidal composition, the mechanism of action of active ingredient is different, reduces the single selection pressure to nematode, is conducive to overcoming nematode resistance and produces and delay the drug-fast generation speed of nematode; (4) nematicidal composition has good control efficiency to all kinds of nematodosis; (5) nematicidal composition can extend the lasting period; (6) nematicidal composition simultaneously doublely can control some damage by disease and insect.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, the following specific embodiment of the present invention is described, but the present invention is only limited to absolutely not these examples.
The synergistic function of the present composition illustrates by following test:
Biologicall test example: dithiocyano-methane and the composite toxicity test to cucumber root-knot nematode of fluorine pyrrole bacterium acid amides
Subjects: cucumber root-knot nematode (Meloidogyne incognita)
Evaluation method is pot-culture method.From cucumber root, the pieces of an egg sterile water wash of picking root-knot nematode, is placed on the wet filter paper of culture dish, adds 20ml sterile water, hatches at 20 DEG C-25 DEG C, obtains consistent second instar larvae in the length of time, is diluted to 400/ml with sterile water.In cucumber two leaf phase inoculation second instar larvae, adopt root injection method, get 5ml nematode inoculation liquid and inject in rhizosphere soil, 24h soil conservation 70%-80% humidity after inoculation.For subsequent use after cucumber inoculation root-knot nematode.
Be made into mother liquor after active component dissolves on request, be then diluted to applicable concentration by purified water and carry out root irrigation.After chemicals treatment, cucumber seedling is placed in phytotron, then 25-30 DEG C, 12h alternation of light and darkness, cultivate 30d under relative moisture 35%-50% condition.Each repetition random searching 4 basin, each process amounts to investigation 16 basin cucumber.Grade scale presses National Standard of the People's Republic of China " pesticide field efficacy medicine test criterion () ", severity Scaling standard.
Diseased plant stage division is as follows:
0 grade: root system is without insect gall;
1 grade: root system has a small amount of little insect gall;
3 grades: 2/3rds root systems are covered with little insect gall;
5 grades: root system is covered with little insect gall and has secondary insect gall;
7 grades: root growth fibrous root group;
Computational methods:
The expection effect (i.e. theoretical control efficiency, %) of mixture of active principles uses Colby formula to determine and compares with the effect observed:
Colby formula: E=X+Y-X*Y/100
E: when active components A working concentration in composition is a, group when active component B working concentration is b
Compound expection effect,
X: effect when active components A using dosage is a,
Effect when Y: active component B using dosage is b.
Illustrate there is synergistic effect when the control efficiency observed exceedes expection preventive effect.
Dithiocyano-methane and fluorine pyrrole bacterium acid amides composite to cucumber root tie lines worm indoor virulence measurement result see table 1,2.
The independent active component of table 1. is to the Toxicity Determination result of cucumber root-knot nematode
Table 2. dithiocyano-methane and the composite Toxicity Determination result to cucumber root-knot nematode of fluorine pyrrole bacterium acid amides
Result of the test shows, dithiocyano-methane and fluorine pyrrole bacterium acid amides is composite prevents and treats cucumber root-knot nematode, when proportioning is between 100: 1-1: 100, all has synergistic effect.
Bactericidal composition of the present invention can be prepared into the suspending agent of applicable agricultural use, aqueous emulsion, microemulsion, missible oil, wetting powder, water dispersible granules or granule by known method.Be described with specific embodiment below, in formula, percentage is mass percent.In present specification, active component refers to dithiocyano-methane and fluorine pyrrole bacterium acid amides, and active component is all by 100% purity meter, and in the application of reality, convert according to former medicine actual purity used, difference filler or thinner adjust, and below repeat no more.
One, suspending agent processing and application example
The ratio of each components such as active component, wetting dispersing agent, thickener, carrier and water in formula is mixed, after grinding and/or high speed shear, obtains suspending agent.
Embodiment 1:20.2% dithiocyano-methane fluorine pyrrole bacterium amide suspending agents
Dithiocyano-methane 20%, fluorine pyrrole bacterium acid amides 0.2%, methyl naphthalene sulfonate formaldehyde condensate 10%, sodium lignin sulfonate 10%, xanthans 1%, silicone oil 1%, glycerine 5%, water complements to 100%.
This embodiment is applied to control pepper root Root-knot.20.2% dithiocyano-methane fluorine pyrrole bacterium amide suspending agents is drenched ground by 100g ai/ha (g ai/ha refers to per hectare effective ingredient consumption, identical below) consumption thin up, and after medicine, the control efficiency of 30 days and 60 days is respectively 81.4%, 75.3%.10% dithiocyano-methane suspending agent presses 120g ai/ha and 10% fluorine pyrrole bacterium amide suspending agents by 120g ai/ha, in kind uses.After 10% dithiocyano-methane suspending agent medicine, the preventive effect of 30 days and 60 days is respectively 71.2%, 40.2%; After 10% fluorine pyrrole bacterium amide suspending agents medicine, the preventive effect of 30 days and 60 days is respectively 68.3%, 63.4%.Dithiocyano-methane and the composite rear synergistic effect of fluorine pyrrole bacterium acid amides are obvious, to the preventive effect of capsicum root-knot nematode significantly better than single dose.
Embodiment 2:30.3% dithiocyano-methane fluorine pyrrole bacterium amide suspending agents
Dithiocyano-methane 0.3%, fluorine pyrrole bacterium acid amides 30%, thermally coupled distillation columns 8%, carboxymethyl cellulose 1%, white carbon 1%, glycerine 4%, water complements to 100%.
This embodiment is applied to control tomato root-knot eelworm.30.3% dithiocyano-methane fluorine pyrrole bacterium amide suspending agents is carried out root irrigation by 120g ai/ha thin up, and after medicine, the control efficiency of 30 days and 60 days is respectively 88.1%, 84.4%.10% dithiocyano-methane suspending agent presses 150g ai/ha and 10% fluorine pyrrole bacterium amide suspending agents by 150g ai/ha, in kind uses, and after 10% dithiocyano-methane suspending agent medicine, the preventive effect of 30 days and 60 days is respectively 76.3%, 49.4%; After 10% fluorine pyrrole bacterium amide suspending agents medicine, the preventive effect of 30 days and 60 days is respectively 73.4%, 70.3%.Dithiocyano-methane and the composite rear synergistic effect of fluorine pyrrole bacterium acid amides are obvious, to the preventive effect of tomato root-knot eelworm significantly better than single dose.
Two, aqueous emulsion processing and application example
Active component, solvent, emulsifier are added together, make to be dissolved into homogeneous oil phase; Under high velocity agitation, oil phase is added to the water and mixes, obtained aqueous emulsion.
Embodiment 3:20% dithiocyano-methane fluorine pyrrole bacterium acid amides aqueous emulsion
Dithiocyano-methane 10%, fluorine pyrrole bacterium acid amides 10%, 1-METHYLPYRROLIDONE 10%, calcium dodecyl benzene sulfonate 5%, agriculture breast 600#5%, water complements to 100%.
This embodiment is applied to control cucumber root-knot nematode.20% dithiocyano-methane fluorine pyrrole bacterium acid amides aqueous emulsion is pressed 120g ai/ha thin up and drench ground, after medicine, the control efficiency of 30 days and 60 days is respectively 94.1%, 89.7%.10% dithiocyano-methane missible oil presses 150g a i/ha and 10% fluorine pyrrole bacterium amide suspending agents by 150gai/ha, in kind uses.After 10% dithiocyano-methane missible oil medicine, the preventive effect of 30 days and 60 days is respectively 76.2%, 46.3%; After 10% fluorine pyrrole bacterium amide suspending agents medicine, the preventive effect of 30 days and 60 days is respectively 75.8%, 71.3%.Dithiocyano-methane and the composite rear synergistic effect of fluorine pyrrole bacterium acid amides are obvious, to the preventive effect of cucumber root-knot nematode significantly better than single dose.
Three, microemulsion processing and application example
Active component, solvent, cosolvent, emulsifier are added together, make to be dissolved into homogeneous oil phase; Water-soluble substances is added to the water, homogeneous aqueous phase in dissolving, under agitation, oil phase is evenly mixed with water, obtained microemulsion.
Embodiment 4:20.4% dithiocyano-methane fluorine pyrrole bacterium acid amides microemulsion
Dithiocyano-methane 0.4%, fluorine pyrrole bacterium acid amides 20%, 1-METHYLPYRROLIDONE 10%, isopropyl alcohol 10%, agriculture breast 500#5%, agriculture breast 1601#5%, water complements to 100%.
This embodiment is applied to control sponge gourd root-knot nematode.By 20.4% dithiocyano-methane fluorine pyrrole bacterium acid amides microemulsion by the seed soaking of active ingredient 8g/100 kilogram of seed thin up, after medicine, the control efficiency of 30 days and 60 days is respectively 84.1%, 80.7%.10% dithiocyano-methane missible oil presses active ingredient 10g/100 kilogram of seed by active ingredient 10g/100 kilogram of seed and 10% fluorine pyrrole bacterium amide suspending agents, in kind use, 30 days and investigation in 60 days after medicine, it is 68.3%, 42.6% that 10% dithiocyano-methane missible oil preventive effect is respectively; 10% fluorine pyrrole bacterium amide suspending agents preventive effect is respectively 72.3%, 66.5.Dithiocyano-methane and the composite rear synergistic effect of fluorine pyrrole bacterium acid amides are obvious, to the preventive effect of sponge gourd root-knot nematode significantly better than single dose.
Embodiment 5:25.5% dithiocyano-methane fluorine pyrrole bacterium acid amides microemulsion
Dithiocyano-methane 25%, fluorine pyrrole bacterium acid amides 0.5%, 1-METHYLPYRROLIDONE 10%, isopropyl alcohol 10%, agriculture breast 500#5%, agriculture breast 1601#5%, water complements to 100%.
This embodiment is applied to control great Jiang root-knot nematode.25.5% dithiocyano-methane fluorine pyrrole bacterium acid amides microemulsion is pressed 150g ai/ha consumption thin up and fill with root, after medicine, the control efficiency of 30 days and 60 days is respectively 87.7%, 82.3%.10% dithiocyano-methane missible oil presses 200g ai/ha and 10% fluorine pyrrole bacterium amide suspending agents by 200g ai/ha, in kind uses, and after 10% dithiocyano-methane missible oil medicine, the preventive effect of 30 days and 60 days is respectively 72.4%, 40.5%; After 10% fluorine pyrrole bacterium amide suspending agents medicine, the preventive effect of 30 days and 60 days is respectively 70.1%, 68.4%.Dithiocyano-methane and the composite rear synergistic effect of fluorine pyrrole bacterium acid amides are obvious, to the preventive effect of great Jiang root-knot nematode significantly better than single dose.
Four, missible oil processing and application example
Active component, solvent, emulsifier are added in mixing kettle successively in the ratio of formula, stirs, obtained missible oil.
Embodiment 6:11% dithiocyano-methane fluorine pyrrole bacterium acid amides missible oil
Dithiocyano-methane 10%, fluorine pyrrole bacterium acid amides 1%, 1-METHYLPYRROLIDONE 10%, agriculture breast 1601#5%, agriculture breast 500#5%, calcium dodecyl benzene sulfonate 3%, dimethylbenzene complements to 100%.
This embodiment is applied to balsam pear root-knot nematode.Transplanted by after 1000 times of thin ups leaching root 12h by 11% dithiocyano-methane fluorine pyrrole bacterium acid amides missible oil, after medicine, the control efficiency of 30 days and 60 days is respectively 78.2%, 75.7%.10% dithiocyano-methane missible oil presses 800 times by 800 times and 10% fluorine pyrrole bacterium amide suspending agents, in kind uses.After 10% dithiocyano-methane missible oil medicine, the preventive effect of 30 days and 60 days is respectively 71.9%, 40.2%; After 10% fluorine pyrrole bacterium amide suspending agents medicine, the preventive effect of 30 days and 60 days is respectively 70.7%.65.4%.Dithiocyano-methane and the composite rear synergistic effect of fluorine pyrrole bacterium acid amides are obvious, to the preventive effect of balsam pear root-knot nematode significantly better than single dose.
Five, wetting powder processing and application example
The ratio in formula such as active component, various auxiliary agent and filler is fully mixed, after ultra-fine pulverizer disintegrating, obtains wetting powder.
Embodiment 7:30% dithiocyano-methane fluorine pyrrole bacterium acid amides wetting powder
Dithiocyano-methane 20%, fluorine pyrrole bacterium acid amides 10%, lauryl sodium sulfate 2%, sodium lignin sulfonate 5%, naphthalene sulfonate 3%, kaolin complements to 100%.
This embodiment is applied to romaine lettuce root-knot nematode.30% dithiocyano-methane fluorine pyrrole bacterium acid amides wetting powder is pressed 70g preparation/ha consumption thin up and drench ground, after medicine, the control efficiency of 30 days and 60 days is respectively 89.4%, 86.4%.10% dithiocyano-methane wetting powder presses 150g preparation/ha and 10% fluorine pyrrole bacterium acid amides wetting powder by 150g preparation/ha, in kind uses.After 10% dithiocyano-methane wettable powder medicinal, the preventive effect of 30 days and 60 days is respectively 78.1%, 50.6%; After 10% fluorine pyrrole bacterium acid amides wettable powder medicinal, the preventive effect of 30 days and 60 days is respectively 75.4%, 71.4%.Dithiocyano-methane and the composite rear synergistic effect of fluorine pyrrole bacterium acid amides are obvious, to the preventive effect of romaine lettuce root-knot nematode significantly better than single dose.
Six, water dispersible granules processing and application example
Active component, dispersant, wetting agent, disintegrant and the filler ratio in formula is mixed, becomes wetting powder through air-flow crushing, then add a certain amount of water mixing extruding and make material.Water dispersible granules is obtained after drying screening.
Embodiment 8:80% dithiocyano-methane fluorine pyrrole bacterium acid amides water dispersible granules
Dithiocyano-methane 55%, fluorine pyrrole bacterium acid amides 25%, Negel 4%, sodium lignin sulfonate 2%, lauryl sodium sulfate 5%, amine sulfate 2%, kaolin complements to 100%.
This embodiment is applied to control wheat root-knot nematode.80% dithiocyano-methane fluorine pyrrole bacterium acid amides water dispersible granules is pressed 100g ai/ha thin up and drench ground, after medicine, the control efficiency of 30 days and 60 days is respectively 87.3%, 82.5%.20% dithiocyano-methane water dispersible granules presses 150gai/ha, and 10% fluorine pyrrole bacterium acid amides water dispersible granules presses 150g ai/ha, in kind uses.After 20% dithiocyano-methane water dispersible granules medicine, the preventive effect of 30 days and 60 days is respectively 78.2%, 45.4%; After 10% fluorine pyrrole bacterium acid amides water dispersible granules medicine, the preventive effect of 30 days and 60 days is respectively 75.6%, 72.1%.Dithiocyano-methane and the composite rear synergistic effect of fluorine pyrrole bacterium acid amides are obvious, to the preventive effect of wheat root-knot nematode significantly better than single dose.
Seven, granule processing and application example
Active component, other auxiliary element are mixed successively in the ratio of formula, dressing obtains granule
Embodiment 9:10% dithiocyano-methane fluorine pyrrole bacterium acid amides granule
Dithiocyano-methane 6%, fluorine pyrrole bacterium acid amides 4%, white carbon 6%, adhesive 1%, colouring agent 0.5%, granular calcium carbonate complements to 100%.
This embodiment is applied to control banana root-knot nematode root-knot nematode.98% dithiocyano-methane fluorine pyrrole bacterium acid amides granule is pressed 100g ai/ha ditch spread process, and after medicine, the control efficiency of 30 days and 60 days is respectively 90.4%, 87.2%.10% dithiocyano-methane granule presses 150g ai/ha, and 5% fluorine pyrrole bacterium acid amides granule presses 150gai/ha, in kind uses, and after 10% dithiocyano-methane Granular pesticide, the preventive effect of 30 days and 60 days is respectively 79.6%, 47.3%; After 5% fluorine pyrrole bacterium acid amides Granular pesticide, the preventive effect of 30 days and 60 days is respectively 77.4%, 74.2%.Dithiocyano-methane and the composite rear synergistic effect of fluorine pyrrole bacterium acid amides are obvious, to the preventive effect of banana root-knot nematode significantly better than single dose.
Embodiment 10:2.5% dithiocyano-methane fluorine pyrrole bacterium acid amides granule
Dithiocyano-methane 2%, fluorine pyrrole bacterium acid amides 0.5%, adhesive 1%, colouring agent 0.5%, dispersant 0.5%, silica sand complements to 100%.
This embodiment is applied to control peanut root-knot nematode.0.5% dithiocyano-methane fluorine pyrrole bacterium acid amides granule is pressed 100g ai/ha consumption ditch spread process, and after medicine, the control efficiency of 30 days and 60 days is respectively 88.4%, 85.5%.5% dithiocyano-methane granule presses 150g ai/ha, and 5% fluorine pyrrole bacterium acid amides granule presses 150gai/ha, in kind uses.After 5% dithiocyano-methane Granular pesticide, the preventive effect of 30 days and 60 days is respectively 77.2%, 46.5%; After 5% fluorine pyrrole bacterium acid amides Granular pesticide, the preventive effect of 30 days and 60 days is respectively 75.1%, 70.4%.Dithiocyano-methane and the composite rear synergistic effect of fluorine pyrrole bacterium acid amides are obvious, to the preventive effect of peanut root-knot nematode significantly better than single dose.
Claims (4)
1. a nematicidal composition, is characterized in that: containing active ingredient dithiocyano-methane (A) and fluorine pyrrole bacterium acid amides (B) in composition, and (A) is 100: 1-1: 100 with the mass ratio of (B).
2. nematicidal composition according to claim 1, is characterized in that: active ingredient (A) is 50: 1-1: 50 with the mass ratio of (B).
3. nematicidal composition according to claim 2, is characterized in that: active ingredient (A) is 10: 1-1: 10 with the mass ratio of (B).
4. the nematicidal composition described in claims 1 to 3 is for preventing and treating the purposes of Plant nematode.
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