Summary of the invention
The object of the invention is triticonazoles different for the mechanism of action and Fluoxastrobin to carry out composite, providing a kind of agricultural bactericidal composition of efficient, low toxicity, low-residual, for preventing and treating soil-borne disease of crop and root-knot nematode.
For solving the problem, the technical solution adopted in the present invention is: a kind of bactericidal composition containing triticonazole and Fluoxastrobin, active ingredient is made up of triticonazole and Fluoxastrobin, and the ratio of quality and the number of copies of triticonazole and Fluoxastrobin is 1:10 ~ 10:1.
Bactericidal composition of the present invention according to well known to a person skilled in the art method, can be selected suitable pesticidal preparations auxiliary element, being processed into the application forms that the applicable agricultural productions such as granule, suspending agent, water dispersible granules use.
Bactericidal composition of the present invention is mainly used in control soil-borne disease of crop and root-knot nematode.
, early stage or the use of disease initial stage of origination should be there is in disease when applying in bactericidal composition of the present invention.
Bactericidal composition of the present invention, usually adopts the method for spreading fertilizer over the fields or filling with root to use, also can adopt other operation techniques agriculturally applied as required.
Bactericidal composition provided by the invention has following features:
1, bactericidal composition provided by the invention, in certain ratio range, obvious synergistic effect is shown to crop root disease, the control efficiency of composition is significantly improved than single dose, reduce the using dosage of agricultural chemicals, reduce drug cost, decrease the adverse effect of agricultural chemicals to ecotope.
2, two kinds of effective ingredient mechanism of action of bactericidal composition provided by the invention are different, can overcome the single shortcoming making with medicament easily produce resistance for a long time, extend the service life of medicament, to the comprehensive regulation important in inhibiting of disease.
3, the bactericidal composition provided of the present invention is to crop safety.
Embodiment
In order to make object of the present invention, technical scheme and advantage more short and sweet, the following specific embodiment of the present invention is described, but the present invention is only limitted to absolutely not these embodiments.The following stated is only the good embodiment of the present invention, only for describing the present invention, can not be interpreted as the restriction to scope of the present invention.It should be pointed out that all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Content described in embodiment is all weight percentage.
Embodiment 1:5% triticonazole Fluoxastrobin granule.
Triticonazole 2.5%, Fluoxastrobin 2.5%, sodium lignin sulfonate 5%, polyvinyl alcohol 2%, kaolin add to 100%.First by the obtained 5% triticonazole Fluoxastrobin granule of triticonazole, Fluoxastrobin and auxiliary agent sodium lignin sulfonate, kaolin extruder grain after airslide disintegrating mill.
Embodiment 2:20% triticonazole Fluoxastrobin suspending agent.
Triticonazole 15%, Fluoxastrobin 5%, acrylate homopolymer sodium salt (dispersant) 3%, NP-10 (surfactant) 6%, white carbon (filler) 5%, aluminium-magnesium silicate (suspending agent) 0.4%, ethylene glycol (antifreezing agent) 3%, (defoamer) 1.5%, water complement to 100%.After above-mentioned each component in proportion coarse crushing, enter in blender and mix, more namely obtain 20% triticonazole Fluoxastrobin suspending agent after sand mill grinding.
Embodiment 3:40% triticonazole azoxystrobin water dispersible granule.
Triticonazole 20%, Fluoxastrobin 20%, dioctyl sodium sulfosuccinates acid receives 4%, naphthalenesulfonic acid-formaldehyde condensate 3%, sodium chloride 1%, soluble starch 1%, polyvinyl alcohol 2%, disintegrant 2%, and surplus is kaolin.By above-mentioned formula dry pulverization process, extruder grain, drying, the obtained 40% triticonazole azoxystrobin water dispersible granule of screening preparation in proportion.
Assays Example 1: triticonazole and Fluoxastrobin mixture combine and measure the synergy of Cucumber root disease.
For understanding triticonazole and Fluoxastrobin mixture further to the synergy type of crop root disease, the present inventor has carried out a large amount of field formulation screening tests to triticonazole and Fluoxastrobin mixture, by field trial, we find when triticonazole, Fluoxastrobin carry out field trial according to the ratio mixture of 1:10-10:1.The use of the two mixture, is significantly improved than the use preventive effect of single formulation, also there is great significance than the type control efficiency of other compound proportions.
The triticonazole of different quality ratio and the field control effectiveness test scheme of Fluoxastrobin mixture composition for preventing and controlling Cucumber root disease as follows:
Triticonazole, Fluoxastrobin are made granule agent by single dose and test proportion requirement respectively test, unify dispenser in Cucumber root disease their early stage, after dispenser, investigation in 7 days, 14 days is actual prevents and treats situation.The actual control efficiency in the field of proportioning to Cucumber root disease of different proportion is compared with this.
Table 1, triticonazole, Fluoxastrobin single dose mixture are to Cucumber root disease field test data.
Calculate the toxicity index of each medicament and the co-toxicity coefficient (CTC value) of mixture according to the abundant method of Sun Yun, when CTC≤80 are antagonism, 80 ﹤ CTC ﹤ 120 are summation action, and CTC >=120 are synergistic effect.
Found by the test of indoor bacterium colony Developing restraint, triticonazole, Fluoxastrobin have extraordinary control efficiency to Cucumber root disease afterwards according to the ratio of 1:10-10:1 is composite, and the two compound synergic is remarkable.
Assays Example 2: the field control effectiveness test of triticonazole and Fluoxastrobin mixture composition for preventing and controlling cucumber fusarium axysporum.
Reagent agent and dispenser dosage:
(1) 20% triticonazole Fluoxastrobin suspending agent (1:1), mu 100 grams, preparation.
(2) 40% triticonazole azoxystrobin water dispersible granules (1:1), mu 50 grams, preparation.
Contrast medicament and dispenser dosage:
(3) 20% triticonazole wetting powders, mu 30 grams, preparation.
(4) 20% Fluoxastrobin wetting powders, mu 30 grams, preparation.
Spraying time and application method: the dispenser of cucumber fusarium axysporum their early stage, is watered filling root.
The field control effectiveness test result of table 2, control cucumber fusarium axysporum evil.
Result of the test: in table 2, as can be seen from the test results: after dispenser 7 days, triticonazole of the present invention and Fluoxastrobin mixture composition to cucumber fusarium axysporum preventive effect all more than 70%, significantly better than the single dose of contrast; After dispenser 14 days, triticonazole of the present invention and Fluoxastrobin mixture composition to cucumber fusarium axysporum preventive effect all more than 80%, also significantly better than the single dose of contrast; In process of the test, each medicament is showed no poisoning generation, to crop safety.Illustrate that triticonazole of the present invention and Fluoxastrobin mixture composition are better than single dose, improve actual control efficiency, reduce dosage, reduce costs, reduce medicament to the adverse effect of environment, delay the generation of disease drug resistance, agricultural synthesis is administered and has great significance.
Assays Example 3: the field control effectiveness test of triticonazole and Fluoxastrobin mixture composition for preventing and controlling watermelon blight.
Reagent agent and dispenser dosage:
(1) 20% triticonazole Fluoxastrobin suspending agent (3:1), extension rate 500 times.
(2) 40% triticonazole azoxystrobin water dispersible granules (1:1), extension rate 1000 times.
Contrast medicament and dispenser dosage:
(3) 20% triticonazole suspending agents, extension rate 500 times.
(4) 20% Fluoxastrobin wetting powders, extension rate 500 times.
Spraying time and application method: the dispenser of watermelon field their early stage, is watered even spraying.
The field control effectiveness test result of table 3, control watermelon blight.
Result of the test: in table 3, as can be seen from the test results: after dispenser 7 days, triticonazole of the present invention and Fluoxastrobin mixture composition to watermelon blight preventive effect all more than 70%, significantly better than the single dose of contrast; After secondary dispenser 14 days, triticonazole of the present invention and Fluoxastrobin mixture composition were to watermelon blight preventive effect all more than 80%, and also significantly better than the single dose of contrast, in process of the test, each medicament is showed no poisoning and produces, to crop safety.
By above-mentioned field trial, find that in process of the test, each medicament is showed no poisoning generation, to crop safety.Triticonazole of the present invention and Fluoxastrobin mixture composition are better than single dose, can improve actual control efficiency, reduce dosage, reduce costs, and reduce medicament to the adverse effect of environment, delay the generation of disease drug resistance, administer have great significance to agricultural synthesis.