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A kind of fungicidal composition and its application

A composition and fungicidal technology, applied in the fields of application, fungicide, biocide, etc., can solve the problems of drug resistance of bacterial strains, rapid reproduction of Botrytis cinerea, large genetic variation, etc., to achieve delayed drug resistance and good synergistic growth Efficacy, the effect of expanding the bactericidal spectrum

Active Publication Date: 2015-08-12
SHENYANG SINOCHEM AGROCHEMICALS R&D CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Oxazole fungicides such as pyridoxazole, vinclozolin, fenclozolin, and cyclozolin have good control effects on gray mold of various crops, but after more than ten years of continuous use and Botrytis cinerea Rapid reproduction and large genetic variation result in poor efficacy of most potions
The history of fungicide use shows that long-term repeated use of the same type of fungicides, especially those with a single site of action, can easily cause some strains of the disease to develop resistance, and the efficacy of the fungicides will be significantly reduced.

Method used

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  • A kind of fungicidal composition and its application
  • A kind of fungicidal composition and its application
  • A kind of fungicidal composition and its application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Example 1 Control of cucumber gray mold test

[0050]The potted two-leaf cucumber seedlings of the variety "Shandong Mici" were sprayed with an aqueous solution of active components (the concentration is as follows) and after 24 hours, the cucumber gray mold spore suspension was inoculated on the cucumber leaves, and then placed Cultivate in a climate chamber with a temperature of 18±1°C and a relative humidity of 90±5%, and measure the development degree of pathogen infection on the leaves after 3 days. See Table 1 and Table 2 for the activity data results of each individual active component and the composition of the present invention against gray mold of cucumber.

[0051] The results show that the observed potency values ​​of the composition are all greater than the calculated potency values, and the composition exhibits a synergistic effect within the test proportion range.

[0052] Table 1 The activity of individual active components

[0053]

[0054] Table 2...

Embodiment 2

[0056] Example 2 Control of kidney bean sclerotinia test

[0057] This test adopts the toxic medium method, that is, according to the designed concentration, the sample is added to the melted PDA medium to make a toxic plate, and then inoculated with Sclerotinia sclerotiorum, and placed in a constant temperature incubator at 24±1°C for cultivation . After 3 days, measure the colony diameter, use the following formula to calculate the bacteriostatic rate, and obtain the observed efficacy. Composition interaction analysis uses the Colby formula described above. See Table 3 and Table 4 for the activity data results of each individual active component and the composition of the present invention for Sclerotinia sclerotiorum.

[0058]

[0059] The results show that the observed potency values ​​of the composition are all greater than the calculated potency values, and the composition exhibits a synergistic effect within the test proportion range.

[0060] Table 3 The activity...

Embodiment 3

[0065] Example 3 Control Rapeseed Leukoplakia Test

[0066] This test adopts the poisonous medium method, that is, according to the designed concentration, the sample is added to the melted PDA medium to make a poisonous plate, then inoculated with rapeseed white spot bacteria, and cultured in a constant temperature incubator at 25±1°C. After 3 days, measure the colony diameter, use the following formula to calculate the bacteriostatic rate, and obtain the observed efficacy. Composition interaction analysis uses the Colby formula described above. See Table 5 and Table 6 for the activity data results of each individual active component and the composition of the present invention for rapeseed white spot disease.

[0067]

[0068] The results show that the observed potency values ​​of the composition are all greater than the calculated potency values, and the composition exhibits a synergistic effect within the test ratio range.

[0069] Table 5 Activity of individual activ...

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Abstract

The invention belongs to the field of agricultural fungicides and particularly relates to a fungicide composition and application of the fungicide composition. The fungicide composition comprises active components A and B, wherein the weight ratio of the component A to the component B is in a range from 1:100 to 100:1; the component A is selected from a fungicide penthiopyrad; the component B is selected from an oxazoles fungicide. The fungicide composition is particularly suitable for preventing and treating various plant pathogenic fungus diseases, such as plant gray mold, sclerotiniose, core rot diseases, southern blight and leukoderma.

Description

technical field [0001] The invention belongs to the field of agricultural fungicides, in particular to a fungicide composition and its application. Background technique [0002] The new fungicide penthiopyrad has high-efficiency and broad-spectrum fungicidal activity. It not only has good activity against rust and sclerotinia, but also shows good fungicidal activity against gray mold, powdery mildew and apple scab. Its structural formula is as follows: [0003] [0004] The fungicide is suitable for crops and fruit trees including apple, pear, peach, citrus, tomato, cucumber, grape, wheat, rice and lawn, etc. It is mainly used to prevent and control scab, rust, powdery mildew, sheath blight, early blight, fungal Sclerotinia and botrytis etc. [0005] Oxazole fungicides, such as pyridoxazole, vinclozolin, fenclozolin, cyclozolin, etc., have good control effects on botrytis cinerea in various crops, but after more than ten years of continuous use and Botrytis cinerea Rap...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N43/80A01N43/76A01P3/00A01N43/56
Inventor 孙芹李志念司乃国王军锋刘君丽赵杰
Owner SHENYANG SINOCHEM AGROCHEMICALS R&D CO LTD