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A fungicidal composition containing pyrazole compounds and triazole compounds

A composition and fungicidal technology, which can be applied in the direction of fungicides, biocides, biocides, etc., and can solve the problems of drug efficacy decline and other issues

Active Publication Date: 2015-10-21
SHENYANG SINOCHEM AGROCHEMICALS R&D CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The history of fungicide use shows that long-term repeated use of the same type of fungicide can easily cause some strains of the disease to develop resistance, and the efficacy of the fungicide will be significantly reduced.

Method used

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  • A fungicidal composition containing pyrazole compounds and triazole compounds
  • A fungicidal composition containing pyrazole compounds and triazole compounds
  • A fungicidal composition containing pyrazole compounds and triazole compounds

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0090] Example 1 Control of wheat powdery mildew (Blumeria graminis) test

[0091] Potted wheat seedlings at the two-leaf stage of the cultivar "Liaochun 10" were sprayed with an aqueous solution of the active ingredient (concentrations described below), and 24 hours later, the test plants were inoculated with a spore suspension of wheat powdery mildew. The test plants were cultured in a climate chamber with a temperature of 24±2°C and a relative humidity of 50±5%. After 5 days, the degree of development of pathogen infection on the leaves was visually observed. See Table 7 and Table 8 for the activity data results of each individual active component and the composition of the present invention for controlling wheat powdery mildew. The observed potency values ​​of the compositions are all greater than the calculated potency values, and the compositions show a synergistic effect within the test proportion range.

[0092] Table 7 The activity of individual active ingredients

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Embodiment 2

[0096] Example 2 Control of cucumber powdery mildew (Erysiphe cucurbitacearum) test

[0097] Potted two-leaf cucumber seedlings of the variety "Shandong Mici" were sprayed with an aqueous solution of the active ingredient (concentrations are as follows), and 24 hours later, the test plants were inoculated with a spore suspension of Cucumber powdery mildew. The test plants were cultured in a greenhouse with a temperature of 24±2°C and a relative humidity of 50±5%. After 8 days, the degree of development of pathogen infection on the leaves was visually observed. See Table 9 and Table 10 for the activity data results of each individual active component and the composition of the present invention for controlling cucumber powdery mildew. The observed potency values ​​of the compositions are all greater than the calculated potency values, and the compositions show a synergistic effect within the test proportion range.

[0098] Table 9 Activity of individual active components

[0...

Embodiment 3

[0104] Example 3 Control of wheat rust (Puccinia recondita tritici) test

[0105] Potted wheat seedlings at the two-leaf stage of the variety "Liaochun 10" were sprayed with an aqueous solution of active components (concentrations are as follows), and 24 hours later, the test plants were inoculated with the spore suspension of wheat rust fungus. Place the test plants in a climate chamber at 22-24°C and a relative humidity of 85-90% for 20 hours, and then move them into a greenhouse for cultivation (at a temperature of 24±2°C and a relative humidity of 50±5%). The degree of development of the bacterial infection. See Table 11 and Table 12 for the activity data results of each individual active component and the composition of the present invention for controlling wheat rust. The observed potency values ​​of the compositions are all greater than the calculated potency values, and the compositions show a synergistic effect within the test proportion range.

[0106] Table 11 Act...

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Abstract

The invention discloses an antifungal composition containing an active component A and an active component B. The component A is a compound represented by a formula I as described in the specification; in the formula I, R1 is selected from the group consisting of H, 2-Cl, 2-CH3, 2-OH, 4-Cl, 4-CH3, 4-OCH3, 4-OH, 2,4-2Cl and 2,4-2CH3, R2 is selected from the group consisting of CH3 and C2H5, R3 is selected from the group consisting of H, Cl, CH3 and C2H5, and Q is selected from the group consisting of Q1, Q2 and Q3 represented by formulas as described in the specification. The component B is a triazole bactericide or a salt thereof. The antifungal composition provided by the invention has an obvious synergistic effect and is especially applicable to prevention and treatment of a plurality of plant pathogenic fungal diseases, e.g., powdery mildew, a rust disease and sheath blight.

Description

technical field [0001] The invention belongs to the field of agricultural fungicides, and relates to research on a dual-active-component agricultural fungicidal mixed preparation containing pyrazole compounds, in particular to a fungicidal composition containing pyrazole compounds and triazole compounds. Background technique [0002] The fungicide pyraclostrobin has high-efficiency and broad-spectrum fungicidal activity, and the structural formula of the compound is as follows: [0003] [0004] During the further study of the compound, the inventors found that the isomers and their analogs (such as the compound represented by the general formula I) generated during the preparation of the above-mentioned compound (and its general formula compound) are effective against rice blast, powdery mildew , Rust, sheath blight, downy mildew and other fungal diseases have a good control effect. [0005] [0006] Where: R 1 selected from H, 2-Cl, 2-CH 3 , 2-OH, 4-Cl, 4-CH 3 , ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N47/24A01N43/653A01N55/10A01P3/00
Inventor 李志念单中刚司乃国李淼刘长令
Owner SHENYANG SINOCHEM AGROCHEMICALS R&D CO LTD