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Fungicidal composition and application thereof

A composition and fungicidal technology, applied in the application, fungicide, biocide and other directions, can solve the problems of decreased disease control effect, single action mechanism and action site, loss of high efficiency, etc., and achieves obvious synergistic effect. , improve flexibility, improve the effect of comprehensive prevention and control

Pending Publication Date: 2019-05-28
SHENYANG SINOCHEM AGROCHEMICALS R&D CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most triazole fungicides have active characteristics such as high efficiency, broad-spectrum, long-acting, strong systemicity and stereoselectivity, but the mechanism and site of action are single, and long-term and frequent use has caused serious resistance to diseases. Drug resistance, many varieties have lost their original high efficiency due to resistance problems, and the control effect on some diseases has dropped significantly

Method used

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  • Fungicidal composition and application thereof
  • Fungicidal composition and application thereof
  • Fungicidal composition and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Example 1 Control of rice sheath blight test

[0046] Potted rice seedlings with uniform growth and the same leaf age were selected, and the leaves were sprayed with a crop sprayer according to the above-mentioned chemical concentration, and placed in a fume hood to dry after spraying. After 24 hours, the rice sheath blight pathogen was inoculated, and the inoculated bacteria block method was used to inoculate at the base of the rice seedlings. After inoculation, place in artificial climate chamber (temperature: day 28°C, night 25°C, relative humidity: 95%) to observe the results after 7 days of moisturizing cultivation. The degree of development of pathogen infection on rice leaf sheaths and leaves was investigated.

[0047]See Table 1 and Table 2 for the activity data results of each individual active component and the composition of the present invention for controlling rice sheath blight. The observed potency values ​​of the compositions are all greater than the c...

Embodiment 2

[0053] Example 2 Test of Controlling Rice Blast

[0054] Select rice (variety: "Liaoxing No. 1") potted seedlings with uniform growth and the same leaf age, and use a crop sprayer to spray the leaves according to the concentration of the medicament described below. After spraying, place them in a fume hood to dry. Blank control without drug. 24 hours later, the rice blast pathogen was inoculated. The treated potted rice seedlings after inoculation were placed in an artificial climate greenhouse (temperature: 28° C. day, 25° C. night, relative humidity: 95%) for cultivation, and carried out grading investigation after 7 days. See Table 3 and Table 4 for the activity data results of each individual active component and the composition of the present invention for controlling rice blast. 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.

[0055] ...

Embodiment 3

[0059] Example 3 Cucumber Powdery Mildew Test

[0060] Potted cucumber seedlings (variety: Xintaimici) with uniform growth and the same leaf age were selected, and sprayed on the crop sprayer according to the designed dosage, and a blank control without pesticide was set up. After 24 hours, the pathogenic bacteria were inoculated, and then moved to the greenhouse for normal management. The culture conditions (temperature: 23-28°C during the day and 18-20°C at night) were cultivated for 8 days before the results were investigated. Investigate the degree of development of the fungal infestation on each leaf. See Table 5 and Table 6 for the activity data results of each individual active component and the composition of the present invention for controlling cucumber powdery mildew.

[0061] 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.

[0062...

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Abstract

The invention belongs to the field of agricultural fungicides, and particularly relates to a fungicidal composition and application thereof. The composition comprises two active components including an active component A and an active component B with the weight ratio being (1 to 99)-(99 to 1); the active component A is selected from a compound shown by a following general formula I; and the component B is selected from one or more of triazole fungicides. The fungicidal composition disclosed by the invention is particularly suitable for preventing and treating various plant pathogenic fungi diseases such as sheath blight, rust disease, rice blast, powdery mildew, gray mold, anthracnose, early blight, venturia inaequalis, alternaria leaf spot, root rot and leaf mold.(The general formula I is described in the following description.).

Description

technical field [0001] The invention belongs to the field of agricultural fungicides, and in particular relates to a fungicidal composition containing pyrazole amide compounds and triazole fungicides or salts thereof and an application thereof. Background technique [0002] Patent CN104649973A1 discloses a pyrazole amide compound and its use, wherein it is reported that the compound represented by the following general formula I has good activity against various fungal diseases. [0003] [0004] Among them, R 1 =CH 3 , R 2 The compound of =n-Pr (compound 5 in CN104649973A1) has very good activity on various diseases. [0005] Triazole fungicides have a different mechanism of action from other systemic fungicides. They affect the formation of fungal cell walls by hindering the biosynthesis of fungal ergosterol, and have good control effects on most fungal diseases that endanger crop growth. Most triazole fungicides have active characteristics such as high efficiency, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N43/56A01N43/653A01N55/10A01N43/50A01P3/00
Inventor 单中刚司乃国李志念王刚赵杰兰杰王军锋孙芹王斌孙庚李轲轲李斌
Owner SHENYANG SINOCHEM AGROCHEMICALS R&D CO LTD
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