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Fungicidal composition for preventing and treating asparagus stem blight and fungicide

A technology for asparagus stem blight and fungicide, which can be applied in the directions of fungicides, biocides, biocides, etc., and can solve problems such as the discount of pesticide effects.

Inactive Publication Date: 2018-11-30
INST OF PLANT PROTECTION JIANGXI ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The long-term and extensive use of chemical agents for the prevention and treatment of asparagus stem blight in the prior art has led to strong drug resistance in many areas of the pathogen, which greatly reduces the effect of pesticides. Therefore, an alternative agent for the prevention and treatment of asparagus stem blight is sought especially important

Method used

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  • Fungicidal composition for preventing and treating asparagus stem blight and fungicide
  • Fungicidal composition for preventing and treating asparagus stem blight and fungicide
  • Fungicidal composition for preventing and treating asparagus stem blight and fungicide

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Effect test

preparation example Construction

[0022] In the present invention, the preparation method of described emulsifiable concentrate comprises the following steps:

[0023] 1) Mix difenoconazole, propaneamidine, co-solvent, and xylene uniformly to obtain component A;

[0024] 2) Stir and mix the component A and the dispersant to obtain emulsifiable concentrate.

[0025] In the present invention, difenoconazole, propaneamidine, co-solvent, and xylene are uniformly mixed to obtain component A; in the present invention, there is no special limitation on the dissolution time and temperature, and uniform mixing shall prevail.

[0026] In the present invention, after the component A is obtained, the component A and the dispersant are stirred and mixed to obtain the emulsifiable concentrate; the present invention has no special limitation on the time, temperature and rotating speed of the stirring and mixing, and the mixing is uniform.

[0027] In the present invention, the water suspension contains the following raw mat...

Embodiment 1

[0042] Example 1 Indoor Toxicity Determination of Difenoconazole Propanamidine to Phomopsis asparagi (Sacc.)

[0043] According to Sun Yunpei's method, the synergistic effect of drug mixture is evaluated according to the co-toxicity coefficient (CTC), that is, CTC≤80 is synergistic antagonism, 80<CTC<120 is synergistic antagonism, and CTC≥120 is synergistic effect. Measured toxicity index (ATI) = (EC50 of standard drug / EC50 of test drug) × 100; theoretical toxicity index TTI = toxicity index of drug A × percentage of drug A in the mixture + toxicity of drug B Potency index × the percentage content of agent B in the mixture; co-toxicity coefficient (CTC) = [measured toxicity index (ATI) of the mixture / theoretical toxicity index (TTI) of the mixture] × 100

[0044] The test object is the pathogenic bacteria of asparagus stem blight collected from the field, and the method refers to the "People's Republic of China Agricultural Industry Standard NY / T 1156.6-2006", mycelial growth ...

Embodiment 2

[0048] Embodiment 2 A kind of emulsifiable concentrate for preventing and treating asparagus stem blight

[0049]

[0050] Dissolve difenoconazole and propaneamidine in ethanol and xylene, then mix with other calcium dodecylbenzenesulfonate and alkylphenol polyoxyethylene ether, and form a highly dispersed and stable emulsifiable emulsion system after stirring.

[0051] The emulsifiable concentrate obtained above was diluted and sprayed by 800 times, and the control effect was 92.5% and 85.6% in 7 days and 14 days after the medicine; According to 400 times of spraying, the control effects were 83.2%, 71.8% and 81.8%, 72.9% after 7 days and 14 days after application. It can be seen that the compounding of difenoconazole and propaneamidine has obvious synergistic effect, and the control effect on asparagus stem blight is significantly better than that of single agent. The active ingredients are also relatively reduced, thereby reducing the environmental load and reducing the...

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Abstract

The invention provides a composition for preventing and treating asparagus stem blight and a fungicide and belongs to the technical field of prevention and treatment of asparagus blight. The composition comprises difenoconazole and propamidine which are in the weight ratio of (20: 1) to (1: 20). The fungicide provided by the invention comprises the difenoconazole, the propamidine and auxiliaries,wherein the difenoconazole and the propamidine account for 3% to 90% (mass percent) the total amount of the fungicide. According to the composition and the fungicide, the difenoconazole and the propamidine serve as effective ingredients, have a synergistic effect on pathogenic bacteria of the asparagus stem blight in case of mixed use and particularly have an obvious synergistic effect on the asparagus stem blight in a proportion range of (20: 1) to (1: 20). According to the composition and the fungicide, through certain technological means, the fungicide can be prepared through being endowedwith an agricultural common dosage form and can provide an effective management tool for prevention and control on the asparagus stem blight.

Description

technical field [0001] The invention relates to the technical field of prevention and treatment of reed stem blight, in particular to a fungicidal composition and a fungicide for preventing and treating asparagus stem blight. Background technique [0002] Asparagus (Asparagus officinalis Linn.), belongs to Liliaceae Liliaceae, and Asparagus belongs to Asparagus. Asparagus has high nutritional value, can moisten the lungs, relieve cough, eliminate phlegm, and has the functions of inhibiting tumor growth. The laudatory title of "King of Vegetables". In recent years, with the expansion of asparagus cultivation area, the incidence of asparagus stem blight has increased year by year, seriously affecting the yield and quality of asparagus. [0003] The long-term and extensive use of chemical agents for the prevention and treatment of asparagus stem blight in the prior art has led to strong drug resistance in many areas of the pathogen, which greatly reduces the effect of pesticid...

Claims

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Application Information

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IPC IPC(8): A01N43/653A01N37/52A01P3/00
CPCA01N37/52A01N43/653A01N47/44A01N25/04A01N25/14A01N43/707
Inventor 杨迎青兰波谢梅琼孙强陈洪凡王龙江陈建李湘民
Owner INST OF PLANT PROTECTION JIANGXI ACAD OF AGRI SCI
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