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Composite bactericide comprising prochloraz and use thereof

A technology for compounding fungicides and fungicides, applied in the directions of fungicides, biocides, biocides, etc., can solve the problems such as the decline of control effect, the limitation of disease prevention spectrum and application spectrum, and the increase of drug effect is not easy. drug resistance, good effect

Active Publication Date: 2012-11-21
浙江威尔达化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the control effect of rice bakanae disease and various tropical fruit diseases has declined due to drug resistance, and drug resistance has become the main factor restricting the application of prochloraz
In addition, the antibacterial spectrum of prochloraz is concentrated, and the limitation of disease prevention spectrum and application spectrum also limits its greater role

Method used

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  • Composite bactericide comprising prochloraz and use thereof
  • Composite bactericide comprising prochloraz and use thereof
  • Composite bactericide comprising prochloraz and use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Embodiment 1, indoor formula screening:

[0028] Toxicity and synergistic coefficients were determined by dissolving prochloraz technical substance and 70% Dysenlian WP respectively in acetone and sterile water according to different weight ratios, and using mycelium growth method to determine the effect on cucumber anthracnose bacteria (Table 1). Inhibition, then calculate the EC 50 value and synergy factor.

[0029] According to the main prevention and control objects, select the ratio of synergistic coefficient (SR) ≥ 1.5, and carry out appropriate dosage form processing.

[0030] Table 1. Formula screening for the control of cucumber anthracnose

[0031]

[0032] Note: The above brackets refer to the weight ratio of the two components (prochloraz and prochloraz), SR=theoretical EC 50 Value / measured EC 50 value.

Embodiment 2

[0033] Embodiment 2, indoor formula screening:

[0034] Toxicity and synergistic coefficients were determined by dissolving prochloraz and pyraclostrobin in acetone at different weight ratios, using the mycelium growth method to measure the inhibitory effect on strawberry anthracnose bacteria (Table 2), and then calculating EC 50 value and synergy factor.

[0035] Table 2. Formula screening for preventing and treating strawberry anthracnose

[0036]

[0037] Note: The above brackets refer to the weight ratio of the two components, SR=theoretical EC 50 Value / measured EC 50 value.

Embodiment 3

[0038] Embodiment 3, indoor formula screening:

[0039] Toxicity and synergistic coefficient are determined by dissolving the prochloraz technical substance and 70% Disenlian WP respectively in acetone and sterile water according to different weight ratios, and adopting mycelium growth method to determine the effect on pepper black spot anthracnose bacteria (Table 3 ) inhibition, and then calculate the EC 50 value and synergy factor.

[0040] According to the main prevention and control objects, select the ratio of synergistic coefficient (SR) ≥ 1.5, and carry out appropriate dosage form processing.

[0041] Table 3. Formula screening for preventing and controlling pepper anthracnose

[0042]

[0043] Note: The above brackets refer to the weight ratio of the two components, SR=theoretical EC 50 Value / measured EC 50 value.

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PUM

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Abstract

The invention discloses a composite bactericide comprising prochloraz. The composite bactericide comprises the following ingredients by weight: 10%-90% of component A and 90%-10% of component B, wherein the component A is prochloraz; and the component B is thioneb, pyraclostrobin or flutriafol. The composite bactericide can be prepared to be emulsion type bactericide and powder / grain type bactericide. The composite bactericide can be used to control diseases of vegetables or fruit trees, such as cucumber anthracnose, tomato anthracnose, pepper anthracnose, fruit tree dry rot, bamboo rust disease, strawberry anthracnose, grape anthracnose, and hickory dry rot.

Description

technical field [0001] The invention relates to a fungicide, in particular to a compound fungicide used for preventing and treating vegetable and fruit tree diseases. Background technique [0002] Prochloraz [Prochloraz, the chemical name is N-propyl-N[2-(2,4,6-trichlorophenoxy) ethyl] imidazol-1-formamide], which was developed by the British Boost company in 1974 It was synthesized for the first time in 1977 and introduced to the market in 1977 as an agricultural fungicide with trade names such as Sporatk, Mirage and Sporgon. Prochloraz is a kind of fungicide with certain systemic effect, and its mechanism of action is to destroy the cell membrane function of the fungus by inhibiting the biosynthesis of one of the main components of the fungal cell membrane, ergosterol (sterol). Its target in bacteria is the C14 demethylase (C14-demethylase) in the ergosterol biosynthesis pathway in fungi, which belongs to the demethylation inhibitors in the ergosterol biosynthesis inhibit...

Claims

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Application Information

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IPC IPC(8): A01N47/38A01N47/14A01N47/24A01N43/653A01P3/00
Inventor 张传清陈聃吴慧明时浩杰
Owner 浙江威尔达化工有限公司
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