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Application of benzothidiazole derivatives as activator for plant disease-resistant agent

A compound and powdery mildew technology, applied in plant growth regulators, chemicals for biological control, application, etc., can solve problems such as slow effect and insufficient understanding of mechanism of action

Inactive Publication Date: 2006-11-29
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This plant activator has inhibitory effects on fungal and bacterial diseases, but due to insufficient understanding of its mechanism of action at that time, it was believed that its effect was slow, so it has not been greatly developed.

Method used

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  • Application of benzothidiazole derivatives as activator for plant disease-resistant agent
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  • Application of benzothidiazole derivatives as activator for plant disease-resistant agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] 1. Diseases of the test object:

[0022] 1.1 Pot test: one bacterial disease: rice bacterial blight; three fungal diseases: rice blast, melon anthracnose and melon powdery mildew.

[0023] 2. Test crops: rice, cucumber.

[0024] 3. The concentration setting of the test agent:

[0025] 3.1 Determination of potted plants: use 200mg / L for rice bacterial blight, 100mg / L and 200mg / L for rice blast, and 50mg / L and 100mg / L for melon anthracnose and melon powdery mildew.

[0026] 4. Test method:

[0027] 4.1 Determination of potted plants: Sow various crops in advance, weigh the samples quantitatively, dissolve them in DMF, add an appropriate amount of surfactant, and dilute with water to the set concentration. Use the retrograde method to carry out drug treatment 5 to 6 times seven days, four days, two days, one day and the same day before inoculation, and then inoculate pathogenic bacteria at the same time at one time. Observe the effect of the drug on the occurrence and ...

Embodiment 2

[0045] 1. Materials and methods

[0046] 1.1 Test material

[0047] Shanxi tobacco (Nicotiana tabacum L.var.xanthi-NC) dead spot host,

[0048] Control drug: benzo-1,2,3-thiadiazole-7-carboxylic acid thiomethyl ester (BTH).

[0049] 1.2 Induction effect test method

[0050] On the 5-6-leaf-year-old Shanxi tobacco plants, select the leaves suitable for the test (normal leaf shape, no disease and no insects), apply pesticides at the base first, and apply pesticides at a concentration of 100 μg / mL, and use a brush after a certain period of time. The spare poison source (3.0×10 -3 ) evenly spread on the leaves sprinkled with corundum, select 3 to 5 tobacco leaves per plant to inoculate with TMV, use the tobacco without spraying as the control, observe the drug efficacy and damage every day, check the results after 7 days and calculate according to the following formula Induction effect (%) was obtained.

[0051] X = CT ...

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Abstract

An application of the benzothiabiazole as the disease resistance activating agent for preventing and treating the hoja blanca and blast of rice, the powdery mildew of melon, the necrosis host of Nicotiana tabacum L. var. Xanthi-NC, etc is disclosed.

Description

technical field [0001] The invention relates to the use of a benzothiadiazole derivative, in particular to its application in a plant disease resistance activator. Background technique [0002] Most traditional pesticides are aimed at killing harmful organisms, but it is difficult to escape the generation of "pesticide public hazards". Under the pressure of safety, ecology and environment, the development cycle of new pesticides is gradually extended, the investment funds are increasing year by year, and the success rate of development is declining. Although chemical pesticides still play an important role that cannot be replaced by other methods, using the plant's own defense system to prevent diseases and treat insects will be one of the development directions of pesticides in the future. [0003] Salicylic acid and dichloroisonicotinic acid were the first compounds found to have anti-disease activation activity, but the effect was not satisfactory. The time and level of...

Claims

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Application Information

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IPC IPC(8): A01N43/828A01P1/00
Inventor 钱旭红徐玉芳赵振江黄军海田文红
Owner EAST CHINA UNIV OF SCI & TECH
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