Bactericidal composition containing benthiavalicarb isopropyl and azoxystrobin

A technology of benthiazil and azoxystrobin, which is applied in the direction of fungicides, biocides, biocides, etc., can solve the problem of no effect on the movement of zoospores and zoospores, improve the control effect, reduce the cost of medication, The effect of lowering the dosage

Inactive Publication Date: 2013-11-20
GUANGDONG ZHONGXUN AGRI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It has good activity against oomycete mycoses. Benthiopyram also has good fungicidal activity against Phytophthora, and it has a good inhibitory effect on the formation of sporangia and the germination of sporangia at low concentrations. but had no effect on zoospore release and zoospore movement

Method used

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  • Bactericidal composition containing benthiavalicarb isopropyl and azoxystrobin
  • Bactericidal composition containing benthiavalicarb isopropyl and azoxystrobin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Formulation Example 1: 60% benthiazil · azoxystrobin water dispersible granules:

[0017] Benzamid 40%,

[0018] Azoxystrobin 20%,

[0019] Sodium lignosulfonate 4%,

[0020] Sodium Naphthalene Sulfonate Formaldehyde Condensate 3%,

[0021] Sodium Chloride 2%,

[0022] Soluble Starch 1%,

[0023] Polyvinyl alcohol 3%,

[0024] Kaolin make up to 100%.

[0025] The above formula was dry crushed in proportion, extruded to granulate, dried, and sieved to prepare 60% benthiazil-azoxystrobin water-dispersible granules.

[0026] Formulation Example 2 : 24% benthiazil · azoxystrobin suspension concentrate:

[0027] Benzamid 16%,

[0028] Azoxystrobin 8%,

[0029] Sodium methyl naphthalene sulfonate formaldehyde condensate (dispersant) 5%,

[0030] 0203B (surfactant) 6%,

[0031] Silica (filler) 5%,

[0032] Magnesium aluminum silicate (suspension agent) 0.4%,

[0033] Ethylene glycol (antifreeze) 3%,

[0034] Tributyl phosphate (defoamer) 1.5%,

[0035] Wa...

Embodiment 1

[0037] Bioassay Example 1 : Indoor pot experiment of benthiazil and azoxystrobin mixed combination on grape downy mildew.

[0038] The test method was carried out according to Wu Wenjun's "Introduction to Experimental Techniques of Plant Chemical Protection" (1993). The original drugs of benzamid and azoxystrobin were respectively made into 24% suspension concentrates for laboratory tests. According to the requirements of the experiment, single doses and types with corresponding mass ratios were made respectively. The specific data of the test results are shown in Table 1.

[0039] Table 1. Indoor pot test data.

[0040]

[0041] Calculate the toxicity index of each agent and the co-toxicity coefficient (CTC value) of the mixture according to Sun Yunpei's method. When CTC≤80, it is antagonism, 80﹤CTC﹤120 is additive, and CTC≥120 is synergistic.

[0042] Through the indoor colony inhibition growth test, it was found that benzamid and azoxystrobin had a synergistic inhib...

Embodiment 2

[0043] Bioassay Example 2: Field efficacy test of controlling grape downy mildew.

[0044] Grape downy mildew was controlled by using 60% benzodiazepine·azoxystrobin water dispersible granules and 24% benzodiazepine·azoxystrobin suspension concentrate. The test time was June 2012, and the test site was Yueyang City, Hunan Province. Fields with severe downy mildew were selected and applied by mechanical spraying. 25% azoxystrobin suspension concentrate (Syngenta Co., Ltd.) was used as the control drug, and the test results are shown in Table 2.

[0045] Table 2. Field efficacy test results for controlling grape downy mildew.

[0046]

[0047] Test shows that 60% benzamid azoxystrobin water dispersible granule of the present invention and 24% benzamid azoxystrobin suspension concentrate have good therapeutic effect to grape downy mildew, 7 days and 14 days after medicine The control effect of the day is better than that of the control agent, and it is a kind of agent wort...

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Abstract

The invention relates to a bactericidal composition containing active ingredients of benthiavalicarb isopropyl and azoxystrobin in a weight ratio of 2:1. The composition is mainly used for controlling downy mildew, has good control effect and is a bactericide worth popularization.

Description

technical field [0001] The invention belongs to the field of pesticide compound preparations, in particular to a fungicidal composition containing benthiazil and azoxystrobin. Background technique [0002] Benthiazil, English name benthiavalicarb-isopropyl, chemical name [[(6-fluorobenzothiazol-2-yl)-ethylcarbamoyl]-2-methylpropyl]carbamate isopropyl. It has good activity against oomycete mycoses. Benthiopyram also has good fungicidal activity against Phytophthora, and it has a good inhibitory effect on the formation of sporangia and the germination of sporangia at low concentrations. However, it has no effect on the release of zoospores and the movement of zoospores. Field trials with P. vitice, P. melon, and P. crucifer showed similar results. The biochemical mechanism of action of benthiazil is under investigation. Benthiopyram is effective against P. infestans infestans resistant to benzamide functional groups and downy mildew of melons resistant to methoxyacrylate fun...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N47/12A01P3/00A01N43/54
Inventor 朱刚王贵新刘鹏冷忠国陈佛祥王礼文张志伟
Owner GUANGDONG ZHONGXUN AGRI TECH
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