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A compound for preventing and treating grape downy mildew and composition using same

A technology for grape downy mildew and composition, which is applied in the field of pesticide compounds and compositions thereof, and can solve the problems of reduced control effect and loss of control effect of systemic fungicides

Inactive Publication Date: 2016-07-06
GUIZHOU FRUIT INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, due to long-term single use, bacteria have developed drug resistance to varying degrees. Metalaxyl has almost lost its control effect in old grape production areas, and the control effect of systemic fungicides such as fosfo-aluminum and radomier has gradually decreased.

Method used

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  • A compound for preventing and treating grape downy mildew and composition using same
  • A compound for preventing and treating grape downy mildew and composition using same
  • A compound for preventing and treating grape downy mildew and composition using same

Examples

Experimental program
Comparison scheme
Effect test

preparation Embodiment 1

[0017] Synthetic steps:

[0018] (1) Add 0.4mol 2-fluoro-4 bromotoluene and 14.4g benzoyl peroxide into a reaction flask equipped with mechanical stirring and reflux condenser, heat to reflux under stirring, then add 0.4mol 2-bromo-2,5 - Diketopyrrole (NBS) was added to the reaction flask in batches within 20 minutes, heated to reflux for 2 hours, and the reaction yield was 65% (GC). The reaction solution was neutralized with sodium carbonate, concentrated, dissolved with industrial absolute ethanol (1g: 1mL) under reflux, cooled to -15°C for recrystallization, the purity was about 90% (GC). After multiple recrystallizations, a white crystalline product was obtained with a purity of >99%.

[0019] (2) Under the protection of nitrogen, add 0.05mol carbazole and 100mL DMF to the reaction flask equipped with mechanical stirring and reflux condenser, cool to 5°C in an ice bath, slowly add 0.1mol of phosphorus oxychloride dropwise under stirring, dropwise Upon completion, the ice...

preparation Embodiment 2

[0027] The organic compound prepared in step (4) above was placed in a quartz tube (quartzampoule). The prepared compound was vacuum dehydrated at a temperature of 100°C. The tube was disengaged and placed in a crystal growth furnace. Crystals were grown by the Bridgman method in a double furnace with an insulating film. Finally, colorless strip crystals were obtained. Carry out single crystal X-ray diffraction crystallographic analysis to this crystal, its crystallographic parameter is as follows: be orthorhombic system, its space group is P21, β=89.5°.

preparation Embodiment 3

[0029]

[0030] The above raw materials are weighed according to the ratio and then added to the shearing tank, sheared for 30 minutes to mix the materials evenly, turn on the circulating water, and ball mill the materials at a certain flow rate, the temperature is controlled below 40 degrees, and the fineness exceeds 325 mesh sieves. After grinding for 1.5 hours, a uniform milky liquid is obtained.

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Abstract

The invention provides an organic compound for preventing and treating grape downy mildew and a composition thereof. The composition can be prepared into preparation forms, such as soluble liquid, microemulsion, aqueous emulsion, suspension emulsion, seed coating, wettable powdery granules, sustained-release granules, controlled-release granules, water-dispersible granules, dry suspension emulsion or granules used directly. The composition is used for preventing and treating the grape downy mildew.

Description

technical field [0001] The invention relates to the field of pesticide compounds and compositions thereof, in particular to a compound for preventing and controlling grape downy mildew and the composition thereof. Background technique [0002] Grape downy mildew is a worldwide disease caused by a fungus that originated on wild grapes in eastern North America. In the late 19th century, with the introduction and cultivation of European grapes to the world, grape downy mildew spread to all viticultural areas in the world. For example, the earliest invented chemical fungicide Bordeaux mixture was discovered for the occurrence of the disease. It occurs in every grape growing area in my country, and the disease mainly infects the young organs of plants, harming leaves, young shoots and young fruits. If the control is not timely, downy mildew will have a great impact on the vine vigor and its yield and quality. Grape downy mildew is distributed in almost all grape producing areas...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D403/10A01N43/647A01P3/00
CPCA01N43/647C07D403/10
Inventor 罗福贤刘涛蔡永强罗欢彭志军
Owner GUIZHOU FRUIT INST