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Application of Pseudomonas fluorescens in the control of dicotyledonous weeds and powdery mildew and its bacterial agent, preparation and use method

A technology for Pseudomonas fluorescens and powdery mildew, applied in the directions of botanical equipment and methods, biochemical equipment and methods, herbicides and algicides, etc., to achieve the effect of low cost of use

Active Publication Date: 2021-03-23
TOBACCO RES INST CHIN AGRI SCI ACAD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In recent research, the present inventors found for the first time that the fermentation supernatant and ethyl acetate crude extract of CZ bacterial strain have inhibitory effect on tobacco powdery mildew bacteria and tobacco field weeds; Anti-activity has not been reported

Method used

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  • Application of Pseudomonas fluorescens in the control of dicotyledonous weeds and powdery mildew and its bacterial agent, preparation and use method
  • Application of Pseudomonas fluorescens in the control of dicotyledonous weeds and powdery mildew and its bacterial agent, preparation and use method
  • Application of Pseudomonas fluorescens in the control of dicotyledonous weeds and powdery mildew and its bacterial agent, preparation and use method

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Embodiment Construction

[0021] The content of the present invention may be more readily understood by reference to the following detailed description of the preferred embodiments of the invention and the included examples. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. In case of conflict, the definitions in this specification will control. As used herein, the term "prepared from" is synonymous with "comprising". As used herein, the terms "comprising," "including," "having," "containing," or any other variation thereof, are intended to cover non-exclusive inclusion. For example, a composition, step, method, article or device comprising the listed elements is not necessarily limited to those elements, but may include other elements not expressly listed or inherent to such composition, step, method, article or device elements.

[0022] The conjunction "consistin...

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Abstract

The invention discloses an application of pseudomonas fluorescens in prevention and removal of dicotyledonous weeds and powdery mildew, wherein the Latin name of the pseudomonas fluorescens is Pseudomonas fluorescens, the strain number of the pseudomonas fluorescens is CZ, and the preservation number of the pseudomonas fluorescens in the China General Microbiological Culture Collection Center is CGMCC No: 4118. According to the invention, the bacterial fermentation supernatant and the ethyl acetate crude extract of the pseudomonas fluorescens have an inhibition effect on seed germination and seedling stem and leaf growth of dicotyledonous weeds, and have a prevention and treatment effect on tobacco powdery mildew; the bacterial agent prepared from a CZ strain can effectively inhibit seed germination and seedling growth of dicotyledonous weeds and prevent and treat powdery mildew; and compared with a traditional pesticide, the bacterial agent of the invention has the advantages that thecontrol effect on dicotyledonous weeds, especially amaranthus retroflexus, can reach 90% or above, the control effect on tobacco powdery mildew can reach 86% or above, and the bacterial agent is lowin use cost, environmentally-friendly and safe.

Description

technical field [0001] The invention relates to the field of microbial pesticides, in particular to the application of Pseudomonas fluorescens in the prevention and control of dicotyledonous weeds and powdery mildew and a fungicide, preparation and use methods thereof. Background technique [0002] Common weeds in tobacco fields include: Amaranth, Purslane, Pennisetum, Barnyardgrass, Crabgrass, Wildflower Rye, etc. Weeds can compete with tobacco for living space and affect the growth and development of tobacco plants, especially after slow seedling. It is common for weeds such as Amaranth, purslane, Pennisetum and crabgrass to be higher than tobacco seedlings. In addition, powdery mildew caused by Erysiphe cichoracearum DC infection is a major foliar disease. Tobacco powdery mildew occurs in major tobacco areas in my country, and outbreaks occur in the warm and humid southern and southwestern tobacco areas, such as Yunnan, Hubei, Fujian, Guangdong, Guangxi, Guizhou and Chon...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N63/27A01P3/00A01P13/02C12N1/20C12R1/39
CPCC12N1/20
Inventor 申莉莉王杰杨金广李莹曲潇玲王凤龙
Owner TOBACCO RES INST CHIN AGRI SCI ACAD
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