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Application of pseudomonas fluorescens in prevention and removal of dicotyledonous weeds and powdery mildew, and bacterial agent, preparation method and use method of pseudomonas fluorescens

A technology of Pseudomonas fluorescens and dicotyledons, 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: 2020-05-22
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 inventors have found for the first time that the fermentation supernatant and ethyl acetate crude extract of the CZ bacterial strain have inhibitory effects on tobacco powdery mildew bacteria and tobacco field weeds; Anti-activity has not been reported

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  • Application of pseudomonas fluorescens in prevention and removal of dicotyledonous weeds and powdery mildew, and bacterial agent, preparation method and use method of pseudomonas fluorescens
  • Application of pseudomonas fluorescens in prevention and removal of dicotyledonous weeds and powdery mildew, and bacterial agent, preparation method and use method of pseudomonas fluorescens
  • Application of pseudomonas fluorescens in prevention and removal of dicotyledonous weeds and powdery mildew, and bacterial agent, preparation method and use method of pseudomonas fluorescens

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[0021] The invention can be more readily understood by reference to the following detailed description of the preferred practice of the invention and the included examples. Unless defined otherwise, 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 shall prevail. As used herein, the term "prepared from" is synonymous with "comprising". As used herein, the terms "comprises," "including," "has," "containing," or any other variation thereof, are intended to cover a non-exclusive inclusion. For example, a composition, step, method, article, or device comprising listed elements is not necessarily limited to those elements, but may include other elements not explicitly listed or inherent to such composition, step, method, article, or device. elements.

[0022] The conjunction "consisting of" excludes any unspecif...

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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 control of dicotyledonous weeds and powdery mildew and its bacterial agent, preparation and use methods. Background technique [0002] Common weeds in tobacco fields include: retroverted amaranthus, 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 seedlings. From the group tree period to the prosperous period, it is common that weeds such as retroverted amaranthus, purslane, pennisetum and crabgrass are higher than the tobacco seedlings. In addition, powdery mildew caused by infestation by Erysiphecichoracearum DC is a major foliar disease. Tobacco powdery mildew occurs in the main smoking areas in my country, and outbreaks occur in warm and humid southern and southwest China, such ...

Claims

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Application Information

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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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