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Biological methods for controlling phytopathogenic fungi

A plant fungus and plant technology, which is used in the field of preventing and controlling phytopathogenic fungi with a long incubation period, the fungus grape powdery mildew, and the pathogenic field of controlling grape powdery mildew

Pending Publication Date: 2021-02-26
拜耳简易股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] However, although the known organism strain Bacillus pumilus QST2808 was prior to infection by Erysiphyllum viticilis—understood to mean before the first visible symptoms were observed in the field, compared to when the infestation was clearly visible on most plants in the field— More effective, but there is no evidence that treatment with this product applied earlier in the infestation process will be as effective

Method used

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  • Biological methods for controlling phytopathogenic fungi
  • Biological methods for controlling phytopathogenic fungi
  • Biological methods for controlling phytopathogenic fungi

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0087] Example 1: Effect of Bacillus pumilus strain QST2808 on grape powdery mildew Vitis vinifera under field conditions

[0088] Field trials were carried out in selected vineyard fields and under conditions of natural infestation by the grape powdery mildew Erysipha vine. The natural occurrence and development of powdery mildew in experimental fields was monitored using a qPCR detection tool specific for Erysiophora vine as described in International PCT Patent Application WO2017 / 009251.

[0089] Bacillus pumilus strain QST2808 is used in its commercial form under the trade name sell.

[0090] The tests were carried out at two different locations in a vineyard planted with two different vine varieties, both equally susceptible to powdery mildew:

[0091] Location 1: Goult, southeastern France. Grape variety: Roussanne.

[0092] Location 2: Cuxac d’Aude, South of France. Grape variety: Chardonnay.

[0093] For testing, the Bacillus pumilus strain QST2808 was used in ...

Embodiment 2

[0123] Example 2: Effects of Biocontrol Agents Containing COS and OGA on Grape Powdery Mildew Vitis vinifera Under Field Conditions

[0124] Under the very same conditions, at the same location and at the same time as the experiment carried out in Example 1, by using another organism containing a mixture of chitosan (COS) and oligogalacturonan (OGA) Control agent treatment The same experiment was repeated instead of treatment with B. pumilus strain QST2808.

[0125] The biological control agent is used in its commercial form under the trade name sell.

[0126] Visually observe symptoms on grape bunches

[0127] Observation for symptoms of grape bunches was carried out on fully developed bunches several weeks after the end of the treatment regimen. These observations were made at two sites.

[0128] The results at the Goult site are in Table 3:

[0129]

[0130] (1) lack of use The first three treatments of

[0131] The results of these observations indicate that...

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Abstract

The present invention relates to methods for controlling phytopathogenic fungi using biological control agents. More specifically, the invention relates to methods for controlling phytopathogenic fungi having a long incubation period. In particular, the methods according to the invention are particularly suited for controlling the causal agent of powdery mildew on grapes, the fungus Erysiphe necator.

Description

[0001] The present invention relates to methods for controlling phytopathogenic fungi using biological control agents. More specifically, the present invention relates to methods for controlling phytopathogenic fungi with long incubation periods. In particular, the method of the present invention is particularly suitable for controlling the fungus Erysiphe necator, the pathogen of grape powdery mildew. Background technique [0002] Several synthetic chemical solutions have been developed and commercialized to combat fungal diseases. However, there is growing consumer demand for foods that are treated with less synthetic chemical products during their production. To meet this need, biological control agents are being developed. [0003] Most biocontrol agents with fungicidal activity are generally recommended to growers for application to crop plants before fungal disease actually occurs - that is, before the grower observes visual symptoms of the disease. [0004] However, ...

Claims

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Application Information

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IPC IPC(8): A01N63/22A01P3/00
CPCA01N25/00A01N63/22G06Q50/02
Inventor P·迪布尔内
Owner 拜耳简易股份有限公司
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