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Widely Prevalent Plant Pathogen Status – This map is based on data from the Widely Prevalent Fungi Project, a collabaration between USDA APHIS PPQ and . Twenty seven (27) isolates of Alternaria porri were isolated from diseased leaf samples collected from different onion growing regions of Bangladesh and. PDF | Effect of different culture media, pH levels and natural substrates on mycelial growth and sporulation of Alternaria porri and Stemphylium.

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The pathogen may also be seed-borne. Undercut onion roots and harvest at full maturity when intact necks top over naturally, ideally during dry weather. Matches exactly Value is undefined. If you would like to know more about cookies and how they work, please visit www.

More Spanish version Dr. Sanctioned by Sanctioning name Validated by Type specimen or ex type More specimens Human pathogenicity code Plant pathogenicity code Code toxicity. Alternaria porri From Bugwoodwiki. Google Wikimedia Wikipedia Wikispecies. Wlternaria browsers are initially set up to accept cookies, since this is required by most website owners in order to access their sites.

Alternaria porri – Bugwoodwiki

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It can infect all above-ground parts of the plant in addition to the bulb.

Copper fungicides are registered for control of purple blotch, but are not highly effective. For practical reasons we have decided not to translate all pages in several languages anymore because it was too heavy to maintain but some of the labels of the basic and advanced query pages are still available.

Bulbs can be infected at harvest if the pathogen enters neck wounds. No other cookies than the ones mentioned above are used on our websites. Apply adequate but not excessive nitrogen fertilizer before bulb initiation.

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These blotches may enlarge up to four inches long and become covered with black fruiting bodies spores. Discussion View source History. Avoid dense plantings of late maturing varieties. Pairwise sequence alignments Polyphasic identifications.

Alternaria porri

Simple search Basic search Advanced search Search type specimens Search thesaurus Search bibliography. Privacy policy About Bugwoodwiki Disclaimers. Specimens and strains links: This page was last modified It is replaced each time there is a query done. Cookies are small text files that contain a string of characters and uniquely identifies a browser.


Run Zhang 1 and Dr. Contact our curators Dr. We use cookies in a very limited number of scenarios that are all present to help the users to have an easier experience. For more information, see the main Onion ipmPIPE website or the other resources provided in this wiki. Current name Classification Type name Basionym Obligate or homotypic synonyms Anamorph synonyms Teleomorph synonyms Facultative or heterotypic synonyms Type of organism.

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This Add-on is available at http: Reduce over- wintering and survival of the pathogens by eliminating culls, onion porrk, and volunteers. Lily Eurwilaichitr and Dr.

They are sent to a computer by website operators or third parties. Concentric light and dark zones later appear over part or all of the purple area. Macrosporium porri Ellis, Grevillea 8 Alternaria porri Ellis Cif.

Phytopathological survey of Santo Domingo, Pairwise identification Polyphasic identification. Older leaves and plants are more susceptible to infection.