A ProMED-mail post <http://www.promedmail.org>
ProMED-mail is a program of the International Society for Infectious Diseases <http://www.isid.org>
Date: Mon 29 May 2017
Source: FreshPlaza, El Diario report [in Spanish, trans. Corr.SB, summ. Mod.DHA, edited] <http://www.freshplaza.es/article/107248/Ecuador-La-virosis-da%C3%B1a-los-cultivos-de-mel%C3%B3n>
A farmer [in a parish in Manabí province] reports that 40 per cent of his melons were damaged by a disease that appeared recently. It affects 3 out of 4 fruits on a plant, causing spots followed by rot.
The Ministry of Agriculture said they are aware of the disease. It was noticed a few years ago and is thought to be connected with climate change and the crop cultivars planted. In 2017, it is more severe than before and is expected to affect yield and quality of short-lived crops like melon, watermelon, and papaya. The higher incidence is attributed to high humidity and increased insect activity. Farmers are also blamed for incorrect use of agrochemicals. and not practicing crop rotation.
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Communicated by: ProMED-mail <promed@promedmail.org>
[A number of diseases have been reported on both melons and papaya in the region. While there are some fungal and bacterial pathogens that have a wide host range, more than one crop disease may be affecting the area. An increased insect activity, as mentioned above, is known to favour the spread of multiple plant pathogens, either as specific vectors or unspecifically through mechanical injuries inflicted on the plants. Separate and reliable diagnosis of any pathogens affecting the different hosts will be essential for disease management.
Maps
Ecuador:
<http://www.latinamericanstudies.org/ecuador/ecuador-map.jpg> and <http://healthmap.org/promed/p/60906>
Ecuador provinces:
<http://www.mapsofworld.com/ecuador/ecuador-political-map.html>
South America, overview:
<http://ontheworldmap.com/south-america/political-map-of-south-america.jpg>
Pictures
Photos of some papaya diseases via:
<http://www.forestryimages.org/search/action.cfm?q=papaya%20disease>
Symptoms of some watermelon diseases via:
<http://www.ipmimages.org/browse/Areathumb.cfm?area=90>
Links
List of major diseases and pathogens of cucurbits, including melons:
<http://www.apsnet.org/publications/commonnames/Pages/Curcubits.aspx>
List of major diseases and pathogens of papaya:
<http://www.apsnet.org/publications/commonnames/Pages/Papaya.aspx>
- Mod.DHA]
[See Also:
2016
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Undiagnosed diseases, papaya & citrus - Bolivia: (LP)
http://promedmail.org/post/20160725.4367254
2014
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Fruit viruses - Ecuador http://promedmail.org/post/20140709.2596994
2013
---
Papaya ringspot & mosaic viruses - Mexico
http://promedmail.org/post/20131230.2142472
Papaya ringspot virus - Peru: (UC)
http://promedmail.org/post/20130830.1912651
Emerging crop diseases - Bolivia
http://promedmail.org/post/20130504.1690667
2004
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Fusarium oxysporum, melon - Mexico (Colima)
http://promedmail.org/post/20041220.3357
Powdery mildew, race 2, melon - Brazil (SP)
http://promedmail.org/post/20041128.3179
and additional items on diseases of the respective crops in the archives]
Topics
Species
