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: Wed 29 Apr 2020

Source: FreshPlaza, Vegetable Patch report [edited] <https://www.freshplaza.com/article/9212319/chinese-tomato-production-declined-because-of-plant-disease/>

Tomato production areas are widely distributed across China. According to some farmers, the production volume in Inner Mongolia declined by 40%-50%, while the production volume in Shandong decreased by 30%. The main reason for this is plant disease.

The new tomato plants are promising. The price is expected to stabilize and would not have been this high if it was not for widespread plant disease.

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Communicated by: ProMED-mail <promed@promedmail.org>

[A number of tomato diseases and pathogens have been reported from the region, many of which can also affect potatoes and other solanaceous crops. For example, _Tomato brown rugose fruit virus_ has recently been reported for the 1st time from China in Shandong province (ProMED-mail post http://promedmail.org/post/20190903.6654138); and a severe strain of late blight (_Phytophthora infestans_ strain A2-Blue 13) is spreading in the region (ProMED-mail post http://promedmail.org/post/20180418.5755980).

Reliable molecular diagnosis of the pathogen(s) involved will be needed in order to be able to design suitable management strategies for the reported problems. Without phytosanitation or other forms of disease management, there is a high likelihood for most pathogens to get carried over to a new crop. Thus, the statement above that plants for the next crop look 'promising' does not provide a guarantee for a healthy crop in the following season.

Maps

China:

<http://www.beijing-travels.com/image/chinamap.jpg> and <http://healthmap.org/promed/p/155>

China provinces:

<http://www.chinadiscovery.com/assets/images/customer-support/maps/china-provinces-map-600.jpg>

Pictures

Symptoms of some tomato diseases via:

<http://www.ipmimages.org/browse/AreaSubs.cfm?area=63>

Links

List of major diseases and pathogens of tomato:

<https://www.apsnet.org/edcenter/resources/commonnames/Pages/Tomato.aspx>

Fact sheets of some major tomato diseases via:

<http://vegetablemdonline.ppath.cornell.edu/factsheets/Tomato_List.htm>

- Mod.DHA]

[See Also:

Tomato mottle mosaic virus, capsicum seed - Australia: interception

http://promedmail.org/post/20200210.6976116

2019

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Tomato brown rugose fruit virus - China: 1st rep (SD)

http://promedmail.org/post/20190903.6654138

Southern tomato virus - UK (02): symptomatology, comment

http://promedmail.org/post/20190616.6522021

2018

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Undiagnosed leaf curl virus, tomato seed - Egypt

http://promedmail.org/post/20181012.6086559

Late blight, potato - India: strain Blue 13

http://promedmail.org/post/20180418.5755980

2017

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Potato rot nematode - China: (NM)

http://promedmail.org/post/20171207.5490078

2013

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Tomato chlorosis virus - China: 1st rep (BJ)

http://promedmail.org/post/20130916.1946775

Late blight, potato: new strains threat

http://promedmail.org/post/20130111.1492024

2008

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Powdery mildew, tomato - China: 1st rep.

http://promedmail.org/post/20080918.2926

Late blight type A2, tomato - Taiwan: 1st report

http://promedmail.org/post/20080615.1891

Tomato zonate spot virus - China: (YU), new tospovirus

http://promedmail.org/post/20080611.1843

and additional items on tomato diseases in the archives]

Website: http://www.isid.org

Published: May 1, 2020