An aphid transmitted virus that causes quick decline in citrus trees grafted onto sour orange rootstock, and stem pitting that reduces yield and fruit quality on other rootstocks. Epidemics in South America in the mid twentieth century killed tens of millions of citrus trees, and it remains one of the most economically significant citrus pathogens worldwide, driving the near universal switch away from sour orange rootstock in commercial groves.
Facts
Control Method Control Method Control Method Classification
Quarantine StatusQuarantine Pest (ISPM 5) 2 Connections
Affects
Orange, Crops Source Citrus Tristeza Virus (Wikipedia)
Associated With
Orange, Crops Citrus tristeza virus has destroyed tens of millions of orange and other citrus trees globally.
Caused By Agent Kind
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Found In
Also in Geography Atlas: where this subject is found.
Source Citrus Tristeza Virus (Wikipedia)Article textQuote, Article text
It has killed more than 80 million trees worldwide, mainly in South Africa since 1910, Argentina (10 million) and Brazil (6 million) since 1970, and the U.S.
Also in Geography Atlas: where this subject is found.
Source Citrus Tristeza Virus (Wikipedia)Article textQuote, Article text
It has killed more than 80 million trees worldwide, mainly in South Africa since 1910, Argentina (10 million) and Brazil (6 million) since 1970, and the U.S.
Also in Geography Atlas: where this subject is found.
Source Citrus Tristeza Virus (Wikipedia)Article textQuote, Article text
It has killed more than 80 million trees worldwide, mainly in South Africa since 1910, Argentina (10 million) and Brazil (6 million) since 1970, and the U.S.
Sources
1. Citrus Tristeza Virus (Wikipedia)
Wikimedia FoundationOpening definition paragraph
Citrus tristeza virus (CTV) is a viral species of the genus Closterovirus that causes the most economically damaging disease to its namesake plant genus, Citrus. The disease has led to the death of millions of Citrus trees all over the world and has rendered millions of others useless for production. Farmers in Brazil and other South American countries gave it the name "tristeza", meaning sadness in Portuguese and Spanish, referring to the devastation produced by the disease in the 1930s.
lead description
An aphid transmitted virus that causes quick decline in citrus trees grafted onto sour orange rootstock, and stem pitting that reduces yield and fruit quality on other rootstocks.
Article text
If there is any CTV in the area, avoid grafting trees on sour orange rootstock and instead graft on tristeza-tolerant rootstock.
Article text, control method
A biological approach has been to bring in a parasitoid wasp from Asia that naturally controls A. spiraecola.
Article text, control method (2)
It is necessary to spray nursery plants and young trees with insecticide occasionally, to control aphids.
In Group: Phloem-Limited Aphid-Borne Plant Viruses, Wikipedia article lead
The virus is transmitted most efficiently by the brown citrus aphid
View the Source 2. EPPO A2 List of pests recommended for regulation as quarantine pests
A2 List, Viruses and virus-like organismsQuote, A2 List, Viruses and virus-like organisms
Citrus tristeza virus (Closterovirus tristezae)
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