Are Citrus Going the Way of the Dodo?

If you enjoy a refreshing glass of orange juice with your breakfast, you might take a few minutes to read this post.

Laidback Gardener

20170106A.jpgWorld citrus production is under serious threat by a disease, citrus greening, also known as huánglóngbìng or HLB (the Chinese name means yellow dragon disease). It’s caused by one of three closely-related bacteria, Candidatus Liberibacter asiaticus, C.L. africanus and C.L. americanus. If not controlled, citrus greening  may well wipe out citrus production on a planetary scale.

It affects not only orange trees, but all citrus, including lemons, grapefruits and clementines, just to mention the best known. In fact, other plants of the citrus family, the Rutaceae, can also be infected and may even serve as a secondary host for the disease.

Bacteria Need a Vector

20170106B.jpg Adult citrus psyllid (Diaphrina citri).

Bacteria can’t spread from plant to plant on their own, however: they need a vector. In the case of citrus greening, it’s a small jumping insect called the citrus psyllid. There are two species:…

View original post 1,047 more words



Strafford County Master Gardeners Association, part of the University of New Hampshire Cooperative Extension, is fifty+ gardeners strong, educating through gardening in Strafford County New Hampshire.
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