Tristeza disease complex
Citrus trees infected with tristeza show light green foliage, poor growth flushes, and some leaf drop.
The trees may produce a heavy crop of small fruit because girdling at the bud union prevents starch transport
to the roots. Diseased young trees bloom early and abundantly and begin producing fruit 1 to 2 years
before healthy ones do.
Management of the tristeza complex depends largely on preventative measures, such as using tolerant
rootstocks and tristeza-free propagation material. Disease spread cannot be prevented completely.
tree affected by the Tristeza virus