Off colour

摘要

There is no cure for a tree once it becomes infected, The tree will decline in health, producing bitter and misshapen fruit, until it dies. The only good news for Californian growers is that so far greening disease has yet to turn up in their state. But industry experts fear it is only a matter of time before it follows the spread of the psyllid vector. The latest insect outbreaks have occurred despite a major chemical intervention program in southern California and US Government cooperation with Mexico in an attempt to contain the insect.