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Scouting Citrus for Pests - Page 20
Growers were at first shocked at the sight of decimated young foliage and concerned with the prospect of expensive controls. Fortunately, initial fears for the spring flush were replaced with relief when it was realized that too few leafminers survived winter to serious damage the flood of new leaves. However, attacks on successive flushes can be significant, so young trees are more susceptible to damage. Our research in 1995-96 showed that trees could be profitably protected up through the 4th year, but that subsequently, there was no measurable yield response to leafminer control.
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