alternate bearing

Symptoms

Very heavy crop one year followed by almost no flowers/fruit the next, otherwise healthy tree, pattern recurs on the same biennial cycle.

Plants affected

• pistachio

Common questions

How do I recognise alternate bearing on pistachio?

Very heavy crop one year followed by almost no flowers/fruit the next, otherwise healthy tree, pattern recurs on the same biennial cycle.

Do I have to report alternate bearing?

No. alternate bearing is not a notifiable organism, so there is nothing to report to an authority. Treat it as a normal garden problem.

How is alternate bearing treated?

With a sequence of steps whose timing matters as much as the choice of product — and both depend on the plant, the season and your country. Dr. Phyto works them out in a free diagnosis.