Study of alternate bearing presents recommendations for citrus growers

Alternate bearing (also called biennial or uneven bearing) is the tendency of fruit trees to produce a heavy crop one year (called "on-crop") followed by a light crop or no crop the following "off-crop" year. On-crop trees produce a large number of small fruit of little commercial value, while off-crop trees produce a small number of large fruit -a high proportion of which are culled in packinghouses due to their unattractive, thick rinds. The phenomenon is widespread and can occur in an entire region, in individual trees, part of a tree, or even on one branch.

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