5. Consider Timely Harvest
The UC Davis Hull-Split Prediction Model can be a useful tool to help predict both hull-split and harvest timing.
Keep in mind, a third-generation NOW flight poses one of the greatest threats to the orchard around harvest time,
so almonds should be harvested as soon as possible. Ideal timing is at 95 to 100 percent hull-split at eye level to
avoid NOW infestations and subsequent aflatoxin contamination. Early-harvested varieties, such as Nonpareil, are
much less likely to attract egg laying once they’re on the ground due to the later harvest varieties remaining in the
trees, where egg laying is preferred.
To learn more about controlling NOW, visit
almonds.com/pests. More details on Strategic
Deficit Irrigation can be found in the Almond
Irrigation Improvement Continuum, at
almonds.com/irrigation.
It is highly recommended that early-harvested varieties,
such as Nonpareil, are shaken before a third-
generation navel orangeworm takes flight.
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