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Dormant shoot of reproductive growth of peach.
Dormant buds
Bud swell stage of peach bloom.
Delayed dormant
Green tip stage of peach bloom.
First swell

Why Is the Dormant/Delayed-Dormant Season Important in an IPM Program?

Dormancy is generally defined as the period from leaf fall until growth resumes in late winter. Delayed dormancy is the period from the resumption of growth, indicated by the beginning of bud swell until first swell. The dormant season is an excellent time to survey the orchard for weeds and rodents. It is also the time to remove mummy fruit and shoots blighted with brown rot in order to reduce disease inoculum.

Water quality issues. Organophosphate and pyrethroid insecticides applied during the dormant season for peach twig borer control are likely to run off into waterways after winter rains and should be avoided. See specific pest sections in the Apricot Pest Management Guidelines for alternative management strategies.

Statewide IPM Program, Agriculture and Natural Resources, University of California
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Agriculture and Natural Resources, University of California

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