Two photos of damaged flowers on 'Pawnee' and 'Kanza' after a spring freeze.

Oklahoma’s 2021 spring freeze impact on pecan flowers

For many pecan growers in Oklahoma, the late spring freeze in 2021 was a nightmare. The hourly temperature ranged from 29-32 degrees Fahrenheit over six hours at the experimental orchard in Perkins, Oklahoma; the damage to pecan flowers was devastating (Fig. 1). Do cultivars react differently when exposed to spring freeze? Pecans exhibit heterodichogamy, meaning...

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