Pheno-climatography of Spring Peach Bud Development1

Abstract

Abstract A model has been developed that relates the stages of spring bud development of ‘Redhaven’ and ‘Elberta’ peaches ( Primus persica (L.) Batsch) to an accumulation of growing degree hours following rest completion. The accumulation of growing degree hours is based on a lower limit of 4.5°C and an upper limit of 25°.