SEASONAL VARIATION IN CAMBIAL ELECTRICAL RESISTANCE AND ITS RELATION TO GROWTH IN TWO CULTIVARS OF PEACH
Seasonal trends in cambial electrical resistance (CER) of Loring and Redhaven peach trees (Prunus persica (L.) Batsch) were monitored with the use of a Shigometer. Three readings were taken on the main trunk of each tree periodically from early June 1981 through early December 1982. Individual records were maintained for each tree. One increment core was also taken from the trunk of each tree in late November 1982. The data suggested a relationship between CER and the onset of dormancy and a multiple regression analysis demonstrated a significant correlation between CER and growth, cultivar, and a growth-cultivar interaction (R2 = 0.61).Key words: Prunus persica, dormancy, growth, electrical resistance, peach