Table 1. Estimates for numbers of days for wound responses of peach bark to occur following hypothetical injuries made in March, April, May, and June in Vineland, Ontario.^{^z}

Injury date	Number of days
Injury date	Lignin formation	Suberin formation
March 15	49	62
March 31	36	49
April 15	27	39
April 30	22	32
May 1 5	18	27
May 31	15	23
June 15	13	21

↵z Based on averaged annual degree-day accumulations (base = O C) in Vineland Station, Ontario, from 1935-1985. Estimated accumulated degree-days required for complete lignification and complete suberization are 256 and 411, respectively.