Change in total sugar content of sap from each OPT section was plotted against days of storage as shown in Fig. 3. Concentrations of the sap sugar in Part A, B and C just after
logging were 108, 85 and 76 mg ml1, respectively. During the storage, the concentration unexpectedly increased sharply to become 148, 185 and 134 mg ml1 for A, B and C, respectively,after 30 days. Beyond 30 days the sugar content decreased