Abstract
The relationships between % leaf N and changes in fruit quality of satsuma mandarin before and after storage were studied. The data for this study were obtained from a differential N fertilization trial for a high density planting of 13-year-old satsuma mandarin trees that began in 1982. TSS (total soluble solids), TSS/TA (total soluble solids-titratable acidity ratio), PP (pulp percentage), and 'L' and 'b' values (indices of a color difference meter) were negatively correlated to % leaf N before and after storage. However 'a' value which negatively correlated with % leaf N before storage was lacking after storage. In contrast, TA positively correlated with % leaf N before and after storage. TSS and TSS/TA increased while TA, PP, and 'L' and 'b' values decreased after storage ; the regression lines among these parameters tend to be parallel.
