Regreening of Valencia Orange as Influenced by Potassium Gibberellate.

In Southern California the Valencia orange (Citruis sinensis, L.) attains maximum orange rind color during winter and regreens s-omewhat by harvest time the following summer. The degree of regreening has been correlated with temperature patterns and with nitrogen nutrition (2, 5). It has also been reported (3) that applications of potassium gibberellate (KGA) to Valencia trees were associated with enhanced regreening of the fruit. The objective of this investigation was to obtain additional information about the influence of KGA on regreening of the Valencia orange fruit.