Cumulative fruit drop rate increased with fruit development
(Fig. 4). In the on-season longan, an intensive fruit drop occurred in
the early period of fruit development, within 20 days after anthesis
(400
D), and the increase in fruit drop rate was slow thereafter.
Changes in cumulative fruit drop in the off-season longan followed
a double sigmoid pattern with an intensive early fruit drop period
before 62 days after anthesis (458
◦
◦
◦
D) and a later one between 89