Growth Response of Dwarf Lablab Bean (Lablab purpureus (L.) Sweet) to Sowing Date and Photoperiod

Abstract

Effects of sowing dates and photoperiod on the growth habit in stem determinate type dwarf lablab bean (Lablab purpureus) were investigated. 1. The plants in the greenhouse showed an indeterminate growth habit when the seeds were sown during June and August, but determinate when sown in any other months of the year. 2. A photoperiod longer than 13 hr caused an indeterminate growth habit. It is suggested that the determinate growth habit of a plant is controlled by photoperiod, temperature or a combination of both.