Propagation

Seeds (fallen fruits) should be collected from vigorously growing middle-aged trees characterized by straight boles, desirable branching habit, good form and less fluting. Freshly fallen intact fruits with inflated calyx from such trees can be collected during December-February. The ground must be cleared before hand by removing litter and other materials to facilitate seed collection. After cleaning and drying the seeds may be safely stored in gunny bags or sealed containers. Seeds of diameter greater than 9 mm are usually collected. For convenience in storage and transport, the bladder like calyx of the fruit is removed. This is done by half-filling a bag with the fruits and vigorously rubbing and shaking it or by beating with sticks, after which the remains of the calyces are separated from the nuts by winnowing. Due to hard seed coat, germination of one-year old seeds is better than that of fresh seeds.