Sal seeds generally mature between the months of April and May. It may vary according to location. The seeds fall as soon as they mature. The germination of seed starts soon after maturity and it may germinate even on the tree (Troup 1921). When germination starts, the tip (apex) of the fruits splits longitudinally (at right angle to the pedicel of the seed) and the radicle emerges from the apex of the seed.

Germination percentage is influenced by various factors. Cockburn and Wong (1969) stated that germination percentage of Sal depended on the size of seed trees and collection of seeds from the tree rather than from ground. Troup (1921) reported that sound fresh seed had a high germinative capacity. Sal seed, however, rapidly loses its viability. Depth of sowing is also an important factor in germination. Cayford and Waldron (1969) found that germination depended on sowing methods and depth of sowing. Defective sowing of Sal seed in nursery in Indiahad led to low germination percentage (Singh et al. 1975). The present investigation was, thus, undertaken to determine the effect of sowing orientation of seed on germination.