Frost at New Forest, Dehra Dun during 1963-64

A study towards establishing the rdationship of frost deposition and the prevailing metrorological phenomena in open and sal cover conditions (2 to 600 cm height) during the cold spell of 1963-64, was made at NoW Forest. In the open it was observed that lower minimum temperatures and vapour pressure followed the frosty nights. Mulches were conducive in inducing frost depcsiticn. No frost deposition occurred under sal cover. Although frost caused damage to the standing vegetation, the established shrubs, poles and trees got reclothed with foliage on the return of favourable weather. As frost occurence is a microclimatic phenomenon, it is suggested that the microclimatic effects produced by the forestry operations in vogue be studied in detail and factual scientific data be collected.