Thinnings in the Singhbhum Forests

Abstract

Thinnings were introduced in the year 1936 in these 800 square miles of forest both in the young ten-year-old. P.B.I. and VI crops, and in the older uneven-aged selection forests of the other periodic blocks. In the young crops thinnings are mechanical with the aid of a thinning stick, the aim being to thin the crops to an average spacing, the multiple of which will give the ideal ultimate spacing of the crop at the final felling. Uneven-aged crops are given "C" grade thinninga with a formula showing the relationship between diameter of stems and their spadng, as guide (18 times)."C" grade thinnings are favoured as against crown thinnings as being simpler to execute and to inspect. Fire hazard and measures of protection are discussed.