The effect of 19th century stone drains on the growth of Sitka spruce.

Abstract

In Rossmore Forest, Co. Laois, poor tree growth occurred on blanket peat planted in 1952 while there was excellent tree growth on the poorly drained gley soils of the Castle comer Series. Within the poor stand parallel lines of relatively good tree growth occurred above stone drains installed in 1880. As a result of man's influence the depth of peat is considerably reduced in the immediate vicinity of the drains and roots penetrate to the base of the drains. Concentric ochreous mottles (neoferrans) have developed around these root channels. The drains are largely ineffective as a drainage system although the individual drains are still running.