USE OF TENSIOMETERS IN REGULATING WATERING IN FOREST NURSERIES

Abstract

A description is given of 3 types of tensiometers used in measuring soil moisture in forest nurseries. Records are presented showing the performance of 2 of the instruments for a period of 3-4 months in 2 nurseries. Calibration technique is descr. The capillary potential of the soil varies with texture and on addition of organic matter. A discussion is given to show how watering may influence development of nursery stock, especially as regards size, top-root ratio, frost hardiness, and drought resistance.