Analysis of J.D. Irving Limited plantations at Black Brook in northwestern New Brunswick
University of New Brunswick
This thesis discusses the present reforestation program being carried out in the Black Brook district. of northwestern New Brunswick by J.D. Irving Limited. Planting of cut-over areas was initiated in 1951 and presently more than 25 million trees have been planted on about 25 thousand acres; black, red, and white spruce were the major species planted. Estimated costs of plantation establishment include $60 / acre for planting $17/acre- for site preparation and $7/acre for herbicide application. Average survival rat.es of 87%, five years following planting have been obtained, as well as an average growth in height of 14 inches during the seventh growing season following planting. Company predictions call for a yield of 6.0 cords per acre at the end of a short 35 year rotation. However, yields of from 30-40 cords per acre would appear to be more reasonable under present harvesting methods.