ABSTRACT,Richardson and Hall, 1973a, p. 63, 1973b, p. 46; Wall, 1977, p. 55). Competition and allelopathic effects of Growth and understory species diversity of black spruce [Picea sheep,laurel have been,attributed to the regeneration mariana (Miller) B.S.P.] planted in central Newfoundland at contigu- ous sites with and without dense cover of sheep laurel (Kalmia angus- failure and poor growth
... [Show full abstract] of conifers (Mallik, 1987, 1990, tifolia L.) were compared. Black spruce stem density aFraser, 1993, p. 166; Inderjit and Mallik, 1996a; Jader-