An Underplanting experiment with White Pine and White Spruce Seedling and Transplant Stock

Experimental underplanting of 2-0, 3-0 and 2-2 white pine and white spruce stock was carried out on scarified strips in two low-grade hardwood stands in central Ontario to find the relative suitability for stand conversion. Three-year results show that site preparation is a key to successful survival and height growth. Comparisons of costs per "surviving inch of height growth" indicate that 3-0 stock is superior to the 2-2 and 2-0, that white pine is somewhat better than white spruce, and that the survival and, growth were better beneath the tolerant than beneath the intolerant hardwoods.