Abstract
Abstract Sixteen hardwood species were planted in different arrangements in two experiments in a former field with an imperfectly drained silt loam soil in Middlesex County, Ontario. With few exceptions planting arrangement had little effect on 10-year survival and on height and diameter increment. However, overall survival and growth were slightly better in the row planting than in the completely random mixture. Applications of 3.3 kg/ha of active simazine in each of the first 3 years after planting provided adequate weed control. One additional application of 2 kg/ha of active glyphosate in June of the sixth growing season eliminated 80% of the competition, renewed tree vigor, and enabled the trees to close the canopy and thereby provide their own weed control through shading. Recommendations are made for the establishment of mixed hardwood plantations in southern Ontario. North. J. Appl. For. 5:203-207, Sept. 1988.
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