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How much scarification from summer logging


, : How much scarification from summer logging. Forest Res Notes 110: 1-3

Mineral soil provides optimum conditions for the establishment of birches: it provides a stable moisture supply and allows the rootlets to penetrate to this moisture source immediately. Other types of seedbed sometimes act as a physical barrier and are subject to higher temperatures and to rapid drying. In spite of this, some birch will germinate and survive on humus and even on natural seedbeds. If moisture, light, and other factors are right, enough may survive to produce a well-stocked stand. But these conditions seldom occur, and additional scarification to provide a greater exposure of mineral soil usually will increase the amount of birch. If regeneration of birch is the management objective, a special effort should be made to scarify . a larger proportion of cutting areas than the scant 1/3 found to have been scarified on the surveyed patches.

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