. Report upon the forestry investigations of the U. S. Department of agriculture. 1877-1898. Forests and forestry. REPRODUCING THE WOOD LOT. 289 if the first strip failed to cover itself satisfactorily the operation is stopped, for it would be unwise to remove the seed trees further by an additional clearing. Accordingly, this method should be used only where the kinds composing the mother crop are frequent and abundant seeders and give assurance of reseeding the strips quickly and successfully. The other two methods have greater chances of success in that they preserve the soil conditions mor
. Report upon the forestry investigations of the U. S. Department of agriculture. 1877-1898. Forests and forestry. REPRODUCING THE WOOD LOT. 289 if the first strip failed to cover itself satisfactorily the operation is stopped, for it would be unwise to remove the seed trees further by an additional clearing. Accordingly, this method should be used only where the kinds composing the mother crop are frequent and abundant seeders and give assurance of reseeding the strips quickly and successfully. The other two methods have greater chances of success in that they preserve the soil conditions more surely, and there is more assurance of seeding from the neighboring trees on all sides. The selection method, by which single trees are taken out all over the forest, is the same as has been practiced by the farmer and lumberman hitherto, only they have forgotten to look after the young crop. Millions of seed may fall to the ground and germinate, but perish from the excessive shade of the mother trees. If we wish to be successful in establishing a new crop it will be necessary to be ready with the ax all the time and give light as needed by the young crop. The openings madeby taking out single trees are so small that there is great danger of the young crop being lost, or at least impeded in its development, because it is im- practicable to come in time to its relief with the ax. The best method, therefore, in all respects, is the group method, which not only secures continuous soil cover, chances for full seeding, and more satisfactory light condi- tions, but requires less careful at- tention, or at least permits more freedom of movement and adapta- tion to local conditions (fig. 30). It is especially adapted to mixed woods, as it permits securing for each species the most desirable light conditions by making the openings larger or smaller, accord- ing as the species we wish to favor in a particular group demand more or less shade. Further, when dif- ferent species are ripe f
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