. Bulletin (Pennsylvania Department of Forestry), no. 11. Forests and forestry. 21. s o o c > m y. < o c H H O H H e H C C CI fa or by a combination of the following methods:—(1) Natural, where nature, aided to a limited extent by man, sows seeds and produces sprouts. (2) Artificial, where man sows the seeds or plants the seedlings. The former is usually spoken of as natural regeneration and the latter as artificial regeneration. In both methods nature does most of the work; but man helps nature more in the artificial method than in the natural method. Nature working through many centuri
. Bulletin (Pennsylvania Department of Forestry), no. 11. Forests and forestry. 21. s o o c > m y. < o c H H O H H e H C C CI fa or by a combination of the following methods:—(1) Natural, where nature, aided to a limited extent by man, sows seeds and produces sprouts. (2) Artificial, where man sows the seeds or plants the seedlings. The former is usually spoken of as natural regeneration and the latter as artificial regeneration. In both methods nature does most of the work; but man helps nature more in the artificial method than in the natural method. Nature working through many centuries produced the original forest. We cannot wait for nature to produce another original forest on our forest soils. It will take too long. We may assist nature and attempt even to improve upon its way of doing things; but we must be careful that we do not de- viate too far from its methods for fear of being punished. In the case of artificial regeneration it is necessary to collect seeds from desirable trees. These collected seeds may be sown imme- diately or stored. If stored, they must be protected from such ani- mals as mice, squirrels and birds, and from drought. These seeds may be placed betw'een layers of sand to prevent drying out. Those seeds which are sown immediately may be sown directly upon the area where they are expected to germinate and establish themselves or they may be sown in beds in a nursery where they in time develop into seedlings. Direct sowing may be in the form of broadcasting, where the seeds are scattered rather uniformly over the area, or spot planting, where only isolated or scattered spots, often regularly spaced, are sown with seeds. The nurseries in which the seeds are sown may be permanent and located in the open, or temporary and located in the forest under the shelter of trees. The nursery is divided into a great number of beds which are usually about tw'enty-five feet long and four feet wide. The seeds may be sown in these beds in spring or
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