. Bulletin of the Department of Agriculture. Agriculture; Agriculture. 4 BULLETIN i, U. S. DEPARTMENT OF AGRICULTURE. Both extensive and detailed studies have been carried on during the past five years. As a result it is now possible to give some def- inite information concerning (1) where reseeding may profitably be undertaken as shown, for example, by the soil and the character of the native vegetation; (2) what species to use; (3) when to sow; and (4) what soil treatment should be applied under the various conditions. LOCATION AND CHARACTER OF THE REVEGETATION STUDIES. Since the Nation
. Bulletin of the Department of Agriculture. Agriculture; Agriculture. 4 BULLETIN i, U. S. DEPARTMENT OF AGRICULTURE. Both extensive and detailed studies have been carried on during the past five years. As a result it is now possible to give some def- inite information concerning (1) where reseeding may profitably be undertaken as shown, for example, by the soil and the character of the native vegetation; (2) what species to use; (3) when to sow; and (4) what soil treatment should be applied under the various conditions. LOCATION AND CHARACTER OF THE REVEGETATION STUDIES. Since the National Forests extend from the Canadian to the Mexi- can line and embrace all the important gradations of climate, alti- tude, moisture, and soil conditions, the investigations were extended over as wide a territory as possible. The location of the experiments is shown in figure Fig. 1.—Location of the reseeding projects on grazing areas within the National Forests. The star indicates the area where the most intensive study was made. It will be seen that experimental reseeding has been undertaken in 11 States. Eighty-six important grazing forests out of the 163 Na- tional Forests were included in the study, and more than 500 individ- ual experiments were established. To supplement these extensive experiments conducted by local forest officers, a series of detailed studies was carried out by the writer on the Wallowa National Forest, in northeastern Oregon. These intensive studies were begun in 1907, and were made upon small plots of varying local conditions. Special attention was given to determining the exact causes of failure or success of seeding through careful observations of the potent factors (especially the temperature and soil-moisture conditions during the main growing season) likely to influence the Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of thes
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