. Alaska forest research : problems and present status : annual report, 1955. Forests and forestry Alaska. Fig. 7 SOIL SURFACE TEMPERATURES MAYBESO CUTOVER AREA (6 day means ) MO. JUNE JULY AUGUST SEPT. Minima of 32° on both moss and mineral soil surfaces resiilt when air minima at 3 feet drop to about 36°. Freezing temperatures occurred as late as July on the tmdistiirbed surface but never dropped below 26°» The superiority of the m±x:ed seedbed, when canpared with the undisturbed moss-covered seedbed, is shown by these facts: 1. More seed germinated, 2. The germination period was shorter sin
. Alaska forest research : problems and present status : annual report, 1955. Forests and forestry Alaska. Fig. 7 SOIL SURFACE TEMPERATURES MAYBESO CUTOVER AREA (6 day means ) MO. JUNE JULY AUGUST SEPT. Minima of 32° on both moss and mineral soil surfaces resiilt when air minima at 3 feet drop to about 36°. Freezing temperatures occurred as late as July on the tmdistiirbed surface but never dropped below 26°» The superiority of the m±x:ed seedbed, when canpared with the undisturbed moss-covered seedbed, is shown by these facts: 1. More seed germinated, 2. The germination period was shorter sind earlier. 3. Survival of the seedlings was better. Direct damage to seedlings because of excessive heat or freezing temperatures did not occur during the period of observation. Extreme temperatures severe enoiigh to cause immediate damage to seedlings appear to be of little or no significance in this region. 22 -. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Alaska Forest Research Center (U. S. ). Juneau : Alaska Forest Research Center, U. S. Dept. of Agriculture, Forest Service
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