Experiment Station Record, Volume 92, January-June, 1945 Page: 59
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1945 FORESTRY 59
Influence of aspen, young lodgepole pine and open grassland types upon
factors affecting water yield, E. G. DUNFORD and C. H. NIEDERHOF. (U. S. D. A.
coop. Colo. State Col.). (Jour. Forestry, 42 (1944), No. 9, pp. 673-677, illus. 2).Conducted
in 1942 and 1943 on the Fraser National Forest in north-central Colorado,
this study indicated that from the standpoint of water available for streamflow,
aspen and grass are probably superior to a dense coniferous forest. As compared
with a dense stand of young pine, the aspen and open grassland types intercepted
smaller amounts of precipitation. Erosion was no problem in any of the three types
provided they received proper protection from misuse. Where water yield is the
primary consideration, conversion to a coniferous forest by costly reforestation
methods is scarcely justified.
Slash pine produces viable seed north of its natural range, D. B. ROSENKRANS.
(Clemson Agr. Col.). (Jour. Forestry, 42 (1944), No. 9, p. 685).-In 1925 some
580 slash pine seedlings were planted at Clemson College, S. C. In 1942 a few small
but mature seed-producing cones' were collected, but yielded no viable seed. Collections
in 1943 yielded some seed of fairly good germination. Thus slash pines
growing 140 miles north of the natural range of the species were capable of reproduction.
Immersing seeds of species of Robinia in boiling water hastens germination,
J . WILSON. (Cornell Univ.). (Jour. Forestry, 42 (1944), No. 6, pp. 453454).-Seeds
of the rose acacia (Robinia hispida) and of the clammy locust
(R. viscosa) were submerged in boiling water for different periods. In the case of
the rose acacia, immersion for 1 min. increased germination after 7 days from 0 to 80
percent. Immersion for 5 min. did not injure the seed. Favorable results were
obtained also with the clammy locust seeds immersed in hot water for 1 min.
Two factors affecting rooting of red maple cuttings, L. J. EDGERTON. (U. S.
D. A.). (Jour. Forestry, 42 (1944), No. 9, pp. 678-679).-Greenwood cuttings
taken from the lower half of the crown of young red maple trees, 10-20 ft. in height,
rooted more readily than those from the upper half. The fact that cuttings from
light fruiting female trees gave as high a rooting percentage as those from male
trees indicated the absence of any genetic relationship to rooting capacity.
Dunkeld larch in Ohio, R. R. PATON (Jour. Forestry, 42 (1944), No. 6, pp.
452-453).-Two stocks of the Dunkeld larch designated as Glamis and Atholl were
sown at Wooster, Ohio, in the spring of 1931. The germination and growth of
the Glamis larch was better from the start, and measurements on established plantings
showed this difference to be maintained for several years. The Dunkeld larch
made better growth than either of its parents, namely, the Japanese and European
larches, planted nearby. However, this superiority was not enough to suggest that
the Dunkeld larch will become an important factor in Ohio.
Effect of fertilizer on planted black locust, D. DENUYL. (Ind. Expt. Sta.).
(Jour. Forestry, 42 (1944), No. 6, pp. 450-451).-Seedlings planted in the compact
subsoil left after erosion on a typical Bedford silt loam were supplied with a 2-12-6
fertilizer placed in the holes at time of planting. Survival was excellent in all
treatments, which consisted of 0.5, 1.0, and 2.0 tablespoonfuls of fertilizer per tree.
In the first season the fertilized trees had larger leaves, better color, and made better
growth. Measurements in 1942 on trees planted in 1939 showed average heights
of 15 and 10 ft. for the fertilized and unfertilized trees, respectively. Diameter
growth was also notably increased by fertilization.
Ecotypic differentiation in red ash, J. W. WRIGHT (Jour. Forestry, 42 (1944),
No. 8, pp. 591-597).-In this second paper (see above) further information is presented
on the variations in ash seedlings grown in Massachusetts from seeds received
from various localities in the eastern United States and Canada. The more rapid
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U.S. Department of Agriculture. Agricultural Research Administration. Office of Experiment Stations. Experiment Station Record, Volume 92, January-June, 1945, book, 1947; Washington D.C.. (digital.library.unt.edu/ark:/67531/metadc5064/m1/72/: accessed November 24, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.