U.S. FOREST SERVICE 
RESEARCH NOTE LS-8 
KE STATES FOREST EXPERIMENT STATION *° U.S. DEPARTMENT OF AGRICULTURE 
1962 Forest Tree Seed Crop Averages Fair in the Lake States 
The 1962 forest tree seed crop in general 
was below that of 1960 but otherwise better 
than for any other year since 1955, according 
to observations made at field centers of the 
Lake States Forest Experiment Station (see 
table on reverse side). Although one or more 
species had crop failures in each locality re- 
ported upon, crops for most species were fair 
to good. Compared to 1961, seed production 
was better in every locality but North Dakota. 
On the average, production was best in north- 
ern Minnesota and diminished steadily to the 
east. 
In northern Minnesota quaking aspen and 
northern white-cedar produced bumper crops. 
Most other species had fair to good crops 
except for eastern white pine and yellow birch 
(poor) and red pine, bur oak, and northern 
pin oak (failure). 
Fair to good crops prevailed for most 
species in northeastern Wisconsin, but that 
of white pine was poor and those of red pine, 
white ash, and black ash were failures. 
In central Upper Michigan all species had 
fair to good crops except eastern hemlock, 
sugar maple, yellow birch, and black ash, 
which had crop failures. 
The only conifers to produce fair to good 
crops in Lower Michigan were jack pine, east- 
ern hemlock, and northern white-cedar. Crops 
of all others were poor or failures. Many de- 
ciduous species also had seed crops that failed 
or were poor. Exceptions were the aspens, 
white oak, northern red oak, black oak (in 
the southern half), shagbark hickory, black 
walnut, butternut, and black cherry (most of 
which had good crops) and American elm 
which had a bumper crop in the south half 
of the Peninsula (it was poor in the north 
half). 
In north-central North Dakota all species 
had fair to good seed crops except Siberian 
elm and green ash (poor) and hackberry and 
bur oak (failure). This is the fifth successive 
year that the hackberry seed crop has failed. 
Most tree seed collectors are interested 
chiefly in the pines and spruces. For the pines 
1962 generally was poor to fair. For the 
spruces, it was fair to good except in Lower 
Michigan (poor). Mast production of value 
to some wildlife species was generally fair to 
good, except in some localities of Lower Mich- 
igan where it was poor. 
U. S. DEPT. OF AGRICULTURE 
NATIONAL AGRICLITU2AL UapaRy 
AUG 2 0 1963 
April 1963 
PAUL O.;. RUDOLF 
Research Forester 
(Forest Management) 
C & R-PREP. 
* 
MAINTAINED AT ST. PAUL 1, MINNESOTA, IN COOPERATION WITH THE UNIVERSITY OF MINNESOTA 
