INCREASING FORAGE YIELDS ON INTERMOUNTAIN WINTER RANGES 5) 
© z 1 2 3 
SCALE IN MILES 
LEGEND 
m= EXPERIMENTAL RANGE BOUNDARY 
—-—=— ALLOTMENT BOUNDARY 
—--— UNIT BOUNDARY We 
——— IMPROVED ROAD d 
===== UNIMPROVED ROAD 
— RESERVOIR 
RAZ RIDGE 
NO. 1 
MIOWINTER 
an = 
~-s 
‘i 
* UNIT NO. 2 
EARLY WINTER OR LATE 
WINTER IN ALTERNATE YEARS 
Y 
UNIT/NO.2 
Sa . 7 
Besar ll 
N) MIOWINTER OR LATE WINTER 
( IN ALTERNATE YEARS 
OVER FLOW / UNIT IN ( 
0.1 
VARIABLE GRAZING Y EARLY WINTER EVERY OTHER \\ 
|) 
Cw, cee 
RANGE i y piece 
PASTURES ee (— 
MIDWINTER OR LATE WINTER 
IN ALTERNATE YEARS 
UNIT NO. 2 
EARLY WINTER (t 
Y UNIT NO|2 <-> 
MIDWINTER ak x 
eee sees (e 
ALLOTMENT NO. 4 
| UNIT. NO./1 | UNIT] NO. 1 
RLY WINTEROR MIDWINTER | 
x 
a - 
H | ( ) i == MIDWINTER Si {| 
(IN ALTERNATE YEARS | ( ) a) UNGRAZED i \. \ 
ae > i ) he EXERIMENTAL 0 SH 
4 ‘ (y s RANGE SN Il 
( )/ ( HEADQUARTERS | 
4 Sy | 
FicurE 3.—Location of range pastures and allotments at the Desert Experimental 
Range. All allotments were grazed at moderate intensity. 
grazing period and at the end of the winter grazing season. The grazing 
intensities and the method of stocking the pastures are described in 
more detail in the section, Influence of Grazing Intensity, page 18. 
Data on herbage yields, plant density, and forage utilization were 
recorded each year. Plant density and herbage production estimates 
were made on a series of circular 200-square-foot plots established within 
each pasture—64 in the large pastures and 48 in the small pastures. 
Plant density, estimated by the square-foot-density method (20) in 
October or early November, was recorded each year from 1935 to 1945 
and in 1947. Herbage yields were determined by the weight-estimate 
