BULLETIN 1175, U. S. DEPARTMENT OE AGRICULTURE. 
For varietal and cultural experiments to be of more than local 
application, it is necessary to describe in detail the physical condi- 
tions which existed at the place where the experiments were con- 
ducted. This description of environing conditions is especially neces- 
sary with the grain sorghums, as they are grown in an area in which 
climatic factors are the determining influence in their production. 
DESCRIPTION OF THE WOODWARD FIELD STATION. 
LOCATION. 
The Woodward Field Station consists of 310 acres of bench land 
1 mile southwest of Woodward. Okla. The elevation is approxi 
mately 1,900 feet above sea level. Woodward is centrally located ir 
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Fl £- ^—Sketch map of western Oklahoma and portions of adjoining States, showing the location of the 
w oodward Field Station and the section to which the results reported in this bulletin are generally 
applicable. b * 
the transition section extending north and south between the high 
plains to the west and the prairies of the central lowlands to the 
east. The location of the station is shown in Figure 1. Figure 2 
presents a general view of the station buildings and part of the plats. 
The station farm slopes to the northeast and is drained in that 
direction to the North Fork of the Canadian River through several 
dry washes or draws. 
SOIL. 
The soil of the station is a light phase of sandy loam, classified as 
Canadian sandy loam. The subsoil consists of sand at a depth of 
2 feet, extending to a depth of 4 to 10 feet, where the original residual 
red material is reached. The surface soil is very porous, and no 
