NORTHERN GREAT PLAINS FIELD STATION IN 1923 13 
HEDGES 
No new species were added to the hedge plantings. All existing 
hedges of various species and varieties came through the winter in 
food condition and made excellent growth during the season. The 
eciduous-tree hedges are becoming dijQGlcult to keep under control. 
It seems that this class of material is not very desirable for ordinary 
work, as the hedges take up too much space for average grounds. 
VARIETAL TESTS OF ORNAMENTAL SHRUBS AND ROSES 
Testing work had been discontinued since 1918, but as it seemed 
desirable to test some semihardy species, giving a little protection in 
the winter, a small beginning was again made m the spring of 1922. 
The species tested included a few hybrid-perpetual and hybrid- 
Kugosa rose varieties, Hydrangea, Philadelphus, Syringa (French 
lilacs), Tamarix, Euonymus, and Sambucus species. The roses were 
covered entirely with soil and mulched, and the other shrubs were 
hilled up a little with soil, then mulched around the base. Some 
winterkilling occurred, but all species were alive in the spring of 
1923 and made a good growth during the season. The roses, espe- 
•cially the Rugosa hybrids, grew almost rampantly and bloomed well 
during the summer and until late in the fall. 
LANDSCAPE WORK 
Very little new landscape work on the grounds was done in 1923. 
One new group of evergreens was planted south of the entrance gate. 
Ground has been broken for several new plantings to be made in the 
future. All existing plantings on the grounds made excellent growth 
during the last few years and especially so during the season of 1923. 
The bedding work again was successful, cannas and geraniums both 
thriving during the hot season. Very little work other than watering 
in the driest part of the summer is needed to keep the beds in good 
condition. 
The lawns received three irrigations during the season and appeared 
greatly benefited. Bluegrass lawn mixtures are not very successful 
here unless some water is applied during the driest period. The 
iDromegrass lawns are improving each year and should be recom- 
mended where watering is not possible. 
AGRONOMIC INVESTIGATIONS 
By J. T. Sarvis, Associate Agronomist, and J. C. Thysell, Assistant Agronomist 
The agronomic investigations include rotation and tillage experi- 
ments w^th the ordinary field crops as conducted by the Office of 
Dry-Land Agriculture Investigations, and variety testing, date of 
seeding, and plant breeding, as conducted by other offices of the 
Bureau of Plant Industry which cooperate at this station. 
The first annual report of this station presented the details of the 
agronomic work for tne period from 1914 to 1922, inclusive.^ This 
bulletin summarizes briefly the results obtained in 1923 and also 
those for the period from 1914 to 1923, inclusive. 
' Stephens, J. M., and others. Report of the Northern Great Plains Field Station for the 10-year period, 
1913-1922, inclusive. U. S. Dept. Agr. Bui. 1301, 80 pp., illus. 1925. 
