30 
The Colorado Experiment Station 
Of the ambers, the Black is the best variety. Altho in our 
experimental work at Cheyenne Wells, the White did well, it was 
not equal to our local strains of Black Amber. The amber sorg¬ 
hums are best adapted to the southeastern portion of the State, 
altho they do well in the extreme eastern portion. They are less 
well adapted as the altitudes rise close to the mountains, but even 
here they may be grown to some extent. 
Sudan Grass has been tried in the State for three years. It 
was imported from Khartum in 1909. Sudan is a province in Cen¬ 
tral Africa, of which Khartum is the leading city. On this ac¬ 
count the Department of Agriculture officials called the grass 
“Sudan Grass”. This grass has been tested for three years in 
Colorado and has given promise of being the best adapted hay 
crop of the forage sorghum types. It matures in a shorter season 
than amber, stands drouth well, and grows vigorously. Its yield 
will, of course, be largely according to the moisture supply avail¬ 
able and it will vary from 1 to 8 or 9 tons. The latter yield is only 
possible under irrigated conditions. Sudan Grass is not adapted 
to the higher altitudes next to the foothills nor in the Platte-Ar- 
kansas Divide, but is adapted to the rest of the Colorado plains. 
Sudan Grass, one of the best annual hay crops. This crop was hailed to 
the ground August 18; picture taken Sept. 28, 1915 
Preparation of the Soil .—The soil for sorghums should be 
prepared the same as for corn. Owing to the fact that all of the 
sorghums are what might be termed hot weather crops, they re¬ 
quire a warm soil before it is safe to plant. This planting should 
follow corn planting, usually from the 15th to the 20th of May is 
a safe time. Planting may even be delayed until early in June. 
