-8— 
tion. 1 he arrangement of plats and yields are given in the 
following lists: 
Y ariety. 
Early Ohio 
“ u 
< ( 
<( 
< i 
11 
a 
11 
<( 
(< 
(( 
it 
Bose Seedling. 
Average of all Plats. 
-o - ^ VI mi L1KJ JL Cl ulll/j 1 
Average of Plats with Tankage 
Average of Plats with Bone Meal 
Fertilizer. 
Yield of larger 
Yield of small 
Potatoes per 
Plat in lbs. 
Potatoes per 
Plat in lbs. 
None 
16 
22 
Tankage 
28 
16 
Bone Meal 
22 
26 
17 
None 
16 
Tankage 
9 
10 
Bone Meal 
18 
13 
None 
13 
14 
None 
30 
38 
Tankage 
39 
41 
Bone Meal 
26 
30 
None 
24 
28 
Tankage 
30 
39 
Bone Meal 
28 
33 
None 
38 
45 
sr. 
24 
26 
23 
27 
26 
26 
23 
25 
* 
The point that shows most clearly is the great difference 
between neighboring and similarly treated plats. This can 
always be expected in irrigated ground. The yield depends 
largely on the moisture of the ground and even under 
the best of irrigation this is much more irregular than where 
water is supplied by rain. 
. secon d point is that the differences between plats 
similarly treated are greater than between the average of 
plats differently treated. This shows the necessity in work 
ot this kind of having duplicate plats. 
The fertilizer has on the average, increased the yield but 
it has not had the large and decided effect that is produced 
by a soluble fertilizer used in a country where the soil is 
moist m early summer. Both bone meal and tankage require 
moisture to allow the acids of the soil to act on them and 
make them soluble and under Colorado conditions, where 
there is but little rain and no irrigation water is applied 
until the middle of summer it is not surprising that thev do 
not prove successful. 
NOfi-SRCCHflRINE SORGHUAS. 
tn the eastern part of Colorado and the western portions 
-Nebraska and Kansas, the non-saccharine sorghums, such 
as Kaffir Corn, Jerusalem Corn, Milo Maize, etc., have come 
to be largely grown because they require so little water to 
