14 BULLETIN 10, U. S. DEPARTMENT OF AGRICULTURE. 
Schedule of irrigation of Indian corn,, 1911. 
Number of plat. 
Number of 
irrigations. 
Date. 
Depth of 
water 
applied. 
Status of corn. 
1... 
Inches. 
2 
One 
Two 
Three 
June 22 
/June 21 
\Julv 17 
iJune 21 
Uuly 17 
[Aug. 8 
2.3 
2.2 
2.5 
2.3 
2.4 
2.4 
Corn 20 inches high. 
3 
Do. 
4 
Corn coming in tassel. 
Corn 20 inches high. 
Corn coming into the milk. 
In each of these irrigations the furrow method was used, a small 
stream running in each furrow for a long period, thus avoiding 
flooding and. as in previous seasons, a thorough cultivation following 
each irrigation. 
August 16 and IT the corn was harvested, weighed, chopped, and 
stored for winter use. 
The following table shows the results obtained for the two seasons : 
Summary of results of irrigation of com. 
Season. 
Number 
of plat. 
Number of irrigations. 
Depth. 
Yield per 
acre. 
Value at 
$2.50 
per ton. 
Cost of 
irriga- 
tion. 
f 1 
2 
1 3 
I 4 
f 1 
2 
1 3 
Inches. 
None 
Tons. 
6.85 
8.85 
10.05 
10.45 
3.67 
4.86 
5.21 
6.59 
$17.13 
22.13 
25.13 
26.13 
9.18 
12.15 
13.03 
16.48 
One 
3.3 
5.3 
8.0 
$1.50 
1910 
Two 
Three 
3.90 
None 
One. . 
3.0 
4.8 
7.1 
1.40 
1911 
Two 
Three 
3.65 
Note.— Cost of irrigation taken at 30 cents per acre-inch for water and application, plus 50 cents per acre 
per irrigation for furrowing. 
The most noticeable feature in these results" is the decrease in yield 
in 1911, when compared with the yield in 1910. This is due entirely 
to the character of the season. The late spring of 1911 was abnor- 
mally cold and very unfavorable to the production of a good yield, 
even in the presence of an abundance of moisture. 
During 1910 one and two irrigations were applied to advantage, 
while the third irrigation just before harvesting produced an increase 
of but 0.4 ton per acre green weight, and was applied at a loss. 
The season of 1911 shows light yields and small increases, and if 
interest on the investment in pumping machinery and cost of leveling 
the land be added to the cost of irrigation no financial gain would be 
realized. 
EGYPTIAN CORN. 
This investigation followed along the same lines as the investiga- 
tions with Indian corn, the preparation of the land, time of seeding, 
and entire procedure being 
the same up until the time of the first 
