Sept, 2, 19x8 
Acidity of Silage Made from Various Crops 
401 
CORN SILAGE 
Corn used for silage in 1916 was the Disco Pride com, cut when the 
kernels were in the glazed stage. The amount and kinds of acid are 
given in Table II, 
OATS AND PEAS 
The oat and pea silage was made from a crop of white Canada field 
peas and Swedish Select oats sown at the rate of 60 pounds of the former 
and 40 pounds of the latter per acre. The crop was cut when the peas 
were beginning to harden in the pods and when the oats were in the 
dough stage. The results on acidity are given in Table II. 
WHEAT AND PEAS 
The wheat and pea mixture was made from a crop of white Canada 
field peas and Palouse Bluestem wheat sown at the rate of 75 pounds of 
the former and 25 pounds of the latter per acre. The peas grew luxu¬ 
riantly, and the green weight of the peas exceeded considerably the 
green weight of the wheat. The crop was cut when the peas were 
beginning to harden in the pods and when the wheat was in the dough 
stage. The data #n acidity are given in Table II. 
Table II.— Acidity produced by corn silage, oat and pea silage, and wheat and pea silage 
in large, silos , Idaho , 1916 
Acid. 
CORN SILAGE. 
(Date of sampling, Dec. 4, 
1916; moisture, 77 per 
cent; dry material, 23 per 
cent; location, 15 feet 
from top of silo). 
OAT AND PEA SILAGE. 
(Date of sampling, Oct. 6, 
1916; moisture, 76 per 
cent; dry material, 24 
per cent). 
WHEAT AND PEA SILAGE. 
(Date of sampling, Nov. 11, 
1916; moisture, 73.3 per 
cent; dry material, 26.7 
per cent; location, 6 feet 
from bottom of silo). 
Addity in too gm. of— 
Acidity in 100 gm. of— 
Acidity in 100 gm. of— 
Silage 
juice. 
Silage 
con¬ 
taining 
original 
moist¬ 
ure. 
Silage 
on dry 
basis. 
Silage 
juice 
Silage 
con¬ 
taining 
original 
moist¬ 
ure. 
Silage 
on dry 
basis. 
Silage 
juice. 
Silage 
con¬ 
taining 
original 
moist¬ 
ure. 
Silage 
on dry 
basis. 
Gift. 
Gm. 
Gm. 
Gm. 
Gm. 
Gm. 
Gm. 
Gm. 
Gm. 
Acetic. 
1.022 
0.787 
3.46 
0. 542 
0.396 
1.47 
0.718 
0.526 
1.97 
Propionic. 
■053 
.041 
.18 
.038 
.028 
. 10 
.052 
.038 
.14 
Total volatile. 
I-07s 
.828 
3.64 
• 580 
.424 
57 
.770 
•564 
2 . XI 
Lactic. 
1,280 
.986 
4-33 
1.690 
1-234 
4-57 
x.420 
2.048 
3-90 
Total acidity. 
a -355 
1.8x4 
7-97 
2.270 
I.660 
j 6.14 
2.190 
X.612 
6.01 
Discussion op Results 
Corn silage.-—A ll samples of com silage examined in 1915 and 1916, 
showed the usual acid fermentation. There was more lactic acid formed 
than acetic and propionic acids, and butyric acid was absent from all 
