52 
Colorado Experiment Station 
Plums (continued) — 
diseases. B. 50 :28, 1898. 
fungous diseases of. B. 212 :36, 
1915. 
insects injurious to. B. 71 :14, 1902 ; 
B. 114:17, 1906; B. 210:24, 1915. 
varieties. B. 17:40, 1891; B. 21:15, 
1892; B. 50:31, 1898; B. 223:48, 
1917. 
Plusia brassicae. See Cabbage plusia. 
Plutella crucifer arum. See Cabbage 
plutella. 
Poa — • 
alpina. B. 12:13, 1890. 
alsodes. B. 12 :17, 1890. 
andina. B. 12:14, 1890. 
urtica. B. 12 :25, 1890. 
caesia. B. 12 :13, 1890. 
compressa. See Wire grass. 
eatoni. B. 12:25, 1890. 
flexuosa var. occidentalus. B. 12 : 
21, 1890. 
laevis. B. 12:12, 1890. 
laxa. B. 12 :18, 1890. 
pratensis. See Kentucky blue grass. 
serotina. B. 12 :22, 1890. 
sylvestris. B. 12 :25, 1890. 
tenuifoUa See Bunch grass. 
Poison — 
ivy (Rhus rydbergii.) B. 211 :50, 
1915. 
oak, notes. B. 211 :50, 1915, 
Poisonous plants. See Plants, poison- 
ous. 
Polypogon monspeliensis. See Beard 
grass. 
Poplar tree borer (Saperda calcarata ) 
B. 6:17, 1888. 
Pork products shipped into Colorado. 
B. 153 :5, 1910. 
Post, William M, Test in measurement 
of water applied to field of. B. 22 T6 
1893. 
Potassium compounds in soils. B 196- 
36, 1914. 
Potato — 
average yield per acre. B. 175 -5 
1910. 
beetle — 
(Doryphora l^i-Uneata.) B. 47: 
43, 1898. 
(Leptinotarsa decemlineata.) B. 
175:42, 1910; B. 199:48, 1914. 
blight. B. 92 :5, 1904 ; P. B. 8 in B, 
64 :21, 1901 ; B, 138 :19, 1909. 
B. 175:37, 1910; B. 212:37, 1915; 
B. 243:28, 1918. 
treatment. P. B. 8 in B, 64 :21, 
1901. 
Potato (Continued) — 
cellar — 
construction and management. 
B. 175 :47, 1910. 
fumigation. B. 220:28, 1917; 
B. 243 :34, 1918. 
curly leaf. B. 243 :29, 1918, 
diseases. P, B. 26, 1906 ; B. 175 : 
36, 1910; B. 220:26, 1917; B. 
243 :28, 1918. 
Corticum vagum. B. 92 :3, 
1904. 
notes. B. 69 :17, 1902. 
dry rot. B. 243 :31, 1918. 
flea beetle (Epitrix cucumeris ) — 
description and remedies. B. 
175:43, 1910. 
notes. P. B. 23, 1904; R. 17:92, 
1904. 
fusarium. B. 243 :28, 1918, 
history of. B. 175 :11, 1910. 
industry. B. 117, 1907, 
Carbondale district. B. 117 :4, 
1907. 
Greeley district. B. 117 :4, 1907. 
history. B. 216:26, 1915. 
San Luis Valley. B. 117 :5, 
1907. 
leaf-roll disease. B. 216 :28, 1915. 
machinery. B, 117 :20, 1907. 
RMzoctonia. B. 70 :3, 1902 ; B. 
91, 1904; B. 117:16, 1907; B. 243: 
29, 1918. 
experiments. B. 70:7, 1902; B. 
91 :21, 1904. 
treatment. B. 70:11, 1902; B. 
117 :16, 1907. 
scab. B. 92:5, 1904; B. 212:37, 
1915 : B. 243 :30, 1918. 
worm. R. 6 :55, 1893. 
seed — 
selection, B. 176 :5, 1910. 
treatment. B. 117 :20, 1907. 
tuber moth. B. 199 :48, 1914. 
Potato culture in Colorado. E. P. 
Sandsten. B. 243, 1918. 
Potato failures. W. Paddock and P. M, 
Rolfs, P. B. 8 in B. 64 :21, 1901. 
Potato failures. W. Paddock. P. B. 
12. 1902. 
Potato failures, a preliminary report. 
F. M. Rolfs. B. 70, 1902. 
Potato failures, a second report. F. M. 
Rolfs. B. 91, 1904. 
Potato flea beetle. S. Arthur .Johnson. 
P. B. 23, 1904. 
Potato growing in Colorado. E. P. 
Sandsten. B. 220, 1917. 
Potato industry in Colorado. C. L. 
Fitch and E. R. Bennett. B. 175, 
1910. 
