12 
THE COLORADO EXPERIMENT STATION 
PAGE 
Effects of Alfalfa Growing on the Soils Restated 74-77 
78-89 
Appendix 
Preparation of samples, page 78. Preparation of ash, page 
79. Methods of analyses, pages 80-82. Determination of 
phosphoric acid, manganese, lime and magnesia, page 82. 
Determination of chlorine and sulphur, page 83. Loss of 
chlorin on incineration, page 85. Maximum, 2.38 per cent. 
Loss of sulphur on incineration, 2.0 per cent., page 87. Loss 
of phosphorous or phosphoric acid none, page 87. Some 
results obtained at other stations, page 89. 
Analyses of Colorado Alfalfa Hays and Parts of 
Plants 
90 
Analyses of hays, etc., pages 31 and 32. Same calculated on 
water free basis, page 90. Analyses of good alfalfa hay, first 
cutting, moisture, 6.04 per cent.; ash 9.30; fat, 1.19; crude 
protein, 14.41: crude fiber, 36.54; nitrogen free extract, 32.50; 
amid nitrogen, 0.372 per cent, second cutting, moisture, 6.61; 
ash, 9.91; fat, 1.18; crude protein, 16.11; crude fiber, 37.24; 
nitrogen, free extract, 28.90; amid nitrogen, 0.350 per cent.; 
third cutting, moisture, 5.78; ash, 9.38; fat, 1.61; crude protein 
12 53; crude fiber, 39.35; nitrogen free extract, 31.35; amid 
nitrogen, 0.10 per cent. 
Compilation of Analyses Published Prior to 1896 . . 91 
Ash Analyses—All Colorado Samples. 92 
Description of Plates.94-95 
Plate /.—The largest individual plant found in Colorado. Diam¬ 
eter of top. 18 inches, stems 360. 
Plate //.—Exhibits face of opening thirteen feet deep in alfalfa 
field on Experiment Station farm at Rocky Ford, showing 
root system and distribution in soil. 
Plates III . and IV .—Largest roots dug out, 11 feet nine inches 
long. 
Plates V. and VI.- Show typical root system of alfalfa as it grows 
in Colorado. 
Plates VII. and VIII.— Show alfalfa roots which have branched 
to a very unusual degree. 
Plate AT.—Yearling alfalfa plants grown in rich soil. Three 
feet nine inches. 
Plate X. —Alfalfa seedlings nine months old; roots nine feet 
three and three-fourths inches long. 
Plate XI. —Shows lower end of tap root nine feet eleven inches 
long. Shows tubercles at this depth. 
Plate XIII. —Shows mass of fibrous roots taken from gravel 
filled with water. 
Plate XIV — Shows large clusters-of tubercles 234 inches across 
as they were found at a depth of from three to five feet. 
Plates XV.,XVI. and XVII.— Show the progressive decay of the 
crown of the alfalfa plant. 
Plate XVIII.— Shows gopher eaten roots with the small ad¬ 
ventitious roots thrown out by the alfalfa plant. 
