ALFALFA 
5 
PAGE 
Samples taken before bloom, beginning bloom, half bloom, 
full bloom, with seed formed and with mature seed. 
Samples of flowers, leaves, stems, roots, etc. 
Proteids in Alfalfa at Different Periods of Growth and in 
Alfalfa Hays at Ditferent Cuttings .io-ii 
The average percentage of proteids found in our laboratory 
samples, were: in first cutting alfalfa, about 14.0 per cent.; 
in the second cutting, 14.43 per cent.; in the third cutting, 13.05 
percent. In the farm samples, first cutting, 14.92 per cent.; 
second cutting, 13.99 per cent.; third cutting, 13.47 per cent. 
Analysis of Alfalfa Hay as Cut and of the Same Dam¬ 
aged by Rain . 12 
As cut, ash, 12.18; crude fat, 3.94; crude protein, 18.71; crude 
fibre, 26.46; nitrogen free extract, 38.71. Damaged by rain: 
Ash, 12.71; crude fat, 3.81; crude protein, 11.01; crude fibre, 
38.83; nitrogen free extract, 33.64. 
First cutting hay contains more proteids than second or third 
cutting. 
Amount of proteids is nearly stationary from beginning to 
half bloom, and decreases after full bloom. 
Crude Fibre .13-16 
Percentage of crude fibre varies a little, due to varieties; also 
to conditions of soil and moisture. 
Percentage of crude fibre increases with age of plant, but is 
fairly constant from the period of early to full bloom. 
Peroentage of crude fibre in supposedly distinct varieties 
grown in drills was the same as in ordinary hays. 
Percentage of crude fibre in second cutting hay is essentially 
the same as in the first cutting. 
The percentage in third cutting varies more than in the others, 
but averages about the same. 
Fat or Ethei Extract .16-17 
The average percentage extracted is 1.539 per cent. 
Nitrogen Free Extract . I 7 _I 9 
Average~percentages obtained from labratory samples were: 
For first cutting hay. 31.69 
For second cutting hay.34.27 
For third cutting hay.,32.72 
Average percentages obtained from field samples were: 
For first cutting hay. 34.35 
For second cutting hay.34.04 
For third cutting hay. 34.74 
