168 ALFALFA. 
sition of the ash during this period, but the next table shows 
that there is a slight decrease in the percentage of the several 
ash elements owing to a decrease in the percentage of total 
ash. It must be noted that the blossoms appeared soon af- 
ter June 3rd, the time the first sample was taken, so that 
this work represents only the last period of growth. The 
figures gven in the table following are calculated from the 
data of the table immediately preceding and the percentage 
of total ash. 
TABLE NO. LXXIII. 


IN 100 POUNDS OF DRY MATTER 




Leaves | Leaves | Leaves Stems | Stems Stems 
Cut Cut Cut Cut | Cut Cut 
| June 3 June 16 | June 30 June 3 | June 16 | June 30 
| lbs lbs lbs lbs | lbs lbs 
Phosph’t’s(P205)| -.608 457 357 653 | 573 49 
Potash (K20)..... | 1.345 tS 988 fateh |] at.z/ | 1.268 
Eimer (CaO) eecescs | 1.949 al fei) 2.76 957 | «72 735 
| | | 
Magnesia (ei). 303 503 312 “som | -24 | -216 


The most noticeable feature of the following table is the 
large amount of phosphates shown to be in the seed and the 
large amount of potash and lime in the cured hay. 
TABLE NO. LXXIV. 




IN 100 POUNDS OF DRY MATTER 
Alfalfa Alfalfa ist Crop Alfalfa Alfalfa 
Cut Cut Alfalfa Seed Rootes 
June 30 | July 14 Hay we oors 
lbs lbs lbs lbs lbs 
TOtalvAshieees.e sce nscciecsestnesess 10.67 7.15 8.30 3.37 4.22 
Phosphates (Pe2Q5)....... ..... IES Io) .69 61 1.72 .66 
Potash wy (K5@)) eee --cceseseeceene: 2.54 1.65 2.99 aicilat 76 
TIMEX (Ca) asasear soe seeeeatiensoes PAL O7¢ 1.74 1.31 -05 63 
Magnesia (MgQ)................ -46 -36 32 18 34 







An alfalfa field will yield on an average 8,000 pounds of 
cured hay per acre in one season. This cured hay will con- 
tain about 6,880 pounds of dry matter. The number of 
pounds of each of the four most important ash constituents. 
removed from an acre by a season’s crop of alfalfa hay, as 
compared with that removed by acrop of clover hay, is. 
given in the following table: 
