WATER AND GERMINATION 209 
PERCENTAGE OF WATER CONTAINED BY SEEDS AT 
SATURATION 
GERMAN UTaH 
Ry@ 24 @€ & es 58 — 
Wheat ..... 57 52 
Oats... . 58 43 
Barley . .... 50 44 
Corn a ee 44 57 
PO@a8 Ge el Se! ae. 's 93 —— 
Beans ..... 95 88 
Lucern . ... . 78 87 
Germination itself does not go on freely until this 
maximum saturation has been reached. Therefore, 
if the moisture in the soil is low, the absorption of 
water is made difficult and germination is retarded. 
This shows itself in a decreased percentage of ger- 
mination. The effect upon germination of the per- 
centage of water in the soil is well shown by some of 
the Utah experiments, as follows: — 
Errect oF Varyinc AMOUNTS OF WATER ON PERCENTAGE OF 
GERMINATION 
Per Cent Water in Soil . . | 7.5 | 10 | 125] 15 | 17.5] 30 | 225] 25 
Wheat in Sandy Loam 0.0 | 98 | 94.0] 86 | 82.0} 82 | 82.0 6 
Wheat in Clay . . .| 80.0] 48 | 84.0] 94 | 841.0] 82 | 86.0] 58 
Beans in Sandy Loam’ : :| 0.0 O | 200] 46 | 66.0] 18 8.0 9 
Beans in Clay . - .| 0.0 0 6.0 | 20 | 22.0} 32 | 30.0] 36 
Lucern in Randy Loam: || 0.0{| 18 | 680| 54 | 54.0 8 8.0 9 
Lucern in Clay . * 8.0 8 | 544.0] 48 | 500) 32 | 14.9] 14 
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