10 
Research Bulletin No. 5 
the lower limits of the soil zone occupied by the roots of the 
crop. 
27. Away from a source of free water and in a soil partially 
dry, capillary movement has not been detected. 
28. Water supply by capillarity is not an important factor in 
crop production on Nebraska upland soils. 
29. The indications are that it requires almost twice as much 
water to produce one pound of dry matter in small grain in an 
unfavorable season as is required in a favorable season. 
30. A year that is unfavorable for small grain is not neces- 
sarily unfavorable to corn, as the drouth which injures one may 
not extend into the most rapid growing period of the other. 
