CEREAL CULTIVATION EASTERN AREA 327 



it will often gain on the crops sown early but under less 

 favorable conditions. 



A definite date of seeding cannot be specified even for 

 a particular locality, as it will depend upon the kind of 

 crop, its intended use, and the nature of the season. 

 In general, there should be a difference of one day in time 



FIG. 98. Date-of-seeding test of winter barley at Arlington, Virginia: 

 on left, sown Nov. 24 ; on right, sown Sept. 15 ; condition on April 15 

 following. 



of seeding for each 10 miles of latitude, the date being 

 earlier to the north or later to the south of a given 

 point. Also the seeding should be one day earlier for 

 each 100 feet increase in elevation. There is a consid- 

 erable period, in any part of which winter grain may be 

 sown with about the same' results, which period is longer 

 toward the south. Usually the order of seeding winter 

 cereals is first oats, then barley, then wheat, and last rye. 



