24 BULLETIN 402, U. S. DEPARTMENT OP AGEICULTUEE. 



The yields of two varieties of durum wheat have averaged slightly 

 higher than those of the best winter variety. However, in the case of 

 the winter variety there was one year of failure, which may not occur 

 again in a long series of years. If this is true, the winter wheat will 

 probably take first rank. It should also be noted that when winter 

 wheat winterkills, the land can be resown to spring wheat. The 

 winter wheat should then be credited with the returns from the 

 spring wheat grown on the land that year, less the cost of seed and 

 sowing. If this were done for the year of failure in Table XVI it 

 would place winter-wheat yields above those of spring wheat. At 

 present there is probably greater value represented in the slightly 

 lower yield of winter wheat on account of the higher market price. 

 In case the grain is ground and used for feed the market price would 

 not be a factor. 



In 1908 the durum wheats produced about 25 per cent more grain 

 than the winter wheats, while the common spring wheats gave yields 

 about equal to the winter varieties. In 1909 the spring wheats 

 yielded well and winter wheats faUed. In 1910 winter wheats pro- 

 duced nearly double the yields of spring wheat. In 1911 the 

 winter-wheat yields were about 50 per cent higher than those of any 

 of the spring varieties except Galgalos, which yielded 1.7 bushels per 

 acre more than the best winter variety. In 1912 the winter-wheat 

 yields averaged about 40 per cent more than the spring-wheat yields. 

 In 1913, 1914, and 1915 the differences were not great. 



To summarize: In 1909 spring wheat gave good yields, while winter 

 wheat was a failure; in 1910, 1911, and 1912 the winter-wheat yields 

 were distinctly larger than those of spring wheat; while in 1908, 

 1913, 1914, and 1915 the differences were not great. For the eight 

 years, the average yields of the winter varieties and durum spring 

 varieties are about equal, while the spring commons are 2 to 3 bushels 

 lower. When all the facts are considered, it appears that winter 

 wheat will return more value per acre than spring wheat. 



EXPERIMENTS WITH OATS. 



The better varieties of oats have made fair yields at the Akron 

 Field Station in all except one of the eight years during which they 

 have been tested. In 1911 the yields were low except that of Colo- 

 rado No. 37 (C. I. No. 619), which was located on a plat that received 

 some extra water from run-off. Four varieties have been grown dur- 

 ing the entire eight years. The average yield of these four varieties 

 was 42.5 bushels per acre. They include two early and two mid- 

 season varieties. The average yield of the midseason group is slightly 

 larger than that of the early group. 



