14 



DRY-LAND GRAINS FOR NORTH AND SOUTH DAKOTA. 



the otlier October 5. The average of all the plats of each variet}" is 

 given in the following table: 



T.\Bi.E VI. — Yield per acre of ivinter wheat grown at the experiment farm, BeUefourche, 



S. Dak., in 1908 and 1909. 



The average of the two years' test at BeUefourche shows that the 

 Turkey variety (G. I. No. 3055) produced the highest average yield, 

 33.4 bushels per acre, having exceeded the next best, the Kharkof 

 (G. I. No. 1442), by 0.5 bushel per acre. It also has the highest 

 weight per bushel and the highest percentage of winter survival. 

 Results are not reported for either Highmore or Dickinson. 



In addition to the varieties just discussed, which were grown on 

 one-tenth acre plats, about thirty-five were grown in rows. These 

 w^ere obtained from various sections of the United States and Canada, 

 and are the best varieties grown in their respective localities. Of 

 these, the winter survival of all but ten was below 50 per cent. The 

 winter survival of twenty-two varieties w^as less than 2 per cent. 

 Only one variety, Turkey, survived to the extent of 90 per cent. No 

 stronger proof should be needed that the farmer must exercise great 

 care in the selection of varieties for his farm. 



COMPARISON OF WINTER WHEAT AND DURUM WHEAT. 



At the BeUefourche experiment farm the winter wheat has yielded 

 practically the same as the durum wheat when grown under the 

 same conditions. In 1908 the average yield of the seven best varie- 

 ties of winter wheat was 23.4 bushels per acre, whereas an average 

 yield of 23.2 bushels w^as obtained from seven varieties of durum 

 wheat grown on similar ground. The difference in yield between 

 the best variety of each for the season is 0.6 of a bushel in favor of 

 winter wheat. 



During the season of 1909 winter wheat on summer-fallowed 

 ground produced from 31.5 to 44.5 bushels per acre according to the 

 variety. A plat of the Kubanka durum wheat grown in the same 

 field, l)ut in a different part of the series and on lower ground, pro- 

 duced 36. S l)ushels per acre. An adjoining plat of the Turkey win- 



[Cir. 50] 



