354 THE SMALL GRAINS 



Kansas, Branch Experiment Station, in a comparison of 

 summer tillage with early and late plowing for winter 

 wheat in which the average acre yields for these different 

 methods were 21.1, 11.0, and 5.8 bushels respectively. 



380. Summer tillage in Montana. Next to the stor- 

 age of soil moisture, the chief value of summer tillage is 

 the prevention of weeds. The former feature, in fact, 

 depends largely upon the latter. If the land is not care- 

 fully tilled, its very purpose may be defeated and it will 

 become a fallow in the old meaning of the term. This 

 matter is discussed in a report of experiments of three 

 years by the Montana Experiment Station with spring 

 wheat after cultivated and uncultivated fallow, which 

 resulted in an average yield on the former of 19.26 bushels 

 to the acre, and on the latter of 13.92 bushels. 



In experiments at the Forsyth, Montana, station to 

 determine the value of alternate cropping in the years 

 1908-1910, the total yield of three continuous crops of 

 Kubanka wheat was found to be 13.19 bushels an acre, 

 while two crops after one fallow (cultivated) gave a total 

 of 33.09 bushels, and one crop after two fallows yielded 

 25.83 bushels, even the last one crop making nearly twice 

 as much as three continuous crops. Sixty-Day oats in a 

 similar experiment gave 35.55, 84.24, and 70.69 bushels 

 total yields respectively with the same three methods on 

 one acre. White hulless barley in a third similar trial 

 yielded 12.73, 49.23, and 29.63 bushels respectively. 



381. Summer tillage in Saskatchewan. The larger 

 number of farmers in Saskatchewan practice a triennial 

 fallow, instead of alternate cropping, the rotation being 

 usually wheat-wheat (or oats)-summer tillage. After tak- 

 ing two crops from new land (prairie sod) it is also 

 ,summer tilled. Trials at the Indian Head Experiment 



