256 CAMPBELL'S SOIL CULTURE MANUAL 



again in 1902, and cropped in 1903-4-5-6, averaging in the 

 four seasons fully 40 bushels per acre. The last crop, that 

 in 1906, a very good year, and the yield was the largest 

 ever grown on the land. 



THE BURLINGTON FARM. 



Second, and more important, because conducted with 

 even greater care, was the results from the Burlington 

 model farm. This is a tract at Holdrege, Nebraska. In 

 1905, for instance, wheat to the amount of 54J bushels 

 and testing 63 pounds, was secured from summer tilled 

 lands, while other lands well handled on the same farm 

 but not summer tilled, only gave 32 bushels testing 60 

 pounds. In 1906 what on summer tilled ground gave 51 J 

 bushels testing 64 pounds. Wheat as a second crop on 

 land summer tilled in 1904, which yielded 54J bushels in 

 1905, yielded in 1906 49J bushels testing 63 pounds. 

 Wheat on land well handled but never summer tilled 

 yielded 28 bushels testing 60^ pounds. This all showed 

 the marked effect of summer tilling on the second year's 

 crops. 



Again, it was shown in experiments on a farm in Hitch- 

 cock county, Nebraska, in a crop of 1904, what could be 

 accomplished. Here a wheat crop of 41 bushels per acre 

 was obtained on ground properly handled under the 

 Campbell system, when 90 per cent of over 20,000 acres 

 in the same county was a total failure. 



At Grainfield, Kansas, in the same year, a yield of 56 

 bushels per acre was obtained, when many fields around 

 failed entirely because of the drouth in 1903 which con- 

 tinued up till the spring of 1904. 



Henry F. Kipp has had success with the Campbell method 

 in Western Nebraska, where in the summer of 1904, he 



