10 



AGDELL FIELD 



Unmanured 



Minerals only, 

 no Nitrogen 



Complete Manure 



Fig. 1. — Effect of Manure upon Crops grown in Rotation. Total Produce. Average 

 of Five Courses (1884-1903). Swedes in 100 cwt. ; Barley and Wheat in 1000 lb. ; 

 and Clover in 10 cwt. 



Table III. — Crops grown in rotation, Agdell Field. Effect of the largest Clover or 

 Bean Crop on the following Wheat Crop. Total prodvjceper acre. 



Table IV. — Crops grown, in rotation., Agdell Field. Effect of Clover or Beans on the 

 following Wheat Crops, Total produce per acre. 



* 7 yea H (1874, 18,v2, 1866, 1894, 1W02, 1906, ;tiid 1910). 

 t 7 years (1876, 18-<3, 1887, 1895, 1903, 1907, and 1911). 

 X 8 years (1854, 1858, 1862, 1-66, 1870, 1878, 1890, and 1898). 

 S 8 year* (1855, 1859, 1863, 1867, 1871, 1879, 1891, and 1899). 



