26 



BROADBALK FIELD 



Table XIII. — Experiments on Wheat, Broadbalk Field. Manuring of the 

 Plots per acre per armum, 1852 and since. 



Table XIV. — Experiments on Wheat, Broadbalk Field. Produce of Grain and 

 Straw per acre. Average over 51 years (1852-1902) ; aTid over 10 years (1893- 

 1902) ; also Produce in 1905. 



Plot. 



Abbreviated Description 

 of Manuring. 



10 



11 



12 

 13 

 14 

 15 

 16 

 17 

 18 

 19 



Farmyard Manure .... 



Unmanured ...... 



Minerals 



Single Ammonium-salts and Minerals . 



Double do. do. 



Treble do. do. 



Single Nitrate and Minerals . 



Double Ammonium-salts alone . 



Do. and Superphosphate . 

 Do. do. and Sulph. Soda 



Do. do. and Sulph. Potash 



Do. do. and Sulph. Mag. 



Double Amm. -salts in autumn, and Minerals 



Double Nitrate and Minerals 

 \ Minerals alone, or Double Ammonium-salts/ 

 / alone, in alternate years . . • \t 



Rape Cake alone .... 



* Produce by Minerals. 



t Produce by Ammonium-salts. 



