30 



COMPARISON OF THE YIELD PER ACRE OF OATS AND BARLEY 

 GROWN TOGETHER, AND EACH ALONE, WITHOUT MANURE, 



AFTER SWEDES. 



SAWPIT FIELD, 1912. 

 LITTLE KNOTT WOOD FIELD, 1913. 



CHALKING EXPERIMENTS. 



BARLEY (Plumage Cross.) 



LITTLE KNOTT WOOD FIELD, 1913. 



Both plots manured with £ cwt. Sulphate Ammonia and 2£ cwt. Superphosphate 

 per acre. 



A GENERAL Account of the Rothamsted Field Ex- 

 periments is given in The Book of the Rothamsted 

 Experiments, by A. D. Hall, M.A., price 10/6 (John 

 Murray). 



A short summary is given in The Guide to the 

 Rothamsted Experimental Plots, 2nd Edn., 1913, 

 price 1 - 'John Murray). 



