n] 



SUPPLEMENTING WITH ARTIFICIALS 



17 



In a rotation experiment at Cambridge 1 the addition of 

 artificials as well as farmyard manure not only increased the 

 mangold crop, but also the two following crops : 



10 tons farmyard manure to 



mangolds 

 10 tons farmyard manure 



+ complete artificials to 



mangolds 

 Artificials only to mangolds 



Mangolds 

 1903 



tons cwts 



24 8| 



Oats, 

 1904 



31 

 26 



13J 

 11* 



gram 

 bushels 



65* 



70* 

 64* 



straw 

 cwts 



33J 



36* 

 35 



Seeds, 

 1905 



cwts 

 30* 



46* 

 39 



Sdxmundham Results 1910-13. 



i i i * * 



No phosphate Complete No dftifici&ls Phosphate (&N)ddded 



AftificiftU only Artificials & Favmyivd manure 



Fig. 7. Showing the advantage of using artificials with dung; and also that a 

 shortage of dung may be met by complete artificials. 



1 Cambridge Reports, Guide to Experiments, 1905, p. 36. 

 K. M. 2 



