CHAPTER X 



MANURES (continued) 



GENERAL RESULTS (Report XVI, 59) 



THE two salient features of the manurial experiments at Ridg- 

 mont are, the almost entire absence of effect of all manures on 

 apple trees, and the extraordinarily great effect of dung on bush 

 fruits, especially gooseberries. 



As regards artificial manures, the differences in behaviour of 

 the various plants are not very striking, and may be sufficiently 

 illustrated by the following rough summary 



Gooseberries certainly do not show any exceptional sensitive- 

 ness to these manures, and neither they, nor any of the other 

 plants examined, are affected by artificials to the same extent as 

 are even apples in the Millbrook soil. 



The results in respect to dung are, however, of much more 

 interest. They are depicted in the accompanying figure (Fig. 15). 

 The effect in the case of apples is represented by a nearly 

 horizontal line, there being no appreciable rise in the values as the 

 dose is increased ; with strawberries the increase is very small, 

 but with potatoes and onions it becomes more significant, rising 

 to 40 per cent. A very much greater rise, however up to an 

 increase of 100 per cent., or more is experienced with raspberries 

 and currants, and it is of interest to note how similar the results 

 with them are to those with apples in the Millbrook soil (Apples 

 (M.) ). When we come to gooseberries, however, the increase is 



