CULTIVATION. 



167 



Assuming, further, 2,727 as the number of plants per acr«, 

 the weight of dry matter removed from the soil by each plant 

 will average 1286"8 grams, of which 



The cones take 

 Tbe leaves take 

 The bine takes 



Grams. 

 110-3 

 539-2 

 607-3 



These figures, referred to the four principal food-stuffs in 

 the soil — potash, lime, phosphoric acid and nitrogen — work 

 out as follows : — 



It is scarcely necessary to add that these figures are 

 merely intended to serve as approximate indications, since 

 they will naturally fluctuate according to the variety of the 

 hop, soil, manuring, season, method of cultivation, etc. 

 Their value should not, however, be under-estimated, since 

 it is not feasible to consider every special case by itself, 

 whilst at the same time it is necessary to approach the 

 question of hop-manuring from a definite point of view. 



