322 Fertilizers 



Brunswick, shows the kinds and amounts of plant-food 

 that are needed in order to grow the tree and to make 

 mature fruit. " It was shown in that experiment that an 

 acre of peaches would require annually after coming to 

 the period of bearing, and averaging 2000 baskets of 

 peaches to the acre in ten years 



Nitrogen 71 Ib. 



Phosphoric acid 22 Ib. 



Potash 48 Ib. 



or an equivalent each year of nitrogen equal to 460 Ib. of 

 nitrate of soda, phosphoric acid equal to 150 Ib. of acid 

 phosphate and potash equal to 100 Ib. of muriate of 

 potash." 



At about the same tune experiments conducted in Ger- 

 many showed the average quantities of nitrogen, phos- 

 phoric acid and potash, and lime removed by apples to be 



Nitrogen 71 Ib. 



Phosphoric acid 20 Ib. 



Potash 80 Ib. 



Lime 95 Ib. 



and for pears the quantities removed to the acre were: 



Nitrogen 91 Ib. 



Phosphoric acid 18.5 Ib. 



Potash 71 Ib. 



Lime 120 Ib. 



The results confirm in a remarkable manner those 

 obtained in this country for peaches, more particularly 

 the large amounts of plant-food required annually in the 

 growth of these crops. In the German experiments, the 

 greater amounts of potash are in all probability due to the 

 more liberal supply at the disposal of the German farmers. 

 The amount of lime is likewise interesting and remarkable. 



