€28 Agricultural Experiment Station, Ithaca, N. Y. 



Table XVI. 

 Amount and value of leaves from an acre of trees. 



Lbs. Value. 



Total weight (one year) 8120.7 



Total weight nitrogen 33.6 $5 04 



Total weight phosphoric acid 12.95 91 



Total weight potash 46.2 2 08 



$8.03 



The total value of the respective ingredients in the tree, including 

 leaves is as follows : 



Table XYII. 



Value per 

 One tree. acre (35 trees.) 



Nitrogen $136 $47 60 



Phosphoric acid 24 8 40 



Potash 40 14 00 



$2 00 $70 00 



SUMMAKY. 



Table XYIII. 



Total weight of wood from an acre of trees 5,251.4 lbs. 



Value in planted food (nitrogen, phosphoric acid and potash) $61.97 



Total weight of leaves from an acre of tree^ 8,120.7 lbs. 



Value $8.03 



Total value $70.00 



Computing from Table XVI, the leaves of 35 mature trees 

 (an acre) would require the following amounts of plant food in 

 twenty years : 



Table XIX. 



(Leaves.) 

 Lbs. Value. 



Nitrogen 672 $100 80 



Phosphoric acid 259 18 13 



Potash 924 41 58 



Total for twenty years $160 51 



If the amount of plant food required to grow the apples for 

 twenty years be added to this, as shown in Table YII, which repre- 

 sents ten years, the following results are reached : 



