186 CACAO 



result given by Marcano. This authority estimates that 

 a cacao-tree twenty years old is made up of : 



Trunk . 

 Large branches 

 Medium branches 

 Small shoots . 

 Leaves . 



495 

 211 

 110 

 120 

 6-4 



1000 



and that a plantation of trees of this age growing on one 

 acre will contain : 



whilst the so-called suckers and other young shoots trimmed 

 annually from the trees contain : * 



Nitrogen 84 lb. 



Phosphoric anhydride . . . . . 49 „ 



Potash 42 „ 



Lime . . . . . . . . 66 „ 



Magnesia . . . . . . . 20 „ 



These, together with the leaves, which he states contain : 



Nitrogen 



Phosphoric anhydride 

 Potash 

 Lime . 



gnesia . 



391b. 

 75 „ 

 30 „ 

 32 „ 

 10 „ 



are practically in all cases yearly returned to the soil. 



The fruit, of which the husks may or may not be returned 

 to the soil, according to whether the pods are or are not 

 broken on the field, are estimated to remove as follows : 



If whole fruit removed If the pods are broken 



From these figures it appears that the cacao-tree, whilst 

 storing up in the plant itself relatively large proportions 



* This latter estimate appears to the author to be excessive. 



