156 



Plant Physiology 



It is also further interesting to note the requirements 

 per tree and also per acre in the case of certain fruits, as 

 shown in the following tables reported by the New York 

 Experiment Station : - 



IMPORTANT NUTRIENTS USED DURING A GROWING SEASON BY 



MATURE FRUIT TREES 1 



NUTRIENTS USED PER ACRE BY DIFFERENT FRUIT TREES 2 



1 N. Y. Agl. Exp. Sta., Bui. 265 : p. 366. 



2 Ibid., p. 369. 



