60 FOOD FOR PLANTS 



Confirms Hawaiian Practice. 



Sugar 



Sucrose Purity Cane yield 



Acre Plots per cent per cent yield tons tons 



1. Acid Phosphate 18.09 92.50 24.96 3.2 



2. Nitrate of Soda and Acid Phosphate 17.38 91.50 38.00 4.7 



3. Nitrate of Soda alone 16.45 89.20 41.50 4.7 



4. Check Plot — no fertilizer 17.55 91.40 30.73. 3.8 



These figures speak for themselves. It is interest- 

 ing to note that the $16 worth of Nitrate used alone 

 produced an increase of 16.54 tons of cane, yielding 

 1.5 tons of sugar, over the acid phosphate plot, which, 

 in terms of cash, represented an increased market 

 value of $138. In view of the stress laid so frequently 

 in the past upon the use of the superphosphate variety 

 of mixes, the sources of Nitrogen in such brands be- 

 ing as a rule entirely unknown to the users, the above 

 experiment is illuminating. This experiment sub- 

 stantially and emphatically confirms Hawaiian re- 

 sults and fully endorses Hawaiian sugar cane 

 practice. 



