126 Food for Plants. 



ing being a])])liod on the other two sides. This has given 

 e-ood resnltK and the above method is recommended to 

 California citrus I'ruit growers. 



Citrus Growing in California. 



A five-sixteenths of an acre plot of orange trees at 

 Corona fertilized with Nitrate of Soda and acid phos- 

 phate at the rate of 320 pounds of each per acre yielded 

 at the rate of 411 boxes of high quality fruit. A plot 

 alongside fertilized without Nitrate gave a rate of yiehl 

 of only 322 boxes per acre of inferior fruit. This differ- 

 ence of yield of 89 boxes per acre due to the use of Nitrate 

 shoivs an increase in value of produce equivcdent to 

 $324.85. Each lOO pounds of Nitrate of Soda used in this 

 case added a rate of profit to the grower's income of 

 $101.52 per acre. 



The best source of Nitrogen for citrus fruits is Nitrate 

 of Soda, because of its instant availability. Growth is 

 promoted at once after application is made. It is taking 

 chances to apply any nitrogenous fertilizer not imme- 

 diately available because of the tendency to pro- 

 long growth unduly and to delay maturity; and it is fatal 

 to apply high grade fertilizers too late. In California 

 on alkaline soils or soils having alkaline tendencies the 

 application of Nitrate of Soda with an equal quantity of 

 acid phosphate or super phosphate tends to diminish 

 black alkali present. 



The Rational Use of Chilean Nitrate in California. 



The use of Chilean Nitrate is increasing year by year 

 in England, and it is coming to be more and more appre- 

 ciated there, as well as on the continent of Europe. 



In fact, everywhere in the world where there is pro- 

 gressive and enlightened experiment work, the unique 

 qualities of Chilean Nitrate are putting it ahead of every 

 other nitrogenous plant food. No reputable authority 

 in the world has ever advocated such large quantities of 



