KIKrV-FIUST ANNI Al, ItKIM H{'|\" ift 



The fruits from the several plots were not graded for color, but the 

 almost solid red Bon Davis apples of the acid phosphate plot were in 

 strong contrast to tlie fruit of other plots between which there was no 

 noticeable differences. You will readily note the differences when you. 

 see the fruits in the adjacent room. Whether this increased color is 

 due directly to acid phosphate or indirectly because acid phosphate 

 failed to produce satisfactory foliage is questionable. 



The average weight of windfalls and "drop" apples per tree from each 

 plot and the percentage of "drops" is expressed for each plot in the 

 following tabulation: 



Lbs. Drops Per cent of Total Fruit 



Sulphate of ammonia 59.6 20.3% 



Nitrate of soda 44.3 18 



Check 25.8 30 



Acid phosphate 72.5 25.5 



Complete fertilizer 64.6 13.8 



Nitrogen and phosphorus (1 yr.).. . . 64.3 17.7 



The percentage of drops for the check plot is more than two times 

 that for the complete fertihzer plot. The acid phosphate plot ranks 

 second highest in percentage of drops and the two nitrogen plots ran 

 about the same. 



The costs and profits for the several elements and combinations of 

 fertilizers, above those of the check plot, are shown in the following 

 tabulation. Fertilizer for both 1920 and 1921 is charged against the 

 crop because of the crop failure in 1920. 



M 02 



Fertilizer Mixture per tree. ^^ ^ j^g ^| £g,. ^t :^S^ 5 p. 



— 4 lb Sulphate of ammonia.. 173.5 $3.90 28e $3.62 $173 4.6 16.1c 



5 lb Nitrate of soda 141.1 3.17 30e 2.87 138 7.1 21.3c 



40 lb Acid pfiosphate 149.3 3.35 25c 3.10 149 13.4 16.8c 



/^ lb Sulphate of ammonia..! 342.9 7.72 71c 7.01 336 9.9 20.6c 



10 lb Acid phosphate / 



O. lb Muriate potash ] 



4 lb Sulphate of Ammonia. . ^ 239 . 1 5 . 37 27c 5 . 10 245 5.9 1 1 . 2c 



10 lb Acid phosphate J 



The following prices were used in computing above: 



Apples, on trees, per cwt $ 2 . 25 



Sulphate of ammonia 70 . 00 



Nitrate of soda 60.00 



Muriate of potash 60 . 00 



Acid phosphate 25 . 00 



The complete fertilizer plot produced almost two times as much profit 

 per tree as the sulphate of ammonia plot (which slightly excelled the 

 nitrate of soda and acid phosphate plots) but the increase in yield due 

 to fertihzation was produced about 20% cheaper in the sulphate of 

 ammonia plot. The very low cost of increased production for the sul- 

 phate of ammonia-acid phosphate combination is largely because ferti- 



