Soil Test Experiment in 1918. 47 



OATS. SERIES A igi8. 



The plots arranged in their relations to fertilizer used are 

 shown in the following triangular diagram. The yield of straw 

 is omitted from the diagram but is given in the table on page 44. 



Diagram of Oat Soil Test Experiment 19 18. Series A. 



The top number above the * is the plot number. The numbers con- 

 nected by the - show the fertilizer formula, applied at the rate" of 300 

 pounds per acre. The letters N, P and K indicate the parts of the 

 triangle where ammonia, available phosphoric acid and potash are re- 

 spectively at their maximum amounts. The numbers below the * give 

 the yield of oats per acre. The arrangement of the plots is shown by 

 the diagram on page 



N 



Highest Ammonia 



48 



20-0-0 



* 



29 









43 





32 

















16-4-0 





16-0-4 















38 



23 



31 



3*0 



16 













12-8-0 





12-4-4 





12-0-S 













* 





* 





* 











42 



21 



26 



33 



14 



25 



45 









8-12-C 



I 



8-8-4 





8-4-8 





8-0-12 









* 





* 





* 





* 







35 



24 



18 



17 



33 



25 



25 



24 



37 





4-16-0 



1 



4-12-4 





4-8-8 





4-4-12 





4-0-16 





* 





* 





* 





* 





* 





23 



11 



39 



13 



47 



25 



19 



15 



17 



21 



24 



0-20-0 



0-16-4 





0-12-8 





0-8-12 





0-4-16 





0-0-20 



* 



* 





* 





* 





* 





* 



29 



P 



11 





14 





10 





21 





19 



K 



Highest Phos- 

 phoric Acid 

















Highest Pot- 

 ash 



15 



22 





27 





34 





41 





46 



0-0-0 



0-0-0 





0-0-0 





0-0-0 





0-0-0 





0-0-0 



* 



* 





* 





* 





* 





* 



20 



29 





21 





23 





28 





18 



49 



29 





36 





21 





28 





44 



0-0-0 



5-8-7 





4-8-10 





4-8 1 -8 





4 2 -8-8 





4 3 -8-8 



* 



* 





=1= 





* 





* 





* 



19 



11 





14 





28 





15 





24 



Phosphoric acid in form of floats. 2 Ammonia in form of dried 

 blood. s Ammonia in form of tankage. 



