34 



The Bulletin. 



TABLE III— RESULTS OF FERTILIZER EXPERIMENTS WITH CORN ON 



PHORIC 



RESULTS IN FIELD B 



Number 



of 



Plat. 



142 



152 



5»+145 



102 



2« 



5» 



Fertilizer Application per Acre. 



13 



(4+11) 



14 



Unfertilized=: -- 0= 



69.2 pounds 13% blood= N= 



75 pounds 14% acid phosphate= J4P= 



22.5 pounds 20% manure salt^ K= 



Unfertilized= 0= 



-g< 



Pi 



5; 



-0T3 



o 

 0^ 



69.2 pounds 13% bIood= --N= 9 



150 pounds 14% acid phosphate^ P= 



22.5 pounds 20% manure salt=^-- - K^ 



69.2 pounds 13% blood= ..N= 



300 pounds 14% acid phosphate= 2P= 



22.5 pounds 20% manure salt= _K= 



69.2 pounds 13% blood= N= | 9 



450 pounds 14% acid phosphate= 3P= 



22.5 pounds 20% manure salt= - K= 



Unfertilized^ — — — 0- 



10.5 



21 



4.5 



4.5 



42 



Yield in Bushels 

 of Shelled Corn 

 per .\cre. 



1903 1904 1906 



63 



4.5 



23.1 



33.8 



21.8 



34.2 



32.7 



22.7 



15.7 



35.7 



10.5 



34.0 



20. 2 15. 9 



37.1 43.2 



29.0 



29.7 



24.2 I 10.6 



28.0 



26.3 



13.3 



RELULTS IN FIELD 



I 



69.2 pounds 13% blood=- N= 



75 pounds 14% acid phosphate^ }^P^ 



22.5 pounds 20% manure salt= - - K^ 



Unfertllized= - 0= 



10.5 



4.5 



69.2 pounds 13% blood= --- --N= 9 



150 pounds 14% acid phosphate= - P= 



22. 5 pounds 20% manure salt=- K^ 



• 



69.2 pounds 13% blood= — N= 



300 pounds 14% acid phosphate= 2P= 



22.5 pounds 20% manure salt= K= 



21 



42 



4.5 



4.5 



1905 

 46.6 



22.2 



47.8 



47.0 



