56 



The Bulletin. 



Number 



of 



Plat. 



Fertilizer Application per Acre. 



Table VI— 



AVERAGE RESULTS FOR SIX 



(5B+143)-42 ; Unfertilized^ _-- ..0= 



34.6 pounds 13% blood applied at plantings HN= 



30. 4 pounds 14. S% nitrate of soda applied about 



11 '-52 



July lst=-'- 1: J^N= 



150 pounds 14% acid phosphate= P^ 



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



o 



c ^ 



O C" 

 PL, 



4.5 

 4.5 



00 



(K 



O 



o 



j: — 



o 



o 



PU 



oft 



21 



Yield in Bushels 



of Shelled Corn 



per Acre. 



1903 1904 1906 



4.5 



(53+143)-42 Unfertilized= 0= 



30. 4 pounds 14. 8% nitrate of soda applied at 



plantings - J^N= 



30.4 pounds 14.8% nitrate of soda applied about i 



July lst= HN= 



123-62 



4.5 

 4.5 



r 



150 pounds 14%, acid phosphate= P= 21 '-• 



22.5 pounds 20% manure sal t=--- - K= 4.5 



(55+143)-42 Unfertllized=.... 0= 



I 



133-72 i 



14»-112 



153-8= 



34. 6 pounds 13% blood applied at plantings H^'^ , 4.5 _-- ..- 



34.6 pounds 13% blood applied about July lst= }^N= 4.5 



150 pounds 14% acid phosphate= P= 21 ! 



22.5 pounds 20% manure salt= K= j .; 4.5 



Unfcrtilized= 



.0=' 



55.4 pounds 13% blood applied at planting= — 4-5 N= 



12. 2 pounds 14.8% nitrate of soda applied at 



planting^ ..1-5 N= 



150 pounds 14% acid phosphate= P^ 



22. 5 pounds 20% manure salt= K= 



7.2 

 1.8 



21 



4.5 



The check for plats 1 P, 12" and 13'. Field B, have been obtained from plats 0' and 14'. It has been a.ssumed 

 that there is a unilorm increase or decrease in the natural fertility between check plats and a corrected check 

 was figured on this basis for each treated plat between checks. 



EFFECT OF DIFFERENT MATERIALS FURNISHING NITROGEN AND 



TIME OF APPLICATION. 



The tests, the results of which are presented in Table VI, were 

 planned to determine the comparative value of dried blood and 



