44 HATCH EXPERIMENT STATION. [Jan. 



furnishing the same amount of nitrogen, phosphoric acid 

 and potash as would be furnished by 1,800 pounds of fer- 

 tilizer having the average composition of the "special" 

 corn fertilizers analyzed at this Experiment Station in 1899. 

 This average is as follows : — 



Per Cent. 



Nitrogen, 2.37 



Phosphoric acid, 10.00 



Potash, . , « 4.30 



The fertilizers analyzed varied widely in composition, 

 the range for each of the elements being shown by the 

 following: : — 



Nitrogen, . 

 Phosjihoric acid, 

 Potash, 



Per Cent. 



1.6-3.7 

 9.0-13.0 

 1.6- 9.6 



The other two plots — 2 and 4 — received annually an 

 application of materials practically the same in kind and 

 quantity as those recommended in Bulletin No. 58 for corn 

 on soils poor in organic matter. These plots are supplied 

 with a much larger quantity of potash and with less phos- 

 phoric acid than the other plots in the field. The fertilizers 

 applied to the several plots are shown in the following 

 table : — 



Fektilizebs used. 



Plots 1 and 3 

 (Pounds Each). 



Plots 2 and 4 

 (Pounds Each) . 



Nitrate of soda, . 

 Dried blood, 

 Dry ground fish, 

 Acid lihosphate. 

 Muriate of potash, 



30.0 

 30.0 

 37.5 

 273.0 

 37.5 



50.0 

 50.0 

 62.5 



During the past year this field has been in gi'ass, having 

 been seeded in the corn crop of last year in the latter part 

 of the month of July. The season has been favorable to 

 the hay crop, and the field has been cut twice, July 1 and 

 August 28. The hay was housed in good condition. The 

 tables show the yields : — 



