200 



MAINK AGRICUM'LIRAI. KXl'KRI ^rIvNT STATION. 



1903. 



same pen as Xos. 2 and 3 was found to carry i.2<S per cent of 

 nitrogen. 



The composition of the dnno; would vary with the food fed. 

 According to the N. Y. Station atialyses, "the manure from the 

 fattening fowls was more valuable than from those which were 

 laying, mostly from the larger content of nitrogen." 



FERTILIZING CONSTITUENTS OK FKKSII HEN MANURE. ANALYSES 

 MADE AT AMERICAN EXPERIMENT STATIONS. 



Source of analyses. 





Fertilizing Constituents. 



"A 





New Jersej' Station Bulletin 84 — 

 New Yorlr Station Report 1S89. ... 



New York Station Report 



New York Station Report (capons) 

 Mass. State Station Report 1886. . . . 

 Mass. State Station Report 1890,... 



Pounrts. 



Per cent. 

 1.15 



.81 

 .66 



1.24 

 .79 



1.20 



Per cent. 



.92 

 .92 

 .82 

 .93 



.47 

 1.00 



Per cent. 

 .45 

 .32 



.£f. 

 .36 

 .18 

 .32 



e;xperiments in storing hen dung to prevent loss oe 



nitrogen. 



It has been a common practice for writers to recommend the 

 addition of certain materials to hen dung to prevent loss. The 

 N. Y. Station advises, "when the manure is not used when fresh, 

 it is better to mix it with dry earth, muck or plaster." The 

 Mass. State Station says : "The value of hen manure depends not 

 less on the care which is bestowed on its keeping than on the 

 kind of food the fowls consume. * * * A liberal use of 

 plaster, kieserite or of good loam is highly recommendable for 

 the absorption of ammonia. * * * A sandy soil is of little 

 use as an absorbant." 



To test the effect of chemicals upon the preservation of the 

 nitrogen of hen dung, the following experiment was made. The 

 roost droppings from 180 mature (20 months old) laying hens 

 were collected each morning, and the droppings for three nights 

 were treated as follows : — 



