Soil Fertility 



73 



Schutt, in a Canadian Department of Agriculture bulletin, 

 has reported a very instructive experiment to show the effect of 

 improper handling of 



DONT EXPOSE MANURE 

 TO WEATHER 



NEW YORK EXR 



4.000 LBS. HORSE MANURE WEATHERED 6 MONTHS 

 LOST 2Z70 LBS. IN WEIGHT 



LBS. 



i 4.000 



APRIL 

 TO 



SEPT. 



10.000 LBS. COW MANURE WEATHERED 6 MONTHS 

 LOST 4875 LBS. IN WEIGHT 



] 10.000 



manure. A quantity 

 of mixed horse and 

 cow manure was di- 

 vided into two lots. 

 One lot was exposed 

 to the weather, the 

 other was protected 

 in a bin under a shed. 

 The percentage of loss 

 in both was deter- 

 mined at the end of 

 six months and also 

 at the end of a year. 

 The percentages of 

 loss of organic matter, 

 nitrogen, phosphoric 

 acid, and potash are 

 shown in Table II. The figures are indeed significant and teach 

 a valuable lesson. The results of a similar experiment are 

 given in Fig. 24. 



TABLE II 1 



COMPARISON OF PROTECTED AND EXPOSED MANURE. 



OF Loss 



APRIL asm 



SEPT. 22N2 



LOSS tN PLANT FOO 



HORSE MANURE SR 5$?* ^ S 

 COW MANURE 401 197. 8? 



CORNELL BUL. 13 



HQW TO SAVE MANURE 

 DON'T EXPOSE TO WEATHER 

 HAVE A MANURE PIT 

 TIGHT FLOORS IN BARNS 

 SPREAD WHEN FRESH 



PLENTY OF, . 



FIG. 24. 



A lantern slide that tells a story of 

 waste on American farms. 



PERCENTAGES 



1 Schutt, M. A. Barnyard Manure, Canadian Dept. of Agriculture, Central Experi- 

 mental Farms. Bulletin 31. 



