138 



MAINE STATE COLLEGE 



Mr. William Downes' Experiment at Sebec. 



DESCRIPTION OF SOIL. 



Corn was planted on old sod land that had received no manure 

 for six 3'ears. The ground was plowed May 22nd six inches deep ; 

 corn planted May 25th. The result is shown in the following 

 table : 









Yield per acre of 





J2 

 O 



O s 



S 









C 



-— o 



so 



r^ 







Amount 



s 





o 



No. of Plot. 



Name of fertilizer. 



per acre. 



o 





b . 









iH, 



'^« 



n 









o 



a'j' 



o 









O 



W'/3 



o 







lbs. 



lbs. 



bush. 



lbs. 





Acid S. C. Eock. 



5001 









1. 



Sulphate of ammonia. 

 Muriate of potash. 

 Une ground S. C. Rock. 



150 [ 



100 J 



1000) 



4660 



06.6 



4610 



2. 



Sulpliate of ammonia. 

 Muriate of potash. 

 Caribbean Sea Guano. 



150 y 

 100 J 

 725) 



2630 



37.6 



2730 



3. 



Sulphate of ammonia. 

 Muriate of potash. 



150 y 



100 j 



2660 



38.0 



2370 



4. 



sulphate of ammonia. 

 Muriate of potash. 



150 \ 

 100/ 



1260 



18.0 



2120 



5. 



No fertilizer. 

 Acid S. C. Rock. 



500) 



1130 



16.1 



1450 



la. 



Sulphate of ammonia. 

 Muriate of potash. 

 Fine ground S. C. Rock. 



150 y 



100 J 

 1000 ' 



3720 



53.1 



4640 



2a. 



Sulphate of ammonia. 

 Muriate of potash. 

 Caribbean Sea Guano. 



150 y 



100 j 

 725) 



2320 



33.1 



3410 



3a. 



Sulphate of ammonia. 

 Muriate of potash. 



150 y 



100 J 



2410 



34.4 



3340 



4a. 



Sulphate of ammonia. 

 Muriate of potash. 



150 \ 

 100/ 



1220 



17.1 



1570 



5a. 



No fertilizer. 





1570 



22.4 



1910 



* Calculated into bushels of shelled corn by dividing the weight of corn on 

 cob by 70. 



