152 



MAINE .-sTATE COLLEGE 



Experiment of I. 0. Winslow, St. Albans. 



Crop, com ; soil, gravelly loam ; plots, one-thirtieth of an 

 acre instead of one-twentieth ; crop weighed in the ear with the 

 husks on. 



Fertilizers applied. 



Dissolved bone-black • 

 Muriate of potash 



Nitrate of soda 



Dissolved bone-black 

 Muriate of potash. • . . 

 Dissolved bone-black. 



Nitrate of soda 



Dissolved bone-black. 

 Muriate of potash 



Nitrate of soda 



Nitrate of soda 



Muriate of potash 

 No manure 



z X 

 *2 «T 



750 



150 



225 



750 i 



150/ 



7501 



225 , 



750 



1501 



225 / 



225 



150 



> — 



lbs. 



ISO 



175 



93 



71 



202 



121 



194 | la 



77 ' Sa 



£» 



lbs. 

 240 



245 



156 

 135 



221 



69 

 92 

 68 



5a 



lbs. 



210 



210 



130 

 103 



212 



95 



143 



73 



Table showing the yield of corn on the ear, in the husk, on 

 manured plots over unmanured plots, together with the cost of 

 fertilizers at wholesale prices quoted above. 



Increase of crop per 

 Plots. acre due to fer- 

 tilizers. 



Cost of fertilizers 

 per acre. 





2055 lbs. 



2055 •• 

 855 " 

 450 " 



2085 " 

 229 ■• 

 S50 •' 



816.50 

 12.00 





3 and 3a 



13.50 





9-00 

 7.50 





4-50 





3.00 







In this experiment nitrate of soda and muriate of potash gave 

 not only the largest yield but produced the increase in crop at the 

 least expense for fertilizers. Muriate of potash and dissolved 

 bone black gave the same yield as muriate of potash, nitrate of 

 soda and dissolved bone black. 



These experiments demonstrate that commercial fertilizers may 

 be used to great advantage by all of the experimenters. They 



