22 



that, as a rule, we recover in the increase in the crop but a small 

 part of the plant food applied in the fertilizers used. One exception 

 is to be noted ; in the increase due to the use of "complete fertilizer" 

 we recover as much nitrogen as is used, except in two cases, viz. : 

 Hadley and Westfield. In view of the small increase generally 

 caused by the addition of nitrate to phosphate and potash, however, 

 we must conclude that the soil furnished much of this nitrogen. 



The chief conclusions from the study of the results of this experi- 

 ment are : — 



1 . Potash seems to have done very little good. 



2. Nitrogen, though more beneficial than potash, seems to be 

 required in but small quantity. 



3. Phosphoric acid should be abundantly supplied together with 

 smaller proportions of potash and nitrogen. 



4. The differences apparently caused by the use of plaster 

 and lime are too small to be significant, although plaster seems to 

 have been slightly beneficial and its use seems to have paid. 



MARBLEHEAD. 



SOIL TEST VTITH FERTILIZERS FOR CORN. 



By Wm. S. Phillips, Jr. 



FERTILIZERS. 



Nothing, 

 Nitrate of Soda, 

 Dissolved Bone-black, 

 Nothing, 

 Muriate of Potash, 



f Nitrate of Soda, 



\ Dissolved Bone black, 

 / Nitrate of Soda, 

 \ Muriate of Potash, 

 Nothing. 



f Dissolved Bone black, 



{ Muriate of Potash, 

 Nitrate of Soda, 

 Dissolved Bone-black, 

 Muriate of Potash , 

 Land Plaster, 

 Nothing, 



Barnyard Manure, 

 Lime, 

 Nothing, 



Gain or loss compared 



with 



Nothing Plots 



per acre. 



Shelled Coi-n i 



bushels. 



7.5 

 5.1 



14.4 

 15.7 



15.7 



19.1 



.7 



1040 

 180 



2190 

 1070 



1020 



-380 



2010 

 110 



