agricultural experiment station. 

 Average. 



77 



No fertilizer 



Dissolved bone black, containing phosphoric acid, 



Dissdlved bone black, 



5 Dissd 

 I Muri 



ate of potash. 



Dissolved bone black, 

 ' Muriate of potash, 

 Sulphate of ammonia. 



Containing phosphoric acid and 

 potash. 



Containing phosphoric acid, pot- 

 ash and nitrogen. 



Fine ground bone, containing phosphoric acid and nitrogen. 



2 a 



>H So 



lbs. 

 24,5 



24.5 



34.5 



45.5 

 30.0 



I "3 



|x fcO 



bush. 

 10.1 



10.2 

 14.3 



18,9 

 12,5 



Experiment of J. A. Tolman, Rockland. 



Soil gravellj' loam, had been cropped for ten years without 

 manure. 



Crop, barley, sown for fodder. 



Plot. 



Fertilizer Applied. 



No fertilizer 



Dissolved bone black . 



5 Dissol 

 I Muria 



Dissolved bone black, 

 iriate of potash. ... 



Dissolved bone black . 

 Muriate of potash... 

 Sulphate of ammonia. 



Fine ground bone. . . . 



So fertilizer 



Dissolved bone black . 



Dissolved bone black . 

 Muriate of potash.... 



10 



f Dissolved bone black. 

 ) M uriate of potash . . . . 

 (_ sulphate of ammonia. 



Fine ground bone 



.1^ M O 



s s g 



<!fe P. 



lbs. 



400 



400 1 

 100$ 



400 > 

 100 S- 

 100) 



400 



400 



400: 

 100 



400 

 100 

 100 



400 



lbs. 

 136 



99 

 81 



129 



110 

 90 

 116 



108 



114 



86 





lbs. 

 2720 



1989 

 1620 



2580 



2200 

 1800 

 2320 



2160 



2280 

 1720 



