348 



ANNUAL REPORT OF THE 



Off. Doc. 



separately, but showed but little effect from the liming, and the oats 

 and wheat crops following showed so little effect that the limed and 

 unlimed halves were not separately harvested; but when the clover 

 crop came around the effect of the liming was unmistakable. 



Some of the results of this work are shown in the table, which 

 gives the average unfertilized yield for all the land and the average 

 increase from a few of the treatments for 13 crops of corn, 11 of oats, 

 9 of wheat, 12 of clover and 8 of timothy which have been separately 

 harvested on the limed aud unlimed land since the beginning of 

 the liming. 



FERTILIZERS AND LIME ON CROPS GROWN IN ROTATION. 



Treatuipiit 



c 



Untreated yield per acre, 



Treated: Increase per acre 



Lime alone 



Phosphorus alone 



Phosphorus and lime 



Phosphorus and potassium, . 

 Phosphorus, potassium and 



lime, 



Phosphorus, potassium and nitrogen', 



Phosphorus, potassium, nitrogen and lime, 



Yard manure' 



Yard manure and lime, 



Lime over fertilizers. 



2,459 



641 



391 



1,242 



707 

 1,569 



634 

 1,972 

 2,2r3 

 3,371 



1,037 



'Nitrogen in dried Wood. 



= M,Tnure is applied only to corn and wheat. The chemical fertilizers are applied to com, oats 

 and wlieat. 



VALUE OF INCREASE, COST OF TREATMENT AND GAIN PER ACRE. 



B 



a 

 '3 



Lime alone. 



Phosphorus alone. 

 Phosphorus and lime. 



Phosphorus and potassium 



Phosphorus, potassium and nitrogen. 



Phosphorus, potassium and nitrogen 



Phosphorus, potassium, nitrogen and lime. 



Yard manure, 



Yard manure and lime. 



$S 41 



11 20 



12 77 



17 74 



'ii'n 



'Computing corn at half a dollar per bushel, oats at one-third of a dollar, wheat at on«- 

 dollar and hay at ten dollars per ton. 

 ■•Counting manure at two dollars per ton. 



The table shows that the lime alone has materially increased the 

 yield on the unfertilized land, the gain from lime alone being nearly 



