76 



HATCH EXPERIMENT STATION. 



[Jan. 



Plots. 



Roots. 



Tope. 



Plot 0, 

 Plot 1, 

 Plot 2, 

 Plot 3, 

 Plot 4, 

 Plot 5, 

 Plot 6, 



580.0 

 702.0 

 753.6 

 735.0 

 938.0 

 655.0 

 690.0 



185 

 348 

 315 

 315 

 335 

 260 

 215 



The calculated averages in pounds are given in the follow- 



ing table 



The fertilizers are shown to have been moderately bene- 

 ficial, there is not much difference between the two potash 

 salts, and the sulphate of ammonia gives a much better 

 crop than either of the nitrogen fertilizers. This is not 

 strange, in view of these facts : (1) the plots to which this 

 had been applied had produced but very small first crops, 

 while the others had yielded heavily ; and (2) that the tur- 

 nips made their growth so late in the season that the in- 

 jurious compounds often formed by this salt had become 

 dissipated, or destroyed by further chemical changes. 



EXPEKIMENTS IN MANURING GRASS LANDS. 



The system of using wood ashes-, ground bone and mu- 

 riate of potash, and manure in rotation upon grass land has 

 been continued. We have three large plots (between two 

 and three acres each) under this treatment. Under this 

 system each plot receives wood ashes at the rate of 1 ton 



