138 



HATCH EXPEEIMENT STATION. 



[Jan, 



Orass mid Clover. — North Acre Soil Test, 1904 — Concluded. 



Plots. 



Fertilizers used. 



Nothing, 



Nitrate of soda, .... 

 Dissolved bone-black, 



Nothing, 



Muriate of potash, . 



Nitrate of soda and dissolved 



bone-black. 

 Nitrate of soda and muriate 



of potash. 

 Nothing, 



Dissolved bone-hlack and nni- 

 riate of potash. 



Nitrate of soda, dissolved bone- 

 black and muriate of potash. 



Plaster 



Nothing 



Yield per Acre, 



ROWEN. 



Unlimed 

 (Pounds) 



140 

 60 

 60 

 30 

 70 



210 

 50 

 40 

 80 



620 

 20 

 10 



Limed 



(Pounds), 



90 



120 



130 



780 



810 



.520 



.500 



2,560 



2,840 



SO 



240 



Gain or Loss per 



Acre, compared 



WITH Nothing Plots. 



Unlimed 

 (Pounds). 



—30 

 30 



37 



175 



12 



47 



595 



2 



Limed 

 (Pounds). 



557 

 495 

 112 



2,125 

 2,470 

 —225 



The results of this year resemble those of last year in one 

 particular, namely, the marked increase in the first crop 

 which follows the application of nitrate of soda ; but in one 

 important particular the results this year differ from those 

 of 1903 in a marked degi'ee, namely, in the very large in- 

 crease on the limed portion of those plots to which muriate 

 of potash has been annually applied. In commenting upon 

 the results of last year, I said : — 



Much evidence is afforded by a study of the relative propor- 

 tions of the different species on the different plots and on the 

 limed and unlimed portions of the several plots, that the soil 

 in some parts of this field is once more becoming acid. 



The principal ground on which this statement was based 

 was the comparative absence of clover, even on the limed 

 portion of such plots as had been supplied annually with 

 potash. This relative absence of clover last year was doubt- 

 less in part due to the unfavorable climatic conditions ; but 

 the widely different results of this year indicate that the lime 

 applied this season proved distinctly and largely beneficial. 



It is desired to call particular attention to the yield both 

 of hay and of rowen on the limed portion of Plot 9. This 



