158 



EXPERIMENT STATION. 



[Jan. 



Effect of Different Amounts of Nitrate of Soda. 



Season of 190S, Average Roots. 



Plot Number. 



Fresh Weight 

 (Grams). 



No nitrogen, 

 Low nitrogen, 

 Medium nitrogen. 

 High nitrogen, . 



1,40 

 31, 32, 33 

 34, 35, 36 

 37, 38, 39 



1,027 



947 



1,248 



1,127 



Season of 1910, Average Roots. 



No nitrogen, 

 Low nitrogen, 

 Medium nitrogen, 

 High nitrogen, . 



Season of 1911, Average Roots. 



Low nitrogen. 

 Medium nitrogen. 



31,32 

 34,35 



2,259 

 2,555 



It is noted that the medium application of nitrate of soda has 

 produced the heaviest average roots in each season. 



Effect of Phosphate and Potash Salts. 



Season of 1910, Average Roots. 



In spite of the large application of hone, acid phosphate and 

 muriate of potash at the time of setting the plants, the absence 



