A CHEMICAL STUDY OF THE ASPARAGUS PLANT. 277 



These analyses were made by Messrs. E. B. Holland and R. D. Mac- 

 laurin before the field was planted in 1907. It will be readily seen that the 

 samples show a striking uniformity in composition. 



The manner of fertilizing the experiment plots has been described in a 

 previous paper, ^ but for the sake of clearness the scheme is here briefly 

 outlined. 



Effect of Fertilizers on Asparagus Roots. 

 The roots of 1908 represented only the plots that had received different 

 applications of nitrate of soda; the samples of 1910 included these plots 

 and the plots to which different quantities of acid phosphate and muriate 

 of potash were applied. The weights of the roots are given by individuals 

 and by plots in the following table : — • 



1 Ann. Kept., Mass. Agr. Expt. Sta. 25, p. 156. 



