field experiments with fertilizers. 

 Table 66. 



129 



SPECIAL NITROGEN EXPERIMENTS ON WHITE FLINT CORN 



(SERIES F). 



Weight and cost of fertilizers per acre, total crop, and increase of 

 crop over that of nothing plots. 



THE AMOUNTS OF NITROGEN IN THE FERTILIZER AND THE 

 TOTAL YIELDS OF CROP. 



Tables 65 and 66 give the weight and cost of fertihzer per 

 acre as used on the different plots, the yields of corn and stover 

 per section and the calculated yields per acre, and the increase 

 in yield of grain on the fertilized sections over the average of the 

 yields on the two sections without fertilizer. Table 65 gives 

 the results from sections of series A, and Table 66 those from 

 sections of series F. The yields per section there given are the 

 weights of the crops as determined; the yields per acre are cal- 

 culated from these and the size of the sections. The last col- 

 umn of the table shows the effects of the different fertilizers ou 



