54 



THE ROTHAMSTED EXPEEIMENTS. 



TABLE 16.— Mangel-Wurzel. Results for 6 years, 1878-83. 

 Means of plots 6 and 4. 



Series 1. 



Mineral 

 manure 

 alone. 



Series 5. 



Mineral 



and 

 rape-cake 



= 98 lb. 

 nitrogen. 



LEAF TO 1000 ROOT. 



197 



178 



177 



216 



152 



PER CENT. 



Dry matter 



Nitrogen in 

 dry 



Mineral mat- 

 ter in dry 



/ In root 

 \ In leaf 



/ In root 

 \In leaf i 



/ In root 

 \ In leaf 



Potash in 



*y {£ 



root 2 

 leaf 2 



Phosphoric / In root 2 

 acid in dry \ In leaf 2 



13.20 

 10.28 



1.20 



2.88 



20.08 



2.98 

 3.99 



0.63 

 0.61 



PER ACRE, LB. 



i Determinations made on mixed samples of plots 4, 5, and 6. 



2 These results relate to plot 6 only. 



3 Calculated from the determinations made on mixed samples of plots 4, 5, and 6. 



4 Calculated from the percentage results relating to plot 6 only. 



