Sugar Beet Investigations. 

 Analyses of the Dry or Water-Free Samples. 



237 



licaves 



Crowns 



Crownless beets 



Nitrogen. 

 Per cent. 



N. 



2.89 

 2.13 

 1.38 



Potash. 



Per cent. 



K„0. 



4.88 



2.21 

 1.77 



Phosphoric 



acid. 



Per cent. 



P.O5 



51 

 0.59 

 0.55 



Calcium 

 oxide. 



Per c nt. 

 CaO. 



1.86 

 27 

 0.15 



Ash. 

 Per cent. 



19.31 

 6.68 

 4.14 



These analyses when calculated to the fresh or green sa7nples at time 

 of pulling are as follows : 



Any one of these percentages when multiphed by 20 will give the 

 number of pounds of that substance in a ton of the material taken. 

 Thus green leaves analyzed 0.64 per cent, nitrogen : then 20 x 0.64 = 

 12.8 pounds of nitrogen in one ton of green or fresh leaves. The 

 amount of the other substances in a ton may be obtained from the 

 analyses in a similar manner. 



In order to approach the question of how much plant food a crop 

 of sugar beets takes up per acre, it is of great importance to know the 

 relative proportion of leaves, crowns and crownless beets by weight in 

 the crop grown. 



The following table gives the weights of these parts in 24 samples 

 weighed at time of harvesting : 



