328 



THE TURNIP CROP. 



to the acre, would abstract from the soil about 500 Ibs. 

 of the above ingredients, in something like the following 

 proportions, which, of course, must be returned to the soil 

 before it can regain its normal fertility or condition : 



Potash, 145 Ibs. 



Soda 28 



Lime, 116 



Magnesia, 16 ,, 



Phosphoric acid, 50 Ibs. 



Sulphuric acid, 65 , , 



Chlorine, 80 , } 



"500 



The organic composition of the turnip has been inves- 

 tigated by Dr. Voelcker, from whose careful and reliable 

 analyses we now know that it consists of 



One great object in turnip cultivation is, of course, to 

 obtain not only quantity but quality of produce, and it 

 must be obvious to all, that those bulbs containing the 



1 Way and Ogston the mean results of six specimens of different varieties, 

 Ski r vine's Swede, Dale's Hybrid, Green-top White. 



2 Way and Ogston. 3 Fromberg. 



