104 



RESULTS WITH SUGAR BEET 



crop of French or German sugar-beet does not exceed n to 12 

 tons per acre. On a well managed farm it is possible at the 

 present day to obtain 14 to 16 tons of good roots per acre, 

 containing 14-15 per cent of sugar. The richness of the crop 

 in sugar is considerably affected by the character of the 

 season ; maturity is essential to high quality. 



The only systematic experiments made in this country 

 upon the influence of manures on the production of sugar-beet 

 are those conducted at Rothamsted (Jour. Roy. Agri. Soc. 

 1898, 344). In Table XXXIV will be found the average 

 produce of roots and sugar, obtained on some of the plots 

 during three years, 1871-73. The superphosphate was applied 

 at the rate of 3^ cwts. per acre. Sulphate of potash was 

 applied at the rate of 300 Ibs. per acre. Plot 6, besides potash, 

 received the sulphates of soda and magnesia. The whole of the 

 manures, including the ammonia salts, were applied before 

 the land was ridged and the seed sown. 



TABLE XXXIV. 



PRODUCE OF BEETROOTS AND SUGAR BY VARIOUS 



MANURES AT ROTHAMSTED, AVERAGE OF 



THREE YEARS, 1871-7-3. 



The use of 400 Ibs. of ammonia salts is seen to have given 



