132 EXPERIMENTS UPON ROOT-CROPS 



Practical Conclusions 



1. As the value of sugar-beet depends so much on its 

 purity, it should be grown rather on land in high condition from 

 previous manming than enriched by the direct application of 

 manures. If farmyard manure has not been used for the 

 previous crop a fair dressing should be given for sugar-beet, 

 but it should be ploughed in during the autumn before sowing. 



'2. Just before sowing the seed, 3 cwt. of superphosphate,, 

 1 cwt. sulphate of potash, and 1 cwt. of sulphate of ammonia 

 per acre, should be appHed and harrowed in. Nitrate of soda 

 is not so desirable a manure for sugar-beet as it is for 

 mangels. 



3. The high quality of the crop will much depend on the 

 thorough and deep cultivation of the soil before sowing, and on 

 planting very closely as compared with mangels. 



References 



"Agricultural Chemistry, Turnip Culture." Jour. lioj/. Ag. Sac, 8 (1847), 



494. Roihamslcd Memoirs, Vol. I., No. 2. 

 " Results of Experiments at Rothamsted on the Growth of Root-crop,s for 

 many years in succession on the same land." AgriciiHiiral Sludents" 

 Gazette, New Series, Vol. III., Part V., 1887. Rothamsted Memoirs, VoL 

 VI., No. 12. 

 " Results of Experiments at Rothamsted on the Growth of Potatoes for 

 twelve years in succession on the same land." Agricultural Students' 

 Gazette, New Series, Vol. IV., Part II., 1888. Rothamsted Memoirs, VoL 

 VI., No. 13. 

 " The Rothamsted Experiments : being an account of some of the Results 

 of the Agricultural Investigations conducted at Rothamsted, Trans. 

 Highland and Agricultural Society of Scotland, Fifth Series, 7 (1895), 

 19-67. 

 " The Growth of Sugar-Beet, and the Manufacture of Sugar in the United 

 Kingdom." Jour. Roy. Ag. Soc, 59 (1898), 344-370. Rothamsted 

 Memoirs, Yo\. VII., No.' 11. 

 " Experiments at Rothamsted on the Changes in the Composition of Mangels 

 during Storage," by N. H. J. Miller. Jour. Roy. Ag. Soc, 61 (1900), 

 57; and 63 (1902), 135. 

 "The Continuous Growth of Mangels for twenty-seven, years on the .same 

 land. Barn Field, Rothamsted," by A. D. Hall. Jour. Roy. Ag. Soc, 63 

 (1902), 27-59. 



