81 



MANGOLDS, BARN FIELD, 1921 and 1922. 



Roots since 1856. Mangolds since 1876. 

 Produce per Acre. 



R.=^roots. L. —leaves. 



From 1904 onwards plot 4 N has been divided, 4a receiving Sulphate of Potash, Sulphate of 

 Magnesia. Sodium Chloride and Nitrate of Soda ; 46 receiving Calcium Chloride, 

 Potassium Nitrate and Calcium Nitrate. 



In 1922 the top dressings of Nitrate of Soda and Sulphate of Ammonia were omitted from 

 plots 4—8 on series N and A as the plant had failed. The plant on Series .\, N, O and plot 9, 

 was badly attacked by Atomaria (pigmy mangold beetle). 



