The beet were transferred to the plots on 8.5.58, 22.5.59, 12.8.60 respectively. 

 Applications of water insufficient to return the plots to field capacity shown in brackets. 

 * On 3.9 and 8.9.58. 



applied to all plots and 1-5 cwt/acre of nitro-chalk (21% N) to half of each 

 plot. Seed was sown in soil blocks in latejuly and seedlings were transplanted 

 22 days later. Treatments A and C were the same as in Exps. i and 2. The 

 B and C treatments started simultaneously in mid-September. In the B 

 treatments the drought was broken in early November but half the plots 

 (BH) were then held at field capacity, while the others (BL) received only 

 I in. of water and were not irrigated again. 



Samphng was arranged so that the residual effects of the differential 

 nitrogen treatment apphed to the barley could be estimated. The number of 

 plants per sample was decreased to six to provide four pairs of samples per 



plot. 



The four water treatments were repHcated in three randomised blocks. 



WEATHER 

 Weather conditions differed during the three experiments. The total daily 

 radiation (Kipp radiometer), hours of sunshine and evaporation from the 

 standard i/iooo acre water surface showed similar time changes and only 

 data on total daily radiation will be presented (Table 2). The radiometer 



