264 



H. POLSTER 



Assimilation 



6- 



fM 

 O 



u 



2- 



unwatered 29.6.1957. 

 2.7.\957. 

 3.7.1957. 



—\ 1 1 1 — ■ — I 1 1 1 1 I I I 1 



8 lO 12 14 16 18 20h 



Assimilation 



6- 



o> 4- 



O 

 O 



unwatered 29 6.1957 



watered 2.7.1957 



3.7.1957 



— 1 1 1 1 1 



16 18 20h 



-| 1 1 1 1 1 1 1 r- 



6 8 lO 12 14 



Fig. 6. Assimilation in crown tops of the south border on different days, in dry soil 



and after watering. S as in Fig. 3. 



