rlh 



1,200 



1,000 



500 



600 



400 



200 



Hh 



11 



Figure 31. 



12 



13 



14 



15 



16 



17 



Days After Transfer 



Experiment 5. Effect of aeration on nitrate 

 uptake from nitrate-containing complete solutions 

 during the 11- to 17-day period after transfer. 



62 



