THE NUTRITION OF TOMATO CELL TRANSPLANTS
In the second experiment a nutrient feed of moderate concentration was applied at frequencies of feeding of every 1,2,3,4 or 5 days. Shoot growth was related to the frequency of feeding, although there was little difference between feeding at 3,4 or 5 day intervals. In both experiments a close relationship was found between the relative growth rate of the shoot and its nitrogen content. This relationship held providing liquid feeding maintained nitrogen levels in the shoot at low levels. Growth ceased when the nitrogen content fell to 0.8–1.0% on a dry matter basis.