. Results
The results of the nutrient spray interval experiment showed
that in the NSB system, the highest growth of potato shoots
occurred when the nutrient medium was sprayed at 1 h intervals
(Fig. 2). Compared to shorter (½ h) and longer (2–4 h) spray intervals, the 1hr interval produced the highest number and greatest
length of potato shoots (3.47 and 8.99 cm, respectively). Shorter
intervals produced hyperhydrated shoots (with the glassy appearance of water-logged tissue, short nodes and abnormal leaves)
whereas longer intervals resulted in reduced shoot growth.
Nutrient spray interval in the NSB system had a pronounced
effect on potato microtuberization (Fig. 3). Among the five nutrient