THE EFFECT OF VARIOUS TREATMENTS ON THE YIELD OF TOMATOES IN RE-USED PERLITE
Steaming perlite before re-use gave a significant increase in yield even over new perlite.
All fungicides reduced the yields as compared to untreated perlite. Aaterra at 60 ppm gave quite a lot of toxicity symptoms. Filex gave satisfactory results at recommended rates. Alliette gave toxicity at recommended rates and suppressed the yields.