Vol. 11, Issue 1 (2022)

Author(s):
Gande Jeevana Sai and Dr. Narola Pongener

Abstract:
Mandarin belonging to the family Rutaceae, are native to the tropical, sub- tropical regions of Asia. Blue mould of mandarin is one of the important post-harvest diseases caused by Penicillium expansum. Under in vitro conditions, GRAS salts (sodium carbonate, sodium bicarbonate, copper sulphate, Ammonium carbonate, Potassium carbonate, Sodium salicylate, Sodium sulfite) were evaluated against Penicillium expansum. Among GRAS salts tested Ammonium carbonate 15mM, 20mM and 25mM recorded maximum percent inhibition of 95.24, 98.68% and 96.90% respectively, followed by Sodium carbonate 15mM, 20mM and 25mM recorded percent inhibition of 85.41, 90.97 and 94.82% respectively. GRAS salts found effective under in vitro were evaluated under in vivo conditions. In vivo results revealed that Ammonium carbonate 25mM was efficient with 59.25 disease incidence and 66.07 disease severity which was followed by Ammonium carbonate 20mM with 62.02 disease incidence and 67.61 disease severity.