Efficiency of Ammonium Acetate Magnesium Carbonate and Gypsum to Inhibit Fungal Growth in Sweet Tamarind Pods

Abstract

This research aims to study the efficiency of ammonium acetate (NH₄CH₃CO₂), magnesium carbonate (MgCO₃) and gypsum (CaSO₄·2H₂O) at different concentrations to inhibit fungal growth on sweet tamarind pods in the laboratory.  Prakaithong (Ta Pae) variety was collected to study sweet tamarind pods from the sweet tamarind plot of the sweet tamarind farmer group, Village No. 8, Rawing Subdistrict, Mueang Phetchabun District, Phetchabun Province.  The experimental results found that fungus in sweet tamarind pods using the tissue transplanting technique was grown on a PDA medium. A total of 13 fungal isolates could be isolated for testing the effectiveness of ammonium acetate, magnesium carbonate and gypsum at different concentrations in inhibiting fungal growth. of tamarind pods. This study investigated that ammonium acetate at a concentration of 3 % (w/v) could inhibit the fungal growth of 6 isolates of tamarind pods by up to 100 percent, It has the same inhibitory as the fungicide captan at 2.5 ml/l mixed in PDA, while gypsum resulted in the growth of some fungi that soared when compared with the control that did not add the substance to inhibit fungal growth.