Author(s):

DB Kolhe, RA Chavan, PA Sahane, RG Brahmankar and VB Udar

Abstract: Present research work entitled “Studies on In vitro efficacy of plant extracts and chemicals against Aspergillus rot of sapota” was conducted at the Department of Plant Pathology, College of Agriculture, Latur (VNMKV, Parbhani), M.S. during the year 2019-20. The present investigation was carried out to evaluate in vitro efficacy of different chemicals viz., Boric acid, Calcium chloride, Sodium bicarbonate and Potassium chloride and plant extracts viz., Ginger, Turmeric, Neem, Garlic, Nilgiri, Onion and Tulsi against Aspergillus niger causing typical sapota rot. All plant extracts were effective against Aspergillus niger, however least mycelial growth was recorded with per cent inhibition with treatment of Garlic clove extract (100%) followed by Ginger rhizome extract (90.37%), Turmeric (89.55%), Neem leaf extract (88.33%), Nilgiri oil (85.26%). Least mycelial inhibition was recorded with Onion bulb extract (77.60%) and Tulsi leaf extract (17.96%). All the tested chemicals were found fungistatic against Aspergillus niger. Calcium chloride and Boric acid at concentration 0.5, 1 & 2% were found most effective in inhibiting the mycelial growth of Aspergillus niger, while least inhibition of these fungi was observed with Sodium bicarbonate and Potassium chloride.

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