Vol. 7, Issue 2 (2019)
In vitro evaluation of certain antifungal plant extracts and biocontrol agents against Alternaria brassicae (Berk.) Sacc. Causing Alternaria leaf spot of cauliflower
Author(s): HT Valvi, JJ Kadam and VR Bangar
Abstract: Certain plant extracts and bioagents were evaluated under in vitro conditions against Alternaria brassicae (Berk.) Sacc. All plant extracts at 10 per cent concentration were found significantly effective in inhibiting growth of A. brassicae by poisoned food technique. Maximum per cent inhibition of A. brassicae over control was achieved due to fruit extract of Soap nut (Sapindus trifoliatus) (80.56 %) and it was followed by extracts of Garlic (Allium sativum), Nilgiri (Eucalyptus tereticornis), Neem (Azadirachta indica), Ashoka (Polyalthia longifolia), Adulsa (Justicia adhatoda) and Nirgudi (Vitex negundo) which showed 43.70, 37.04, 25.56, 21.85, 18.52 and 14.07 per cent inhibition of mycelial growth of A. brassicae, respectively over control. Three bioagents viz., Trichoderma harzianum, T. viride and Pseudomonas fluorescens were tested by dual culture method. In the present study, T. viride recorded maximum per cent inhibition of A. brassicae in both conditions when placed at periphery (72.46 %) and at centre (68.48 %) over control. This was followed by T. harzianum which showed 67.57 and 62.64 per cent inhibition of the test pathogen. Pseudomonas fluorescens showed 61.03 per cent inhibition of A. brassicae which when streaked centrally and 55.33 per cent when streaked on two sides of test pathogen.
Pages: 1774-1777 | 422 Views 45 Downloads
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How to cite this article:
HT Valvi, JJ Kadam, VR Bangar. In vitro evaluation of certain antifungal plant extracts and biocontrol agents against Alternaria brassicae (Berk.) Sacc. Causing Alternaria leaf spot of cauliflower. Int J Chem Stud 2019;7(2):1774-1777.
