Vol. 7, Issue 6 (2019)
In vitro evaluation of different fungicides against Alternaria macrospora causing leaf spot of cotton
Author(s): Indira SA, Sreedevi SC, Yenjerappa ST and Shivaleela
Abstract: A study has been conducted at Department of Plant Pathology, University of Agricultural Sciences Raichur on evaluation of new molecules of fungicides against Alternaria macrospora, causing leaf spot of cotton. Seven systemic, eight non systemic and combi fungicides, respectively were evaluated against A. macrospora under in vitro by poison food technique. Among the systemic fungicides evaluated, difenconazole, hexaconazole, propiconazole and tebuconazole at all the concentrations viz., 0.05, 0.1 and 0.2 per cent recorded complete inhibition (100%) of mycelial growth of A. macrospora. Among the non systemic fungicides, mancozeb was found most effective and recorded significantly highest mean mycelial inhibition (90.10%). Among the combi fungicides evaluated, trifloxystrobin 25% + tebuconazole 50% EC and captan 70% + hexaconazole 5% WP were found most effective and recorded complete inhibition of mycelial growth of A. macrospora at all the three concentrations (0.1, 0.2 and 0.3%).
Pages: 444-447 | 314 Views 47 Downloads
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How to cite this article:
Indira SA, Sreedevi SC, Yenjerappa ST, Shivaleela. In vitro evaluation of different fungicides against Alternaria macrospora causing leaf spot of cotton. Int J Chem Stud 2019;7(6):444-447.
