Vol. 7, Issue 1 (2019)
Evaluations of fungicides on Phytophthora palmivora incitant of bud rot disease in coconut under in vitro
Author(s): B Neeraja, G Ramanandam, NBV Chalapathi Rao and E Padma
Abstract: Bud rot disease in coconut is a debilitating disease and is fatal if timely control measures are not taken up. Phytophthora palmivora Butl., is the casual agent of the disease. In this study effect of different chemicals viz., Azoxystrobin 23% EC, Kresoxim methyl 44.3% SC, Pyroclostrobin + Metiram 60% WG, Fenamidone + Mancozeb 60% WG, Bordeaux mixture 1%, Copper oxychloride 50% WP, Mancozeb 75% WP, Metalaxyl + Mancozeb, 68% WP and Iprovalicarb + Propineb 6675 WP 5.5% + 61.25% W/W were assessed against P. palmivora under in vitro conditions. Among the chemicals, Bordeaux mixture 1%, Copper oxychloride 50% WP showed complete inhibition of the mycelia growth of the pathogen after eight days inoculation under in vitro screening. Pyroclostrobin + Metiram 60% WG showed 76.67 percent inhibition of mycelial growth followed by Kresoxim methyl 44.3% SC (66.33%) compared with control.
Fig. 1: Mean per cent mycelial growth inhibition of P. palmivora
Fig. 2: In vitro evaluation of latest fungicides at recommended concentrations against P. palmivora
Pages: 208-210 | 653 Views 119 Downloads
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How to cite this article:
B Neeraja, G Ramanandam, NBV Chalapathi Rao, E Padma. Evaluations of fungicides on Phytophthora palmivora incitant of bud rot disease in coconut under in vitro . Int J Chem Stud 2019;7(1):208-210.
