Evaluation of Fungicides against Fusarium pallidoroseum (Cooke) Sacc. causing Wilt of Coriander In vitro

Abstract

Coriander (Coriandrum sativum L.) is one of the most important spice crop known to affect by various diseases. Among them, coriander wilt causes serious problems and it is also caused by a newly reported causal agent Fusarium pallidoroseum (Cooke) Sacc. Hence, F. pallidoroseum being new pathogen on coriander, a laboratory experiment was conducted to study the efficacy of different non-systemic fungicides at 1000, 1500 and 2000 ppm; systemic fungicides at 100, 250 and 500 ppm and ready-mix fungicides at 500, 750 and 1000 ppm concentrations against F. pallidoroseum using Poisoned Food Technique. The results revealed that, among non-systemic fungicides, copper oxychloride 50 WP at all concentration found significantly superior with cent per cent mycelial growth inhibition. In contrast, propineb 70 WP found least effective at 1000 ppm concentration (2.71%). Among systemic fungicides, flusilazole 40 EC and thiophanate methyl 70 WP each at 500 ppm concentration gave cent per cent mycelial growth inhibition of F. pallidoroseum. While, kresoxim methyl 44.3 SC found least effective at 100 and 250 ppm concentration (9.74 and 12.95%). Among ready-mix fungicides, prochloraz 5.7 + tebuconazole 1.4 ES at all concentration and azoxystrobin 18.2 + difenoconazole 11.4 SC at 1000 ppm concentration found effective and showed cent per cent mycelial growth inhibition of F. pallidoroseum. While, fluxapyroxad 25 + pyraclostrobin 25 SC at 500 ppm found least effective (18.34%).