Management of stem rot (Rhizoctonia solani) of carnation by fungicides.

摘要

For the management of stem rot of carnation (Dianthus caryophyllus) caused by Rhizoctonia solani, 10 fungicides viz., Antracol (propineb 75 WP, 0.2%), Bavistin (carbendazim 50 WP, 0.2%), Contaf (hexaconazole 5 EC, 0.1%), Kavach (chlorothalonil 75 WP, 0.2%), SAAF (65 WP, 0.2% - mancozeb 63%+carbendazim 12%), Roko (thiophanate methyl 70 WP, 0.2%), Dithane M-45 (mancozeb75 WP, 0.2%), Thiram (thiram 75 DS, 0.2%), Avtar (75 WP, 0.2%-zineb 68%+hexaconazole 4%) and Captan (captan 50 WP, 0.1%) were evaluated in vitro and then in field condition on a susceptible cultivar Rubesco during 2009 and 2010. In field the fungicides were sprayed at 15 d-intervals after planting of rooted cuttings of carnation. Among the fungicides tested under field conditions, thiram and Avtar were found most effective (<10% disease incidence compared to 40% in control).