A network that helps people worldwide obtain rapid advice and information on crop protection, including the identification and management of plant pests.
PestNet is a network that helps people worldwide obtain rapid advice and information on crop protection, including the identification and management of plant pests. It started in 1999. Anyone with an interest in plant protection is welcome to join. PestNet is free and is moderated, ensuring that messages are confined to plant protection.
March 2005. Damping off of taro seedlings in Samoa. The seed is cleaned with tap water, and grown in sterile Jiffy-7 pots (treated with hot water). The seedlings are watered with distilled water. Two fungicides have been purchased, Bravo and Forschek, but the opinion of members is being sought before these are used. Comments were requested.
Usually, it’s a Fusarium that causes the problem, but Rhizoctonia may also be there. Treat the seed with Captan or Thiram. If not, try Mancozeb or even copper oxychloride. Bravo is likely to be effective, too.
Other suggestions were incorporating more organic matter into the mix, sterilising the mix in an autoclave, and treating the seeds with garlic extract or bleach (1%). It would be best to water the seedlings from the bottom, not the top of the pot.