Effect of the Mexican marigold (Tagetes minuta L.) on the control of nematodes associated with mulberry plantation

概要

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The Mexican marigold was examined to determine their nematode controlling effect when nematodes were immersed into the liquid from macerated root, stems, or leaves of the plant, or when they were planted in pot with mulberry seedling. Hatching of eggs of Meloidogyne sp.(tentatively identified as M. thamesi) after 10 days was highly decreased in the liquid from either part of the plant up to 0-7%, while approximately 70% hatched in the liquid from the macerated mulberry root or in the distilled water. It was further found that all of the newly hatched larvae were dead within 2 days. Paratylenchus sp., Xiphinema sp. and some free living nematode species were similarly dead. There was a tendency that growth of mulberry seedling with the Mexican marigold for 3 months was inferior to those without the Mexican marigold. No significant differences were found in the number of root galls as well as nematode population level in the soil between mulberry seedlings with and without marigold.
日本線虫学会の論文