Abstract
We evaluated fosthiazate, fenitrothion, and benomyl for the management of dagger nematodes (DNs, primarily Xiphinema brevicolle), in the root-ball soil of Japanese holly (Ilex crenata Thumb.). When root balls were drenched in diluted solutions of these agrochemicals, fenitrothion and benomyl were effective against DN populations but fosthiazate was not. Benomyl suppressed DN population recovery completely from 7 days to at least 60 days after treatment. Although fenitrothion suppressed DN populations completely for seven days after treatment, this duration of the suppressive effect was much shorter than that of benomyl, possibly because of the hatching of surviving eggs. The hatching of eggs that survived the fenitrothion treatment was hindered by post-treatment preservation at 5℃.
