Efficacy of DMDS as a Soil Treatment against Meloidogyne chitwoodi in the Netherlands
2010
Charles P., | Heller, JJ
The root-knot nematode Meloidogyne chitwoodi is a quarantine nematode in the Netherlands which threatens seed potato production. Since 2001 a new product for soil disinfestation was developed on the basis of dimethyl disulphide (DMDS). DMDS is a substance naturally present in some plants especially in Allium. Preliminary results are encouraging from the point of efficacy against root-knot nematodes, root-lesion nematodes and cyst nematodes. In this situation DMDS could be an alternative to other soil disinfestation methods for Meloidogyne chitwoodi control. The efficacy of the fumigant DMDS as a soil treatment against root-knot nematode Meloidogyne chitwoodi was tested in 2 field trials with potatoes in 2007 and 2008 with the collaboration of Wageningen University PPO-AGV. After DMDS applications with dosages of 600 L/ha or more potato quality was nearly perfect with an index next to zero. Fumigation of soil with DMDS against the root-knot nematode Meloidogyne chitwoodi resulted in a higher potato yield, a better potato quality and low nematodes counts after growing potato.
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