A Dutch contribution to knowledge on phytosanitary risk and host status of various crops for Meloidogyne chitwoodi Golden et al., 1980 and M. fallax Karssen, 1996: an overview

Abstract

The results of experiments, performed in The Netherlands during the last decade, on the host range of Meloidogyne chitwoodi and M. fallax are presented and discussed. Opinions are expressed on the host status of the tested plants and the phytosanitary status of the commercial product (defined as that part of the plant that enters trade) separately, as interest for both categories may differ. Information for each category is given for a variety of plants such as vegetables, arable crops, flowering bulbs and plants, and ornamental plants and trees. Data obtained from glasshouse experiments are given in a separate table. Many plants are a good host for one or both nematode species, and the commercial product, such as some bulbs and potatoes, might form a phytosanitary risk as a carrier of the juveniles inside the product, this risk being increased when that commercial product has roots.

Commodity risk assessment of Acer spp. plants from New Zealand

“…Root-knot nematodes can move a few metres annually in the soil (den Nijs et al, 2004) and can survive without the host in the soil for 140 or more days depending on temperature (Kok and Heij, 2004).…”

“…Among the weeds present in the nurseries, there are at least four host species (Lolium perenne, Foeniculum vulgare, Solanum nigrum, Trifolium spp.) of M. fallax (CABI, online;den Nijs et al, 2004;MacLeod et al, 2012;Mackesy et al, 2013). The production fields are not sampled for nematodes before a new crop is planted (Dossier Section 9.1).…”

“…Effect on the pest Evaluation and uncertainties 1 Soil treatment Yes White mustard (Sinapis alba) was reported a host of M. fallax (Hejibroek, 1998), having a high multiplication factor in experiments (den Nijs et al, 2004). The fallow period with mustard would allow the nematode to have at least one generation.…”

“…Acer palmatum is reported as a host plant for M. fallax in field experiments (den Nijs et al, 2004).…”

Integrated Nematode Management

“…Meloidogyne chitwoodi and M. fallax are closely related species and have a broad host range of monocot as well as dicotyl crops, including several major cash crops, cover crops and weeds (Den Nijs et al, 2004;Rich et al 2009). When planning a crop rotation it is also important to be aware of the difference between the host range of M. chitwoodi and M. fallax.…”