University of California, Riverside

Department of Nematology

Antoon Ploeg's Faculty Page

Antoon Ploeg Antoon T. Ploeg
Assoc. Nematologist and Assoc. Cooperative Extension Nematologist
2240A Spieth Hall

 Lab Website

Research Areas:

The main theme in my research and extension program is on the development and evaluation of sustainable management practices for nematode control. This includes research on the use of cover crops, soil solarization, biofumigation, bio-rational nematicides, and nematode resistant rootstocks. Where information is not available, we also try to establish damage thresholds and determine the host status of specific crops for selected nematode species. A more basic aspect of my research program deals with the apparent increase in tolerance of plants to nematodes as the plants get older. For example, we have clearly demonstrated that a short delay in the exposure of plants to nematodes, results in much improved plant growth compared to plants attacked by nematodes immediately after seed germination. At the same time, delaying nematode access to the plants resulted in much higher nematode levels at harvest. The underlying mechanism and the practical implications of this phenomenon are being studied.

As an extension nematologist, I try to answer nematode related questions from growers, farm advisors and the general public, and to keep my clientele updated on the latest developments in plant nematology through publications in newsletters and magazines and in talks. For demonstration and educational purposes we are continually adding to a slide collection on nematode symptoms and are developing short videos on plant nematodes.



Roubtsova, T., J.A. López-Pérez, S. Edwards, and A.T. Ploeg. (2007). Effect of broccoli (Brassica oleracea) tissue, incorporated at different depths in a soil column, on Meloidogyne incognita. Journal of Nematology 39:111-117.

Pérez, A., Strange, M. L., Kaloshian, I., Ploeg, A.T. (2006). Differential response of Mi gene-resistant tomato rootstocks to root-knot nematodes (Meloidogyne incognita). Crop Protection 25(2006) 382-388.

López-Pérez, J.A., T. Roubtsova, and A.T. Ploeg. (2005). Effect of three plant residues and chicken manure used as biofumigants at three temperatures on Meloidogyne incognita infestation of tomato in greenhouse experiments. Journal of Nematology 37:489-494.

Sigüenza, C., Schochow, M., Turini, T., and Ploeg, A.T. (2005). Use of Cucumis metuliferus as a Rootstock for Melon to Manage Meloidogyne incognita. Journal of Nematology 37(3):276-280.

Al-Banna, L., A.T. Ploeg, V.M. Williamson, and I. Kaloshian. (2004). Discrimination of six Pratylenchus species using PCR and species-specific primers. Journal of Nematology 36:142-146.

Schochow, M., Tjosvold, S.A., and Ploeg, A.T. (2004). Host status of Lisianthus 'Mariachi Lime Green' for three species of root-knot nematodes. HortScience 39:120-123.

Ploeg, A.T. (2002). Effect of selected marigold varieties on root-knot nematodes and tomato and melon yields. Plant Disease 86:505-508.

Ploeg, A.T., and Stapleton, J.J. (2001). Glasshouse studies on the effects of time, temperature and amendment of soil with broccoli plant residues on the infestation of melon plants by Meloidogyne incognita and M. javanica. Nematology:3:855-861.

Huang, X., and Ploeg, A.T. (2001). Effect of plant age and Longidorus africanus on the growth of lettuce and carrot. Journal of Nematology 33:137-141.

Huang, X., and Ploeg, A.T. (2001). Effect of soil temperature on Longidorus africanus damage to carrot and lettuce seedlings. Nematropica 31:87-93.

Ploeg, A.T. and M. S. Phillips. (2001). Damage to melon (Cucumis melo L.) cv. Durango by Meloidogyne incognita in Southern California. Nematology 3:151-157.

Ploeg, A.T. (2000). Effects of amending soil with Tagetes patula cv. Single Gold on Meloidogyne incognita infestation of tomato. Nematology 2:489-493.

Huang, X., and Ploeg, A.T. (2001). Feeding of Longidorus africanus on sugarbeet (Beta vulgaris) and rye grass (Lolium perenne) seedlings. Nematology 3:85-88.

Ploeg, A.T., and P.C. Maris. (1999). Effects of temperature on the duration of the life cycle of a Meloidogyne incognita population. Nematology 1:389-393.

Ploeg, A.T. (1999). The horizontal and vertical distribution of Longidorus africanus in a Bermuda grass field in Imperial Valley, Southern California. Journal of Nematology (Supplement) 30:592-598.

Ploeg, A.T. (1999). Greenhouse studies on the effect of different marigold varieties on four Meloidogyne species. Journal of Nematology 31:62-69.

Ploeg, A.T., and P.C. Maris. (1999). Effect of temperature on suppression of Meloidogyne incognita by Tagetes cultivars. Supplement to Journal of Nematology 31(4S):709-714.

Ploeg, A.T. (1999). The influence of temperature on multiplication and egg-hatching of Longidorus africanus. Journal of Nematology 31:75-80.

Phillips, M.S., V.C. Blok, A.T. Ploeg, and B.E. Harrower. (1998). Studies on an artificially fragmented population of potato cyst nematode Globodera pallida. Nematologica 44:655-666.

Ploeg, A.T. and W. Decraemer. (1996). The occurrence and distribution of trichodorid nematodes and associated tobraviruses in Europe. Nematologica 43:228-251.

Ploeg, A.T., F.C. Zoon, J. de Bree and C.J. Asjes. (1996). Analysis of the occurrence and distribution of tobacco rattle virus in field soil and disease in a subsequent tulip crop. Annals of Applied Biology 129:461-469.

Asjes, C.J., M.A.M. Bakker-van der Voort, G.J. Blom-Barnhoorn and A.T. Ploeg. (1996). Flooding sandy soil does not reduce the incidence of nematode transmitted tobacco rattle virus. Nematologica 42:554-563.

Ploeg, A.T., F.C. Zoon and P.W. Th. Maas. (1996). Transmission efficiency of five tobravirus strains by Paratrichadorus teres. European Journal of Plant Pathology 102:123-126.

Ploeg, A.T., A. Mathis, D.J. Robinson, D.J.F. Brown, and J.F. Bol. (1993). Susceptibility of transgenic tobacco plants expressing tobacco rattle virus coat protein to nematode transmitted and mechanically inoculated tobacco rattle virus. Journal of General Virology 74:2709-2715.

Ploeg, A.T., D.J. Robinson, and D.J.F. Brown. (1993). RNA-2 of tobacco rattle virus encodes the determinants of transmissibility by trichodorid vector nematodes. Journal of General Virology 74:1463-1466.

Ploeg, A.T., D.J.F. Brown, and D.J. Robinson. (1992). The association between species of Trichodorus and Paratrichodorus vector nematodes and serotypes of tobacco rattle tobravirus. Annals of Applied Biology 121:619-630.

Ploeg, A.T., D.J.F. Brown, and D.J. Robinson. (1992). Acquisition and subsequent transmission of tobacco rattle virus isolates by Paratrichodorus and Trichodorus nematode species. Netherlands Journal of Plant Pathology 98:291-300.

Ploeg, A.T. (1992). Associations between tobacco rattle virus serotypes and vector species of Paratrichodorus and Trichodorus nematodes. Ph.D. Thesis. University of St. Andrews. 219 pp.

Ploeg, A.T., C.J. Asjes and D.J.F. Brown. (1991). Tobacco rattle virus serotypes and associated nematode vector species of Trichodridae in the bulb-growing areas in the Netherlands. Netherlands Journal of Plant Pathology 97:311-319.

Ploeg, A.T. and D.J.F. Brown. (1989). Factors affecting problems caused by tobacco rattle virus. Aspects of Applied Biology 22:67-72.

Ploeg, A.T., D.J.F. Brown, and D.J. Robinson. (1989). Transmission of tobraviruses by trichodorid nematodes. Bulletin OEPP/EPPO 19:605-610.

Brown, D.J.F., A.T. Ploeg, and D.J. Robinson. (1989). A review of reported associations between Trichodorus and Paratrichodorus species (Nematoda: Trichodoridae) and tobraviruses with a description of laboratory methods for examining virus transmission by trichodorids. Revue de Nematologie 12:235-241.

Brown, D.J.F., A.T. Ploeg, and D.L. Trudgill. (1989). Specificity of transmission of nematode transmitted viruses. Mededelingen Faculteit voor Landbouwwetenschappen Rijsuniversiteit Gent 54:1105-1113.

Brown, D.J.F., A.T. Ploeg, and D.J. Robinson. (1989). The association between serotypes of tobraviruses and Trichodorus and Paratrichodorus species. Bulletin OEPP/EPPO 19: 611-617.

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University of California, Riverside
900 University Ave.
Riverside, CA 92521
Tel: (951) 827-1012

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Department of Nematology
Margarita Flores
1447 Boyce Hall

Tel: (951) 827-3598
Fax: (951) 827-2364