Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Datasheet

Nacobbus aberrans
(false root-knot nematode)

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Datasheet

Nacobbus aberrans (false root-knot nematode)

Summary

  • Last modified
  • 14 July 2018
  • Datasheet Type(s)
  • Pest
  • Natural Enemy
  • Preferred Scientific Name
  • Nacobbus aberrans
  • Preferred Common Name
  • false root-knot nematode
  • Taxonomic Tree
  • Domain: Eukaryota
  •   Kingdom: Metazoa
  •     Phylum: Nematoda
  •       Family: Pratylenchidae
  •         Genus: Nacobbus

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Pictures

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PictureTitleCaptionCopyright
Mature female of N. aberrans.
TitleFemale
CaptionMature female of N. aberrans.
Copyright©J. Bridge/CABI BioScience
Mature female of N. aberrans.
FemaleMature female of N. aberrans.©J. Bridge/CABI BioScience
Root galls caused by N. aberrans.
TitleRoot galls
CaptionRoot galls caused by N. aberrans.
Copyright©J. Bridge/CABI BioScience
Root galls caused by N. aberrans.
Root gallsRoot galls caused by N. aberrans.©J. Bridge/CABI BioScience
A, posterior region of immature female; B, posterior region of mature female; C, mature females; D, entire male; E, anterior region of male; F, oesophageal region of male; G, posterior region of male; H, anterior region of second stage juvenile; I, posterior region of second stage juvenile.
TitleLine artwork of N. aberrans
CaptionA, posterior region of immature female; B, posterior region of mature female; C, mature females; D, entire male; E, anterior region of male; F, oesophageal region of male; G, posterior region of male; H, anterior region of second stage juvenile; I, posterior region of second stage juvenile.
CopyrightCAB International
A, posterior region of immature female; B, posterior region of mature female; C, mature females; D, entire male; E, anterior region of male; F, oesophageal region of male; G, posterior region of male; H, anterior region of second stage juvenile; I, posterior region of second stage juvenile.
Line artwork of N. aberransA, posterior region of immature female; B, posterior region of mature female; C, mature females; D, entire male; E, anterior region of male; F, oesophageal region of male; G, posterior region of male; H, anterior region of second stage juvenile; I, posterior region of second stage juvenile.CAB International

Identity

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Preferred Scientific Name

  • Nacobbus aberrans (Thorne,1935) Thorne & Allen, 1944

Preferred Common Name

  • false root-knot nematode

Other Scientific Names

  • Anguillulina aberrans Thorne, 1935
  • Nacobbus batatiformis Thorne & Schuster, 1956
  • Nacobbus bolivianus Lordello, Zamith & Boock, 1961
  • Nacobbus serendipiticus Franklin, 1959
  • Nacobbus serendipiticus bolivianus Lordello, Zamith & Boock, 1961
  • Pratylenchus aberrans (Thorne, 1935) Filipjev, 1936

International Common Names

  • English: potato rosary nematode
  • Spanish: rosario nematodo de la papa

EPPO code

  • NACOBA (Nacobbus aberrans)

Taxonomic Tree

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  • Domain: Eukaryota
  •     Kingdom: Metazoa
  •         Phylum: Nematoda
  •             Family: Pratylenchidae
  •                 Genus: Nacobbus
  •                     Species: Nacobbus aberrans

Distribution Table

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The distribution in this summary table is based on all the information available. When several references are cited, they may give conflicting information on the status. Further details may be available for individual references in the Distribution Table Details section which can be selected by going to Generate Report.

Continent/Country/RegionDistributionLast ReportedOriginFirst ReportedInvasiveReferenceNotes

Asia

IndiaAbsent, invalid recordCABI and EPPO, 1999; EPPO, 2014

Africa

EgyptPresentAbu-Gharbieh and Al-Azzeh, 2004

North America

MexicoRestricted distributionCABI/Zuckerman et al., 1989; Zamudio et al., 1990; Cooke, 1993; Ibrahim et al., 1997; EPPO, 2014
USARestricted distributionCABI and EPPO, 1999; EPPO, 2014
-ArkansasPresentCABI and EPPO, 1999; EPPO, 2014
-ColoradoPresentThorne and Schuster, 1956; Caveness, 1959; CABI and EPPO, 1999; EPPO, 2014
-KansasPresentCABI/Caveness, 1959; EPPO, 2014
-MontanaPresentCABI/Caveness, 1959; THORNE and MALEK, 1968; EPPO, 2014
-NebraskaPresentCABI/Thorne & Schuster, 1956; Thorne, 1961; THORNE and MALEK, 1968; EPPO, 2014
-South DakotaPresentCABI/Caveness, 1959; EPPO, 2014
-UtahPresentCABI/Thorne, 1935; EPPO, 2014
-WyomingPresentThorne and Schuster, 1956; Caveness, 1959; CABI and EPPO, 1999; EPPO, 2014

South America

ArgentinaWidespreadCABI/Costilla et al., 1977; Gonzalez de Ojeda et al., 1978; Doucet et al., 1985; Doucet, 1989; Doucet et al., 1997; EPPO, 2014
BoliviaRestricted distributionCABI/Cooke, 1993; EPPO, 2014
ChilePresent, few occurrencesGallo, 1974; CABI and EPPO, 1999; EPPO, 2014
EcuadorRestricted distributionCooke, 1993; CABI and EPPO, 1999; EPPO, 2014
PeruRestricted distributionCABI/Cornejo Quiroz, 1977; Jatala, 1979; Amaya and Villanueva, 1981; EPPO, 2014

Europe

FinlandAbsent, invalid recordCABI and EPPO, 1999; EPPO, 2014
ItalyAbsent, reported but not confirmedCABI and EPPO, 1999
NetherlandsAbsent, formerly present1968CABI and EPPO, 1999; EPPO, 2014
Russian FederationAbsent, intercepted onlyCABI and EPPO, 1999; EPPO, 2014
-Russia (Europe)Absent, intercepted onlyCABI and EPPO, 1999; EPPO, 2014
SpainAbsent, invalid recordEPPO, 2014
UKEradicated1959CABI/Franklin, 1959; EPPO, 2014
-England and WalesEradicatedCABI and EPPO, 1999; EPPO, 2014

Growth Stages

Top of page Flowering stage, Fruiting stage, Pre-emergence, Seedling stage, Vegetative growing stage

List of Symptoms/Signs

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SignLife StagesType
Leaves / necrotic areas
Leaves / yellowed or dead
Roots / galls along length
Roots / swollen roots
Whole plant / plant dead; dieback

Plant Trade

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Plant parts liable to carry the pest in trade/transportPest stagesBorne internallyBorne externallyVisibility of pest or symptoms
Bulbs/Tubers/Corms/Rhizomes adults; eggs; juveniles Yes Yes Pest or symptoms not visible to the naked eye but usually visible under light microscope
Growing medium accompanying plants adults; eggs; juveniles Yes Pest or symptoms not visible to the naked eye but usually visible under light microscope
Roots adults; eggs; juveniles Yes Yes Pest or symptoms not visible to the naked eye but usually visible under light microscope
Seedlings/Micropropagated plants adults; eggs; juveniles Yes Yes Pest or symptoms not visible to the naked eye but usually visible under light microscope
Plant parts not known to carry the pest in trade/transport
Bark
Flowers/Inflorescences/Cones/Calyx
Fruits (inc. pods)
Leaves
Stems (above ground)/Shoots/Trunks/Branches
True seeds (inc. grain)
Wood

References

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1984. Nacobbus abberrans (Thorne) Thorne & Allen (sensu lato). Bulletin OEPP, 14(1):61-65

Abu-Gharbieh W; Al-Azzeh T, 2004. A checklist on nematode-plant associations in the Arab countries. Arab Journal of Plant Protection, 22(1):1-22.

Alarcon C, 1977. An evaluation of some native Bolivian potato cultivars for resistance to Nacobbus spp. causal agent of rosario or false root-knot nematode. Nematropica, 7(2):2

Alarcón C; Jarala P, 1977. The effect of temperature on the resistance of Solanum andigena to Nacobbus aberrans. Nematropica, 7(2):2-3.

Altman I; Thomason IJ, 1971. Nematodes and their control. In: Johnson RT, Alexander JT, Rush GE, Hawkes GR, eds. Advances in Sugarbeet Production: Principles and Practices. Ames, USA: Iowa State University Press, 335-370.

Amaya de Guerra J; Villanueva A C, 1980. Nacobbus aberrans causing damage to Capsicum pendulum in Trujillo, Peru. Revista Peruana de Entomologia, 23(1):169

Ambrogioni L; Tacconi R, 1992. Nacobbus aberrans (Thorne and Allen) (sensu lato) Tylenchida, Pratylenchidae. Informatore Fitopatologico, 42(9):33-38

Anon., 1973 onwards. Annual Reports of the International Potato Center. Lima, Peru: International Potato Center.

Anon., 1977. Major Potato Diseases and Nematodes. Lima, Peru: The International Potato Center.

Anon., 1979. Potato. Argentina, Estacion Experimental Agricola de Tucuman: Annual report 1977: Memoria anual 1977. Publicacion Miscelanea, Estacion Experimental Agricola de Tucuman, 1979.

Anthoine G; Mugniery D, 2005. Variability of the ITS rDNA and identification of Nacobbus aberrans (Thorne, 1935) Thorne & Allen, 1944 (Nematoda: Pratylenchidae) by rDNA amplification.

Brodie BB, 1993. Nematode parasites of potatoes. In: Evans E, Trudgill DL, Webster JM, eds. Plant Parasitic Nematodes in Temperate Agriculture. Wallingford, UK: CAB International, 87-132.

CABI/EPPO, 1998. Distribution maps of quarantine pests for Europe (edited by Smith IM, Charles LMF). Wallingford, UK: CAB International, xviii + 768 pp.

CABI; EPPO, 1999. Nacobbus aberrans. [Distribution map]. Distribution Maps of Plant Diseases, April (Edition 1). Wallingford, UK: CAB International, Map 779.

Cahuana A; Cornejo OW; Huanco SV, 1975. Sources of resistance to the false root-knot nematode (Nacobbus sp.) among 50 potato clones. Fitopatologfa, 10:71.

Canto M; Gommers FJ; Maas PW Th, 1992. Life cycle and pathogenicity of Nacobbus aberrans (Thorne, 1935) Thorne and Allen, 1944. Nematology from molecule to ecosystem: Proceedings Second International Nematology Congress, 11 17 August 1990, Veldhoven, the Netherlands. Dundee, UK: European Society of Nematologists, 113-127.

Caveness FE, 1959. Distribution of cyst- and gall-forming nematodes of sugar beets in the United States. Journal of the American Society of Sugar Beet Technologists, 10:544-552.

Chitwood BG, 1950. General structure of nematodes. In: Chitwood BG, Chitwood MB, eds. An Introduction to Nematology. Baltimore, USA: Monumental Printing Co.

Cid del Prado I, 1985. Ciclo de vida de Nacobbus aberrans (Thorne, 1935), Thorne y Allen, 1944. In: Marban N, Thomason IF, eds. Fitonematologfa Avanzada I. Colegio de Postgraduados, Montecillo, Mexico, 57-65.

Clark SA, 1967. The development and life history of the false root-knot nematode, Nacobbus serendipiticus. Nematologica, 13:91-101.

Cooke D, 1993. Nematodes Parasites of Sugarbeet. In: Evans K, Trudgill DL, Webster JM, eds. Plant Parasitic Nematodes in Temperate Agriculture. Wallingford, UK: CAB International, 133-169.

Cornejo Quiroz W, 1977. Chemical control of Nacobbus aberrans and Globodera spp. Nematropica, 7(2):6

Cornejo Quiroz W, 1977. Host range studies for Nacobbus aberrans. Nematropica, 7(2):14

Costilla MA; Gonzales de Ojeda S; Hasselrot de Gomez T, 1977. A contribution to the study of the "false root knot nematode" Nacobbus aberrans. Nematropica, 7(2):7-8

De Bruijn N; Stemerding S, 1968. Nacobbus serendipiticus, a plant parasitic nematode new to the Netherlands. Netherlands Journal of Plant Pathology, 74:227-228.

Doucet ME, 1989. The genus Nacobbus Thorne & Allen, 1944 in Argentina. 1. Study of a population of N. aberrans (Thorne, 1935) Thorne & Allen, 1944 on Chenopodium album L. from Rio Cuarto, Province of Cordoba. Revue de Nematologie, 12(1):17-26

Doucet ME; Lorenzo de Ponce de Leon E; Belluomini MCde, 1985. Chenopodium album L.: efficient host of Nacobbus aberrans (Thorne, 1935) Thorne & Allen, 1944 and Meloidogyne javanica (Treub, 1885) Chitwood, 1949 in the Province of Cordoba. IDIA, No. 437/440:36-43

Doucet ME; Ponce de Leon ELde; Tordable MC; Poloni N, 1997. Nacobbus aberrans and its association with plants in Argentina. Nematologia Mediterranea, 25(2):279-285; 9 ref.

Doucet ME; Rienzo JAdi, 1991. The genus Nacobbus Thorne & Allen, 1944 in Argentina. 3. Morphological and morphometric characterization of N. aberrans (Thorne, 1935) Thorne & Allen, 1944 populations. Nematropica, 21(1):19-35; 24 ref.

Eguiguren-Carrion R, 1995. Control of Meloidogyne incognita and Nacobbus sp. with Paecilomyces lilacinus in the greenhouse and effect of nematicides on the fungus. BIOCONTROL, 1(4):41-49; 5 ref.

EPPO, 1990. Specific quarantine requirements. EPPO Technical Documents, No. 1008. Paris, France: European and Mediterranean Plant Protection Organization.

EPPO, 2009. PM 7/5(2): Nacobbus aberrans sensu lato. Bulletin OEPP/EPPO Bulletin, 39(3):376-381. http://www.blackwell-synergy.com/loi/epp

EPPO, 2014. PQR database. Paris, France: European and Mediterranean Plant Protection Organization. http://www.eppo.int/DATABASES/pqr/pqr.htm

Finetti Sialer MS, 1990. Histopathological changes induced by Nacobbus aberrans in resistant and susceptible potato roots. Revue de Ne^acute~matologie, 13(2):155-160; 16 ref.

Franklin MT, 1959. Nacobbus serendipiticus n. sp., a root-galling nematode from tomatoes in England. Nematologica, 4:286-293.

Gallo D P, 1974. Nematodes associated with the cultivation of oregano, Origanum vulgare L. in the Department of Arica. Idesia, Chile, No. 3:211-214

Golden AM, 1971. Classification of the genera and higher categories of the Order Tylenchida (Nemtoda). In: Zuckerman BM, Mai WF, Rohde RA, eds. Plant Parasitic Nematodes. Volume 1. New York, USA: Academic Press, 191-234.

Gómez-Tovar J, 1973. Contribución al estudio de infestación y difución del falso nematodo del nudo de Cobb, Nacobbus serendipiticus Franklin en el Per·. Nematropica, 3:4.

Gonzalez de Ojeda S; Costilla MA; Hasselrot de Gomez TA, 1978. Nematodes identified in potato crops in Tucuman Province. Revista Industrial y Agricola de Tucuman, 55(1):65-69

Gonzßlez A; Franco J; Matos A, 1991. Development of Nacobbus aberrans (Thorne, 1936) Thorne and Allen 1944, in Petri dishes. An alternative method for resistance evaluation in Solanum tuberosum L. Nematropica, 21(2):155-160; 21 ref.

Huaman Z, 1982. Utilization of CIP's primitive potato germ plasm to develop improved back up populations. Utilization of the Genetic Resources of the Potato III, 28-39. Lima, Peru: International Potato Center.

Ibrahim SK; Baldwin JG; Roberts PA; Hyman BC, 1997. Genetic variation in Nacobbus aberrans: an approach toward taxonomic resolution. Journal of Nematology, 29(3):241-249; 38 ref.

Inserra RN; Di Vito M; Ferris H, 1984. Influence of Nacobbus aberrans densities on growth of sugarbeet and kochia in pots. Journal of Nematology, 16(4):393-395

Inserra RN; Griffin GD; Anderson JL, 1985. The false root knot nematode Nacobbus aberrans. Research Bulletin, Utah Agricultural Experiment Station, No. 510.

Inserra RN; Griffin GD; Vovlas N; Anderson JL; Kerr ED, 1984. Relationship between Heterodera schachtii, Meloidogyne hapla, and Nacobbus aberrans on sugarbeet. Journal of Nematology, 16(2):135-140

Inserra RN; Vovlas N; Griffin GD; Anderson JL, 1983. Development of the false root-knot nematode, Nacobbus aberrans, on sugarbeet. Journal of Nematology, 15(2):288-296

Jatala P, 1979. Review of the false root-knot nematode (Nacobbus spp.). Research progress. International Potato Center. Report of the 2nd Planning Conference on the Developments in the Control of Nematode Pests of Potatoes, Lima, Peru, 13-17 November 1978. Lima, Peru: International Potato Center, 66-69.

Jatala P; Kaltenbach R, 1979. Survival of Nacobbus aberrans in adverse conditions. Journal of Nematology, 11:303

Jimenez Roco M, 1972. On the nematodes of Arica Department. (Part Two). Idesia, Chile, No. 2:53-58

Jones MGK; Payne HL, 1977. Scanning electron microscopy of syncytia induced by Nacobbus aberrans, in tomato roots. Nematologica, 23(2):172-176

Jones MGK; Payne HL, 1977. The structure of syncytia induced by the phytoparasitic nematode Nacobbus aberrans in tomato roots, and the possible role of plasmodesmata in their nutrition. Journal of Cell Science, 23:299-313

Kerr ED, 1991. Evaluation of nematicide treatments for control of nematodes on sugar beet. Fungicide and Nematicide Tests, 46:197.

Kir'yanova ES; Lobanova NA, 1975. A potato parasite. Zashchita Rastenii, No.9:49

La Rosa DG; Jatala P, 1977. The depth of penetration of Nacobbus aberrans in potato tubers. Nematropica, 7(2):11

Leon EL de Ponce de; Doucet ME, 1989. The genus Nacobbus Thorne & Allen, 1944 in Argentina. 2. Association between N. aberrans (Thorne, 1935) Thorne & Allen, 1944 and the weed Sisymbrium irio L. Revue de Nematologie, 12(3):269-271

Lordello LGE; Zamith AP; Boock OJ, 1961. Two nematodes found attacking potato in Cochabamba, Bolivia. An. Acad. Brasil Cienc., 33:209-215.

Manzanilla-L=pez RH; Harding S; Evans K, 1999. Morphometric study on twelve populations of Nacobbus aberrans (Thorne, 1935) Thorne & Allen, 1944 (Nematoda: Pratylenchidae) from Mexico and South America. Nematology, 1(5):477-498; 23 ref.

Manzanilla-López RH; Costilla MA; Doucet M; Franco J; Inserra RN; Lehman PS; Cid del Prado Vera I; Souza RM; Evans K, 2002. The genus Nacobbus Thorne & Allen, 1944 (Nematoda: Pratylenchidae): Systematics, distribution, biology and management. Nematropica, 32(2): 149-227.

Marban-Mendoza N; Dicklow MB; Zuckerman BM, 1989. Evaluation of control of Meloidogyne incognita and Nacobbus aberrans on tomato by two leguminous plants. Revue de Ne^acute~matologie, 12(4):409-412; 8 ref.

Mendoza-de Gives P; Zavaleta-Mejia E; Herrera-Rodriguez D; Quiróz-Romero H, 1994. In vitro trapping capability of Arthrobotrys spp. on infective larvae of Haemonchus contortus and Nacobbus aberrans. Journal of Helminthology, 68(3):223-229; 37 ref.

OEPP/EPPO, 1982. Recommendations on new quarantine measures. Bulletin OEPP/EPPO Bulletin. 1982, Special Issue.

OEPP/EPPO, 2001. Nacobbus aberrans. Bulletin OEPP/EPPO Bulletin, 31(1): 71-77.

Otazu V; Hoopes R; Cpro G; Huayta I, 1985. The false rootknot nematode of potatoes Nacobbus aberrans; its effect on yield and some aspects that favour its dissemination and prevalence in Bolivia. Fitopatologia, 20(2):65-70.

Prasad SK; Webster JM, 1967. Effect of temperature on rate of development of Nacobbus serendipiticus in excised tomato roots. Nematologica, 13(1):85-90.

PROINPA, 1991. Proyecto de Investigación de la Papa. Annual Report 1990-91. Compendium, Cochabamba, Bolivia: 47-56.

Quimi VH, 1981. Estudio histopatologico y comportamiento de Nacobbus aberrans. Nematropica, 11:86.

Reid A; Manzanilla-Lopez RH; Hunt DJ, 2003. Nacobbus aberrans (Thorne, 1935) Thorne & Allen, 1944 (Nematoda: Pratylenchidae); a nascent species complex revealed by RFLP analysis and sequencing of the ITS-rDNA region. Nematology, 5(3): 441-451.

Saxena SK, 1986. Nematode infestations in vegetables. In: Swarup G, Dasgupta DR, eds. Plant Parasitic Nematodes of India, Problems and Progress. New Delhi, India: Indian Agricultural Research Institute, 312-327.

Sher SA, 1970. Revision of the genus Nacobbus Thorne & Allen, 1944 (Nematoda: Tylenchida). Journal of Nematology, 2:228-235.

Siddiqi MR, 1963. On the classification of the Pratylenchidae (Thorne, 1949) nov. grad. (Nematoda: Tylenchida), with a description of Zygotylenchus browni nov. gen. et nov. sp. Zeitschrift für Parasitenkunde, 23:390-396.

Siddiqi MR, 1986. Tylenchida: parasites of plants and insects. Farnham Royal, UK: CAB International, (ix)+ 646pp.

Silvestri L; Sisler GM de; Roan J, 1985. Identification of plant parasitic nematodes on horticultural crops in La Plata (Argentina). International Nematology Network Newsletter, 2(4):407.

Sisler GM de; Casaurang APde, 1983. Response of tomato and sweet pepper cultivars to Nacobbus aberrans (Nematoda, Nacobbidae). Revista de la Facultad de Agronomia, Universidad de Buenos Aires, 4(1):79-82

Smith IM; McNamara DG; Scott PR; Holderness M, 1997. Quarantine pests for Europe. Second Edition. Data sheets on quarantine pests for the European Union and for the European and Mediterranean Plant Protection Organization. Quarantine pests for Europe. Second Edition. Data sheets on quarantine pests for the European Union and for the European and Mediterranean Plant Protection Organization., Ed. 2:vii + 1425 pp.; many ref.

Tacconi R; Ambrogioni L, 1995. Quarantine Nematodes. Bologna, Italy: Editrice "Lo Scarabeo".

Thorne G, 1935. The sugar beet nematode and other indigenous nemic parasites of shadscale. Journal of Agricultural Research, 51:509-514.

Thorne G, 1949. On the classification of the Tylenchida, new order (Nematoda, Phasmidia). Proceedings of the Helminthological Society of Washington, 16(2):37-73.

Thorne G, 1961. Principles of Nematology. London, UK: McGraw Hill.

Thorne G; Allen MW, 1944. Nacobbus dorsalis, nov. gen., nov. spec. (Nematoda: Tylenchidae) producing galls on roots of alfileria, Erodium cicutarium (L.) L'Hér. Proceedings of the Helminthological Society of Washington, 11:27-31.

THORNE G; MALEK RB, 1968. Nematodes of the northern Great Plains. Part I. Tylenchida (Nemata: Secernentea). Tech. Bull. S. Dak. agrie. Exp. Stn, 31. 111 pp.

Thorne G; Schuster ML, 1956. Nacobbus batatiformis n. sp. (Nematoda: Tylenchidae), producing galls on the roots of sugar beet and other plants. Proceedings of the Helminthological Society of Washington, 23:128-134.

Tsay TT, 1997. Introductive occasions of exotic plant-parasitic nematodes into Taiwan and the retarding strategies. Plant Protection Bulletin (Taipei), 39(1):33-61; 105 ref.

Vargas EMT; Zavaleta Mejfa E; HTrnandez AAM, 1996. Breaking of resistance to Phytophthora capsici Leo. in chilli (Capsicum annuum L.) Serrano CM-34 by Nacobbus aberrans Thorne and Allen. Nematropica, 26(2):159-166; 18 ref.

Veremis JC; Cap GB; Roberts PA, 1997. A search for resistance in Lycopersicon spp. to Nacobbus aberrans. Plant Disease, 81(2):217-221; 25 ref.

Ward MG; Hockland S, 1996. Nematodes and plant health: legislation and sampling strategies in decision making for nematode management. Pesticide Science, 47(1):77-80; [^italic~Paper presented at the symposium 'Management of problems caused by plant parasitic nematodes', London, 25 April 1995.^roman~]; 11 ref.

Zamudio GV; Carballo QA; Marbßn-Mendoza N, 1990. Range of hosts and assessment of damage due to Nacobbus aberrans (Thorne, 1935) Thorne and Allen 1944, in commercial vegetable gardens. Revista Mexicana de Fitopatologi^acute~a, 8(1):9-12; 9 ref.

Zavaleta Mejfa E; G=mez RO, 1995. Effect of Tagetes erecta L.-tomato (Lycopersicon esculentum Mill.) intercropping on some tomato pests. Fitopatologi^acute~a, 30(1):35-46; 36 ref.

Zuckerman BM; Dicklow MB; Coles GC; Garcia-E R; Marban-Mendoza N, 1989. Suppression of plant parasitic nematodes in the chinampa agricultural soils. Journal of Chemical Ecology, 15(6):1947-1955; 10 ref.

Distribution Maps

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