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Selected publications:

  • Blodgett J.T., WJ Swart, and S vd M Louw.  2004.  Identification of fungi and fungal pathogens associated with Hypolixus harens and decayed and cankered stems of Amaranthus hybridus.  Plant Disease 333-337.
  • Boshoff, W.H.P., Pretorius, Z.A. & Van Niekerk, B.D.  2002.  Establishment, distribution and pathogenicity of Puccinia striiformis f.  sp.  tritici in South Africa.  Plant Disease 86:485-492.
  • Boshoff, W.H.P., Pretorius, Z.A. & Van Niekerk, B.D. 2002.  Impact of leaf rust on spring wheat in the winter rainfall region of South South Africa.  SA J Plant & Soil 19: 84-88.
  • Boshoff, W.H.P., Pretorius, Z.A. & Van Niekerk, B.D. 2002.  Resistance in South African and foreign wheat cultivars to pathotypes 6E16A- and 6E22A- of Puccinia striiformis f.  sp.  tritici.  SA J Plant & Soil 19: 27-36.
  • Boshoff, W.H.P., Pretorius, Z.A. Van Niekerk, B.D. 2003.  Fungicide efficacy and the impact of stripe rust on spring and winter wheat in South Africa.  SA J Plant & Soil 20: 11-17.
  • Boshoff, W.H.P., Pretorius, Z.A., Van Niekerk, B.D. & Komen, J.S. 2002.  First report of virulence in Puccinia graminis f.  sp.  tritici to wheat stem rust resistance genes Sr8B and Sr38 in South Africa.  Plant Disease 86: 922.
  • Chen W. Q. and Swart W. J.  2000. Fusarium oxysporum and F. sambucinum associated with root rot of Amaranthus hybridus in South Africa.  Plant Disease 84: 101
  • Chen W. Q. and Swart W. J.  2001.  Genetic variation among Fusarium oxysporum isolates associated with root rot of  Amaranthus hybridus as determined by pathogenicity, isozymes and vegetative compatibility.  Plant Disease 85: 1076-1080.
  • Chen, Weiqun and Swart, W.J., 2000.  First report of stem canker of English walnut caused by Fusarium solani in South Africa.  Plant Disease 84: 592
  • Chen, Wei-Qun, Wijnand J. Swart, & Tielman D. Nieuwoudt, 2000.  A new species of Bipolaris from South Africa.  Mycotaxon 76: 149-152
  • Cilliers, A.J., Van Wyk, P.S. & Pretorius, Z.A.  2003.  Integrated control of Sclerotium rolfsii on groundnut in South Africa.  J. Phytopathology 151: 249-258.
  • Dunhin, B., Pretorius, Z.A., Kloppers, F.J., Bender, C.M. & Flett, B.  2004.  Descriptions of spore stages of Puccinia sorghi in South Africa.  SA J Plant & Soil 21: 48-52.
  • Ghebremariam, D., Groenewald, E.G.,  Koch, S.H., and Swart, W.J.  2004.  The production of gibberellin-like substances by Colletotrichum gloeosporioides associated with lupin anthracnose.  South African Journal of Botany.  70:235-240
  • Kemp, G., Bergmann, C.W., Clay, R., Van der Westhuizen, A.J. & Pretorius, Z.A.  2003. Isolation of a polygalacturonase-inhibiting protein (PGIP) from wheat.  Molecular Plant-Microbe Interactions 16: 955-961.
  • Liebenberg, M.M. & Pretorius, Z.A.  2004.  Inheritance of resistance to Uromyces appendiculatus in the South African dry bean cultivar Kranskop.  SA J Plant & Soil 21: 245-250.
  • Liebenberg, M.M., Liebenberg, A.J. & Pretorius, Z.A.  2005.  Breeding for rust resistance increases dry bean productivity in the South Africa.  SA J Plant & Soil 22 (in press).
  • Marais, G.F., Pretorius, Z.A., Marais, A.S. & Wellings, C.R.  2003. Transfer of rust resistance genes from Triticum species to common wheat.  SA J Plant & Soil 20: 193-198.
  • Negussie, T. & Pretorius, Z.A.  2005.  A settling tower for quantitative deposition of urediniospores of Uromyces viciae-fabae.  SA J Plant & Soil 22 (in press).
  • Negussie, T., Pretorius, Z.A. & Bender, C.M. 2005.  Components of rust resistance in lentil.  Euphytica (in press).
  • Negussie, T., Pretorius, Z.A. & Bender, C.M. 2005.  Effect of some environmental factors on in vitro germination of urediniospores and infection of lentils by rust.  J. Phytopathology 153: 43-47.
  • Pretorius, Z.A., Kloppers, F.J. & Frederick, R.D.  2001.  First report of soybean rust in South Africa.  Plant Disease 85: 1288.
  • Prins, R., Ramburan, V.P., Pretorius, Z.A., Boyd, L.A., Boshoff, W.H.P., Smith, P.H. & Louw, J.H.  2005. Development of a doubled haploid mapping population and linkage map for the bread wheat cross Kariega X Avocet S.  SA J Plant & Soil 22: (in press).
  • Ramburan, V.P., Pretorius, Z.A., Louw, J.H., Boyd, L.A., Smith, P.A., Boshoff, W.H.P. & Prins, R.  2004.  A genetic analysis of adult plant resistance to stripe rust in the wheat cultivar Kariega.  Theoretical and Applied Genetics 108: 1426-1433.
  • Shimelis, H.A., Spies, J.J., Pretorius, Z.A. & Labuschagne, M.T.  2005. Chromosome locations of leaf rust resistance genes in selected tetraploid wheats through substitution lines. Euphytica (in press).
  • Shimelis, H. and Swart, W.J.  2004.  Characterization of cabbage cultivars for resistance to black rot caused by Xanthomonas campestris pv. campestris.  African Plant Protection 10(1):43-52.
  • Snyman, L., Pretorius, Z.A., Kloppers, F.J. & Marais, G.F.  2004.  Detection of adult-plant resistance to Puccinia triticina in a collection of wild Triticum species.  Genetic Resources and Crop Evolution 51: 591-597.  
  • Stansbury, C.D. & Pretorius, Z.A.  2001.  Modelling the potential distribution of Karnal bunt on wheat in South Africa.  SA J Plant & Soil18:159-168.
  • Swart, W.J.  2004. First Report of Powdery mildew of cashew caused by Oidium anacardii in South Africa.  Plant Dis. 88:1284.
  • Swart, W.J. and Botha, W.  2004.  The characterization of Pythium group G occurring on kenaf in South Africa.  S. Afr. J. Plant and Soil  21:25-29
  • Swart, W.J. and W-M. Kriel  2002  Pathogens Associated with Necrosis of Cactus Pear Cladodes in South Africa.  Plant Disease 86: 693
  • Swart W J, Nieuwoudt D, & Pretorius J C 2003.   Influence of nitrogen fertilization on susceptibility of pistachio seedlings to  Botryosphaeria obtusa and B. dothidea.  African Plant Protection  9:115-117.
  • Swart, W.J. , Oelofse R.M., & Labuschagne, M.T. 2003.  Susceptibility of South African cactus pear varieties to four fungi commonly associated with disease symptoms.  Journal of the Professional Association for Cactus Development 5:86-97.
  • Swart, W.J. & Swart, V.R. 2003.  An Overview of Research on Diseases of Cactus Pear in South Africa.  Journal of the Professional Association for Cactus Development 5:115-120.
  • Swart, W.J. and J. Terblanche.  2001.  First Report of Powdery Mildew of Kenaf Caused by Leveillula taurica in South Africa.  Plant Dis. 85:923.
  • Swart, W.J., M.T. Tesfaendrias and W. Botha. 2002.  First Report of Basal Stem Rot caused by Pythium G-group on Kenaf in South Africa.  Plant Disease 86: 698
  • Swart, W.J., M.T. Tesfaendrias, and J. Terblanche. 2001.  First Report of Botrytis cinerea on kenaf in South Africa.  Plant Dis. 85:1032.  
  • Tarekegn, G.N W McLaren  and W J Swart. 2004. Relationship between grain development stage and sorghum cultivar susceptibility to grain mould.  African Plant Protection 10(1):53-62.
  • Tesfaendrias, M.T.BLODGETT, J. T., SWART, W. J., LOUW, S. vdM. & WEEKS, W. J. 2000. Species composition of endophytic fungi in Amaranthus hybridus leaves, petioles, stems, and roots. Mycologia 92(5): 853-859.
  • LOUW, S. vdM. & MYBURGH, E. 2000. Occurrence and prominence of insect guilds on tree spinach (Amaranthus hybridus) cultivated in the central Free State, South Africa. African Plant Protection 6(2): 9 - 16.
  • SWART, V. R., SWART, W. J., LOUW, S. vdM. LOUW & KRIEL, W. M. 2001. An ecological complex of parasitic fungi associated with Drosophila spp. that utilize Opuntia ficus-indica. Journal of the South African Veterinary Association 72(3): 175.
  • LOUW, S. vdM., SWART, W. J., HONIBALL, S. J. & CHEN, W. 2002. Weevil - fungus interaction on Amaranthus hybridus (Amaranthaceae) in South Africa. African Entomology 10(2): 361 - 364.
  • SWART, V. R., SWART, W. J., LOUW, S. vdM. & KRIEL, W-M. 2002. Fungal associations of Lygaeidae and Coreidae utilizing Pistacia vera and Cajanus cajan in South Africa. Antenna (Bulletin of the Royal Entomological Society, London) 26(1): 36 - 37.
  • SWART, V. R., SWART, W. J., LOUW, S. vdM. & KRIEL, W-M. 2002. Phytopathogenic fungi associated with Drosophila spp. that utilize Opuntia ficus-indica. Antenna (Bulletin of the Royal Entomological Society, London) 26(1): 37 - 38.
  • KIGGUNDU, A., GOLD, C.S., LABUSCHAGNE, M.T., VUYLSTEKE, D. & LOUW, S. vdM. 2003. Components of resistance to Banana weevil (Cosmopolites sordidus) in Musa germplasm in Uganda. Euphytica 133: 267 – 277.
  • HADDAD, C. R., LOUW, S. vdM., DIPPENAAR - SCHOEMAN, A. S. 2004. An assessment of the biological control potential of Heliophanus pistaciae (Araneae: salticidae) on Nysius natalensis (Hemiptera: Lygaeidae), a pest of pistachio nuts. Biological Control 31: 83 - 90.
  • LOUW, S. vdM., KOK, J. D. S. & SWART, V. R. 2004. The importance of sanitation in cactus pear orchards in South Africa: A case study. Proceedings of the Second Australian New Crops Conference, University of Queensland, Gatton Campus: 167 - 176.
  • LOUW, S. vdM. & FOURIE, DeV. 2004. Patterns over time: Implications of insect phytophagy on pistachio development in South Africa.  Proceedings of the Second Australian New Crops Conference, University of Queensland, Gatton Campus: 177 - 186.
  • SWART, W. J. & LOUW, S. vdM. 2004. Holistic new crop development in Southern Africa: A novel approach to old issues. Proceedings of the Second Australian New Crops Conference, University of Queensland, Gatton Campus: 246 - 255.
  • HADDAD, C. R., LOUW, S. vdM., DIPPENAAR - SCHOEMAN, A. S. 2004. Spiders (Araneae) in ground covers of pistachio orchards in South Africa. African Plant Protection 10: 97-107.
  • PEKÁR, S. & HADDAD, C. R. 2004. Can spiders (Araneae) avoid a surface with pesticide residues? Pest Management Science. (In press).
  • HADDAD, C. R. & LOUW, S. vdM. 2004. Phenology, ethology and fecundity of Heliophanus pistaciae Wesolowska (Araneae: Salticidae), an agrobiont jumping spider in South African pistachio orchards.  African Plant Protection. (In press).
  • HADDAD, C. R. & DIPPENAAR SCHOEMAN, A. S. 2004. Epigeic spiders (Araneae) in pistachio orchards in South Africa. African Plant Protection. (In press).
  • LOUW, S. vdM. 2005. The pasture grass - endophyte - herbivore system: Insects in a complex, multifaceted interaction. Proceedings of the 40th Congress of the Grasslands Society of Southern Africa. (In press).
  • HADDAD, C. R. & LOUW, S. vdM. (in review). Phenology and possible control measures for the stinkbug Atelocera raptoria (Hemiptera: Pentatomidae) in pistachio orchards. African Plant Protection.
  • HADDAD, C. R., DIPPENAAR SCHOEMAN, A. S. & PEKÁR, S. (in review). Arboreal spiders (Arachnida: Araneae) in pistachio orchards in South Africa. Agricultural and Forest Entomology.
  • HADDAD, C. R. & LOUW, S. vdM. (in review). Disturbance effects of pistachio orchard establishment on epigeic spider communities (Arachnida: Araneae). Agriculture, Ecosystems and Environment.,

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