1. Liebenberg, A; Van der Nest, R; Hardie, AG; Labuschagne, J and Swanepoel PA.  Extent of Soil Acidity in No-Tillage Systems in the Western Cape Province of South Africa.  Land 2020, 9: 361; doi:10.3390/land9100361  (17 pages).  Published 29 September  2020
  2. Smit, HPJ; Reinsch, T; Swanepoel PA; Kluß, C and Taube F. Grazing under Irrigation Affects N20-Emissions Substantially in South Africa.  Atmosphere 2020, 11: 925; doi:10.3990/atmos11090925 (19 pages)  Published 29 August 2020
  3. Viljoen, C; Van der Colf, J and Swanepoel, PA.  Benefits are limited with High Nitrogen Fertiliser Rates in Kikuyu-Ryegrass Pasture Systems.  Land 2020, 9: 173; doi:10.3390/land9060173 (20 pages)  Published 19 May 2020
    Saul, HAE; Booyse, M and Swanepoel, PA.  A comparison of experimental designs for cultivar evaluations.  South African Journal of Plant and Soil 2020, 37(2): 144-151
  4.  Haarhoff, SJ and Swanepoel, PA.  Narrow rows and high maize plant population improve water use and grain yield under conservation agriculture.  Agronomy Journal 2020, 112: 921-931.
  5. Swanepoel, PA and Labuschagne, J.  Canola is injured by in-row nitrogen placement associated with disc openers, but not by tine openers.  Crop Science 2020, 60: 466-474 
  6. Raaijmakers, S and Swanepoel, PA.  Vulnerability, institutional arrangements and the adaptation choices made by farmers in the Western Cape province of South Africa.  South African Journal of Plant and Soil 2020, 37(1): 51-59 
  7. Haarhoff, SJ; Lotze, E and Swanepoel PA.  Rainfed maize root morphology in response to plant population under no-tillage.  Agronomy Journal 2020,  doi:10.1002/agj2.20411.  Accepted 28 August 2020  
  8. Haarhoff, SJ; Kotze, TN and Swanepoel PA.  A prospectus for sustainability of rainfed maize production systems in South Africa.  Crop Science 2020, 60:14-28
  9. Becker, F; MacLaren, C; Brink, CJ; Jacobs, K; Le Roux, MR and Swanepoel PA.  High nitrogen rates do not increase canola yield and may effect soil bacterial functioning.  Agronomy Journal 2020, 112: 523-536 
  10. Mucheri, T; Pieterse, PJ; Reinhardt, CF and Kleinert, A.  Responses of Lolium spp. to glufosinate ammonium application at different temperatures.  Weed Research 2020, 60: 374-384 
  11. Labuschagne, J; Bester, C and Pieterse, PJ.  Effect of nitrogen fertilisation during the cool season on daily growth rate, botanical composition and selected nutritive characteristics of a mixed grass-clover pasture in the Winelands sub-region of the Western Cape.  South African Journal of Plant and Soil 2020, 37(2): 236-243
  12. Mashamaite, CV; Mothapo, PN; Albien, AJ; Pieterse, PJ and Phiri EE.  A SUSPECT under the National Environment Management Biodiversity Act (NEM:BA) – Moringa oleifera's ecological and social costs and benefits.  South African Journal of Botany 2020, 129: 249-254
  13. Rugare, JT; Pieterse, PJ and Mabasa, S.  Evaluation of the potential of jack bean (Canavalia ensiformis (L.) DC.) and velvet bean (Mucuna Pruriens (l) DC.) aqueous extracts as post-emergence bio-herbicides for weed control in Maize (Zea mays L.).  Asian Journal of Agricultural and Rural Development 2020, 10(1): 420-439 
  14. Rugare JT, Pieterse PJ and Mabasa S. 2020. Effects of green manure cover crops (Canavalia ensiformis L. and Mucuna pruriens L.) on seed germination and seedlings growth of maize and Eleusine indica L. and Bidens pilosa L. weeds.  Allelopathy Journal 2020, 50: 119-138 
  15. Mashamaite, CV; Dube, ZP and Phiri, EE.  Chemical root-pruning of Moringa oleifera for improved seedling growth.  South African Journal of Botany 2020, 129: 155-160​



  1. Munda, E., Pieterse, P.J., Andrade, M.I, Makunde, G.S and Pereira, E.I.  2019.  Improving productivity of orange-fleshed sweetpotato (Ipomoea batatas) through intercropping with legumes and moderate phosphorus application.  South African Journal of Plant and Soil 2019, 36 (3): 221-228.
  2. Rugare, J.T., Pieter​se, P.J. and Mabasa, S. 2019. Effect of short-term maize-cover crop rotations on weed emergence, biomass and species composition under conservation agriculture.  South African Journal of Plant and Soil 2019, 329-337.
  3. Zou, C., Du, Y., Rashid, A., Ram, H., Savasli, E., Pieterse, P.J., Ortiz-Monasterio, I., Yazici, A., Kaur, C., Mahmood, K., Singh, S., Le Roux, M.R., Kuang, W., Onder, O., Kalayci, M. and Cakmak, I. 2019.  Simultaneous Biofortification of Wheat with Zinc, Iodine, Selenium, and Iron through Foliar Treatment of a Micronutrient Coctail in Six countries.  Journal of Agricultural and Food Chemistry 2019, 67, 8098-8106.
  4. MacLaren, Cl, Swanepoel, P., Bennett, J., Wright, J. and Dehnen-Schmutz, K. 2019. Cover Crop Biomass Production Is More Important than Diversity for Weed Suppression.  Crop Science (59):733-748.
  5. Swanepoel, P., Le Roux, P.G.J., Agenbag, G.A., Strauss, J.A. and MacLaren, C. 2019. Seed-Drill Opener Type and Crop Residue Load Affect Canola Establishment, But Only Residue Load Affects Yield. Agronomy Journal (111) 4:1658-1665.
  6. MacLaren, C., Storkey, J., Strauss, J., Swanepoel, P. and Dehnen-Schmutz, K. 2019. Livestock in diverse cropping systems improve weed management and sustain yields whilst reducing inputs.  Journal of Applied Ecology (56):144-156.
  7. Mashamaite, C.V., Dube, Z.P. and Phiri, E.E. 2019.  Chemical root-pruning of Moringa oleifera for improved seedling growth.  South African Journal of Botany  (not yet published)
  8. Mashamaite, C.V., Mothapo, P.N., Albien, A.J., Pieterse, P.J. and Phiri, E.E. 2019. A SUSPECT under the National Environmental Management Biodiversity Act (NEM:BA) – Moringa oleifera's ecological and social costs and benefits.  South African Journal of Botany (not yet published)
  9. Zhu, X., Gopurenko, D., Serrano, M., Spencer, M.A., Pieterse, P.J., Skoneczny, D., Lepsch,i B.J., Reigosa, M.J., Gurr, G.M.,  Callaway, R.M., Weston, L.A. 2019.  Genetic evidence for plural introduction pathways of the invasive weed Paterson's curse (Echium plantagineum L.) to southern Australia. PLoS ONE 14(9): e0222696. https://doi.org/10.1371/journal. pone. 6022269.​