Horticultural Sciences
Welcome to Stellenbosch University

Dr. Elmi Lotze

​​​​Click to download: Curriculum Vitae

Publications & presentations:


Peer-Reviewed Scientific Journals

  • ​Lotze, E. & Hoffman, E.W., 2014.  Combined foliar application of calcium and boron reduces sunburn in 'Golden Delicious' apples'. Jnl Hort Sci Biotech 89(6): 607-612.

  • Lotze, E. &Turketti, S., 2014. Efficacy of foliar application of calcium products on tomatoes as defined by penetration depth of and concentration within fruit tissues. J Pl Nutr. (accepted and in press)
  • Lotze, E., R.E. Wilsdorf & Turketti, S., 2014Revisiting Ca concentration and distribution in apple fruitMalus Domestica) : Comparing transverse results from PIXE, SEM and destructive mineral analyses. J Pl Nutr. (accepted and in press)
  • Lötze, E. and Hoffman, E.W., 2014​Combined foliar application of calcium and boron reduces sunburn in 'Golden Delicious' apples' by. J. HortBiol (accepted and in press)
  • Makeredza, B., Schmeisser, M., Lötze, E.,  Steyn,W.J., 2013. Water Stress Increases Sunburn in 'Cripps' Pink' Apple. HortScience 48(4):444–447.
  • Turketti, S.S., Curry, E. & Lötze, E., 2012. Role of lenticel morphology, frequency and density on incidence of lenticel breakdown in 'Gala' apples. Sci Hort., 138, 90-95.
  • Lötze,E.,Conradie, P., Bergh,O.,  2012. Evaluating the Streif Index against commercial subjective predictions  to determine harvest date of apples in South Africa. (South African Journal of Plant and Soil 29(2), 53-56)       
  • Lötze, E., Joubert, J.  & Theron, K.I., 2008. Evaluating pre-harvest foliar calcium applications to increase fruit calcium and reduce bitter pit in 'Golden Delicious' apples. Sci. Hort. 116, 299-304.
  • Lötze, E., Sadie, A. & Theron, K.I., 2007. Increasing the efficiency of pre-harvest Ca application for bitter pit control in 'Golden Delicious' apples under South African conditions. Jnl Plant Nutr. 30:471-485.
  • Lötze, E., Sadie, A. & Theron, K.I., 2006. Determining bitter pit probability in 'Golden Delicious' through post harvest mineral content of individual fruit. Jnl HortSci Biotech 81 (2), 276-280.
  • Lötze, E., Huybrechts, C., Theron, K.I. & Valcke, R., 2006. Investigating Fluorescence Imaging as Non-destructive Method for Pre-harvest Detection of Bitter pit in Apple Fruit (MalusdomesticaBorkh). Jnl Postharvest Biol Tech, 40(3), 287-294.
  • Nicolaï, B.M., Lötze, E., Peirs, A., Scheerlinck, N. & Theron, K.I., 2006.Non-destructive measurement of bitter pit in apple fruit using NIR hyperspectral imaging. Postharvest Bio. Tech. 40, 1-6.
  • Lötze, E. & Bergh, O., 2004.Early prediction of harvest fruit size distribution of an apple and pear cultivar. SciHort, 101, 281-290.
  • Greybe, E., Bergh, O. & Ferreira, D.I., 1998. Fruit growth and cell multiplication of Royal Gala apples as a function of temperature. Appl Pl Sci., 12(1), 10-16.

 

Publications in Acta Horticulturae following presentations/posters

  • Lötze, E. & Bergh, O., 1998. The effect of winter chilling on cell division and multiplication pre-anthesis and thus on final fruit size of Royal Gala apples in South Africa. Proc XXV IHC Brussels, Belgium Aug 1998. Acta Hort 519:113-120. (Poster)
  • Lötze, E. & Bergh, O., 2005.  Early prediction of ripening and storage quality of pear fruit in South Africa. Pear conference, Stellenbosch, South Africa, February 2004. Acta Hort 671, 97-102 (Presentation).
  • Bergh, O. & Lötze, E., 2006.Mid-season prediction of fruit size distribution of 'Golden Delicious' apples in South Africa.7th Modelling symposium, Copenhagen, Denmark, June 2004. Acta Hort 707, 217- 222 (Presentation)
  • Lötze, E. & Theron, K.I., 2006.  Dynamics of Calcium uptake with pre-harvest sprays to reduce bitter pit in Golden Delicious.5th International symposium on mineral nutrition of fruit plants. Acta Hort 721, 313-319.
  • Marcos, T, Lötze, E, Theron, K.I. & Jacobs, G., 2008. Improving the Prediction Model for Harvest Maturity of 'William's Bon Chretien' Pears.  7th ISHS Modelling symposium, 2-6 July 2007, Einsedln, Switzerland. Acta Hort. 803,273-282
  • Lötze, E., Joubert, J.  & Theron, K.I., 2008. Assessment of pre-harvest physiological infiltration methods for predicting commercial bitter pit in 'Braeburn' and 'Golden Delicious'.19-23 May 2008, Faro, Portugal. (Presentation)
  • Midgley, S.J.E. & Lötze, E. 2009. Historical and future impacts of warming on chill unit accumulation in the Western Cape.  SASHS Stellenbosch Jan 2009. (Presentation)
  • Lötze, E., Conradie, P.  & Theron, K.I., 2009. Factors contributing to the development of lenticel break down in 'Royal Gala'. SASHS Stellenbosch Jan 2009. (Presentation)
  • Lötze, E. and Kotze, W.P., 2010.Pre-harvest management of fruit quality with emphasis on efficient nutrient uptake and distribution to the fruit. Workshop: Oman - South Africa scientific &technical bilateral cooperation program. Integrated approaches to fruit production and postharvest management in arid climates. May 29-31, 2010. (Proceedings)
  • Lötze, E., Joubert, J.  & Theron, K.I., 2010. Assessment of pre-harvest physiological infiltration methods for predicting commercial bitter pit in 'Braeburn' and 'Golden Delicious'.19-23 May 2008, Faro, Portugal. Acta Hort. 868,347-351.
  • Lötze, E., Sadie, A. &Theron, K.I., 2011. Development of a Pre-harvest Prediction Model for Ripening of 'Forelle' Pears (Pyrus communis).XI International Pear Symposium, November 23-26, 2010, Neuquen, Argentina (Presentation). Acta Hort.909:  693-969
  • Midgley, S.J.E. and Lötze, E., 2011. Climate change in the Western Cape of South Africa: Trends, projections and implications for chill unit accumulation. Acta Hort. 903, 1127-1134
  • Turketti, S.S., Lötze, E., 2013. Evaluation of two biostimulants (Vermi paste and seaweed extract) on transplant shock and growth performance of potted tomato plants cv 'Money Maker'. SASHS Combined congress, 21-25 Jan 2013.Durban.
  • Kotze, W.P.,Van der Merwe, J.D.P.,Nicholson, A.F, Schmeisser, M., Taylor, N.J.and Lötze, E.,  2013. Changes in Phosphorus status of 'Cripps' Pink'apple trees after application of mulches.  II International Symposium of Organic Matter Management & Compost Use in Horticulture in Santiago, Chile from 21-24th of October 2013. Acta Hort in press
  • Wilsdorf, R.E., Lötze, E., Mesjasz-Przybylowicz, J., Przybylowicz, W.J., 2013. Mapping the distribution of calcium on apple tissue with proton-induced x-ray emission - after applicaion of additional pre-harvest foliar or soil calcium. Acta Hort 984: 347-355.
  • Lötze, E. and Kotze, W.P., 2014. The effect of organic and inorganic mulches on soil environment, root development and nutrient uptake of mature apple trees.  International Symposium on Organic Matter Management and Compos Use in Horticulture.  Adelaide, Australia March 2011. Acta Hort 1018: 391-400.

 

Invited speaker / Presentations

Invited speaker international

  • Lötze, E.,2009.  Mechanisms for Ca uptake in apple trees (Mecanismos de calcio).XV International symposium on apples, 4-6 Nov 2009. Cd Cuauthemoc, Chih., Mexico.
  • Lötze, E., 2009.  Application of foliar Ca to apple trees to reduce Bitter pit and increase fruit quality (Aplicaciones de calcio). XV International symposium on apples, 4-6 Nov 2009.Cd Cuauthemoc, Chih., Mexico.

 

Presentations International

  • Lötze, E., Huybrechts, C., Theron, K.I. & Valcke, R., 2003. Gebruik van fluorescentiebeeldanalysevoor-oogstperiode - voorvoorspelling van bitterpit .LUC-werkswinkel, Diepenbeeck, Belgium March 2003.
  • Lötze, E.,Peirs, A., Theron, K.I. & Nicolai, B.M., 2006. NIR-spectroscopy: a non-destructive prediction of bitter pit pre‑harvest. SASHS, Stellenbosch, South Africa, 29th May 2006. (Presentation).
  • Lötze, E., 2007. Introduction and focus areas of the department of Horticultural Science at the University of Stellenbosch.ValentBioSciences, Chicago, 10th August 2007.
  • Lötze, E., 2007. Introduction and focus areas of the department of Horticultural Science at the University of Stellenbosch.  WSU, Wenatchee, 14th August 2007.
  • Lötze, E., Joubert, J.  & Theron, K.I., 2008. Evaluating pre-harvest foliar calcium applications to increase fruit calcium and reduce bitter pit in 'Golden Delicious' apples. SASHS, Graham's Town, South Africa, 21-24 Jan 2008.p65. (Presentation)
  • Lötze , E. and Bergh, O., 2011.Developing a prediction model for seasonal harvest volumes for the peach preserve industry in South Africa. IXth International Symposium on Modelling in Fruit Research and Orchard Management in Saint-Jean-sur-Richelieu from 19 to 23 June 2011.

 

Presentations national

  • Lötze, E. & Bergh, O., 2002. Early prediction of fruit size distribution of apples at harvest. CPA May 2002.
  • Lötze, E. & Bergh, O., 2003.  Vroeë voorspellings van rypwording en opbergingskwaliteit van kernvrugte. KPV Mei 2003.
  • Lötze, E., Joubert, J.  & Theron, K.I., 2006.  Timing of foliar Calcium (Ca(NO3)2) applications pre-harvest for reduction bitter pit in Golden Delicious.  Yara field day, 2th August 2006, Vyeboom, South Africa.
  • Lötze, E., Joubert, J.  & Theron, K.I., 2006.  Efficiency of Pre-harvest Ca sprays to reduce bitter pit in Golden Delicious.  CPA field day, Elgin October 2006.
  • Lötze, E., Joubert, J.  & Theron, K.I., 2007.  Efficiency of Pre-harvest Ca sprays to reduce bitter pit in Golden Delicious.  UAP training day, Paarl 21st June 2007.
  • Lötze, E., 2007.The ABC of conducting boereproewe. CPA Technical Symposium 21 November 2007.
  • Lötze, E., 2009. Ca bestuur van bitter pit by Golden Delicious. Nexus program vir wingerd- en vrugte    opleiding.27-29 Mei 2009. Paarl.
  • Lötze, E., 2010. Toediening van Ca om die [Ca] in vrugte te verhoog en bitterpitvoorkoms in appels te verlaag. Yaraopleiding, Paarl, Maart 2010.
  • Lötze, E.,2010. Invloed van klimaatsfaktore op normale fisiologiese prosesse. Terason sagtevrugteopleiding, Wellington, 3 Junie 2010.
  • Lötze, E., Wilsdorf, R.E. and Britz, A., 2010. Seasonal changes in concentration and distribution of Ca2+ in apple fruit after soil and foliar calcium applications.Stellenbosch, Yara navorsingsterugvoering 9 Junie 2010.
  • Lötze, E. and Kotze, W.P., 2010. The influence of mulches on efficiency of nutrient uptake and distribution to apple fruit. Navorsingsterugvoering Lourensford Estate, June 2010.
  • P.C. Carmichael, K.I. Theron, E. M. Crouch, E. Lötze, 2011.Evaluation of maturity indices and their rates of change to predict optimum harvest maturity of 'Forelle' pears. SASHS, 17-20 Jan 2011. Pretoria.
  • W. P. Kotze, M. Schmeisser, E. Lötze, 2011. Effects of mulching with emphasis on factors influencing soil fertility, plant nutrition and fruit quality.SASHS, 17-20 Jan 2011. Pretoria
  • Wilsdorf, R.E., Mesjasz-Przybylowicz, J., Przybylowicz, W.J., & Lötze, E., 2011.Mapping the distribution of calcium in apple tissue with proton-induced x-ray emission – after application of additional foliar or soil calcium.SASHS, 17-20 Jan 2011. Pretoria.
  • E. Lötze, P.Conradie, O.Bergh, 2011. Evaluating the Streif Index against commercial subjective predictions to determine harvest date of apples in South Africa.SASHS, 17-20 Jan 2011. Pretoria.
  • R.E. Wilsdorf, J. Mesjasz-Przybylowicz, W.J. Przybylowicz, E. Lötze, 2011.  Mapping the distribution of calcium in apple tissue with proton-induced X-ray emission – after application of additional foliar or soil calcium. Post Graduate Symposium. iThemba LABS, Somerset West. 1 June 2011.
  • E. Lötze, 2011. Reserve status of fruit trees. Innofruit.Vyeboom. 5 May 2011.
  • E. Lötze, 2011. Advances in Ca application in deciduous fruit production. FSSA Annual Congress. Somerset West. 2 June 2011.
  • E. Lötze, 2011. Holistic approach to Ca application. Terason sagtevrugteopleiding, Wellington, 3 June 2011.
  • Lötze, E., Kotze, WP, 2011.Pre-harvest management of fruit quality (emphasis on efficient nutrient uptake and distribution to the fruit) Fieldmen's meeting 5th Aug 2011, Stellenbosch.    
  • Lötze, E., Kotze, WP, Nicholson, A, Van der Merwe, PW, 2011. Pre-harvest management of fruit quality after application of mulches. Kromco technical information day,29 Nov 2011, Elgin.
  • Lötze, E., Kotze, WP, Nicholson, A, Van der Merwe, PW,2012. Choosing mulches: Horses for courses. Fruitgro Science Technical Symposium 2012, 6th June, Spier, Stellenbosch.
  • Lötze, E., 2012. Foliar Ca applications on Tomatoes & GD. Nexus Kern- en steenvrugteopleiding. 14 Junie 2012. Bayerlokaal, Paarl.
  • Lötze, E., 2013. Rol van Ca by beheer van bitterpit in appels. 12 Des 2013. Terason besprekingsgroep. Ideafruit, Vyeboom.
  • Lötze, E., 2014. Role of mulches in irrigation of deciduous crops. Agrimotion Short Course, 6 Aug 2014, Somerset West.

 

Posters presented

International

  • North, M., Lötze, E. and Joubert, J., 2007. Do adjuvents and application date of calcium nitrate sprays effect 'Golden Delicious' apple fruit calcium and nitrogen concentration? IAAS August 2007, Columbus, Ohio.
  • Midgley, S.J.E. and Lötze, E. 2008. Climate Change in the Western Cape of South Africa: Trends, Projections and Implications for Chill Unit Accumulation.9th International Symposium on Integrating Canopy, Rootstock and Environmental Physiology in Orchard Systems, Geneva, New York, USA. 2 – 9 Aug 2008.
  • Lötze, E. and Theron, K. I., 2009. Investigating factors contributing to the development of lenticel break down in 'Royal Gala' apples in South Africa. ASHS July 2009 St Louis Missouri, USA
  • Lötze, E. and GFA Lötze, 2011.Applying a growing degree hour model from California to predict fruit size of canning peaches in South Africa.IXth International Symposium on Modelling in Fruit Research and Orchard Management in Saint-Jean-sur-Richelieu from 19 to 23 June 2011.
  • Lötze, G.F.A., Pieterse, E., Wilding, M., Van Kerwel, W. and Lötze, E., 2013. Utilising laboratory apple waste for composting. ISHS IInd International Symposium of Organic Matter Management & Compost Use in Horticulture in Santiago, Chile from 21-24th of October 2013.
  • Lötze, E. & Steyn, W.J., 2014.Quantifying differences in growth selected apple rootstocks under extreme simulated spring temperatures in environmental chambers.ISHS International Symposium on Physiological Principles & their application to fruit production. Geneva, New York, USA 26-28th of March 2014.

 

National

  • Huybrechts, C., Lötze, E. & Theron, K.I. &Valcke, R., 2002.  Fluorescence imaging of physiological disorder of apple fruit. CPA May 2000. (Poster)


Popular Articles

  • Greybe, E. & Van Wyk, D., 1997.  Klimaatsdata'n handige boerdery hulpmiddel. Sagtevrugteboer (SVB) Feb 1997, 62-63.
  • Greybe, E., 1997.  Koue-eenhede  handige hulpmiddel om kwellings te voorkom. SVB Jul., 1997, 250-251.
  • Greybe, E., 1997.  Reduced chemical application possible with new prediction model. Deciduous Fruit Grower (DFG) Nov 1997, 431.
  • Greybe-Lötze, E., 1999.  Introduction to chill unit models. DFG Aug 1999, 14-17.
  • Greybe-Lötze, E. & Bergh, O., 1999. Praktiese benutting van groeikrommes tydens handuitdunning.  SVB Des 1999, 4-5,16.
  • Lötze, E., 2001.Opti-size: can a grower afford not to use this opportunity. DFG Oct 2001, 51.
  • Lötze, E. & Bergh, O., 2003.  Fruit growth curves and weekly tables for 'Fuji' and Cripps' Pink' under Western Cape conditions. SA Fruit Jnl Dec/Jan 2003, 16-20.
  • Lötze, E. & Theron, K.I., 2003. Bitterpit by Golden Delicious appels: 'n opname onder sagtevrugteprodusente in die Wes-Kaap.  SA Fruit Jnl Aug/Sep 2003, 15-18.
  • Lötze, E. & Bergh, O., 2004. Summary of the quality prediction project results for 2003/04 for pome fruit. SA Fruit Jnl Okt/Nov 3:5 28-29.
  • Lötze, E., 2006.Identification of bitter pit in apples. Brochure for DFPT Research.
  • Lötze, E. & Theron, K.I., 2006.Existing Pre-harvest Predictions Methods and Models for Bitter Pit Incidence: an abstract.  Brochure for DFPT Research.
  • Lötze, E. & Theron, K.I., 2006.Existing Pre-harvest Predictions and Models for Bitter Pit Incidence.SA Fruit Jnl, July 18-25.
  • Lötze, E., North, M. &Joubert, J. 2007. Adjuvants and application date of calcium nitrate sprays effect 'Golden Delicious' fruit calcium concentration.SA FrJnl.  Dec 07/Jan 08. 6(6) 22-25.
  • Curry, E., Schrader, L.E., Hanrahan, I., Lötze, E., 2008. Lenticel related disorders. S.A. Fr. Jnl, 6(6), 15.
  • Lötze, E. and Theron, K. I., 2009. Investigating factors contributing to the development of lenticel break down in 'Royal Gala' apples in South Africa. S.A. Fr. Jnl., 8(6). 67-68
  • Lötze, E., 2012. Opinion : How to ensure calcium intake for good fruit. FreshFruitPortal.com. The voice of the Southern Hemisphere. July 25, 2012/ Week N° 30.
  • Lötze, E., Bergh, O., 2012. Are chilling units still relevant for the SA fruit industry. Fresh Notes. A Technical update published by Fruitgro science. 64 : July 2012.
  • Lötze, E., Bergh, O., 2012. Are chilling units still relevant for the SA fruit industry. SA FR Jnl 11(4) 65-66.
  • Lötze, E., 2012. A comparison between two, locally produced seaweed biostimulants regarding nutrient and alginic acid composition and biological rooting response.SA Fr Jnl 11(4) : 70-72.
  • Turketti, S. and  Lötze, E.,  2013. Visual identification of damage associated with lenticels in apples after cold storage. SA Fr Jnl 12(2) Apr/May 63.

 

Radio

2013  RSG : Ekoforum : Die maak van kompos

 

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