Horticultural Sciences
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Publications

​​​Publications 2016​

Publications 2017

Publications 2018​

​​

2016​

Journal Articles (subsidised)
ARENDSE E, FAWOLE OA, MAGWAZA LS, OPARA UL. Estimation of the density of pomegranate fruit and their fractions using X-ray computed tomography calibrated with polymeric materials. BIOSYSTEMS ENGINEERING 2016; 148:148-156.
ARENDSE E, FAWOLE OA, MAGWAZA LS, OPARA UL. Non-destructive characterization and volume estimation of pomegranate fruit external and internal morphological fractions using X-ray computed tomography. JOURNAL OF FOOD ENGINEERING 2016; 186:42-49.
BELAY ZA, CALEB OJ, OPARA UL. Modelling approaches for designing and evaluating the performance of modified atmosphere packaging (MAP) systems for fresh produce: A review. Food Packaging and Shelf Life 2016; 10:1-15.
BERRY TM, DEFRAEYE T, NICOLAI BM, OPARA UL. Multiparameter Analysis of Cooling Efficiency of Ventilated Fruit Cartons using CFD: Impact of Vent Hole Design and Internal Packaging. Food and Bioprocess Technology 2016; 9(9):1481-1493.
BLANCKENBERG A, MULLER M, THERON KI, CROUCH EM, STEYN WJ. Harvest maturity and ripeness differentially affects consumer preference of 'Forelle', 'Packham's Triumph' and 'Abate Fetel' pears (Pyrus communis L.)SCIENTIA HORTICULTURAE 2016; 207:131-139.
DEFRAEYE T, NICOLAI BM, KIRKMAN W, MOORE S, VAN NIEKERK S, VERBOVEN P, CRONJE PJR. Integral performance evaluation of the fresh-produce cold chain: A case study for ambient loading of citrus in refrigerated containers. POSTHARVEST BIOLOGY AND TECHNOLOGY2016; 112(1):1-13.
DELELE MA, NUYTTENS D, DUGA AT, TSIGE AA, LEBEAU F, NICOLAI BM, VERBOVEN P. Predicting the dynamic impact behaviour of spray droplets on flat plant surfaces. Soft Matter 2016; 12:7195-7211.
FADIJI TS, COETZEE CJ, CHEN L, CHUKWU O, OPARA UL. Susceptibility of apples to bruising inside ventilated corrugated paperboard packages during simulated transport damage. POSTHARVEST BIOLOGY AND TECHNOLOGY 2016; 118:111-119.
FADIJI TS, COETZEE CJ, OPARA UL. Compression strength of ventilated corrugated paperboard packages: Numerical modelling, experimental validation and effects of vent geometric design. BIOSYSTEMS ENGINEERING 2016; 151:231-247.
FADIJI TS, COETZEE CJ, PATHARE P, OPARA UL. Susceptibility to impact damage of apples inside ventilated corrugated paperboard packages: Effects of package design. POSTHARVEST BIOLOGY AND TECHNOLOGY 2016; 111:286-296.
FAWOLE OA, OPARA UL. Stability of total phenolic concentration and antioxidant capacity of extracts from pomegranate co-products subjected to in vitro digestion. BMC Complementary and Alternative Medicine 2016; 16:358, 10 pages.
GOEDHALS-GERBER LL, HAASBROEK LM, VAN DYK E, DODD MC. Case Study: Investigating the causes of temperature breaks in South African summer fruit export cold chains. PONTE 2016; 72(8):249-262.
HENGARI SN, THERON KI, MIDGLEY S, STEYN WJ. Differential dependence of apple (Malus domestica Borkh.) cultivars on the xanthophyll cycle for photoprotection. South African Journal of Plant and Soil 2016; 33(1):69-76.
HU MH, DONG QL, LIU BL, OPARA UL. Prediction of mechanical properties of blueberry using hyperspectral interactance imaging. POSTHARVEST BIOLOGY AND TECHNOLOGY 2016; 106:1-10.
JIAN C, CHEN L, OPARA UL. Numerical simulation of powder dispersion performance by different mesh types. Key Engineering Materials 2016; 680:82-85.
KELLERMAN M, JOUBERT J, ERASMUS A, FOURIE PH. The effect of temperature, exposure time and pH on imazalil residue loading and green mould control on citrus through dip application. POSTHARVEST BIOLOGY AND TECHNOLOGY 2016; 121:159-164.
LOTZE E, HOFFMAN EW. Nutrient composition and content of various biological active compounds of three South African-based commercial seaweed biostimulants. JOURNAL OF APPLIED PHYCOLOGY 2016; 28:1379-1386.
MAGWAZA LS, OPARA UL, CRONJE PJR, LANDAHL S, ORDAZ ORTIZ J, TERRY LEON. Rapid methods for extracting and quantifying phenolic compounds in citrus rinds. Food Science and Nutrition 2016; 4(1):4-10.
MDITSHWA A, FAWOLE OA, VRIES F, VAN DER MERWE K, CROUCH EM, OPARA UL. Classification of 'Granny Smith' apples with different levels of superficial scald severity based on targeted metabolites and discriminant analysis. JOURNAL OF APPLIED BOTANY AND FOOD QUALITY 2016; 89:49-55.
MOORE S, KIRKMAN W, ALBERTYN S, HATTINGH V. Comparing the Use of Laboratory-Reared and Field-Collected Thaumatotibia leucotreta (Lepidoptera: Tortricidae) Larvae for Demonstrating Efficacy of Postharvest Cold Treatments in Citrus Fruit. JOURNAL OF ECONOMIC ENTOMOLOGY 2016; 109(4):1571-1577.
MOORE S, KIRKMAN W, ALBERTYN S, LOVE CN, COETZEE JA, HATTINGH V. Partial cold treatment of citrus fruit for export risk mitigation for Thaumatotibia leucotreta (Lepidoptera: Tortricidae) as part of a systems approach. JOURNAL OF ECONOMIC ENTOMOLOGY 2016;109(4):1578-1585.
MOORE S, KIRKMAN W, HATTINGH V. Verification of Inspection Standards and Efficacy of a Systems Approach for Thaumatotibia leucotreta (Lepidoptera: Tortricidae) for Export Citrus From South Africa. JOURNAL OF ECONOMIC ENTOMOLOGY 2016; 109(4):1564-1570.
MPHAHLELE RR, CALEB OJ, FAWOLE OA, OPARA UL. Effects of different maturity stages and growing locations on changes in chemical, biochemical and aroma volatile composition of 'Wonderful' pomegranate juice. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE2016; 96(3):1002-1009.
MPHAHLELE RR, FAWOLE OA, MAKUNGA NP, OPARA UL. Effect of drying on the bioactive compounds, antioxidant, antibacterial and antityrosinase activities of pomegranate peel. BMC Complementary and Alternative Medicine 2016; 16:143, 12 pages.
MPHAHLELE RR, FAWOLE OA, MOKWENA LM, OPARA UL. Effect of extraction method on chemical, volatile composition and antioxidant properties of pomegranate juice. SOUTH AFRICAN JOURNAL OF BOTANY 2016; 103:135-144.
MPHAHLELE RR, FAWOLE OA, OPARA UL. Influence of packaging system and long term storage on physiological attributes, biochemical quality, volatile composition and antioxidant properties of pomegranate fruit. SCIENTIA HORTICULTURAE 2016; 211:140-151.
MUNHUWEYI K, LENNOX CL, MEITZ-HOPKINS J, CALEB OJ, OPARA UL. Major diseases of pomegranate (Punica granatum L.), their causes and management-A review. SCIENTIA HORTICULTURAE 2016; 211:126-139.
MUNHUWEYI K, OPARA UL, SIGGE GO. Postharvest losses of cabbages from retail to consumer and the socio-economic and environmental impacts. British Food Journal 2016; 118(2):286-300.
MUZIRI T, THERON KI, CANTRE B, WANG ZI, VERBOVEN P, NICOLAI BM, CROUCH EM. Microstructure analysis and detection of mealiness in 'Forelle' pear (Pyrus communis L.) by means of X-ray computed tomography. POSTHARVEST BIOLOGY AND TECHNOLOGY 2016;120:145-156.
OPARA UL, CALEB OJ, UCHECHUKWU-AGUA AD. Evaluating the Impacts of Selected Packaging Materials on the Quality Attributes of Cassava Flour. JOURNAL OF FOOD SCIENCE 2016; 81(2):324-331.
STANDER OPJ, CRONJE PJR. Reviewing the commercial potential of hand thinning in citrus with a cost-benefit analysis of summer hand thinning of 'Nadorcott' Mandarin. HORTTECHNOLOGY 2016; 26(2):206-212.
TSIGE AA, BESSEMANS N, GRUYTERS W, GWANPUA SG, SCHENK A, DE ROECK A, DELELE MA, VERBOVEN P, NICOLAI BM. Analysis of the spatiotemporal temperature fluctuations inside an apple cool store in response to energy use concerns. INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID 2016; 66:156-168.
VAN DAEL M, LEBOTSA PS, HERREMANS E, VERBOVEN P, SIJBERS J, OPARA UL, CRONJE PJR, NICOLAI BM. A segmentation and classification algorithm for online detection of internal disorders in citrus using X-ray radiographs. POSTHARVEST BIOLOGY AND TECHNOLOGY2016; 112:205-214.
Journal Articles (NON-subsidised)
HOFFMAN EW, HUYSAMER AJ, BEZUIDENHOUT K. Cape Flora - a hidden treasure of the Cape Floristic Kingdom claiming its place as exciting international floricultural products. Chronica Horticulturae 2016; 56(3):23-27.
PATHARE P, BERRY TM, OPARA UL. Changes in moisture content and compression strength of ventilated corrugated packaging used for handling apples. Packaging Research 2016; 1:1-16.
STEYN WJ, THERON KI, VOIGHT F, UNGERER F. Nursery trees: When it is not the nurseryman's fault. SA Fruit Journal 2016; 15(3):66-69.
THERON KI, KIRSTEIN DL, STEYN WJ. Are handheld bloom thinners a viable option to thin apple trees?. SA Fruit Journal 2016; 15(5):86-87.
Proceedings International
FAWOLE OA, OPARA UL, CHEN L. Discrimination of pomegranate fruit at different harvest dates by instrumental and sensory measurements in consideration of long supply chains. In: Golding JS, Heyes J, Toivonen PM, Avanzato D, Harker R (eds.) XXIX International Horticultural Congress on Horticulture: Sustaining Lives, Livelihoods and Landscapes (IHC2014): International Symposia on Postharvest Knowledge for the Future and Consumer and Sensory Driven Improvements to Fruits and Nuts, Brisbane, Australia, Acta Horticalturae 2016: 469-476.
IDUN I, MULLER M, THERON KI, NAES T, VAN DER RIJST M, STEYN WJ. Drivers of consumer preference for apple eating quality and appearance among South African consumers of different ethnic and age groups. In: Golding JB, ET AL (eds.) XXIX International Horticulture Congress on Horticulture: Sustaining Lives, Livelihoods and Landscapes (IHC2014): International Symposium on Postharvest knowledge for the future and consumer and sensory driven improvements to fruits and nuts, Brisbane, Australia, ISHS 2016: 477-482.
MAGWAZA LS, OPARA UL. Non-destructive quantification of pomegranate internal quality structures using X-ray computed tomograph. In: Wunsche JN, Tranbarger TJ (eds.) XXIX International Horticultural Congress on Horticulture: Sustaining Lives, Livelihoods and Landscapes (IHC2014): International Symposia on Abscission Processes in Horticulture and Non-Destructive Assessment of Fruit Attributes, Brisbane, Australia, Acta Horticalturae 2016: 135-140.
MUNHUWEYI K, LENNOX CL, MEITZ-HOPKINS J, CALEB OJ, SIGGE GO, OPARA UL. In vitro effects of crab shell chitosan against mycelial growth of Botrytis sp., Penicillium sp. and Pilidiella granati. In: Ippolito A, ET AL (eds.) III IS on Post Harvest Pathology: Using Science to increase food availability, Bari, Italy, ISHS 2016: 403-407.
THERON KI, DE VILLIERS MHJ, STEYN WJ. The effect of mechanical bloom thinning with the Darwin 300TM, on the time required for hand thinning, yield, fruit size and fruit quality in 'Zephyr' nectarine. In: van Hooijdonk BM, Tustin DS (eds.) International Symposia on the Physiology of Perennial Fruit Crops and Production Systems and Mechanisation, Precision Horticulture and Robotics, Brisbane, Australia, ISHS 2016: 631-637.
THERON KI, STEENKAMP H, LOTZE GFA, STEYN WJ. The efficacy of chemical and mechanical thinning strategies for 'African Rose' Japanese plum (Prunus salacina Lindl.). In: Costa G (ed.) Acta Horticulturae 1138. EUFRIN Thinning Working Group Symposia, Eisiedelh, Switzerland, International Society for Horticultural Science (ISHS) 2016: 61-68.
VAN DAEL M, HERREMANS E, VERBOVEN P, OPARA UL, NICOLAI BM, LEBOTSA PS. Automated online detection of granulation in oranges using X-ray radiographs. In: Wunsche JN, Tranbarger TJ (eds.) XXIX International Horticultural Congress on Horticulture: Sustaining Lives, Livelihoods and Landscapes (IHC2014): International Symposia on Abscission Processes in Horticulture and Non-Destructive Assessment of Fruit Attributes (Acta Horticulturae 1119), Brisbane, Australia, Acta Horticalturae 2016: 179-182.
VAN DER MERWE GJ, THERON KI, KOTZE WP, STEYN WJ. Evaluating the use of harvesting systems and worker platforms in the South African deciduous fruit industry. In: van Hooijdonk BM, Tustin DS (eds.) International Symposia on the Physiology of Perennial Fruit Crops and Production Systems and Mechanisation, Precision Horticulture and Robotics, Brisbane, Australia, ISHS 2016: 597-603.
Creative Works
KRITZINGER I, LOTZE E, JOOSTE MM. oral poster presentation. The use of computed tomography (CT) scans to evaluate broken stones in a susceptible Japanese plum cultivar. VIII International Postharvest Symposium, Cartagena, Spain, Cartagena, Spain 2016.
Doctoral completed
IDUN I. Preference of South African consumers for the eating quality and appearance of apples. PhD (Agric), 2016. 293 pp. Promotor: STEYN WJ. Medepromotor: THERON KI.
MPHAHLELE RR. Impacts of preharvest and postharvest handling and processing on bioactive compounds and functional properties of pomegranate fruit fractions and by-products. PhD (Agric), 2016. 278 pp. Promotor: OPARA UL. Medepromotor: FAWOLE OA.
MUZIRI T. 'Forelle' mealiness studies on cell shape and size cell wall Ca2+ and non-destructive identification techniques. PhD (Agric), 2016. 197 pp. Promotor: CROUCH EM. Medepromotor: THERON KI.
Masters completed
BLANCKENBERG A. Consumer studies on pears. MScAgric, 2016. 0 pp. Studieleier: STEYN WJ. Medestudieleier: THERON KI.
CHIGWAYA K. Moisture loss studies in nectarines (Prunus persica var. nectarine). MScAgric, 2016. 118 pp. Studieleier: THERON KI. Medestudieleier: JOOSTE MM, De Kock A.
EHLERS JL. Post-harvest rind pitting on 'Valencia' oranges. MScAgric, 2016. 0 pp. Studieleier: CRONJE PJR. Medestudieleier: THERON KI.
KRITZINGER I. A study of broken stones in plums. MScAgric, 2016. 124 pp. Studieleier: JOOSTE MM. Medestudieleier: LOTZE E.
RAMOKONYANE TM. Dynamic controlled atmosphere and its effect on superficial scald on 'Granny Smith' apples and 'Packham's Triumph' pears. MScAgric, 2016. 192 pp. Studieleier: OPARA UL. Medestudieleier: CROUCH EM, van der Merwe K, Vries F.
VAN ZYL FJ. Apple root growth dynamics and fertilizer uptake. MScAgric, 2016. 143 pp. Studieleier: LOTZE E.

2017​

Journal Articles (subsidised)
ARENDSE E, FAWOLE OA, MAGWAZA LS, NIEUWOUDT H, OPARA UL. Development of calibration models for the evaluation of pomegranate aril quality by Fourier-transform near infrared spectroscopy combined with chemometrics. BIOSYSTEMS ENGINEERING 2017; 159:22-32.
ARENDSE E, FAWOLE OA, MAGWAZA LS, OPARA UL. Non-destructive prediction of internal and external quality attributes of fruit with thick rind: A review. JOURNAL OF FOOD ENGINEERING 2017; 217:11-23.
ATUKURI J, FAWOLE OA, OPARA UL. Effect of exogenous fludioxonil postharvest treatment on physiological response, physico-chemical, textural, phytochemical and sensory characteristics of pomegranate fruit. Journal of Food Measurement and Characterization 2017;11(3):1081-1093.
BELAY ZA, CALEB OJ, MAHAJAN PV, OPARA UL. Application of simplex lattice mixture design for optimization of active modified atmosphere for pomegranate arils (cv. Wonderful) based on microbial criteria. Food Packaging and Shelf Life 2017; 14:12-17.
BELAY ZA, CALEB OJ, OPARA UL. Enzyme kinetics modelling approach to evaluate the impact of high CO2 and super-atmospheric O2 concentrations on respiration rate of pomegranate arils. CyTA-Journal of Food 2017; 15(4):608-616.
BELAY ZA, CALEB OJ, OPARA UL. Impacts of low and super-atmospheric oxygen concentrations on quality attributes, phytonutrient content and volatile compounds of minimally processed pomegranate arils (cv. Wonderful). POSTHARVEST BIOLOGY AND TECHNOLOGY 2017;124:119-127.
BERRY TM, FADIJI TS, DEFRAEYE T, OPARA UL. The role of horticultural carton vent hole design on cooling efficiency and compression strength: A multi-parameter approach. POSTHARVEST BIOLOGY AND TECHNOLOGY 2017; 124:62-74.
COOK NC, CALITZ FJ, ALLDERMAN LA, STEYN WJ, LOUW ED. Diverse patterns in dormancy progression of apple buds under variable winter conditions. SCIENTIA HORTICULTURAE 2017; 226:307-315.
CRONJE PJR, ZACARIAS L, ALFEREZ F. Susceptibility to postharvest peel pitting in Citrus fruits as related to albedo thickness, water loss and phospholipase activity. POSTHARVEST BIOLOGY AND TECHNOLOGY 2017; 123:77-82.
DEFRAEYE T, WU W, PRAWIRANTO K, FORTUNATO G, KEMP S, HARTMANN S, CRONJE PJR, VERBOVEN P, NICOLAI BM. Artificial fruit for monitoring the thermal history of horticultural produce in the cold chain. JOURNAL OF FOOD ENGINEERING 2017; 215:51-56.
DZIKITI S, GUSH M, TAYLOR N, VOLSCHENK T, MIDGLEY SJE, LOTZE E, SCHMEISSER M, DOKO Q. Measurement and modelling of water use by high yielding apple orchards and orchards of different age groups in the winter rainfall areas of South Africa. Acta Horticulturae2017; 1150(1):31-37.
FAWOLE OA, OPARA UL, CHEN L. Discrimination of pomegranate fruit at different harvest dates by instrumental and sensory measurements in consideration of long supply chains. Acta Horticulturae 2016; 1120(1):469-476.
FOURIE PH, SCHUTTE GC, CARSTENS E, HATTINGH V, PAUL I, MAGAREY RD, GOTTWALD TR, YONOW T, KRITICOS DJ. Scientific critique of the paper "Climatic distribution of citrus black spot caused by Phyllosticta citricarpa. A historical analysis of disease spread in South Africa" by Martínez-Minaya et al. (2015). EUROPEAN JOURNAL OF PLANT PATHOLOGY 2017; 148:497-502.
GETAHUN S, TSIGE AA, DELELE MA, MEYER CJ, OPARA UL. Analysis of airflow and heat transfer inside fruit packed refrigerated shipping container: Part I - Model development and validation. JOURNAL OF FOOD ENGINEERING 2017; 203:58-68.
GETAHUN S, TSIGE AA, DELELE MA, MEYER CJ, OPARA UL. Analysis of airflow and heat transfer inside fruit packed refrigerated shipping container: Part II - Evaluation of apple packaging design and vertical flow resistance. JOURNAL OF FOOD ENGINEERING 2017; 203:83-94.
GUARNACCIA V, GROENEWALD JZ, LI H, GLIENKE C, CARSTENS E, HATTINGH V, FOURIE PH, CROUS PW. First report of Phyllosticta citricarpa and description of two new species, P. paracapitalensis and P. paracitricarpa, from citrus in Europe. STUDIES IN MYCOLOGY 2017;87:161-185.
KRITZINGER I, LOTZE E, JOOSTE MM. Stone hardening and broken stones in Japanese plums (Prunus salicina Lindl.) evaluated by means of computed tomography scans. SCIENTIA HORTICULTURAE 2017; 221:1-9.
MAGWAZA LS, MDITSHWA A, TESFAY SZ, OPARA UL. An overview of preharvest factors affecting vitamin C content of citrus fruit. SCIENTIA HORTICULTURAE 2017; 216:12-21.
MAGWAZA LS, OPARA UL. Non-destructive quantification of pomegranate internal quality structures using X-ray computed tomograph. Acta Horticulturae 2016; 1119(1):135-139.
MARAIS ML, SMIT Y, KOEN N, LOTZE E. Are the attitudes and practices of foodservice managers, catering personnel and students contributing to excessive food wastage at Stellenbosch University?. South African Journal of Clinical Nutrition 2017; 30(3):60-67.
MBILI NC, OPARA UL, LENNOX CL, VRIES F. Citrus and lemongrass essential oils inhibit Botrytis cinerea on ‘Golden Delicious’, ‘Pink Lady’ and ‘Granny Smith’ apples. Journal of Plant Diseases and Protection 2017; 124:499-511.
MDITSHWA A, FAWOLE OA, VRIES F, VAN DER MERWE K, CROUCH EM, OPARA UL. Impact of dynamic controlled atmospheres on reactive oxygen species, antioxidant capacity and phytochemical properties of apple peel (cv. Granny Smith). SCIENTIA HORTICULTURAE 2017;216:169-176.
MDITSHWA A, FAWOLE OA, VRIES F, VAN DER MERWE K, CROUCH EM, OPARA UL. Minimum exposure period for dynamic controlled atmospheres to control superficial scald in ‘Granny Smith’ apples for long distance supply chains. POSTHARVEST BIOLOGY AND TECHNOLOGY2017; 127:27-34.
MDITSHWA A, FAWOLE OA, VRIES F, VAN DER MERWE K, CROUCH EM, OPARA UL. Repeated application of dynamic controlled atmospheres reduced superficial scald incidence in ‘Granny Smith’ apples. SCIENTIA HORTICULTURAE 2017; 220:168-175.
MDITSHWA A, MAGWAZA LS, TESFAY SZ, OPARA UL. Postharvest factors affecting vitamin C content of citrus fruits: A review. Scientia Horticulturae 2017; 218:95-104.
MOORE S, KIRKMAN W, STEPHEN PR, ALBERTYN S, LOVE CN, GROUT TG, HATTINGH V. Development of an improved postharvest cold treatment for Thaumatotibia leucotreta (Meyrick) (Lepidoptera: Tortricidae). POSTHARVEST BIOLOGY AND TECHNOLOGY 2017; 125:188-195.
MPHAHLELE RR, FAWOLE OA, MAKUNGA NP, OPARA UL. Functional properties of pomegranate fruit parts: influence of packaging systems and storage time. Journal of Food Measurement and Characterization 2017; 11(4):2233-2246.
MUKAMA M, TSIGE AA, BERRY TM, OPARA UL. Energy usage of forced air precooling of pomegranate fruit inside ventilated cartons. JOURNAL OF FOOD ENGINEERING 2017; 215:126-133.
MUNHUWEYI K, CALEB OJ, LENNOX CL, VAN REENEN AJ, OPARA UL. In vitro and in vivo antifungal activity of chitosan-essential oils against pomegranate fruit pathogens. POSTHARVEST BIOLOGY AND TECHNOLOGY 2017; 129:9-22.
MUNHUWEYI K, LENNOX CL, MEITZ-HOPKINS J, CALEB OJ, SIGGE GO, OPARA UL. Investigating the effects of crab shell chitosan on fungal mycelial growth and postharvest quality attributes of pomegranate whole fruit and arils. SCIENTIA HORTICULTURAE 2017; 220:78-89.
MUPAMBI G, SCHMEISSER M, LOTZE E, MALAN C, DZIKITI S, STEYN WJ. Effect of supplementary irrigation at high ambient temperatures on sunburn, plant physiology, soil and canopy environment of 'Granny Smith' apple. Acta Horticulturae 2017; 1150:239-244.
NCAMA K, OPARA UL, TESFAY SZ, FAWOLE OA, MAGWAZA LS. Application of Vis/NIR spectroscopy for predicting sweetness and flavour parameters of ‘Valencia’ orange (Citrus sinensis) and ‘Star Ruby’ grapefruit (Citrus x paradisi Macfad). JOURNAL OF FOOD ENGINEERING2017; 193:86-94.
OLAREWAJU OO, MAGWAZA LS, FAWOLE OA, TESFAY SZ, OPARA UL. Role of canopy positions on rind biochemical concentrations and radical-scavenging activities in relation to rind breakdown of 'Nules Clementine' mandarins stored at non-chilling temperature. SCIENTIA HORTICULTURAE 2017; 226:231-240.
OPARA UL, HUSSEIN ZH, CALEB OJ. Phytochemical Properties and Antioxidant Activities of Minimally Processed “Acco” Pomegranate Arils as Affected by Perforation‐Mediated Modified Atmosphere Packaging. JOURNAL OF FOOD PROCESSING AND PRESERVATION 2017;41(3):1-9.
SERRA I, STREVER AE, MYBURGH PA, SCHMEISSER M, DELOIRE AJ. Grapevine ( Vitis vinifera L.'Pinotage') leaf stomatal size and density as modulated by different rootstocks and scion water status. Acta Horticulturae 2017; 1157(1):117-181.
STANDER OPJ, BARRY GH, CRONJE PJR. Fruit-load-induced starch accumulation causes leaf chlorosis in "off" 'Nadorcott' mandarin trees. SCIENTIA HORTICULTURAE 2017; 222:62-66.
STANDER OPJ, GILBERT MJ, MOORE S, KIRKMAN W, SCHUTTE GC. Benefits of reducing the size of the navel-end opening in ‘Navel’ sweet oranges (Citrus sinensis) CROP PROTECTION 2017; 96:123-129.
THERON KI, DE VILLIERS MHJ, STEYN WJ. The effect of mechanical bloom thinning with the Darwin 300TM, on the time required for hand thinning, yield, fruit size and fruit quality in 'Zephyr' nectarine. Acta Horticulturae 2016; 1130(1):631-637.
THERON KI, STEENKAMP H, LOTZE GFA, STEYN WJ. The efficacy of chemical and mechanical thinning strategies for 'African RoseTM' Japanese plum (Prunus salacina Lindl.). Acta Horticulturae 2016; 1138(1):61-67.
THERON KI, STEENKAMP H, STEYN WJ. Efficacy of ACC (1-aminocyclopropane-1-carboxylic acid) as a chemical thinner alone or combined with mechanical thinning for Japanese plums (Prunus salacina). HORTSCIENCE 2017; 52(1):110-115.
TSIGE AA, DEKEYSER D, VANWALLEGHEM T, VAN HEMELRIJCK W, NUYTTENS D, DELELE MA, RAMON H, NICOLAI BM, BYLEMANS D, OPARA UL, VERBOVEN P. Experimental and numerical analysis of the spray application on apple fruit in a bin for postharvest treatments.JOURNAL OF FOOD ENGINEERING 2017; 202:34-45.
TSIGE AA, MUKAMA M, OPARA UL. Analysis of the effects of package design on the rate and uniformity of cooling of stacked pomegranates: Numerical and experimental studies. COMPUTERS AND ELECTRONICS IN AGRICULTURE 2017; 136:13-24.
VAN DAEL M, HERREMANS E, VERBOVEN P, OPARA UL, NICOLAI BM, LEBOTSA PS. Automated online detection of granulation in oranges using X-ray radiographs. Acta Horticulturae 2016; 1119(1):179-182.
VAN DER MERWE GJ, THERON KI, KOTZE WP, STEYN WJ. Evaluating the use of harvesting systems and worker platforms in the South African deciduous fruit industry. Acta Horticulturae 2016; 1130(1):597-603.
Journal Articles (NON-subsidised)
CHUKWUMALUME RC, HOFFMAN LC, OPARA UL, O NEILL B, STANDER MA. Polycyclic aromatic hydrocarbons (PAHs) and organochlorinated pesticides (OCPs) in Yellowtail (Seriola lalandi) from three Spatially Distinct Locations along the Coast of South Africa: Levels, Sources and Fish Size Effect. Journal of Food Processing & Technology 2017; 8(1):1000644, 8 pages.
CRONJE PJR, HOFFMAN EW, JOUBERT J, MARAIS H, ZACARIAS L. Influence of late nitrogen soil applications on mandarin fruit quality. Citrus Research & Technology 2016; 37:56-65.
FADIJI TS, BERRY TM, COETZEE CJ, OPARA UL. Investigating the Mechanical Properties of Paperboard Packaging Material for Handling Fresh Produce Under Different Environmental Conditions: Experimental Analysis and Finite Element Modelling. Journal of Applied Packaging Research 2017; 9:20-34.
HUSSEIN ZH, FAWOLE OA, OPARA UL. Investigating bruise susceptibility of pomegranate cultivars during postharvest handling. African Journal of Rural Development 2017; 2(1):33-39.
LOTZE E, DAIBER SH, MIDGLEY SJE. Boron in combination with calcium reduces sunburn in apple fruit. Journal of Boron 2017; 2(3):123-127.
PATHARE P, BERRY TM, OPARA UL. Experimental investigation of compression strength of ventilated corrugated citrus packaging. Packaging Research 2017; 2:22-27.
THERON KI, STEENKAMP H, LOTZE GFA, REYNOLDS S, STEYN WJ. A new chemical thinner for plums on the horizon. SA Fruit Journal 2017; 16(4):94-96.
Proceedings National
ISINGIZWE NTURAMBIRWE JF, PEROLD WJ, OPARA UL. Near infrared spectrometric technique for testing fruit quality: Optimisation of regression models using genetic algorithms. In: Du Plessis M (ed.) Proceedings of SPIE, Fourth Conference on Sensors, MEMS and Electro-Optic Systems (SMEOS 2016), Skukuza, South Africa, SPIE 2017: 10036 ON, 7 pages.
Doctoral completed
BERRY TM, COETZEE CJ, OPARA UL, DEFRAEYE T. Optimisation of multi-scale ventilated package design for next-generation cold chain strategies of horticulture produce . DIng, 2017. 180 pp.
GETAHUN S, MEYER CJ, OPARA UL. Investigating Cooling Investigating Cooling Performance and Energy Utilization of Refrigerated Shipping Container Packed with Fresh Fruit using Computational Fluid Dynamics Modelling . PhD (Eng), 2017. 193 pp.
MUPAMBI G. Water relations and sunburn in pome fruit. PhD (Agric), 2017. 256 pp.
Masters completed
DAIBER SH. Quantifying changes in tree physiology after amelioration to reduce sunburn on apples. MScAgric, 2017. 137 pp.
MARAIS H. Aspects of mineral nutrition affecting fruit quality of ‘Nadorcott’ mandari. MScAgric, 2017. 160 pp.​


Journal Articles (subsidised)
ADETORO AO, FAWOLE OA, OPARA UL. Effects of pre-treatment and drying on the quality attributes of fruit. Acta Horticulturae 2018; 1201:1-6.
AMPEM G, FAWOLE OA, OPARA UL. Quality indices and bioactive contents of pomegranate oil. Acta Horticulturae 2018; 1201:19-28.
ARENDSE E, FAWOLE OA, MAGWAZA LS, NIEUWOUDT H, OPARA UL. Comparing the analytical performance of near and mid infrared spectrometers for evaluating pomegranate juice quality. LWT-Food Science and Technology 2018; 91:180-190.
ARENDSE E, FAWOLE OA, MAGWAZA LS, NIEUWOUDT H, OPARA UL. Evaluation of biochemical markers associated with the development of husk scald and the use of diffuse reflectance NIR spectroscopy to predict husk scald in pomegranate fruit. Scientia Horticulturae 2018;232:240-249.
ARENDSE E, FAWOLE OA, MAGWAZA LS, NIEUWOUDT H, OPARA UL. Fourier transform near infrared diffuse reflectance spectroscopy and two spectral acquisition modes for evaluation of external and internal quality of intact pomegranate fruit. Postharvest Biology and Technology 2018; 138:91-98.
ARENDSE E, FAWOLE OA, MAGWAZA LS, OPARA UL. Non-destructive estimation of pomegranate juice content of intact fruit using X-ray computed tomography. Acta Horticulturae 2018; 1201:297-301.
ARENDSE E, FAWOLE OA, MAGWAZA LS, OPARA UL. Non-destructive prediction of internal and external quality attributes of fruit with thick rind: A review. Journal of Food Engineering 2018; 217:11-23.
ARENDSE E, FAWOLE OA, MAGWAZA LS, OPARA UL. Novel non-destructive techniques to characterise fruit internal components and detect the presence of defects. Acta Horticulturae 2018; 1201:303-308.
BELAY ZA, CALEB OJ, MAHAJAN PV, OPARA UL. Design of Active Modified Atmosphere and Humidity Packaging (MAHP) for 'Wonderful' pomegranate arils. Food and Bioprocess Technology 2018; 11:1478-1494.
BELAY ZA, CALEB OJ, MAHAJAN PV, OPARA UL. Pomegranate arils ('Wonderful') tolerance to low O2 stress during active modified atmosphere storage: based on real time respiration rate. Acta Horticulturae 2018; 1201:213-220.
BELAY ZA, CALEB OJ, MAHAJAN PV, OPARA UL. Response of pomegranate arils (cv. Wonderful) to low oxygen stress under active modified atmosphere condition. Journal of the Science of Food and Agriculture 2019; 99:1088-1097.
BERRY TM, DEFRAEYE T, TSIGE AA, COETZEE CJ, OPARA UL. Horticultural packaging systems of the future: improving reefer container usage. Acta Horticulturae 2018; 1201:221-228.
BERRY TM, FADIJI TS, DEFRAEYE T, COETZEE CJ, OPARA UL. A multi-parameter approach to vent hole design for cartons packed with internal packaging. Acta Horticulturae 2018; 1194:1307-1314.
BLANCKENBERG A, FAWOLE OA, OPARA UL. Quantifying postharvest losses of 'Crimson Seedless' table grapes along the supply chain. Acta Horticulturae 2018; 1201:29-34.
CARSTENS E, LANGENHOVEN SD, PIERRON RJG, LAUBSCHER W, SERFONTEIN JJ, BEZUIDENHOUT CM, VENTER E, FOURIE PH, HATTINGH V, MOSTERT L. Elsinoe punicae causing scab of pomegranates in South Africa does not cause disease on citrus. AUSTRALASIAN PLANT PATHOLOGY 2018; 47:405-411.
CHIGWAYA K, SCHOEMAN L, FOURIE WJ, CROUCH IJ, VILJOEN D, CROUCH EM. 'Fuji' apple internal browning explored via X-ray computed tomography (CT). Acta Horticulturae 2018; 1201:309-316.
CHIKWANHA OC, RAFFRENATO E, OPARA UL, FAWOLE OA, SETATI ME, MUCHENJE V, MAPIYE C. Impact of dehydration on retention of bioactive profile and biological activities of different grape (Vitis vinifera L.) pomace varieties. ANIMAL FEED SCIENCE AND TECHNOLOGY2018; 244:116-127.
COETZEE JH, HOFFMAN EW. Social and environmental responsibility of the floriculture industry in South Africa. Acta Horticulturae 2018; 1201:479-484.
CRONJE R, SCHOEMAN L, FOURIE WJ, THERON KI, STEYN WJ, CROUCH EM. Postharvest 'Forelle' (Pyrus communis) mealiness influenced by canopy position, harvest maturity and storage duration. Acta Horticulturae 2018; 1201:35-40.
DANIELS AJ, OPARA UL, POBLETE CA, NIEUWOUDT H. Novel approach for measuring sugar and acidity non-destructively in whole table grape bunches. Acta Horticulturae 2018; 1201:317-324.
DODD MC, BISHOP CFH, LIPPERT F. Commercial benefits achieved by the removal of ethylene in a long plum supply chain with new filtration technology. Acta Horticulturae 2018; 1194:729-736.
DOE JW, SCHOEMAN L, CROUCH EM. Effect of harvest maturity, storage condition and duration, on internal flesh browning and quality of 'Rosy Glow' apples grown in South Africa. Acta Horticulturae 2018; 1201:41-48.
DZIKITI S, VOLSCHENK T, MIDGLEY SJE, LOTZE E, TAYLOR N, GUSH M, NTSHIDI Z, ZIREBWA FS, DOKO Q, SCHMEISSER M, JARMAIN C, STEYN WJ, PIENAAR HH. Estimating the water requirements of high yielding and young apple orchards in the winter rainfall areas of South Africa using a dual source evapotranspiration model. AGRICULTURAL WATER MANAGEMENT 2018; 208:152-162.
FADIJI TS, BERRY TM, COETZEE CJ, OPARA UL. Mechanical design and performance testing of corrugated paperboard packaging for the postharvest handling of horticulture produce. Biosystems Engineering 2018; 171:220-224.
FADIJI TS, BERRY TM, TSIGE AA, COETZEE CJ, OPARA UL. Finite element analysis (FEA) - an effective and efficient design tool in food packaging industries: 
a review. Acta Horticulturae 2018; 1201:245-252.
FADIJI TS, BERRY TM, TSIGE AA, COETZEE CJ, OPARA UL. Finite element modelling of the structural performance of ventilated paperboard packaging. Acta Horticulturae 2018; 1201:237-244.
FADIJI TS, COETZEE CJ, BERRY TM, TSIGE AA, OPARA UL. The efficacy of finite element analysis (FEA) as a design tool for food packaging. Biosystems Engineering 2018; 174:20-40.
FADIJI TS, TSIGE AA, COETZEE CJ, BERRY TM, OPARA UL. Application of finite element analysis to predict the mechanical strength of ventilated corrugated paperboard packaging for handling fresh produce. Biosystems Engineering 2018; 174:260-281.
FAWOLE OA, OPARA UL. Value-addition of sunburned pomegranate fruit to reduce postharvest losses: a cosmeceutical perspective. Acta Horticulturae 2018; 1225:221-226.
FOURIE WJ, SCHOEMAN L, CRONJE R, THERON KI, STEYN WJ, CROUCH EM. Influence of canopy position on the microstructural parameters of 'Forelle' pears and its link to mealiness. Acta Horticulturae 2018; 1201:325-330.
GETAHUN S, TSIGE AA, DELELE MA, MEYER CJ, OPARA UL. Experimental and numerical investigation of airflow inside refrigerated shipping containers. Food and Bioprocess Technology 2018; 11:1164-1176.
HUSSEIN ZH, FAWOLE OA, OPARA UL. Bruise damage susceptibility of pomegranates Punica granatum and its impact on fruit physiological. Acta Horticulturae 2018; 1201:55-64.
HUSSEIN ZH, FAWOLE OA, OPARA UL. Preharvest factors influencing bruise damage of fresh fruits. Scientia Horticulturae 2018; 229:45-58.
HUYSAMER AJ, HOFFMAN EW, JOHNSON SA. Novel technologies for the postharvest treatment of Cape Flora to control phytosanitary insect pests. Acta Horticulturae 2018; 1201:427-433.
ISINGIZWE NTURAMBIRWE JF, NIEUWOUDT H, OPARA UL, PEROLD WJ. Performance of genetic algorithm in optimization of NIRS PLS models to predict apple fruit quality. Acta Horticulturae 2018; 1201:355-362.
KAWHENA TG, OPARA UL, BOTES WJ, FAWOLE OA. Effect of repeated low oxygen stress (RLOS) on physiological disorders, physico-chemical properties and sensory parameters of 'Packham's Triumph' pears. Acta Horticulturae 2018; 1201:65-74.
KRITZINGER I, LOTZE E, JOOSTE MM. The use of computed tomography scans to evaluate broken stones in a susceptible Japanese plum (Prunus salicina Lindl.) cultivar. Acta Horticulturae 2018; 1194:737-744.
KRITZINGER I, THERON KI, LOTZE E. Evaluation of micro-perforated LDPE bags for reduction of postharvest moisture loss and shrivelling in Japanese plums. Acta Horticulturae 2018; 1201:253-258.
KRITZINGER I, THERON KI, LOTZE GFA, LOTZE E. Peel water vapour permeance of Japanese plums as indicator of susceptibility to postharvest shriveling. Scientia Horticulturae 2018; 242:188-194.
LOTZE E, DAIBER SH, MIDGLEY SJE. Evaluating the efficacy of a preharvest combination of calcium and boron as foliar application to reduce sunburn on 'Cripps Pink' apples. Acta Horticulturae 2018; 1217:61-68.
LOTZE E, STEYN WJ. Quantifying differences in growth of selected apple rootstocks under extreme simulated spring temperatures in environmental chambers. Acta Horticulturae 2017; 1177:103-106.
LOUW E, HOFFMAN EW, THERON KI, MIDGLEY SJE. Impact of temperature on autumn- and spring-initiated inflorescence systems within a biennial pruning system of Protea ‘Pink Ice’ cut flowers. Hortscience 2018; 53:295-303.
LOUW E, JACOBS G, HOFFMAN EW. Application of plant growth regulators to single Leucospermum stems to extend stem length. Acta Horticulturae 2018; 1201:405-412.
LOUW E, SMIT D, COETZEE JH, HOFFMAN EW. Extending shelf life of indoor potted plants by evaluating novel water reservoirs. Acta Horticulturae 2018; 1201:627-634.
LUFU R, BERRY TM, TSIGE AA, OPARA UL. The influence of liner packaging on weight loss and decay of pomegranate fruit. Acta Horticulturae 2018; 1201:259-264.
MADUFOR NJ, PEROLD WJ, OPARA UL. Detection of plant diseases using biosensors: a review. Acta Horticulturae 2018; 1201:83-90.
MAKEREDZA B, JOOSTE MM, LOTZE E, SCHMEISSER M, STEYN WJ. Canopy factors influencing sunburn and fruit quality of Japanese plum (Prunus salicina Lindl.). Acta Horticulturae 2018; 1228:121-128.
MANRAKHAN A, DANEEL JH, BECK R, THERON CD, WELDON CW, MOORE S, HATTINGH V. Non-host status of commercial export grade lemon fruit (Citrus limon (L.) Burman f. cv. Eureka) for Ceratitis capitata, Ceratitis rosa, Ceratitis quilicii and Bactrocera dorsalis (Diptera: Tephritidae) in South Africa. African Entomology 2018; 26:202-214.
MATSIKIDZE SN, BOTES WJ, HUYSAMER M, HOFFMAN EW. Feasibility of automatic ventilation technology for sea freight of Protea cut flower products. Acta Horticulturae 2018; 1201:455-462.
MCCONCHIE R, BOKSHI A, DILLON A, OFFORD C, HOFFMAN EW. Promotion of flowering in waratahs (Telopea speciosissima). Acta Horticulturae 2018; 1201:399-403.
MDITSHWA A, FAWOLE OA, OPARA UL. Recent developments on dynamic controlled atmosphere storage of apples-A review. Food Packaging and Shelf Life 2018; 16:59-68.
MOKAPANE FM, FAWOLE OA, OPARA UL. Strategies to preserve quality and extend shelf life of dried fruits and vegetables: a review. Acta Horticulturae 2018; 1201:99-106.
MPHAHLELE RR, FAWOLE OA, OPARA UL. Sensory, quality and biochemical attribtutes of pomegranate juice as affected by method of extraction. Acta Horticulturae 2018; 1201:115-122.
MPHAHLELE RR, VAN RENSBURG MN, MOKAPANE FM, FAWOLE OA, OPARA UL. Evolution of quality attributes in pomegranate peel and arils during fruit maturation. Acta Horticulturae 2018; 1201:123-129.
MUKAMA M, TSIGE AA, BERRY TM, OPARA UL. Effect of relative humidity on pomegranate quality under simulated ambient storage conditions. Acta Horticulturae 2018; 1201:265-272.
MUKAMA M, TSIGE AA, OPARA UL. Analysis of the thermal and bio-physical properties of pomegranate fruit. Acta Horticulturae 2018; 1201:273-279.
MULLER A, THERON KI. The use of 6-benzyladenine to increase same-season branching on one-year-old lateral extension growth of third-leaf apple trees. Acta Horticulturae 2018; 1206:63-68.
MULLER A, THERON KI. The use of plant growth regulators to increase apical extension growth of first-leaf apple trees. Acta Horticulturae 2018; 1228:359-362.
MUNHUWEYI K, CALEB OJ, VAN REENEN AJ, OPARA UL. Physical and antifungal properties of beta-cyclodextrin microcapsules and nanofibre films containing cinnamon and oregano essential oils. LWT-Food Science and Technology 2018; 87:413-422.
MUPAMBI G, SCHMEISSER M, DZIKITI S, REYNOLDS S, STEYN WJ. Ineffectiveness of foliar S-ABA application as an apple sunburn suppressant explained through effects on peel biochemistry and leaf ecophysiology. Scientia Horticulturae 2018; 232:256-263.
MUZIRI T, THERON KI, NIEUWOUDT H, SCHOEMAN L, CROUCH EM. Mealiness in 'Forelle' pears: relationship between TSS and prediction based on FT-NIR spectroscopy. Acta Horticulturae 2018; 1201:339-345.
NCAMA K, MAGWAZA LS, FAWOLE OA, TESFAY SZ, OPARA UL. Investigating pre-symptomatic biochemical markers related to 'Marsh' grapefruit (Citrus paradisi Macfad) susceptibility to chilling injury and rind pitting disorders. Acta Horticulturae 2018; 1201:131-138.
NCAMA K, MAGWAZA LS, FAWOLE OA, TESFAY SZ, OPARA UL. Partial least square models for non-destructive prediction of 'Marsh' grapefruit (Citrus x paradisi MacFad) susceptibility to postharvest rind pitting using Vis/NIR spectroscopy. Acta Horticulturae 2018; 1201:347-353.
NCAMA K, TESFAY SZ, FAWOLE OA, OPARA UL, MAGWAZA LS. Non-destructive prediction of 'Marsh' grapefruit susceptibility to postharvest rind pitting disorder using reflectance Vis/NIR spectroscopy. Scientia Horticulturae 2018; 231:265-271.
NCAMA K, TESFAY SZ, OPARA UL, FAWOLE OA, MAGWAZA LS. Non-destructive prediction of 'Valencia' orange (Citrus sinensis) and 'Star Ruby' grapefruit (Citrus paradisi Macfad) internal quality parameters using Vis/NIRS. Acta Horticulturae 2018; 1194:1119-1126.
OLAREWAJU OO, MAGWAZA LS, FAWOLE OA, TESFAY SZ, CRONJE PJR, OPARA UL. Postharvest rind colour and antioxidant composition of 'Marsh' grapefruit harvested from different canopy positions of the tree. Acta Horticulturae 2018; 1225:227-232.
OLAREWAJU OO, MAGWAZA LS, FAWOLE OA, TESFAY SZ, OPARA UL. Comparative effects of canopy position on physicochemical properties of 'Marsh' grapefruit during non-chilling postharvest cold storage. Scientia Horticulturae 2018; 241:1-7.
OLAREWAJU OO, MAGWAZA LS, FAWOLE OA, TESFAY SZ, OPARA UL. Investigating the effect of canopy position on rind phytochemical concentrations and radical scavenging activites of 'Nules Clemetine' mandarins during postharvest cold storage. Acta Horticulturae 2018;1201:145-152.
OLAREWAJU OO, MAGWAZA LS, NIEUWOUDT H, FAWOLE OA, TESFAY SZ, OPARA UL. Calibration modelling for non-destructive estimation of external and internal quality parameters of 'Marsh' grapefruit using Vis/NIR spectroscopy. Acta Horticulturae 2018; 1225:233-238.
OPARA UL, FADIJI TS. Compression damage susceptibility of apple fruit packed inside ventilated corrugated paperboard package. Scientia Horticulturae 2018; 227:154-161.
REINTEN E, HOFFMAN EW, BEZUIDENHOUT K, GERBER A. Sustainable globalization within international markets for the Proteaceae ornamental industry. Acta Horticulturae 2018; 1201:485-492.
SCHEFFLER OC, COETZEE CJ, OPARA UL. A discrete element model (DEM) for predicting apple damage during handling. Biosystems Engineering 2018; 172:29-48.
SCHOEMAN L, CRONJE R, FOURIE WJ, THERON KI, STEYN WJ, HUMAN JP, CROUCH EM. Influence of pollination on seed content and mealiness development in 'Forelle' pear as detected with X-ray micro- and nano-computed tomography (CT). Acta Horticulturae 2018;1201:371-378.
SIBOZA X, KOTZE WP, COOK NC, STEYN WJ. Evaluating more yield efficient dwarfing, semi-dwarfing and semi-vigorous rootstocks for the South African apple industry. Acta Horticulturae 2018; 1228:161-166.
SMIT R, JOOSTE MM, JOHNSON SA. CATTS technology: phytosanitary control and market expansion of chill sensitive Japanese plums for South Africa. Acta Horticulturae 2018; 1194:201-208.
SMITH A, STEYN WJ, HOFFMAN EW. The effect of high temperature and water stress on the development of bract browning in Protea 'Pink Ice'. Acta Horticulturae 2018; 1201:419-426.
STANDER OPJ, BARRY GH, CRONJE PJR. Fruit load limits root growth, summer vegetative shoot development, and flowering in alternate- bearing 'Nadorcott' Mandarin trees. JOURNAL OF THE AMERICAN SOCIETY FOR HORTICULTURAL SCIENCE 2018; 143(3):213-225.
STANDER OPJ, BARRY GH, CRONJE PJR. The significance of macronutrients in alternate bearing 'Nadorcott' mandarin trees. Hortscience 2018; 53:1600-1609.
STANDER OPJ, BOTES J, KROGSCHEEPERS C. The potential use of Metamitron as a chemical fruit-thinning agent in Mandarin. HORTTECHNOLOGY 2018; 28:28-34.
THERON KI, LOTZE GFA, REYNOLDS S. Chemical thinning of 'Forelle' pear with S-abscisic acid and 1-aminocyclopropane-1-carboxylic acid. Acta Horticulturae 2018; 1206:13-20.
TRUTER W, VARDIEN W, HOFFMAN EW. Investigating the potential of sodium nitroprusside, a nitric oxide donor, to extend the vase life of Protea cut flower products. Acta Horticulturae 2018; 1201:439-445.
TSIGE AA, ARENDSE E, DU PLESSIS A, OPARA UL. Analysis of the 3D microstructure of pomegranate peel tissue using X-ray micro-CT. Acta Horticulturae 2018; 1201:197-204.
TSIGE AA, MUKAMA M, OPARA UL. Computational fluid dynamics (CFD) based analysis of the aerodynamic and thermodynamic performances of package designs during cooling of stacked pomegranates. Acta Horticulturae 2018; 1201:205-212.
VAN NIEKERK JM, KOTZE C, NORTH JJ, CRONJE PJR. Effect of phosphonate applications, for Phytophthora brown rot control, on 'Nadorcott' mandarin external fruit quality. HORTTECHNOLOGY 2018; 28(4):470-475.
VARDIEN W, JACOBS G, HOFFMAN EW. The efficacy of γ-aminobutyric acid (GABA) as a postharvest treatment in Protea, to enhance vase life and maintain quality. Acta Horticulturae 2018; 1201:413-418.
VARDIEN W, JACOBS G, HOFFMAN EW. The efficacy of alternate sugars, trehalose and lactulose, as a postharvest treatment in Protea 'Sylvia', to alleviate leaf blackening. Acta Horticulturae 2018; 1201:463-469.
WU W, CRONJE PJR, NICOLAI BM, VERBOVEN P, OPARA UL, DEFRAEYE T. Virtual cold chain method to model the postharvest temperature history and quality evolution of fresh fruit - A case study for citrus fruit packed in a single carton. Computers and Electronics in Agriculture 2018; 144:199-208.
WU W, HALLER P, CRONJE PJR, DEFRAEYE T. Full-scale experiments in forced-air precoolers for citrus fruit: Impact of packaging design and fruit size on cooling rate and heterogeneity. Biosystems Engineering 2018; 169:115-125.
YANCLO LJA, FAWOLE OA, OPARA UL. Effects of heat treatments on sensory attributes and decay incidence of pomegranate ('Wonderful') fruit. Acta Horticulturae 2018; 1201:183-189.
Chapters in Books
HOFFMAN EW, VARDIEN W, JACOBS G, WINDELL NE. Leaf blackening: A serious impediment to long-term cold storage, transport, and extended vase life in protea cut flowers. In: Warrington I (ed.) Horticultural Reviews, John Wiley and Sons, Hoboken, USA, 2018: 73-104.
PATHARE PB, OPARA UL. Structural Design of Horticultural Packaging. In: Robertson G (ed.) Reference Module in Food Science , Elsevier, Queensland, Australia, 2018: 1-6.
Research Reports
CHIGWAYA K, CROUCH IJ, CROUCH EM. Fuji browning explored via X-Ray CT. 2018: 23 pp.
CROUCH EM, CRONJE R, SCHOEMAN L. Post-harvest 'Forelle' mealiness development, detected at harvest by CT-X ray scanning and semi-commercial colour pre-sorting influenced by canopy position at harvest as well as pollination. 2018: 79 pp.
CROUCH EM, DIPPENAAR L, SCHOEMAN L. Determining pre-harvest mealiness / cavity development stage, due to environmental factors and exploring prevention of mealiness developing after storage and ripening. 2018: 26 pp.
CROUCH EM, DOE JW. Harvest and storage condition plus duration influencing internal browning and fruit quality of 'Rosy Glow'. 2018: 54 pp.
DZIKITI S, VOLSCHENK T, MIDGLEY SJE, GUSH M, TAYLOR N, LOTZE E, ZIREBWA FS, NTSHIDI Z, SCHMEISSER M, DOKO Q. Quantifying water use and water productivity of high performing apple orchards of different canopy sizes. Final Project Report to the Water Research Commission and Hortgro Science. 2018: 67 pp.
Doctoral completed
STANDER OPJ. Dissertation: Critical factors concomitant to the physiological development of alternate bearing in citrus (Citrus sp.). PhD (Agric), 2018. 215 pp. Promotor: CRONJE PJR. Medepromotor: Barry GH.
Masters completed
BARASU PD. Acclimation of apple peel to light and temperature and the effect thereof on red colour development and tolerance to sunburn. MScAgric, 2017. 159 pp. Studieleier: MIDGLEY SJE. Medestudieleier: STEYN WJ, SCHMEISSER M.
BOTES J. Impact of shade netting of fruit quality of 'Nadorcott' mandarin. MScAgric, 2018. 166 pp. Studieleier: CRONJE PJR. Medestudieleier: HOFFMAN EW, ZACARIAS GARCIA L.
BROWN R. Effect of permanent shade netting on 'Nadorcott' mandarin tree phenology and productivity . MScAgric, 2018. 193 pp. Studieleier: CRONJE PJR. Medestudieleier: STANDER OPJ.
JANSE VAN VUUREN L. Quantifying the effect of commercial nitrogen formulations BlackU / BlackDAP as alternative nitrogen source on fruit tree physiology, yield and fruit quality of two apple cultivars. MScAgric, 2018. 82 pp. Studieleier: LOTZE E. Medestudieleier: STANDER OPJ.
JORDAAN GP. Evaluating the potential of the biogas industry in South Africa. MScAgric, 2018. 209 pp. Studieleier: LOTZE E. Medestudieleier: VINK EM.
LE ROUX E. Ca-metalosate as an alternative Ca formulation for decreasing Ca related disorders in fruit trees. MScAgric, 2018. 94 pp. Studieleier: LOTZE E. Medestudieleier: STANDER OPJ.
MATSIKIDZE SN. Feasibility of closed ventilation and automatic ventilation for sea freight of Proteaceae cut flower stems. MScAgric, 2018. 254 pp. Studieleier: HOFFMAN EW. Medestudieleier: HUYSAMER M, Botes A.
PRINS MD. The impact of shade netting on the microclimate of a citrus orchard and the tree's physiology. MScAgric, 2018. 162 pp. Studieleier: CRONJE PJR. Medestudieleier: Barry GH.