Overview
Availability
- Dr Stephen Harper is:
- Available for supervision
Qualifications
- Bachelor of Agricultural Science, The University of Queensland
- Masters (Coursework), The University of Queensland
- Doctor of Philosophy, The University of Queensland
Works
Search Professor Stephen Harper’s works on UQ eSpace
2024
Book Chapter
Genetic and Agronomic Biofortification of Zinc in Maize and Sweetcorn (Zea mays L.)
Cheah, Zhong Xiang, O’Hare, Tim, Harper, Stephen and Bell, Michael (2024). Genetic and Agronomic Biofortification of Zinc in Maize and Sweetcorn (Zea mays L.). Phytoremediation and Biofortification: Strategies for Sustainable Environmental and Health Management. (pp. 201-223) New York, NY United States: Apple Academic Press. doi: 10.1201/9781003402084-10
2024
Conference Publication
Response of shallots to different rates of nitrogen grown in the lowland tropics of Cirebon Regency, West Java
Gunadi, Nikardi, Harper, Stephen and Adiyoga, Witono (2024). Response of shallots to different rates of nitrogen grown in the lowland tropics of Cirebon Regency, West Java. 5th International Conference on Agricultural Engineering for Sustainable Agriculture Production (AESAP 2023), Bogor, Indonesia, 14-15 November 2023. Bristol, United Kingdom: Institute of Physics Publishing. doi: 10.1088/1755-1315/1386/1/012041
2023
Journal Article
Sensitivity of capsicum germplasm to magnesium deficiency growing in the solution culture
Nguyen, P. T., Bell, M. J. and Harper, S. M. (2023). Sensitivity of capsicum germplasm to magnesium deficiency growing in the solution culture. Acta Horticulturae (1375), 137-144. doi: 10.17660/actahortic.2023.1375.18
2023
Journal Article
Phytotoxic effects of Al on root growth are confounded in the presence of fulvic and humic acids
Harper, Stephen and Menzies, Neal (2023). Phytotoxic effects of Al on root growth are confounded in the presence of fulvic and humic acids. Soil Systems, 7 (3) 68, 1-15. doi: 10.3390/soilsystems7030068
2023
Journal Article
Phenological growth stage of tropical shallot (Allium cepa L. Aggregatum group) planted from seed in lowland area based on the BBCH scale
Pangestuti, Retno, Sulistyaningsih, Endang, Kurniasih, Budiastuti, Murti, Rudi Hari, Harper, Stephen and Subandiyah, Siti (2023). Phenological growth stage of tropical shallot (Allium cepa L. Aggregatum group) planted from seed in lowland area based on the BBCH scale. Annals of Applied Biology, 182 (2), 257-266. doi: 10.1111/aab.12799
2023
Journal Article
Incidence of twisted disease and cultivation practice of shallot farmers in Bantul coastal area, Yogyakarta, Indonesia
Wibowo, Arif, Santika, Islaminati Anna, Syafitri, Luthfiana Mifta, Widiastuti, Ani, Subandiyah, Siti and Harper, Stephen (2023). Incidence of twisted disease and cultivation practice of shallot farmers in Bantul coastal area, Yogyakarta, Indonesia. Journal of Tropical Plant Pests and Diseases, 23 (1), 23-30. doi: 10.23960/jhptt.12323-30
2023
Conference Publication
Effect of nitrogen rates on root yield of the medicinal plant Achyranthes bidentata
Nguyen, B., Chu, M., Dang, H., Pham, P., Nguyen, D., Phan, H. and Harper, S. (2023). Effect of nitrogen rates on root yield of the medicinal plant Achyranthes bidentata. International Symposium on Medicinal and Aromatic Plants: Domestication, Breeding, Cultivation and New Perspectives, Angers, France, 14-20 August 2022. Leuven, Belgium: International Society for Horticultural Science. doi: 10.17660/ActaHortic.2023.1358.18
2023
Journal Article
Short Communication: Molecular identification of Colletotrichum gloeosporioides causing anthracnose on shallot in Bantul, Yogyakarta, Indonesia
Syafitri, Luthfiana M., Wibowo, Arif, Widiastuti, Ani, Subandiyah, Siti and Harper, Stephen (2023). Short Communication: Molecular identification of Colletotrichum gloeosporioides causing anthracnose on shallot in Bantul, Yogyakarta, Indonesia. Biodiversitas, 24 (8), 4530-4534. doi: 10.13057/biodiv/d240855
2022
Conference Publication
Benchmarking mineral concentration, bulb yield and quality across garlic genotypes
Nguyen, Binh , Wehr, Bernhard , O'Hare, Timothy , Menzies, Neal , Hong, Hung and Harper, Stephen (2022). Benchmarking mineral concentration, bulb yield and quality across garlic genotypes. TropAg International Agriculture Conference, Brisbane, Australia, 31 October - 2 November 2022.
2022
Journal Article
Sulfur nutrition affects garlic bulb yield and allicin concentration
Nguyen, Binh Thi, Harper, Stephen M., O'Hare, Tim J., Menzies, Neal W. and Wehr, Bernhard (2022). Sulfur nutrition affects garlic bulb yield and allicin concentration. Plants, 11 (19) 2571, 2571. doi: 10.3390/plants11192571
2022
Conference Publication
Designing high zeaxanthin capsicums
Agarwal, R., Hayward, A., Hong, H., Harper, S. and O'Hare, T. (2022). Designing high zeaxanthin capsicums. Brain and Ocular Nutrition Conference 2022, Cambridge, United Kingdom, 27-29 July 2022. Amsterdam, Netherlands: IOS Press. doi: 10.3233/JAD-229008
2022
Journal Article
Detection of two poleroviruses infecting garlic (Allium sativum) in Australia
Nurulita, Sari, Geering, Andrew D. W., Crew, Kathleen S., Harper, Stephen M. and Thomas, John E. (2022). Detection of two poleroviruses infecting garlic (Allium sativum) in Australia. Australasian Plant Pathology, 51 (4), 461-465. doi: 10.1007/s13313-022-00870-z
2022
Journal Article
Improved agronomic biofortification of sweetcorn achieved using foliar rather than soil Zn applications
Cheah, Zhong Xiang, Harper, Stephen M., Hare, Tim J. O’, Kopittke, Peter M. and Bell, Michael J. (2022). Improved agronomic biofortification of sweetcorn achieved using foliar rather than soil Zn applications. Cereal Chemistry, 99 (4), 819-829. doi: 10.1002/cche.10539
2021
Journal Article
A rapid and simplified methodology for the extraction and quantification of allicin in garlic
Nguyen, B.T., Hong, H.T., O’Hare, T.J., Wehr, J.B., Menzies, N.W. and Harper, S.M. (2021). A rapid and simplified methodology for the extraction and quantification of allicin in garlic. Journal of Food Composition and Analysis, 104 104114, 1-7. doi: 10.1016/j.jfca.2021.104114
2021
Conference Publication
Excess nitrogen application reduces root yield of Achyranthes bidentata
Nguyen, Binh, Dang, Ha, Pham, Phuong, Chu, My, Nguyen, Duyen, Phan, Hien, Wehr, Bernhard and Harper, Stephen (2021). Excess nitrogen application reduces root yield of Achyranthes bidentata. The Soil Science Australia and the New Zealand Society of Soil Science Joint Conference, Cairns, QLD Australia, 27 June - 2 July 2021.
2021
Conference Publication
Growth, yield and postharvest quality of tomato (Solanum lycopersicum Mill.) as influenced by different rates of nitrogen fertilizer
Gonzaga, N.R., Gonzaga, A.B., Pepito, S.L.A., Octavio, R.I. and Harper, S.M. (2021). Growth, yield and postharvest quality of tomato (Solanum lycopersicum Mill.) as influenced by different rates of nitrogen fertilizer. III Asian Horticultural Congress - AHC2020, Bangkok, Thailand, 15-17 December 2020. Leuven, Belgium: International Society for Horticultural Science. doi: 10.17660/actahortic.2021.1312.48
2021
Conference Publication
Growth, yield, and postharvest quality of cabbage (Brassica oleracea L.) in response to different levels of nitrogen fertilizer
Gonzaga, A.B., Gonzaga, N.R., Pepito, S.L.A., Octavio, R.I. and Harper, S.M. (2021). Growth, yield, and postharvest quality of cabbage (Brassica oleracea L.) in response to different levels of nitrogen fertilizer. III Asian Horticultural Congress - AHC2020, Bangkok, Thailand, 15-17 December 2020. Leuven, Belgium: International Society for Horticultural Science. doi: 10.17660/actahortic.2021.1312.57
2021
Journal Article
Detection and distribution of viruses infecting garlic crops in Australia
Cremer, Julia, Campbell, Paul, Steele, Visnja, Persley, Denis, Thomas, John, Harper, Stephen and Gambley, Cherie (2021). Detection and distribution of viruses infecting garlic crops in Australia. Plants, 10 (5) 1013, 1-14. doi: 10.3390/plants10051013
2020
Conference Publication
Carotenoid profiling of orange-coloured capsicums: In search of high-zeaxanthin varieties for eye health
Agarwal, Rimjhim, Hong, Hung T., Hayward, Alice, Harper, Stephen, Mitter, Neena and O’Hare, Tim J. (2020). Carotenoid profiling of orange-coloured capsicums: In search of high-zeaxanthin varieties for eye health. 1st International Electronic Conference on Food Science and Functional Foods, Online, 10–25 November, 2020. Basel, Switzerland: MDPI. doi: 10.3390/foods_2020-07717
2020
Journal Article
First report of garlic virus E in Australia
Nurulita, Sari, Geering, Andrew D. W., Crew, Kathleen S., Harper, Stephen and Thomas, John E. (2020). First report of garlic virus E in Australia. Australasian Plant Disease Notes, 15 (1) 32. doi: 10.1007/s13314-020-00400-0
Supervision
Availability
- Dr Stephen Harper is:
- Available for supervision
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Supervision history
Current supervision
-
Doctor Philosophy
Genotypic responses of capsicum to copper toxicity
Principal Advisor
Other advisors: Professor Peter Kopittke
-
Doctor Philosophy
Factors controlling nutrient use efficiency across a range of capsicum germplasm
Principal Advisor
Other advisors: Professor Peter Kopittke
-
Doctor Philosophy
Impact of metal ions on acidic vegetable production soils.
Principal Advisor
Other advisors: Professor Peter Kopittke
Completed supervision
-
2023
Doctor Philosophy
Virus-infected garlic in Australia and factors affecting disease epidemiology
Associate Advisor
Other advisors: Associate Professor Andrew Geering
-
2023
Doctor Philosophy
Understanding the mechanism responsible for zeaxanthin accumulation in orange-coloured Capsicum.
Associate Advisor
Other advisors: Dr Alice Hayward, Professor Neena Mitter
-
2023
Doctor Philosophy
Evaluation of environmental, genotypic and nutritional factors influencing yield and quality of garlic
Associate Advisor
Other advisors: Dr Bernhard Wehr
-
2020
Doctor Philosophy
Genetic and agronomic biofortification of zinc in sweetcorn
Associate Advisor
Other advisors: Professor Michael Bell
-
2020
Master Philosophy
The Effects of Low pH and Aluminium Toxicity on Pythium Damping-off in Cucumber
Associate Advisor
Other advisors: Professor Victor Galea
-
2013
Doctor Philosophy
Reduction of nitrogen loss from intensive horticultural systems in the sub-tropics using organic waste amendments
Associate Advisor
Other advisors: Adjunct Professor Ram Dalal AM
-
2013
Master Philosophy
Nitrogen use efficiency of tomato: Role of root system morphological traits
Associate Advisor
Other advisors: Professor Peter Kopittke
Media
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