Faculty of Natural and Agricultural Sciences
School of Agricultural and Food Sciences
Department of Plant Production and Soil Science
Hammes, PS
MSc(Agric) DSc(Agric)(Pret) - Professor
Contact Details
Research Interests
Research Output
Contact Details:
Telephone number: 012 420 3219
Fax number: 012 420 4120
E-mail address: piet.hammes@up.ac.za
Research Interests:
The morphology and ultrastructure of the epidermis of leaves and fruit
Epidemiology of Erwinia on potato in SA
Sustainable plant production
Soil water relations and plant water use
Research Output:
Research articles in refereed specialist journals:
Allemann J, Hammes PS: 2006. Effect of photoperiod on tuberization in the Livingstone potato (Plectranthus esculentus N.E. Br. Lamiaceae). Field Crops Research, 98, pp 76-81.
Bayu W, Rethman NFG, Hammes PS, Alemu G: 2006. Effects of farmyard manure and inorganic fertilizers on sorghum growth, yield, and nitrogen use in a semi-arid area of Ethiopia. Journal of Plant Nutrition, 29 (2), pp 391-407.
Omani E, Hammes PS: 2006. Interactive effects of salinity and water stress on growth, leaf water relations, and gas exchange in amaranth (Amaranthus spp.). New Zealand Journal of Crop and Horticultural Science, 34, pp 33-44.
Omani E, Hammes PS: 2006. Ameliorative effects of calcium on growth and mineral uptake of salt-stressed amaranth. South African Journal of Plant and Soil/Suid-Afrikaanse Tydskrif vir Plant en Grond, 23 (3), pp 197-202.
Tekalign T, Hammes PS: 2006. The effect of MCPA and paclobutrazol on flowering, berry set, biomass production, tuber yield and quality of potato. South African Journal of Plant and Soil/Suid-Afrikaanse Tydskrif vir Plant en Grond, 23 (2), pp 126-131.
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