Acknowledgments
The research reported on in this article was conducted as part of the solicited WRC Project K5/1579//4, entitled, ‘Nutritional value and water use of indigenous crops for improved rural livelihoods’ (WRC, 2006: 203–204), which was initiated, managed and funded by the Water Research Commission. The authors also acknowledge the Tshwane University of Technology (TUT) for supporting this project financially, and Mr. R. Böhringer for his valuable contributions towards the planning and implementation of this study. Lastly, special thanks to the Vegetable and Ornamental Plant Institute of the Agricultural Research Council at Roodeplaat (VOPI) and Mr. Mabulannga for supplying seeds.