Johannes Hendrikus Barnard, Leon Daniel van Rensburg, Alan Thomas Peter Bennie, and Christiaan Cornelius du Preez. “Water and Salt Balances of Two Shallow Groundwater Cropping Systems Using Subjective and Objective Irrigation Scheduling”. Water SA 43, no. 4 October (October 31, 2017). Accessed November 7, 2024. https://watersa.net/article/view/10595.