Your search found 9 records
1 Beukes, D. J.; Bennie, A. T. P.; Hensley, M.. 1999. Optimization of soil water use in the dry crop production areas of South Africa. In van Duivenbooden, N.; Pala, M.; Studer, C.; Bielders, C. L. (Eds.), Efficient soil water use: The key to sustainable crop production in the dry areas of West Asia, and North and Sub-Saharan Africa. Aleppo, Syria; Patancheru, India: ICARDA; ICRISAT. pp.165-191.
Soil water ; Water use efficiency ; Optimization ; Crop production ; Rain-fed farming ; Social aspects ; Economic aspects ; Irrigation requirements ; Percolation ; Runoff ; Infiltration ; Evaporation ; Evapotranspiration ; Tillage ; Weed control ; Simulation models / South Africa
(Location: IWMI-HQ Call no: 631.7.2 G000 VAN Record No: H025461)
2 Beukes, D. J.; Marasas, C. N.; Bennie, A. T. P.; Hensley, M.. 1999. Impact of optimizing soil water use research, and the need for using new information tools and methodologies in South Africa. In van Duivenbooden, N.; Pala, M.; Studer, C.; Bielders, C. L. (Eds.), Efficient soil water use: The key to sustainable crop production in the dry areas of West Asia, and North and Sub- Saharan Africa. Aleppo, Syria; Patancheru, India: ICARDA; ICRISAT. pp.381-392.
Soil water ; Water use efficiency ; Optimization ; Farming systems ; Agricultural research ; Research institutes ; Decision support tools ; Models ; Databases ; GIS / South Africa
(Location: IWMI-HQ Call no: 631.7.2 G000 VAN Record No: H025473)
3 Hensley, M.; Bennie, A. T. P. 2003. Applications of water conservation technologies and their impacts on sustainable dryland agriculture in Sub-Saharan Africa. In Beukes, D.; de Villiers, M.; Mkhize, S.; Sally, H.; van Rensburg, L. (Eds.). Proceedings of the Symposium and Workshop on Water Conservation Technologies for Sustainable Dryland Agriculture in Sub-Saharan Africa (WCT), held at Bloem Spa Lodge and Conference Centre, Bloemfontein, South Africa, 8-11 April 2003. Pretoria, South Africa: ARC-Institute for Soil, Climate and Water. pp.2-17.
Water conservation ; Technology ; Water balance ; Soil water ; Runoff ; Simulation models ; Water use efficiency / Africa South of Sahara / South Africa
(Location: IWMI-HQ Call no: IWMI 631.7.1 G100 BEU Record No: H034381)
4 Bennie, A. T. P.; Hensley, M.. 2001. Maximizing precipitation utilization in dryland agriculture in South Africa: A review. Journal of Hydrology, 241:124-139.
(Location: IWMI-HQ Call no: PER Record No: H037878)
5 Tsubo, M.; Walker, S.; Hensley, M.. 2005. Quantifying risk for water harvesting under semi-arid conditions: Part I - Rainfall intensity generation. Agricultural Water Management, 76(2):77-93.
(Location: IWMI-HQ Call no: PER Record No: H037135)
6 Walker, S.; Tsubo, M.; Hensley, M.. 2005. Quantifying risk for water harvesting under semi-arid conditions: Part II - Crop yield simulation. Agricultural Water Management, 76(2):94-107.
(Location: IWMI-HQ Call no: PER Record No: H037136)
7 Hensley, M.; Botha, J. J.; Anderson, J. J.; van Staden, P. P.; du Toit, A. 2000. Optimizing rainfall use efficiency for developing farmers with limited access to irrigation water. Pretoria, South Africa: Water Research Commission. 96p.
Water harvesting ; Precipitation ; Soil water ; Drainage ; Evaporation ; Sunflowers ; Wheat ; Maize ; Yields ; Technology transfer
(Location: IWMI-HQ Call no: 631.7.2 G000 HEN Record No: H039346)
8 Woyessa, Y. E.; Pretorius, E.; van Heerden, P. S.; Hensley, M.; van Rensburg, L. D. 2006. Impact of land use on river basin water balance: a case study of the Modder River Basin, South Africa. Colombo, Sri Lanka: International Water Management Institute (IWMI), Comprehensive Assessment Secretariat. 31p. (Comprehensive Assessment of Water Management in Agriculture Research Report 012) [doi: https://doi.org/10.3910/2009.381]
Water resource management ; River basins ; Climate ; Land cover ; Land use ; Runoff ; Water harvesting ; Farmers’ attitudes ; Crop production / South Africa / Modder River Basin
(Location: IWMI-HQ Call no: IWMI 333.91 G178 WOY Record No: H039454)
(947.4 KB)
9 Hensley, M.; le Roux, P. A.; Botha, J. J.; van Rensburg, L. D. 2019. The role of water conservation strategies and benchmark ecotopes for increasing yields in South Africa’s semi-arid croplands. Water SA, 45(3):393-399. [doi: https://doi.org/10.17159/wsa/2019.v45.i3.6736]
Water conservation ; Strategies ; Crop yield ; Semiarid zones ; Farmland ; Maize ; Land evaluation ; Agricultural productivity ; Subsistence farming ; Farmers ; Rainwater harvesting ; Runoff ; Forecasting ; Technology ; Models ; Case studies / South Africa
(Location: IWMI HQ Call no: e-copy only Record No: H049345)
(0.64 MB)
Recently published results regarding South Africa’s cropping potential show that about one third of the arable land is of low potential, located mainly in semi-arid areas, with the main problem being water shortage. This is therefore an appropriate time to review priorities and procedures, for selecting benchmark ecotopes to represent marginal areas, and for research needs with regard to water conservation strategies to mitigate the problems of low yields. Relevant international principles encapsulated in the words agro-ecology, sustainability and socio-economic conditions, are discussed. Relevant new technologies are described, namely: digital soil mapping that will facilitate the identification of benchmark ecotopes; a stochastic procedure to predict rainfall intensity data from daily rainfall that will facilitate runoff predictions; a crop yield cumulative probability procedure that enables sustainability to be described quantitatively. As a case study, results from a successful field experiment using the infield rainwater harvesting production technique on benchmark ecotopes in a semiarid area, inhabited by subsistence farmers, are presented. The objectives of the study, procedures used and the method of expressing the results are recommended as guidelines for contributing towards mitigating the problem of low crop productivity across a large portion of the arable area in South Africa
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