Search Results - "van Rensburg, L.D."

Drought dynamics and interannual rainfall variability on the Ghaap plateau, South Africa, 1918–2014 by Tfwala, C.M., van Rensburg, L.D., Schall, R., Dlamini, P.

“…With drought expected to increase in frequency and severity as a result of climate change, drought and rainfall variability assessments at interannual time…”
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Precipitation intensity-duration-frequency curves and their uncertainties for Ghaap plateau by Tfwala, C.M., van Rensburg, L.D., Schall, R., Mosia, S.M., Dlamini, P.

“…Engineering infrastructures such as stormwater drains and bridges are commonly designed using the concept of Intensity-Duration-Frequency (IDF) curves, which…”
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Nationwide temporal variability of droughts in the Kingdom of Eswatini: 1981–2018 by Tfwala, C.M., Mengistu, A.G., Seyama, E., Mosia, M.S., van Rensburg, L.D., Mvubu, B., Mbingo, M., Dlamini, P.

“…For adequate mitigation and adaptation measures, it is essential to have detailed analysis of droughts patterns. This study determined the i) occurrence and…”
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Wheat (Triticum aestivum L.) growth and yield response to saline irrigation water under controlled conditions by Dikgwatlhe, S.B., Ceronio, G.M., Rensburg, L.D. van

“…Serious agronomic problems occur where saline water is used for irrigation. The effect of irrigation water salinity on wheat was investigated using electrical…”
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Yield and seasonal water productivity of sunflower as affected by tillage and cropping systems under dryland conditions in the Limpopo Province of South Africa by Mzezewa, J., Gwata, E.T., van Rensburg, L.D.

“…► We examined two tillage systems and two cropping types. ► The in-field rainwater harvesting (IRWH) and the conventional tillage (CT). ► Sole sunflower, sole…”
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Advances in soil physics: Application in irrigation and dryland crop production by Rensburg, L.D. van

“…This is the third soil physics review to be published in South African Journal of Plant and Soil. In the previous reviews the focus was broad and covered…”
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Simulating water uptake of irrigated field crops from non-saline water table soils: Validation and application of the model SWAMP by Barnard, J.H., van Rensburg, L.D., Bennie, A.T.P., du Preez, C.C.

“…•Model adequately simulated crop water uptake from water table soils.•Water balance in water table soils was solved satisfactorily with the model.•Amount of…”
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Modelling crop growth and crop water relations in South Africa: Past achievements and lessons for the future by Singels, A., Annandale, J.G., Jager, J.M. De, Schulze, R.E., Inman-Bamber, N.G., Durand, W., Rensburg, L.D. Van, Heerden, P.S. Van, Crosby, C.T., Green, G.C., Steyn, J.M.

“…Mathematical simulation of crop growth and water relations has become indispensable to agricultural science and practice. A critical assessment of how…”
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Modelling the economic tradeoffs between allocating water for crop production or leaching for salinity management by Grove, B., Van Rensburg, L.D., Matthews, N., Barnard, J.H.

“…Salinisation threatens the sustainability of irrigation agriculture and needs to be managed through leaching practices. Under conditions of water scarcity a…”
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SOILS: THE FREE STATE'S AGRICULTURAL BASE by HENSLEY, MALCOLM, LE ROUX, PIET, DU PREEZ, CHRIS, VAN HUYSSTEEN, CORNIE, KOTZE, ELMARIE, VAN RENSBURG, LEON

“…At least one third of South Africa's total grain crop, mainly maize and wheat, is produced in the Free State. Crop production potential and sensitivity to…”
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Transpiration dynamics and water sources for selected indigenous trees under varying soil water content by Tfwala, C.M., van Rensburg, L.D., Bello, Z.A., Zietsman, P.C.

“…The major route through which water from the earth’s surface re-enters the hydrologic cycle in forested ecosystems is via tree transpiration (T). It is…”
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Quantifying the impact of in-field rainwater harvesting (IRWH) production techniques on household food security for communal farmers in Thaba Nchu, Free State Province by Baiphethi, M N, Viljoen, M F, Kundhlande, G, Botha, J J, van Rensburg, L D

“…The paper investigates the impact of employing in-field rainwater harvesting (IRWH) production techniques on household food security for communal farmers in…”
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Whole tree water use: Effects of tree morphology and environmental factors by Tfwala, C.M., Van Rensburg, L.D., Schall, R., Zietsman, P.C., Dlamini, P.

“…•Tree height and stem diameter are positively correlated to tree water use.•Environmental factors are secondary to morphological traits as determinants of…”
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Calibration of compensation heat pulse velocity technique for measuring transpiration of selected indigenous trees using weighing lysimeters by Tfwala, C.M., van Rensburg, L.D., Bello, Z.A., Green, S.R.

“…•Compensation heat pulse velocity (CHPV) for sap flow measurement in indigenous trees.•CHPV is as accurate as weighing lysimetry in determining tree water…”
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Canola water use indicators as affected by sustained deficit irrigation and plant density in central Free State, South Africa by Seetseng, K.A, Barnard, J.H, van Rensburg, L.D, du Preez, C.C

“…In South Africa canola (Brassica napus L.) is cultivated in rotation with wheat under winter rainfall in the Western Cape Province, primarily for seed to make…”
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Groundwater contribution to transpiration of trees under wet and dry soil conditions by Tfwala, C.M., Rensburg, L.D., Bello, Z.A.

“…The objective of this study was to partition tree T under shallow groundwater table conditions into groundwater (Tgw) and soil water (Tsw). Three indigenous…”
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MALT BARLEY (HORDEUM VULGARE L.) WATER USE AND GRAIN YIELD RESPONSE TO SALINE IRRIGATION UNDER SHALLOW GROUNDWATER TABLE CONDITIONS by Mathinya, V.N., Rensburg, L.D., Mavimbela, S.S.W., Barnard, J.H.

“…Global water scarcity and salinity of irrigated lands remain a concern. Shallow groundwater tables, often present in irrigation areas, may serve as…”
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Influence of soils and different phases of reproductive growth stage on transpiration efficiency of irrigated canola by Tfwala, C.M., Haka, I.B. Ukoh, Rensburg, L.D., Du Preez, C.C.

“…Much has been reported on the agronomic aspects of canola (Brassica napus L.), but there is a lack of information on the crop's transpiration (T). The…”
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Characterisation of rainfall at a semi-arid ecotope in the Limpopo Province (South Africa) and its implications for sustainable crop production by Mzezewa, Jestinos, Van Rensburg, Leon D., Misi, Titus

“…Detailed knowledge of rainfall regime is an important prerequisite for agricultural planning. Despite the importance of rain-fed agriculture to food security…”
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SWAMP: A soil layer water supply model for simulating macroscopic crop water uptake under osmotic stress by Barnard, J.H., Bennie, A.T.P., van Rensburg, L.D., Preez, C.C. du

“…•Model was calibrated to simulate salt accumulation in irrigated water table soils.•Under these conditions a reduction in water uptake (peas, maize) was…”
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