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The effect of various tillage methods on soil and water losses from maize lands
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: W.B. Russell --- Department of Agricultural Development, Republic of South AfricaNatural runoff plots on which maize was produced were laid out at Cedara on a well-drained clay loam Doveton soil and showed, over a six-year period, the benefits to be gained from adopting conservation tillage practices. The four tillage and... -
An inexpensive, portable rain simulator: construction and test data
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: A.S. Claassens --- Department of Soil Science and Plant Nutrition, Republic of South Africa H. v.H. van der Watt --- Department of Soil Science and Plant Nutrition, Republic of South AfricaConstruction details of an inexpensive, portable rain simulator are given. The dismountable components are easily transported on a light truck. The flat spray nozzles used produced rain with a >90% coefficient of uniformity over a 1-m2 test plot. Drop sizes... -
Factors affecting runoff and soil loss under simulated rainfall on a sandy Bainsvlei Amalia soil
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Y.E. Woyessa --- Department of Soil, Crop and Climate Sciences, South Africa A. T.P. Bennie --- Department of Soil, Crop and Climate Sciences, South AfricaThis study was conducted on a long-term tillage experiment that was designed to evaluate appropriate tillage practices for sustainable dryland crop production. Measurements of runoff and soil loss were conducted on a sandy Bainsvlei Amalia soil (88.0% sand, 3.6% silt,... -
Tillage-crop residue management and rainfall-runoff relationships for the Alemaya catchment in Eastern Ethiopia
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Y.E. Woyessa --- Department of Soil, Crop and Climate Sciences, South Africa A. T.P. Bennie --- Department of Soil, Crop and Climate Sciences, South AfricaA field study was conducted in the Alemaya catchment, Eastern Ethiopia, with the objective of determining the effect of tillage practices, crop reside cover and rainfall characteristics on runoff during two rainfall seasons on a clayey Regosol with 5% slope... -
Evaluation of soil conservation measures on a highly erodible soil in the Free State province, South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: D Garry Paterson --- Agricultural Research Council–Institute for Soil, Climate and Water, South Africa Hendrik J Smith --- Agricultural Research Council–Institute for Soil, Climate and Water, South Africa Andri van Greunen --- Free State Provincial Department of Agriculture, South AfricaSoil erosion is a problem in South Africa, and is exacerbated by poor land use practices and erodible soils. Several methods are available to address the problem and a runoff trial was conducted over four rainfall seasons on an erodible,... -
RATE OF EROSION IN THE CATCHMENT OF THE BULBERGFONTEIN DAM NEAR REDDERSBURG IN THE ORANGE FREE STATE
Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: J.S. Ie Roux --- Department of Geography, South Africa Z.N. Roos --- Department of Geography, South AfricaThe volume of sediment in the Bulbergfontein Dam was computed after mapping the area of the dam and ascertaining the depth of the sediment by digging and augering. The watershed of the impoundment had been delimited by means of aerial... -
Quantification of the soil-water balance under different veld condition classes in a semi-arid climate
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: H.A. SnymanThe monthly herbage production, water-use efficiency (WUE: above-ground phytomass production per unit of evapotranspiration), surface runoff and soil loss were determined on grassland in three different ecological conditions, viz. poor, moderate and good, over a four year (1995/1996 to 1998/1999)... -
The effectiveness of riparian zones in mitigating water quality impacts in an agriculturally dominated river system in South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: CR Petersen --- , South Africa NZ Jovanovic --- , South Africa MC Grenfell --- , South AfricaThis study evaluates relationships between contrasting land uses representing an anthropogenic impact gradient in a coastal agricultural catchment, and riparian vegetation, as reflected in changes in nutrient dynamics and water quality. The objectives were to: 1) determine the water and...