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Veld composition in relation to grazing capacity die verhouding tussen veld samestelling en weidingskapasiteit
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: D.L. Barnes --- Department of Agriculture (Transvaal Region), N.F.G. Rethman --- Department of Agriculture (Transvaal Region), B.H. Beukes --- Department of Agriculture (Transvaal Region), G.D. Kotzé --- Department of Agriculture (Transvaal Region),Present methods of evaluating veld composition in relation to grazing capacity can be criticised on grounds of subjectivity, especially with regard to the assignment of relative values to the constituent species. Data relating to botanical composition and estimated grazing capacity,... -
A study of variations in floristic composition of highveld in the eastern Transvaal
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: D.L. Barnes --- Department of Agriculture (Transvaal Region), B.H. Beukes --- Department of Agriculture (Transvaal Region), G.D. Kotzé --- Department of Agriculture (Transvaal Region),Floristic surveys of two 1500m line transects in veld provided data which indicated the nature of variations in veld composition, expressed in terms of species, palatability classes or weighted palatability classes. The transects were subjectively subdivided into units comprising relatively... -
Evaluation of the grazing potential of grass species in Tarchonanthus veld of the northern cape1
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: J.H. Fourie --- Department of Agriculture (Free State Region), D.P.J. Opperman --- Department of Pasture Science, B.R. Roberts --- Department of Pasture Science,The grazing value of the seven most prominent grass species in Tarchonanthus‐limeveld was investigated from 1977 to 1981. -
Die invloed van ontblaring en vog op die tanien‐ en polifenolinhoud van Portulacaria afra
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: A.M. Ras --- , Republiek van Suid‐AfrikaThe influence of defoliation and moisture on the tannin and polyphenol contents of Portulacaria afra. To determine whether tannin and total polyphenol contents of Portulacaria afra change owing to damage, different trees were subjected to three intensities of defoliation, namely,... -
A survey of grazed and ungrazed grassland in the south‐eastern Transvaal highveld 1. Palatability composition and grazing capacity
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: D.L. Barnes --- Department of Agricultural Development (Transvaal Region), Republic of South AfricaThe floristic composition of selected veld communities which by virtue of their location were ungrazed, but regularly burned, and which were judged to reflect potential floristic composition, was measured at 112 sites in the southeastern Transvaal highveld. At each site... -
Variations in floristic and palatability composition, yield of veld and of soil characteristics on a paddock scale
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: D.L. Barnes --- Department of Agriculture and Water Supply (Transvaal Region), Republic of South Africa G.D. Kotzé --- Department of Agriculture and Water Supply (Transvaal Region), Republic of South Africa B.H. Beukes --- Department of Agriculture and Water Supply (Transvaal Region), Republic of South Africa C. Kohlmeyer --- Department of Agriculture and Water Supply (Transvaal Region), Republic of South AfricaFive parallel 900-m line-transects were laid out 100 m apart in relatively homogeneous veld. Floristic composition, yields of dry matter, soil forms and series, effective depth, clay content of the top and subsoil, and the pH of the topsoil were... -
The quantification of grazing capacity from grazing — and production values for forage species in semi-arid grasslands of southern Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: HC van der Westhuizen HA Snyman WLJ van Rensburg JHJ PotgieterThe relation between rangeland condition and grazing capacity was determined along a degradation gradient. In studying agronomic values of forage species, the average production per tuft was combined with its grazing preferences, to link grazing values for species in the... -
The effect of defoliation and competition on the regrowth of Themeda triandra and Aristida junciformis subsp. junciformis
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: C.D. Morris --- Agricultural Research Council, Republic of South Africa N.M. Tainton --- Department of Grassland Science, Republic of South AfricaThe effects of a cutting trial, conducted to study the combined influence of defoliation and competition from surrounding vegetation on the vigour of Themeda triandra and Aristida junciformis, were evident after the single season of treatment implementation. Aristida junciformis was... -
Research note: Evaluation of the reliability of local farmer knowledge in Namaqualand, South Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: H.H. Hendricks --- Botany Department, Republic of South Africa F. van der Heyden --- , Republic of South AfricaLocal farmer knowledge of species distribution patterns and plant palatability in Namaqualand, South Africa, was assessed using Participatory Rural Appraisal techniques. These findings were compared with the results obtained using phytosociological techniques (species distribution), and with palatability indices published in... -
Responses to sheep browsing at different stocking rates: Water relations, photosynthesis and carbon allocation in two semi‐arid shrubs
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: F. van der Heyden --- ARC ‐ Range and Forage Institute, c/o Department of Botany, Republic of South Africa F. Roux --- , Republic of South Africa C.N. Cupido --- Department of Plant Sciences, Republic of South Africa M.W.P. Leeuw --- Department of Plant Sciences, Republic of South Africa N. Malo --- Department of Plant Sciences, Republic of South AfricaThe ecophysiological responses of two karoo shrubs to sheep browsing at different stocking rates were studied. The responses of a relatively unpalatable shrub (Pteronia tricephala), and of a shrub of greater palatability (Eriocephalus ericoides) were examined at high, intermediate and... -
The influence of rest period during the growing season on the potential of four perennial tropical grass species as foggage
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: P.C. le Roux C.S. DannhauserThe foggage acceptability of Digitaria eriantha Steud., Anthephora pubescens, Panicum maximum (cultivar Green panic) and Cenchrus ciliaris (cultivar Gayndah), subjected to three different treatments during the growing season, were evaluated during three seasons (1987/1988, 1988/1989 and 1989/1990). Treatments comprised of... -
A description of rangeland on commercial and communal land, Peddie district, South Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: L.N. Kiguli A.R. Palmer A.M. AvisAnalysis of a Landsat TM image from a rangeland near Peddie, Eastern Cape, revealed differences in two vegetation indices (normalised difference vegetation index, NDVI, and moving standard deviation index, MSDI) between communal and commercial rangeland. It was suggested that the... -
Can brush-cutting of Pteronia paniculata improve the composition and productivity of veld in the Succulent Karoo, South Africa?
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: N Saayman --- Department of Agriculture: Western Cape, South Africa CD Morris --- Agricultural Research Council, South Africa MB Hardy --- Department of Agriculture: Western Cape, South Africa JC Botha --- Department of Agriculture: Western Cape, South AfricaPteronia paniculata is an indigenous, unpalatable shrub that invades mismanaged Karooveld, resulting in degraded rangelands with low species diversity and grazing potential. We conducted a series of trials in the Succulent Karoo Randteveld near Barrydale to determine if the uniform... -
Umami in wine
Item type: Journal Article • Journal: • Authors: Peter Klosse --- Academy for International Hospitality Research, Stenden University, PO Box 1298, 8900 CG, Leeuwarden, The Netherlands Academy for Gastronomy, Amersfoortseweg 86, 7346 AA Hoog Soeren, The NetherlandsThe positive effects of umami on flavour are widely documented, but as far as the author is aware, wines are not mentioned in umami-related literature; vice versa, in wine-related scientific publications, references to umami were not found. In the fermentation... -
Umami in wine
Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Peter Klosse --- Academy for International Hospitality Research, Stenden University, The NetherlandsThe positive effects of umami on flavour are widely documented, but as far as the author is aware, wines are not mentioned in umami-related literature; vice versa, in wine-related scientific publications, references to umami were not found. In the fermentation... -
Through the lens of a herder: insights into landscape ethno-ecological knowledge on rangelands in Namaqualand
Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Mogamat Igshaan Samuels --- Agricultural Research Council, South Africa Melvin Swarts --- Agricultural Research Council, South Africa Amy Schroeder --- Department of Biodiversity and Conservation Biology, South Africa Khululiwe Ntombela --- Agricultural Research Council, South Africa Clement Cupido --- Agricultural Research Council, South AfricaPastoral areas around the world, including South Africa, are resource poor and external development interventions to improve conditions have largely been unsuccessful. It has been advocated that the focus should shift from external stakeholders to local pastoralists by incorporating the...