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The influence of nitrate and ammonium forms of nitrogen fertilizer on the growth and osmoregulation of digitaria eriantha and Chloris gayana grown under saline conditions
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: LesleyJ. Gray --- Department of Botany, MaureenM. Wolfson --- Department of Botany,Digltaria eriantha and Chloris gayana were grown under controlled conditions for three months and were treated with a nutrient solution containing 150 mMol NaCl and the following nitrogen sources: 25 or 200 mg/l NH4 +‐N or NO3 −‐N or no... -
Seisoensveranderinge in die koolhidraatinhoud van jong appelbome
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: P. J.C. Stassen --- ,Gereelde ontledings van die koolhidraatfraksies in jong appelbome het getoon dat suiker 'n relatief klein gedeelte van die koolhidrate in die boomdele uitmaak, en veral in die wortels voorkom. Stysel akkumuleer in die wortels tot finale blaarval in die winter,... -
Intercropping of beans (Phaseolus vulgaris L.) and sugar-cane: The effect of inter-specific competition on the growth of plant cane
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: M. F.A. Leclezio --- Department of Crop Science, J.D. Lea --- Department of Crop Science, P.K. Moberly --- ,The competitive effects of intercropped beans (maturation period: three months) on the growth, tiller development and yield of plant sugar-cane (maturation period: 18 months) in the subhumid coast-hinterland of Natal were investigated over two seasons. In the first season rainfall... -
Carbohydrate fractions of Themeda triandra (red grass). I. Free sugars and water soluble polysaccharides
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: P.L. van Biljon --- Department of Biochemistry, P.L. le Roux --- Department of Biochemistry,Sucrose, glucose and fructose were the major free sugars in the leaves, stems and inflorescences of T. triandra, while small quantities of rhamnose, xylose, galactose, mannose, ribose, cellobiose, sedoheptulose and erythrose were also present. Several polysaccharides and components with lower... -
Effect of water stress on cane growth and water use of sugar cane
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: N.G. Inman-Bamber --- , Republic of South Africa J.M. de Jager --- , Republic of South AfricaThe growth and water use of three sugar cane cultivars, NCo376, N12 and N14, were measured under varying degrees of water stress controlled by means of a movable rain shelter. Plots of a first ratoon cane crop were allowed to... -
A growth model for sugar-cane based on a simple carbon balance and the CERES-Maize water balance
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: N.G. Inman-Bamber --- , Republic of South AfricaThe economic optimum harvest age for sugar-cane depends to a large extent on how rates of photosynthesis and respiration change with age. A simple model of the carbon balance in which a constant photosynthetic efficiency was assumed, accounted to a... -
Effect of sugary disease exudates on germination, seedling development and predisposition to seedling diseases of sorghum (Sorghum bicolor)
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: N.W. McLaren --- Summer Grain Centre, Republic of South AfricaSorghum harvested for seed from Claviceps africana-infected fields becomes coated with sugary disease exudates in which the fungal spores are borne. The role of exudates in the inhibition of seed germination, seedling growth and predisposition to seedling diseases was investigated... -
Efficacy of systemic fungicides and timing of preventative sprays in the control of sugary disease of grain sorghum (Sorghum bicolor)
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: N.W. McLaren --- , Republic of South AfricaEight systemic fungicides, benomyl, bitertanol, carbendazim/flusilazol, CG169374, procymidone, propiconazole, terbuconazole and triadimenol, were evaluated in two separate field trials during the 1989/90 and 1990/91 seasons to determine their efficacy against the control of sugary disease of sorghum with a single... -
The relationship between ENSO and rainfall and yield in the South African sugar industry
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: A. Singels --- Department of Agronomy, Republic of South Africa C.N. Bezuidenhout --- Department of Agronomy, Republic of South AfricaInformation on the effects of El Nino on local climate and sugarcane production will assist planning and management. The objective of this study was to investigate the relationship between the southern oscillation index (SOI) and rainfall and sugarcane yields in... -
Anatomical and compositional changes during fruit development of ‘Galia’ melons
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: N. J.J. Combrink --- Department of Agronomy, Republic of South Africa G.A. Agenbag --- Department of Agronomy, Republic of South Africa P. Langenhoven --- Department of Agronomy, Republic of South Africa G. Jacobs --- Department of Horticultural Science, Republic of South Africa E.M. Marais --- Department of Botany, Republic of South Africa‘Galia’ melons were grown under controlled conditions and pruned to bear two fruits with 19 leaves per plant. Leaves and fruits were sampled and analysed at eight different stages. Pericarp cell division and enlargement occurred during the first week after... -
Seasonal variations in carbohydrate content of Carica papaya plants
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: P. Allan --- Horticultural Science, Republic of South AfricaMonthly samples were collected of roots, stems, petioles and leaf blades of clonal female ‘Honey Gold’ papaw (Carica papaya L.) plants, in the cool subtropical Pietermaritzburg area, to study any seasonal variations in carbohydrate content of this tropical plant which... -
Use of solid waste bagasse from a paper mill as an organic amendment and its effect on some soil properties: a case study
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J.C. Hughes --- Soil Science, South Africa S. J.A. Girdlestone --- Soil Science, South AfricaAt a paper mill in KwaZulu-Natal, South Africa bagasse waste was disposed of by burying it in a layer resulting in variable sugar cane growth. The waste was mostly organic fibres, had a high water holding capacity, and contained small... -
Effect of nitrogen supply on the production and distribution of dry matter in sugarcane
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J. C.S. Allison --- , South Africa N.W. Pammenter --- , South AfricaSugarcane productivity is probably limited by characteristically slow early growth and, later, by progressively decreasing leaf nitrogen (N) concentration. Increasing the N supply might increase productivity by influencing these attributes. In a pot experiment on two cultivars N was supplied... -
Effect of leaf feeding by Melanaphis sacchari (Zehntner) (Homoptera: Aphididae), on sorghum grain quality
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J. van den Berg --- , South Africa A.J. Pretorius --- , South Africa M. van Loggerenberg --- , South AfricaA study was conducted to determine the effect of leaf feeding by the aphid, Melanaphis sacchari, on grain quality of sorghum. A field trial was planted with two sub-blocks. Each sub-block was planted with ten similar sorghum hybrids. One sub-block... -
Efficacy of glyphosate, alternative post-emergence herbicides and tillage for control of Cynodon dactylon
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: PL Campbell --- , Republic of South AfricaCynodon dactylon (L.) Pers (cynodon) is a major weed in the South African sugarcane industry. Current recommendations involve repeated application of glyphosate for prolonged control. This paper describes three trials of a study to identify alternative treatments. Trial 1 screened... -
Image analysis to quantify herbicide efficacy for Cynodon dactylon control
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: P.L. Campbell --- , Republic of South Africa M.T. Smith --- , Republic of South Africa C. Sewpersad --- , Republic of South Africa M. van den Berg --- , Republic of South AfricaStudies on the effectiveness of herbicides for control of Cynodon dactylon (L.) Pers. (cynodon) normally rely on visual recording methods, which are rapid and convenient, but lack objectiveness and reproducibility. To address this problem, a computer software package was customized... -
Frodo and Darius: South African potato cultivars with good processing quality
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J.M. Steyn --- Department of Plant Production and Soil Science, South Africa E.B. Geremew --- Department of Plant Production and Soil Science, South Africa J.G. Annandale --- Department of Plant Production and Soil Science, South Africa P.J. Steyn --- , South AfricaTwo newly released South African potato cultivars, Frodo and Darius, were compared with two foreign processing cultivars, Pentland Dell and Shepody. The cultivars were grown under sprinkler irrigation and evaluated for external and internal tuber characteristics and processing quality. The... -
Soil aggregate properties and total available water as affected by sugar cane (Saccharum hybrid sp.) production in Mauritius
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: L.R. Ng Cheong --- , Mauritius K.F. Ng Kee Kwong --- , Mauritius C.c. Du Preez --- Department of Soil, Crop and Climate Sciences, South AfricaConcerns within the sugar industry of Mauritius with respect to soil degradation caused by sugar cane cropping have led to a study on soil quality. As part of this study, the effects of sugar cane production, i.e. cropping and adoption... -
Non-uptake of silicon and variable nematode species relationships between different levels of this element in sugarcane
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: S.D. Berry --- , South Africa V.W. Spaull --- , South Africa P.V. Ramouthar --- , South Africa P. Cadet --- , FranceSilicon (Si) is known to alleviate biotic and abiotic stresses in many crops. Much of the research on the biotic influence of Si has dealt with insects and fungi, with no proper studies on the effect of Si on plant-parasitic... -
Simultaneous selection for yield and ratooning ability in sugarcane genotypes using analysis of covariance
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: MM Zhou --- , South Africa MD Shoko --- Faculty of Agricultural Sciences, ZimbabweRatooning ability increases sugarcane production economics by reducing frequency of planting. During sugarcane breeding, indirect selection for pest resistance and direct selection for high ratoon yields increases ratooning ability. The objective of this study was to describe the simultaneous screening... -
Family selection gains for quality traits among South African sugarcane breeding populations
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: MM Zhou --- South African Sugarcane Research Institute, South Africa ML Lichakane --- South African Sugarcane Research Institute, South AfricaIn sugarcane breeding, family selection has been shown to produce larger gains than individual plant selection. During family selection, whole families of seedlings are selected or rejected based on data derived from replicated family plots. The objective of this study... -
Estimation of thrips (Fulmekiola serrata Kobus) density in sugarcane using leaf-level hyperspectral data
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: ElfatihM Abdel-Rahman --- School of Environmental Sciences, South Africa Mike Way --- , South Africa Fethi Ahmed --- School of Environmental Sciences, South Africa Riyad Ismail --- School of Environmental Sciences, South Africa Elhadi Adam --- School of Environmental Sciences, South AfricaThe aim of this study was to investigate the potential use of leaf-level hyperspectral data to predict the density of sugarcane thrips Fulmekiola serrata (Kobus). A hand-held spectroradiometer was used to make the spectral measurements on spindle leaves of 4-... -
Evaluation of Desmodium uncinatum, Fagopyrum esculentum and Brachiaria humidicola as potential green manure crops for nematode management in sugarcane
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Ruth Rhodes --- South African Sugarcane Research Institute, South Africa Shaun D Berry --- South African Sugarcane Research Institute, South Africa Prabashnie V Ramouthar --- South African Sugarcane Research Institute, South Africa R Stuart Rutherford --- South African Sugarcane Research Institute, South AfricaPlant-parasitic nematodes remain a challenge to sugarcane growers in South Africa, and alternatives to chemical control are desirable. This project aimed to determine the impact of green manure crops Desmodium uncinatum, Fagopyrum esculentum and Brachiaria humidicola on nematodes and subsequent... -
Current opinion: Is added dietary sugar detrimental to health?
Item type: Journal Article • Journal: South African Family Practice • Authors: VL Van den Berg --- Department of Nutrition and Dietetics,The intake of added dietary sugars has escalated dramatically since the 1970s, mostly due to a global increase in the consumption of sugar-sweetened beverages (SSBs). This trend has sparked concerns among scientists and consumers alike regarding the safety of added... -
Perceptions of sugar mommy practices in South Africa
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Nancy Phaswana-Mafuya --- Human Sciences Research Council, South Africa Olive Shisana --- Human Sciences Research Council, South Africa Adlai Davids --- Human Sciences Research Council, South Africa Cily Tabane --- University of the Witwatersrand, South Africa Margaret Mbelle --- Human Sciences Research Council, South Africa Gladys Matseke --- Human Sciences Research Council, South Africa Mercy Banyini --- University of Venda, South Africa Queen KekanaThe study sought to explore sugar mommy practices regarding their occurrence, acceptability as well as perceived reasons why older women and younger men enter into sugar mommy relationships. An exploratory qualitative study involving 135 participants from 11 diverse focus groups... -
Sugar preferences and digestion by Cape white-eyes, Zosterops virens, fed artificial fruit diets
Item type: Journal Article • Journal: African Zoology • Authors: A. E. Wellmann --- School of Biological and Conservation Sciences, University of KwaZulu-Natal, South Africa C. T. Downs --- School of Biological and Conservation Sciences, University of KwaZulu-Natal, South AfricaSugar preferences and digestion of sugars in artificial fruit of different sugar types and concentrations were investigated in a South African facultative frugivore, the Cape white-eye (Zosterops virens). We studied sugar preferences, daily food and energy intake, and digestive efficiencies... -
Bee food: the chemistry and nutritional value of nectar, pollen and mixtures of the two
Item type: Journal Article • Journal: African Zoology • Authors: Susan W. Nicolson --- Department of Zoology and Entomology, South AfricaBees are herbivorous insects, consuming nectar and pollen throughout their life cycles. This paper is a brief review of the chemistry of these two floral resources and the implications for bee nutrition. Nectar is primarily an energy source, but in... -
Sugar type and concentration preference of the Cape white-eye, Zosterops virens
Item type: Journal Article • Journal: African Zoology • Authors: Minke Witteveen --- University of KwaZulu-Natal, South Africa Mark Brown --- University of KwaZulu-Natal, South AfricaDifferences in nectar characteristics of bird-pollinated plants were originally attributed to whether the plant was pollinated by non-passerine hummingbirds or passerine nectarivores. Subsequently this has been refuted and it is now hypothesized that these differences reflect whether the plants are... -
Is protein content in the diet of Wahlberg’s epauletted fruit bats, Epomophorus wahlbergi, important?
Item type: Journal Article • Journal: African Zoology • Authors: Babalwa R. Mqokeli --- School of Life Sciences, University of KwaZulu-Natal, South Africa Colleen T. Downs --- School of Life Sciences, University of KwaZulu-Natal, South AfricaWahlberg’s epauletted fruit bat, Epomophorus wahlbergi, feeds on a range of fruit, nectar, pollen and flowers. Frugivores may have difficulties in maintaining their protein requirements since fruit are generally high in sugar content but low in protein content. Some studies... -
Minimum detectable differences for cane yield, sucrose content and sugar yield among the Midlands and Coastal Short Cycle sugarcane breeding programmes in South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Marvellous Zhou --- South African Sugarcane Research Institute, Mt Edgecombe, South Africa; and Department of Plant Breeding, University of the Free State, South AfricaMinimum detectable differences (MDD) are the smallest difference between two genotypes that can be determined accurately at a given statistical significance threshold. The effect of genotype by environment interaction reduces accuracy of determining genetic values, increases MDD and reduces selection... -
Water and radiation use efficiency of sugarcane for bioethanol production in South Africa, benchmarked against other selected crops
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Francois C Olivier --- South African Sugarcane Research Institute, South Africa Abraham Singels --- South African Sugarcane Research Institute, South Africa Alana B Eksteen --- South African Sugarcane Research Institute, South AfricaThere are indications that high-fibre sugarcane genotypes may produce more biomass and use resources more efficiently than conventional sugarcane cultivars. The objective of this research was to gather quantitative information on resource use for selected conventional and high-fibre sugarcane genotypes... -
Family versus individual plant selection for stem borer (Eldana saccharina) resistance in early stages of sugarcane breeding in South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Marvellous Zhou --- South African Sugarcane Research Institute, South Africa Alfred Mokwele --- South African Sugarcane Research Institute, South AfricaEldana saccharina is an indigenous lepidopteran insect pest and the most damaging stem borer of sugarcane in southern Africa. Breeding for E. saccharina resistance in South Africa started in 1980 by crossing resistant parents (expected to possess resistance genes) and... -
Measuring micronutrient intakes at different levels of sugar consumption in a population in transition: the Transition and Health during Urbanisation in South Africa (THUSA) study
Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Ue MacIntyre --- Department of Human Nutrition, Cs Venter --- North-West University, A. Kruger --- North-West University, M. Serfontein --- North-West University,Objective: The objective was to investigate the absolute micronutrient intake and the possibility of micronutrient dilution of added sugar in the diets of an African population in nutritional transition. -
Farmer perceptions of climate change impacts on Swaziland’s sugar industry
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Bon’sile Faith Nicollete Mhlanga-Ndlovu --- Department of Environmental Science, South Africa Godwell Nhamo --- Institute for Corporate Citizenship, University of South Africa, South AfricaThis study investigates the perceptions of sugarcane farmers on climate change impacts and their potential alternative livelihoods in the Lowveld of Swaziland with the objective of informing research and policy initiatives. The study obtained data mainly from a survey involving... -
Growth and yield responses of commercial sugarcane cultivars to mulching in the coastal rainfed region of South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Nkosinathi Nxumalo --- South African Sugarcane Research Institute, South Africa Sanesh Ramburan --- South African Sugarcane Research Institute, South Africa J Martin Steyn --- Department of Plant Production and Soil Science, South AfricaThe perceived negative cultivar responses to mulching has limited the adoption of this practice in the South African sugarcane industry. This study was aimed at evaluating cane yield and quality responses and population dynamics of popular cultivars to mulching in... -
Cultivar genetic gains from 50 years of irrigated sugarcane breeding in South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Marvellous Zhou --- Department of Plant Breeding, South AfricaCultivar genetic gains provide a measure of benefits to growers from sugarcane breeding programmes and determine the effectiveness of cultivar development. The objective of this study was to determine the genetic gains for cane yield, percent estimated recoverable crystal (ERC%)... -
Consumption patterns and demographic factors influence on fruit juice classifications, health benefits and sugar content perceptions in two Municipal Districts in Cape Town, Western Cape, South Africa
Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Rodney Graeme Duffett --- Marketing Department, South AfricaObjectives: The study ascertained consumer perceptions of differences between fruit juice classifications regarding their respective health benefits and sugar content. The research also considered the influence of consumption patterns and demographic factors. -
Location and crop-year effects on sugarcane genotype performance for the coastal short cycle breeding programmes in South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Sphamandla Sengwayo --- South African Sugarcane Research Institute, South Africa Marvellous Zhou --- South African Sugarcane Research Institute, South Africa Maryke Labuschagne --- Department of Plant Sciences, South AfricaGenotypes are tested in several environments to evaluate the influence of genotype × environment interactions prior to their release as cultivars. The objective of this study was to determine location and crop-year effects and their implications on coastal short cycle... -
Changes in bat community composition and activity patterns across a conservation-agriculture boundary
Item type: Journal Article • Journal: African Zoology • Authors: Fezile Mtsetfwa --- Department of Wildlife Ecology and Conservation, School of Natural Resource and Environment, United States Robert A McCleery --- Department of Wildlife Ecology and Conservation, School of Natural Resource and Environment, United States Ara Monadjem --- Department of Wildlife Ecology and Conservation, School of Natural Resource and Environment, United StatesAgricultural landscapes are typically associated with a decreased biodiversity, particularly when they extend across large spatial scales. Despite the fact that some African bat species seem to provide essential ecosystem services across landscapes, we only have a limited understanding of... -
Weed management in sugarcane using a combination of imazapyr followed by velvet bean as a break crop
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Peta L Campbell --- South African Sugarcane Research Institute, South Africa Richard P Beckett --- School of Life Sciences, South Africa Graeme W Leslie --- Simbithi Estate, South AfricaWhile farmers have used glyphosate to control the growth of weeds such as Cynodon dactylon (cynodon) in sugarcane fields for many years, its use has problems which include poor persistence in the soil and the development of tolerance. Here the... -
Conceptual framework for the evaluation of sugar tax systems
Item type: Journal Article • Journal: South African Journal of Accounting Research • Authors: Marese Lombard --- School of Accountancy, Faculty of Economic and Management Sciences, South Africa Alta Koekemoer --- School of Accountancy, Faculty of Economic and Management Sciences, South AfricaThe World Health Organization has urged countries to implement a sin tax on items containing high levels of sugar to address the current worldwide obesity epidemic. Consequently, sugar taxes have become increasingly popular. However, many sugar tax systems are implemented... -
Using logistic regression models to determine optimum combination of cane yield components among sugarcane breeding populations
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Marvellous Zhou --- Department of Plant Breeding, South AfricaPlant breeding aims to produce cultivars that possess optimum trait combinations for yield and other traits. Path coefficient analysis in sugarcane showed number, height and diameter of stalks control cane yield. The objectives of this study were to determine optimum... -
Phytochemical profiling and soluble sugars of African ginger (Siphonochilus aethiopicus) from different growing regions in South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Salmina N Mokgehle --- Horticultural Science, School of Agricultural, Earth and Environmental Sciences, South Africa Samson Z Tesfay --- Horticultural Science, School of Agricultural, Earth and Environmental Sciences, South Africa Manaka J Makgato --- Agricultural Research Council–Vegetable and Ornamental Plants, South Africa Hintsa T Araya --- Agricultural Research Council–Vegetable and Ornamental Plants, South AfricaAfrican ginger (Siphonochilus aethiopicus) is distributed in different regions of South Africa and contains bioactive constituents that provide health benefits. However, there is limited information describing the phytochemical and soluble sugars in different parts of the plant from different regions... -
Effect of mound-building termites on soil physicochemical properties and sugarcane stalk heights
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Sandile S Mthimkhulu --- South African Sugarcane Research Institute, South Africa Neil Miles --- South African Sugarcane Research Institute, South Africa Louis W Titshall --- South African Sugarcane Research Institute, South Africa Phesheya Dlamini --- Department of Plant Production, Soil Science and Agricultural Engineering, South AfricaThis study investigated soil factors responsible for localised patches of enhanced sugarcane growth on the remains of termite (Macrotermes natalensis) mounds observed on predominantly coarse-textured soils (weak sands) of KwaZulu-Natal province, South Africa. Soil samples (0–20 cm depth) were collected... -
Optimising the number of test sites, crop-years and replications to maximize post-release testing efficiencies
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Sbongeleni Warren Duma --- School of Agricultural, Earth and Environmental Sciences, South Africa Hussein Shimelis --- School of Agricultural, Earth and Environmental Sciences, South Africa Sanesh Ramburan --- School of Agricultural, Earth and Environmental Sciences, South Africa Admire Isaac Tichafa Shayanowako --- School of Agricultural, Earth and Environmental Sciences, South AfricaThe South African sugar industry develops commercial sugarcane cultivars across multiple testing sites, crop-years and replications. The extent of such parameters has not been well quantified for optimum breeding and resource allocation. The objective of this study was to identify... -
Comparing beverage consumption, physical activity and anthropometry among young adult urban- and rural-dwelling African women
Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Philippe Jean-Luc Gradidge --- Centre for Exercise Science and Sports Medicine, Faculty of Health Sciences, South Africa Herculina Salome Kruger --- Centre of Excellence for Nutrition, South AfricaBeverage consumption, physical activity, body mass index and waist circumference were compared in age-matched (aged 18–30 years) groups of young South African women from urban (n = 78) and rural (n = 94) settings. Obesity was higher in the rural group, driven by a... -
Consumption of added sugars among undergraduate students at a South African university and its association with BMI
Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Ra’eesah Nakhooda --- , South Africa Nicola Wiles --- , South AfricaObjectives: A study was undertaken to quantify added sugar intake; to show the association between added sugar intake and body mass index (BMI); and to identify determinants of added sugar and sugar-sweetened beverage (SSB) intake. -
Reliability and quality of artificial nectar feeders for birds in the Cape Floristic Region
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Anina Coetzee --- , South Africa Phoebe Barnard --- , South Africa Anton Pauw --- , South AfricaSupplementary feeding of birds may have considerable ecological and evolutionary effects on bird communities. However, there is a lack of basic information on the prevalence, frequency and quality of supplementary feeders, especially in African urban areas. Here we describe the... -
Food and beverages undermining elderly health: three food-based dietary guidelines to avoid or delay chronic diseases of lifestyle among the elderly in South Africa
Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Yasaman Jamshidi-Naeini --- , United States Gugulethu Moyo --- , United States Carin Napier --- , South Africa Wilna Oldewage-Theron --- , United StatesDietary patterns among South African older adults indicate a moderate intake of total fat and salt, as well as a high sugar intake. Total fat, saturated fat, sugar and salt intakes are associated with non-communicable diseases (NCDs) and mortality. Processed... -
Identification of technical factors that influence sugar productivity of factories in Sudan
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Tageldeen S. Ibrahim --- , South Africa Tilahun S. Workneh --- , South AfricaThis study was conducted to identify the factors influencing the productivity of the sugar industry in Sudan. The study involved collecting data from selected sugar mill databases, namely, the Kenana, Guneid, Halfa, Sinnar, Assalaya and White-Nile sugar mills. The data... -
The short-term effects of surface-applied dolomitic lime and gypsum on soil chemical properties and yields of sugarcane ratoon crops in KwaZulu-Natal, South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Sandile Siphesihle Mthimkhulu --- , South Africa Dimpho Elvis Elephant --- , South Africa Neil Miles --- , South Africa Louis William Titshall --- , South AfricaThis study investigated the effects of surface-application of lime and gypsum on soil properties and yields of ratoon sugarcane crops. Treatments involved once-off surface application of dolomitic lime (L), gypsum (G) and dolomitic lime plus gypsum (LG) in factorial combination,... -
Sugarcane cultivar genetic gains for coastal agro-ecological regions of South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Marvellous Zhou --- South African Sugarcane Research Institute, South AfricaCultivar genetic gains quantify the increase in productivity from release of cultivars and measure genetic improvements from plant breeding. The objectives of this study were to evaluate the genetic gains from sugarcane coastal cultivars and evaluate their contribution to productivity... -
Some physical properties of a sandy clay loam humic soil under native forest and sugarcane in northern KwaZulu-Natal, South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: --- School of Agricultural, South Africa --- School of Agricultural, South Africa --- School of Agricultural, South AfricaThe conversion of native forest land to commercial farming can have profound effects on soil physical properties. This study compared bulk density (BD), saturated hydraulic conductivity (Ks) and other physical properties of a sandy loam humic soil under native forest... -
Using generalised additive models to visualise the annual cycle of primary feather moult patterns
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Rebecca R Irons --- University of Cape Town, South Africa Alan TK Lee --- University of Cape Town, South Africa Robert L Thomson --- University of Cape Town, South Africa Birgit Erni --- University of Cape Town, South AfricaMoult is a vital but energy-demanding event in a bird's phenological cycle. Primary moult is the shedding of old feathers and the regeneration of new flight feathers to maintain efficient functioning of these critical structures. Life history events, such as... -
Does sugar taxation on sugar-sweetened beverages alter purchasing behaviour of South African consumers? Perspectives of dietitians and key industry role-players
Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Yolande Smit --- Stellenbosch University, South Africa Zarina Ebrahim --- Stellenbosch University, South Africa Maritha Marais --- Stellenbosch University, South Africa Daan Nel --- Centre for Statistical Consultation, Stellenbosch University, South Africa Nelene Koen --- Stellenbosch University, South Africa -
Over half of South African beverages will require warning labels for high sugar and/or artificial sweeteners
Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Wantonda Mukhovha --- University of the Witwatersrand, South Africa Naledi Sibiya --- University of the Witwatersrand, South Africa Thanujj Kisten --- University of the Witwatersrand, South Africa Molatela K Mamabolo --- University of the Witwatersrand, South Africa Siphiwe N Dlamini --- University of the Witwatersrand, South AfricaObjective: To determine the proportion of commercially available beverages that may require warning labels for high sugar content and the presence of artificial sweeteners in South Africa. -
Sugar-sweetened beverage intake and anthropometric profile of grade 6 learners in the Nelson Mandela Bay area, South Africa: a mixed-methods study
Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Candice Stansbury --- Stellenbosch University, South Africa Zarina Ebrahim --- Stellenbosch University, South Africa Daniel Nel --- Stellenbosch University, South Africa Penelope Love --- Deakin University, Australia Yolande Smit --- Stellenbosch University, South AfricaBackground: A paucity of data exists regarding the intake of sugar-sweetened beverages (SSBs) among children and the prevalence of childhood overweight and obesity in the Nelson Mandela Bay area in South Africa (SA). -
11. Sugar and health: a food-based dietary guideline for South Africa
Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Temple NJ --- Centre for Science, Athabasca University, Canada Steyn NP --- Knowledge Systems, Human Sciences Research Council,The intake of added sugar appears to be increasing steadily across the South African population. Children typically consume approximately 40-60 g/day, possibly rising to as much as 100 g/day in adolescents. This represents roughly 5-10% of dietary energy, but could... -
Acceptance, availability, and accessibility of reformulated sugar-sweetened beverages in Pietermaritzburg, KwaZulu-Natal, South Africa
Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Nikita Baijnath --- University of KwaZulu-Natal, South Africa Kirthee Pillay --- University of KwaZulu-Natal, South Africa Nicola Wiles --- University of KwaZulu-Natal, South Africa