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The influence of different forms and concentrations of nitrogen on the growth and metabolism of digitaria eriantha and chloris Gayana grown under saline conditions
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: J M Brauer --- Department of Botany, MaureenM Wolfson --- Department of Botany,Chloris gayana and Digitaria eriantha plants were watered with nutrient media containing a high concentration of sodium chloride (150 mM) and either high (200 mg/l) or low (25 mg/l) concentrations of nitrate nitrogen and ammonium nitrogen. Dry mass and leaf... -
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... -
Effect of exchangeable sodium and phosphogypsum on the hydraulic properties of several South African soils
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: H.M. du Plessis --- , I. Shainberg --- ,The susceptibility of soils to the deleterious effects of sodicity was assessed for samples which varied with respect to physical, mineralogical and other properties. For this purpose soil samples were collected from different locations in South Africa. The effect of... -
Effects of clay mineralogy and soil sodicity on soil infiltration rate
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: G.J. Levy --- , Republic of South Africa H. v.H. van der Watt --- Department of Soil Science and Plant Nutrition, Republic of South AfricaCrust formation and infiltration rates and their dependence on the exchangeable sodium percentage (ESP) of South African (SA) soils, with kaolinite and illite as the dominant clay minerals, were studied by subjecting them to simulated rain. The final infiltration rate... -
Tolerance of almond (Prunus amygdalus) and peach (P. Persica) seedlings to metam-sodium
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: A.F. Lourens --- , Republic of South Africa A.H. Lange --- ,The tolerance of 1-year-old almond seedlings (Prunus amygdalus) in a loamy sand, and newly planted peach seedlings (P. persica) in washed river sand to low concentrations of metam-sodium (sodium methyldithiocar- bamate) in the root zone was investigated. Phytotoxic symptoms were... -
Comparative effects of daminozide, dikegulac-sodium, paclobutrazol and uniconazole on the plant height of Petunia hybrida
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Debra van der Poll --- Department Horticultural Science, Republic of South Africa P. Allan --- Department Horticultural Science, Republic of South AfricaTwo experiments were carried out on ‘Bonanza’ and ‘Velvet Carpet’ petunia seedlings using four growth regulators (daminozide, dikegulac-sodium, paclobutrazol and uniconazole) at four different concentration levels and three application frequencies. The aim of these experiments was to determine which treatments... -
Soil fumigation for lettuce production
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: D.M. Holcroft --- Department of Horticultural Science, Republic of South Africa I.E. Smith --- Department of Horticultural Science, Republic of South AfricaA Clovelly soil in Tala Valley (Natal) was fumigated with different concentrations of dazomet (300, 400, 500 kg ha−1) (granular formulation), and metham sodium (500, 750, 1000 L ha−1) (liquid formulation). Half the treatments were covered with plastic sheets during... -
The response of Italian ryegrass to sodium, lime and potassium on an acidic Natal soil
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: A.D. Manson --- , Republic of South AfricaUnless corrected, soil acidity and K deficiency frequently limit growth of intensive temperate pastures on highly weathered soils in South Africa. A field trial, with Italian ryegrass (cv. Midmar), was established on a Himeville sandy clay loam (typic Hapludox) for... -
Comparative patterns of sodium accumulation in leaves of selected savanna species growing on sodic and nonsodic soils
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: CatherineL. Bailey --- Botany Department, South Africa MaryC. Scholes --- Botany Department, South AfricaPlants show differing mechanisms of tolerance to high sodium levels in soils. Physiological and biochemical mechanisms have been investigated for many crop species but little information is available for indigenous tree and grass species. Foliar concentrations of sodium, calcium, potassium,... -
Effects of sodium sulphate, sodium chloride and manganese sulphate on kikuyu (Pennisetum clandestinum) growth and ion uptake
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: A.J. Mills --- Department of Soil Science, South Africa M.V. Fey --- Department of Soil Science, South Africa C.E. Johnson --- Department of Civil and Environmental Engineering, USAIrrigation with saline water is increasingly practised yet an understanding of plant response to different salt types remains largely elusive. Our study investigated the effects of irrigation with simulated effluent containing three salts on the growth and composition of a... -
Efficacy of a single dose of a transdermal diclofenac patch as pre-emptive postoperative analgesia: a comparison with intramuscular diclofenac
Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: R Krishna --- Department of Anaesthesiology and Critical Care, India MS Nataraj --- Department of Anaesthesiology, IndiaBackground: We compared the analgesic efficacy of a transdermal diclofenac patch 100 mg (NuPatch® 100, Zydus Cadila, Ahmedabad, India) and intramuscular diclofenac sodium 75 mg (Voveran®, Novartis, India) for postoperative analgesia, and the associated side-effects of the transdermal diclofenac patch. -
Gouty arthritis: an approach for general practice
Item type: Journal Article • Journal: South African Family Practice • Authors: M Tikly --- Division of Rheumatology, K Makan --- Division of Rheumatology,Gout is a common crystal-induced inflammatory arthritis, the prevalence and clinical complexity of which is increasing in the face of a growing aged population with multiple co-morbidities. Recent epidemiological studies emphasise that lifestyle factors strongly influence the development of hyperuricaemia... -
Geology and groundwater regions to quantify primary salinity, sodicity and alkalinity in South African soils
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Johannes P Nell --- Agricultural Research Council–Institute for Soil, Climate and Water, South Africa Cornelius W van Huyssteen --- Department of Soil, Crop and Climate Science, South AfricaAlthough anthropogenic salinisation and sodification has been researched extensively, little is known about the primary salinity in South Africa. This paper therefore aimed to determine the primary salinity, sodicity and alkalinity conditions for South African soils, based on geological units... -
Understanding the combined effect of soil properties on gully erosion using quantile regression
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: George M van Zijl --- Department of Soil Science, South Africa Freddie Ellis --- Department of Soil Science, South Africa Andrei Rozanov --- Department of Soil Science, South AfricaThe individual effects of soil properties on soil erodibility are well understood. It is also known that various interactions between these properties exist, which creates the need for unique investigations into how soil properties influence soil stability. Quantile regression was... -
A review of renal protection strategies
Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: Erna Meyer --- Northland District Health Board, Whangarei Base Hospital, New ZealandGlobally, more than 10 million people are affected every year by acute kidney injury (AKI) and approximately 6% of hospital patients sustain some degree of kidney injury during their hospital event. Reducing perioperative kidney injury may significantly improve patient outcomes... -
Enteropathogens associated with the seasonal fuctuations in plasma sodium and potassium levels in childhood diarrhoea
Item type: Journal Article • Journal: Southern African Journal of Epidemiology and Infection • Authors: V Pillay-van Wyk --- Burden of Disease Research Unit, G Swingler --- School of Child and Adolescent Health,This paper aims to assess the clinical, nutritional, microbiological, environmental and socio-economic determinants that have a seasonal distribution, or are potential confounders of a seasonal association of previously described seasonal fuctuations in plasma sodium and potassium concentrations in children with... -
COLISTIN: adult and paediatric guideline for South Africa, 2016
Item type: Journal Article • Journal: Southern African Journal of Infectious Diseases • Authors: Quinten Labuschagne --- South African Society of Clinical Pharmacy (SASOCP), South Africa Natalie Schellack --- South African Society of Clinical Pharmacy (SASOCP), South Africa Andries Gous --- South African Society of Clinical Pharmacy (SASOCP), South Africa Elmien Bronkhorst --- South African Society of Clinical Pharmacy (SASOCP), South Africa Gustav Schellack --- South African Society of Clinical Pharmacy (SASOCP), South Africa Lindie van Tonder --- South African Society of Clinical Pharmacy (SASOCP), South Africa Archele Truter --- South African Society of Clinical Pharmacy (SASOCP), South Africa Caroline Smith --- South African Society of Clinical Pharmacy (SASOCP), South Africa Ruth Lancaster --- South African Society of Clinical Pharmacy (SASOCP), South Africa Sonya Kolman --- South African Society of Clinical Pharmacy (SASOCP), South AfricaThis document was created to serve as a guideline for colistin prescribing in South Africa. Antimicrobial resistance is threatening the effective prevention and treatment of a wide variety of infections, especially those that are caused by multi-drug-resistant (MDR) gram-negative bacteria... -
Soil quality effects on regeneration of annual Medicago pastures in the Swartland of South Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Pieter A Swanepoel --- Department of Agronomy, South Africa Flackson Tshuma --- Department of Agronomy, South AfricaAnnual medic (Medicago spp.) pastures are widely used as the forage component of crop rotation systems in the Mediterranean region of South Africa. Reliable establishment of medics can be challenging. This may be related to poor soil quality, an inherent... -
More than eating dirt: a review of avian geophagy
Item type: Journal Article • Journal: African Zoology • Authors: Colleen T Downs --- School of Life Sciences, South Africa Ian P Bredin --- School of Life Sciences, South Africa Peter D Wragg --- School of Life Sciences, South AfricaGeophagy, the ingestion of earth varying in particle size from stones to soils rich in clay, is a relatively widespread behaviour across avian taxa. We reviewed its occurrence in birds and its hypothesised adaptive functions in birds. Of the ∼30... -
Impact of cold plasma-mediated treatment on coated and packaged ‘Monterey’ strawberries during cold storage
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Zinash A Belay --- , South Africa Nandi E Nyamende --- , South Africa Oluwafemi James Caleb --- , South AfricaCold plasma technology has been used within the food industry for surface decontamination. Therefore, this study investigated the efficacy of low-pressure cold plasma (CP) treatment to decontaminate sodium alginate-coated and packaged ‘Monterey’ strawberries. Cold plasma treatment was carried out at... -
The chemistry of the pedoderm – part 2: Dichrostachys cinerea patches and adjacent grassland in the southern Kruger National Park, South Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Anthony J Mills --- , South Africa Tercia Strydom --- , South Africa Jessica L Allen --- , South AfricaThe small tree, Dichrostachys cinerea, occurs in dense patches within grasslands on gabbro-derived soils in the southern Kruger National Park. It is not known whether soil properties in the grasslands affect tree establishment. As a first step in identifying soil... -
Key role-players’ perceptions of the current salt legislation in South Africa: opportunities and challenges
Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Marzanne van Loggerenberg --- Stellenbosch University, South Africa Bianca van der Westhuizen --- University of South Africa, South Africa Nelene Koen --- Stellenbosch University, South Africa -
12. “Use salt and foods high in salt sparingly”: a food-based dietary guideline for South Africa
Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Wentzel-Viljoen E [cor1] Steyn K --- Chronic Disease Initiative for Africa, Department of Medicine, University of Cape Town, Ketterer E --- Heart and Stroke Foundation South Africa, Charlton KE --- School of Health Sciences, Faculty of Health and Behavioural Sciences, University of Wollongong, AustraliaIncreased salt intake leads to an increase in blood pressure and decreased sodium intake relative to the usual or increased intake results in lowered blood pressure in adults, with or without hypertension. Blood pressure is a strong proxy indicator for...