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Rol van tekorte aan sekere makro-elemente by verdraagsaamheid van mielies (Zea mays L.) teenoor atrasien
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: C.F. Reinhardt --- Departement Plantproduksie, P.C. Nel --- Departement Plantproduksie, N. M.J. Vermeulen --- Departement Biochemie, Z. Apostolides --- Departement Biochemie, D. J.J. Potgieter --- Departement Biochemie,Die verdraagsaamheid van mieliesaailinge (Zea mays L. kv SSM2041) teenoor atrasien is in 'n glashuis ondersoek. Plante is in potte gekweek, in voedingsoplossings met tekorte aan sekere makro-elemente. Atrasien in die voedingsoplossings is periodiek bepaal met behulp van hoëdrukvloeistofchromatografie. Tekorte... -
Seasonal uptake and distribution of nutrient elements by kiwifruit vines 1. Macronutrients
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: W. A.G. Kotzé --- , Republic of South Africa Johanna de Villiers --- , Republic of South AfricaDry matter production and uptake and distribution of macronutrients in kiwifruit vines (Actinidia deliciosa (A. Chev.) C.F. Liang et A.R. Ferguson var. deliciosa) cv. Hayward were studied in sand culture. The total dry mass of the kiwifruit vine increased sharply... -
Nutrient inflow to the roots of irrigated wheat throughout the growing season under semi-arid climatic conditions
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: C.C. du Preez --- Department of Soil Science, Republic of South Africa A. T.P. Bennie --- Department of Soil Science, Republic of South AfricaThe objective of this study was to obtain information on the inflow of N, P, K, Ca, Mg, S, Cu, Fe, Mn and Zn to the roots of wheat (Triticum aestivum L.) grown under normal irrigation farming conditions. Except for... -
Nutritional evaluation of Ficus thonningii Blume leaves as ruminant livestock feed in the Ahferom district of Tigray, Ethiopia
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Daniel H Berhe --- Axum Agricultural Research Centre, Ethiopia Agena A Tanga --- Plant Science, EthiopiaWe evaluated the fodder quality of Ficus thonningii Blume in the Ahferom district of Tigray, Ethiopia. Determination of foliar macronutrients and proximate chemical compositions was undertaken using five diameter classes (11–20, 21–30, 31–40, 41–50 and 51–60 cm at breast height)... -
Microalgal responses to physico-chemical variability in the small temporarily open/closed Seteni Estuary, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: NK Carrasco --- School of Life Sciences, South Africa R Perissinotto --- School of Life Sciences, South AfricaThe Seteni Estuary is a small temporarily open/closed estuary (TOCE) in South Africa under the influence of agricultural practices. While the general significance of microalgae to estuarine production is widely recognised, the factors regulating microalgal biomass in these heterogeneous systems... -
The nutrient intake of children aged 12–36 months living in two communities in the Breede Valley, Western Cape province, South Africa
Item type: Journal Article • Journal: South African Family Practice • Authors: TA Balogun --- Division of Community Health, South Africa MJ Lombard --- Division of Human Nutrition, South Africa M McLachlan --- Division of Human Nutrition, South AfricaObjective: The objective of this study was to describe the current macro- and micronutrient intake of children (both boys and girls) in two selected communities in the Breede Valley, Worcester. -
Effect of phosphorus and nitrogen sources on essential nutrient concentration and uptake by maize (Zea mays L.) during early growth and development
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Pieter-Ernst Coetzee --- Department of Soil, Crop and Climate Sciences, South Africa Gert M Ceronio --- Department of Soil, Crop and Climate Sciences, South Africa Chris C du Preez --- Department of Soil, Crop and Climate Sciences, South AfricaIn South Africa, maize is often produced on highly weathered soils with low organic matter contents. These soils are unable to supply sufficient nitrogen (N) and phosphorus (P) for sustainable maize production, resulting in the use of fertiliser sources containing... -
The influence of phosphorus and calcium application rates on the mineral composition of the perennial legume Macrotyloma axillare
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Karina Batista --- Instituto de Zootecnia, Brazil Luciana Gerdes --- Instituto de Zootecnia, Brazil Alessandra Aparecida Giacomini --- Instituto de Zootecnia, Brazil Waldssimiler Teixeira de Mattos --- Instituto de Zootecnia, Brazil Ivani Pozar Otsuk --- Instituto de Zootecnia, BrazilThe response of legumes to the supply of either phosphorus (P) or calcium (Ca) alone has been extensively investigated but no prior studies have evaluated their combinations in the perennial legume Macrotyloma axillare (Macrotyloma legume). This study assessed the mineral... -
Preliminary observations suggest Common Myna prefer lipid over protein and carbohydrate foods in a pairwise choice experiment
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: S Thobeka Gumede --- DST-NRF Centre for Invasion Biology, South Africa Colleen T Downs --- DST-NRF Centre for Invasion Biology, South AfricaCommon Mynas Sturnus tristis, previously known as Acridotheres tristis, are considered among the world’s worst most invasive species. However, relatively little is known about the factors that affect their persistence and spread in new environments. They have been observed feeding... -
Dietary intake as a cardiovascular risk factor: a cross-sectional study of bank employees in Accra
Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Ivy Priscilla Frimpong --- Diet Therapy Department, 37 Military Hospital, Ghana Matilda Asante --- Department of Nutrition and Dietetics, School of Biomedical and Allied Health Sciences, Ghana Aloysius Nwabugo Maduforo --- Department of Nutrition and Dietetics, NigeriaObjectives: To determine the dietary and nutrient intakes of bank employees in Accra in relation to recommended dietary intake for the control of cardiovascular diseases (CVD).