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Identification of companion legumes for midmar Italian ryegrass
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: H.R.H. Smith --- Department of Agriculture (Transvaal Region),In a preliminary investigation seven legumes were planted alone and in combination with Lolium multiflorum cv. Midmar. The pure stands of legumes were harvested at either four, five or six week cutting intervals, while the pure stands of Lolium multiflorum... -
Identification of companion small grains for midmar Italian ryegrass
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: H.R.H. Smith --- , C.P. Dempsy --- Department of Agriculture (Transvaal Region), M. Schaffner --- Department of Agriculture (Transvaal Region),In a preliminary investigation four small grain species, oats (Avena sativa), rye (Secalae cereale), wheat (Triticum aestivum) and triticale (Triticum × secalae) were planted alone and in combination with Lolium multiflorum cv Midmar under irrigation. The dry matter (DM) yield... -
Patterns of defoliation in four‐ and eight‐paddock grazing systems
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: D.M. Gammon --- Department of Agriculture and Water Supply, Republic of South Africa D.R. Twiddy --- Department of Agriculture and Water Supply, Republic of South AfricaPatterns of defoliation of the dominant palatable species in a recommended eight‐paddock system and a four‐paddock system with the same grazing cycle were monitored by repeated observations of marked tillers. In the two systems, the percentages of palatable species grazed... -
The yield response of annual ryegrass (Lolium multiflorum) to varying nitrogen fertilizer application strategies
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: R.J. Eckard --- , Republic of South Africa P.E. Bartholomew --- , Republic of South Africa N.M. Tainton --- Department of Grassland Science, Republic of South AfricaAnnual ryegrass (Lolium multiflorum LAM. cv. Midmar) pastures were established on three sites, representing the Avalon, Katspruit and Inanda soil forms, with cut-plot experimentation over a period of four years (1987 - 1990). Nitrogen fertilizer was top-dressed at 0, 200,... -
Dedekind Order Completion of C (X) by Hausdorff Continuous Functions
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: R. AnguelovThe concept of Hausdorff continuous interval valued functions, developed within the theory of Hausdorff approximations and originaly defined for interval valued functions of one real variable is extended to interval valued functions defined on a topological space X. The main... -
When is every Hausdorff continuous interval-valued function bounded by continuous functions?
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Nicolae Dâneţ --- , RomaniaIn this paper we characterize the topological spaces X for which ℍ ft (X) = ℍ cm (X). Here ℍ ft (X) is the set of all finite Hausdorff continuous interval-valued functions on X and ℍ cm (X) is the... -
Home range and diving behaviour of Heaviside's dolphins monitored by satellite off the west coast of South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: RW Davis --- Department of Marine Biology, USA JHM David --- Branch: Oceans and Coasts, Department of Environmental Affairs, South Africa MA Meÿer --- Branch: Oceans and Coasts, Department of Environmental Affairs, South Africa K Sekiguchi --- International Christian University, Japan PB Best --- Mammal Research Institute, South Africa M Dassis --- Instituto de Investigaciones Marinas y Costeras, Facultad de Ciencias Exactas y Naturales, Argentina DH Rodríguez --- Instituto de Investigaciones Marinas y Costeras, Facultad de Ciencias Exactas y Naturales, ArgentinaThree Heaviside's dolphins Cephalorhynchus heavisidii were fitted with satellite depth recorders off the west coast of South Africa during February–April 1997 and monitored for 51, 73 and 130 days, respectively. In total, 345 locations were received from the three animals,... -
The management of epithelial ovarian cancer: neoadjuvant chemotherapy and interval surgery
Item type: Journal Article • Journal: Southern African Journal of Gynaecological Oncology • Authors: D G Allen --- Mercy Hospital for Women, Australia -
Population status of black and white colobus monkeys (Colobus guereza) in Kakamega Forest, Kenya: are they really on the decline?
Item type: Journal Article • Journal: African Zoology • Authors: Peter J. Fashing --- Department of Ecology, Evolution, and Environmental Biology, U.S.AEastern black and white colobus monkeys, or guerezas (Colobus guereza), are among the few primate species that have traditionally been regarded as not being adversely affected by habitat degradation. This view was recently challenged by von Hippel et al. (2000)... -
Reproductive biology of a pride of lions on Karongwe Game Reserve, South Africa
Item type: Journal Article • Journal: African Zoology • Authors: Monika B. Lehmann --- Department of Nature Conservation, South Africa Paul J. Funston --- Department of Nature Conservation, South Africa Cailey R. Owen --- K.e.r.i. Research, Ecological Institute of Research, South Africa Rob Slotow --- School of Biological and Conservation Sciences, South AfricaThe reproductive biology of a pride of lions (Panthera leo) was studied on the 8500 ha Karongwe Game Reserve from 1999 to 2005. Over this period, the pride consisted of between four and 11 lions with a paired coalition of... -
Season, sex and age variation in the haematology and body condition of geometric tortoises Psammobates geometricus
Item type: Journal Article • Journal: African Zoology • Authors: Margaretha D Hofmeyr --- Chelonian Biodiversity and Conservation – Southern Africa, Biodiversity and Conservation Biology Department, South Africa Brian T Henen --- Chelonian Biodiversity and Conservation – Southern Africa, Biodiversity and Conservation Biology Department, South Africa Shasheen Walton --- Chelonian Biodiversity and Conservation – Southern Africa, Biodiversity and Conservation Biology Department, South AfricaBody condition and haematological indices provide powerful information when assessing wildlife health. Reference intervals for these indices can facilitate wildlife management, and would benefit initiatives to save the Critically Endangered geometric tortoise (Psammobates geometricus). We collected data from 126 geometric... -
The effect of fire history on soil nutrients and soil organic carbon in a semi-arid savanna woodland, central Namibia
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Elise Nghalipo --- Department of Agriculture and Natural Resources Sciences, Namibia Dave Joubert --- Department of Agriculture and Natural Resources Sciences, Namibia Heather Throop --- School of Earth and Space Exploration and School of Life Sciences, USA Alexander Groengroeft --- Institute of Soil Science, GermanyFire is an integral part of savanna ecosystems that has shaped these systems since the Miocene. Substantial uncertainty about fire effects in semi-arid ecosystems exists. Fire may affect ecosystem productivity directly through nutrient volatilisation, increased mineralisation and altering organic matter... -
The Effect of Provenance, Plant Spacing and Cutting Interval on Leaf Biomass Yield of Moringa Oleifera Lam.
Item type: Journal Article • Journal: East African Agricultural and Forestry Journal • Authors: C. T. Gadzirayi --- Bindura University of Science Education, Zimbabwe F. Kubiku --- Bindura University of Science Education, Zimbabwe J. Mupangwa --- University of Fort Hare, South Africa B. Masamha --- Bindura University of Science Education, Zimbabwe L. Mujuru --- Bindura University of Science Education, ZimbabweTwo provenances of Moringa oleifera Lam., Malawi and Mutoko, were evaluated to determine the effect of plant spacing and cutting interval on the leaf biomass yield for fodder production. A split-split plot experimental design was set up with provenance as... -
Fire and the persistence, decline and extirpation of Protea roupelliae subsp. roupelliae trees in a montane grassland
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: François R Smith --- , South Africa Timothy G O’Connor --- , South Africa James E Granger --- , South Africa Angela J Beaumont --- , South AfricaWe investigated long-term changes, from 1979 to 2015, in the abundance of Protea roupelliae subsp. roupelliae trees growing in a montane grassland of the uKhahlamba-Drakensberg mountains. The study involved counting the numbers of adults and juveniles (saplings and seedlings) in... -
The utility of serial prolactin sampling in healthy adult volunteers
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: Reinhardt Dreyer --- , South Africa Amanda Beukes --- , South Africa Mariza Hoffmann --- , South Africa Wessel Meyer --- , South Africa Ankia Coetzee --- , South AfricaBackground: Stress hyperprolactinemia is a common cause of elevated prolactin (PRL) and often leads to additional investigation and radiation exposure. The results of PRL serial sampling in healthy adult volunteers to determine the utility of delayed collection are reported. -
A photo-identification-based assessment model of southern right whales Eubalaena australis surveyed in South African waters, with a focus on recent low counts of mothers with calves
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: A Brandão --- University of Cape Town, South Africa A Ross-Gillespie --- University of Cape Town, South Africa E Vermeulen --- University of Pretoria, South Africa DS Butterworth --- University of Cape Town, South AfricaPhoto-identification data for southern right whale cow–calf pairs on the South African calving grounds provide one of the longest abundance time-series for any whale population worldwide. Following a very steady increase from a heavily depleted state, surveys since 2015 reflect... -
Global bifurcation from zero in nonlinear Sturm-Liouville equation with a spectral parameter in the boundary condition
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Ziyatkhan S. Aliyev --- Baku State University, Azerbaijan Nurida A. Ismayilova --- , AzerbaijanIn this paper, we consider the nonlinear Sturm-Liouville problem with a spectral parameter in the boundary condition. We show the existence of two families of unbounded continua of nontrivial solutions of this problem corresponding to the nodal properties that having...