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Prospects of eucalypt species, including interspecific hybrids from South Africa, for hardwood plantations in marginal subtropical environments in Queensland, Australia
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: D J Lee --- , D G Nikles --- , G R Dickinson --- ,In Australia, there has been rapid expansion in recent years of commercial plantations of hardwood timber species, especially of Eucalyptus and Corymbia. In tropical and sub-tropical Queensland the land most likely to be readily available for this planting is in... -
Future outlook for Pinus patula in South Africa in the presence of the pitch canker fungus (Fusarium circinatum)
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: RG Mitchell --- , South Africa TA Coutinho --- Forestry and Agricultural Biotechnology Institute, South Africa E Steenkamp --- Forestry and Agricultural Biotechnology Institute, South Africa M Herbert --- , South Africa MJ Wingfield --- Forestry and Agricultural Biotechnology Institute, South AfricaApproximately 50% of the area planted to softwood trees in South Africa has been established with Pinus patula, making it the most important pine species in the country. More effort has gone into developing this species for improved growth, tree... -
Do dwarf chameleons (Bradypodion) show developmental plasticity?
Item type: Journal Article • Journal: African Zoology • Authors: Ashadee K. Miller --- School of Animal, Plant and Environmental Sciences, University of the Witwatersrand, South Africa Graham J. Alexander --- School of Animal, Plant and Environmental Sciences, University of the Witwatersrand, South AfricaDevelopmental plasticity results from environmental influences on the phenotype of an organism during its development, and its effects are irreversible. The phenomenon of phenotype–genotype uncoupling (plasticity) causes problems in species delineations, and has been suggested as a cause underlying a... -
Accounting for futures and options in terms of IASC proposals: practitioners’ views in South Africa
Item type: Journal Article • Journal: South African Journal of Accounting Research • Authors: S Baker --- South African Breweries, G K Everingham --- Department of Accounting,This paper outlines the development and nature of the International Accounting Standards Committee’s proposals in relation to financial instruments. It considers the applicability of the specific principles therein in relation to accounting for futures and options traded on the South... -
Basic Financial Statements: Objectives, Categories, Principles and Presentation
Item type: Journal Article • Journal: De Ratione • Authors: J.A. Miller --- University of Natal,Objectives ae suggested for each of the basic financial statements in the annual report of a business entity. Categories of information required and the principles used in their classification, are identified and defined. A suggested presentation reflects cash flow alongside... -
Investigating the environmental adaptability of promising subtropical and cold-tolerant eucalypt species in the warm temperate climate zone of KwaZulu-Natal, South Africa
Item type: Journal Article • Journal: Southern Hemisphere Forestry Journal • Authors: RAW GardnerDuring 2001, a series of four site-species interaction trials was established by the ICFR (Institute for Commercial Forestry Research) in the warm temperate climate zone of KwaZulu-Natal, South Africa (mean annual temperature (MAT) range 16–19°C), to investigate the relative growth... -
Alternative eucalypts for commercial pulpwood production at moderately dry sites in the warm temperate zone of KwaZulu-Natal, South Africa
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Robin AW Gardner --- Institute for Commercial Forestry Research, South Africa Keith M Little --- School of Natural Resource Management, Nelson Mandela Metropolitan University, South Africa Arnulf Kanzler --- Sappi Forest Research, South Africa Thimagren N Naidoo --- Sappi Forest Research, South AfricaDuring 2001, a series of four site–taxa interaction trials was established in the warm temperate (mean annual temperature range 16–19 °C) forestry climatic zone of KwaZulu-Natal (KZN), South Africa. The main objective was to investigate the commercial forestry potential of... -
Adoption of maize varieties on smallholder farmers’ market participation in Oromia Regional State, Ethiopia
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Abadi Teferi Alemaw --- , Ethiopia Alem Mezgebo Hailu --- , Ethiopia Shishay Teklay Kahsay --- , EthiopiaAgricultural technologies have been introduced to Ethiopia. Farmers adopt such technologies for bettering their livelihoods by increasing farm production. However, increasing production by itself may not necessarily enhance farmers’ livelihoods. Among other factors that can result in enhanced livelihoods, farmers... -
Adoption and impacts of improved beehive technologies in the miombo woodland of Tanzania
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Nicholaus Musimu Kuboja --- , Tanzania A.C. Isinika --- , Tanzania F.T.M. Kilima --- , TanzaniaThis paper analyzes the adoption and impacts of improved beehives on households’ income using cross-sectional data sourced from a sample of 198 beekeepers in western Tanzania who adopted improved beehives. Propensity score matching and the endogenous switching regression model are... -
To honk or to hiss: uncovering call complexity in the Egyptian Goose Alopochen aegyptiaca
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Tess Gridley --- , South Africa Courtney EC Gardiner --- , South AfricaEgyptian Geese Alopochen aegyptiaca are distributed across most of Africa. Their calls dominate the soundscape of many urban areas, yet their acoustic behaviour is poorly documented or understood. Using acoustic recordings made across a range of behavioural contexts, groups sizes... -
Households’ nonfarm livelihood participation and agricultural inputs investment: Evidence from northern Ethiopia
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Haile Tewele Berhe --- , EthiopiaEvidence shows that nonfarm livelihood activities are an important source of income for rural households and they may interact with farm activities in different ways. This article attempts to examine the investment linkage in which evidence is scarce in the... -
Impact of the adoption of technological innovation on the credit acquisition of rice farmers in Senegal: A propensity score matching technique
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Philomena Chioma-Akalugo Ogwuike --- , Nigeria Clinton Obinna Ogwuike --- , Nigeria Aminou Arouna --- , Cote d’IvoireThis paper examines whether the adoption of the ASI thresher technology by rice farmers in the Senegal River Valley increases their access to credit and their creditworthiness through various pathways. Mainly, this study seeks to verify the argument that the... -
Extension services in Ethiopia: First adoption of chemical fertilizers in rural villages
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Alexander Jordan --- Thuringian Ministry for Economic Affairs, Germany Marco Guerzoni --- University of Milan-Bicocca, ItalyIn this paper we evaluate the efficiency of extension programmes in the adoption of chemical fertilizers in Ethiopia between 1994 and 2004 using matching techniques in a quasi-experimental setting. In addition to common factors, measures of culture, proxied by ethnicity... -
Changing use of species and hybrids in South African forest plantations
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Andrew R Morris --- Institute for Commercial Forestry Research, South AfricaSouth Africa has 1.2 million hectares of plantations developed progressively through the 20th century. These occur from 23° to 34°S, from near sea level to 2 000 m above sea level and in both Mediterranean winter rainfall and summer subtropical... -
Le conseil post-test encourage-t-il les PVVIH à partager leur statut sérologique? Pratiques et suggestions des conseillers au Burkina Faso
Does post-test counseling support PLHIV in disclosing their HIV status? Practices and propositions by counselors in Burkina Faso Item type: Journal Article • Journal: SAHARA-J: Journal of Social Aspects of HIV/AIDS • Authors: Odette Ky-Zerbo [d309e18] Jean-François Somé Fodé SimagaDisclosure of HIV test results is discussed during post-test counseling, following norms. However, while barriers to disclosing a positive HIV result have been documented, the literature is sparse on the way guidelines are applied in the field. The aim of... -
On total domination and minimum maximal matchings in graphs
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Selim Bahadır --- Ankara Yıldırım Beyazıt University, TurkeyA subset M of the edges of a graph G is a matching if no two edges in M are incident. A maximal matching is a matching that is not contained in a larger matching. A subset S of vertices... -
A sufficient condition for planar graphs to be DP-4-colorable
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Ziwen Huang --- Yichun University, China Jianqing Ma --- Wuhan University of Science and Technology, China Xiaoxia Zhang --- Xinyang Normal University, ChinaIn 2017, Dvořák and Postle introduced DP-coloring (known as correspondence coloring) as a generalization of list coloring. Recently, a lot of attention has been put on sufficient conditions for planar graphs to be DP-4-colorable. Liu et al. [17] proved that... -
Impact of adopting the climate-smart crop varieties on food security in southwestern Ethiopia
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Dubale Abate --- Injibara University, Ethiopia Henoke Tesfaye --- Wolkite University, Ethiopia Metadel Kassaw --- Wolkite University, Ethiopia Yonnas Addis --- Wolkite University, Ethiopia Habtamu Mossie --- Injibara University, EthiopiaClimate-smart crop varieties (CSV) are vital in improving food security by enhancing productivity while reducing problems of climate change. However, there is a low adoption of these varieties by the farmers in the study area due to lack of awareness... -
Impact of income diversification on rural household food security in Ethiopia
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Girma Gezimu Gebre --- Hawassa University, Ethiopia Aneteneh Ashebir --- Hawassa University, Ethiopia Tibebu Legesse --- Hawassa University, EthiopiaUsing primary data collected from 462 farm households, this paper aims to examine the impact of income diversification on rural household food security in Ethiopia. A propensity score matching model was employed to analyze the impact of participation in both... -
Does participation in innovation platform improve welfare? Insights from smallholder maize farmers in Ghana
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Eric Asiamah Yeboah --- , Ghana Kelvin Balcombe --- University of Reading, UK Bright Owusu Asante --- Kwame Nkrumah University of Science and Technology (KNUST), Ghana Stephen Prah --- Kwame Nkrumah University of Science and Technology (KNUST), Ghana Robert Aidoo --- Kwame Nkrumah University of Science and Technology (KNUST), GhanaThis paper investigates the impact of participation in innovation platforms (IPs) on smallholder maize farmers’ welfare in the Brong Ahafo region of Ghana using data collected from 477 rural farm households. We employed the doubly robust inverse probability weighted regression... -
Spillover effects of tree-planting programmes on household tree planting for fuelwood and livelihoods in non-urban areas of Tanzania
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Yusuph John Kulindwa --- Moshi Co-operative University, TanzaniaA spillover effect of tree planting programmes (TPs) and of the independent planting of trees for fuelwood by forest-dependent households is that deforested areas in developing countries have not been restored due to the high demand for fuelwood, which outstrips... -
Silvicultural management strategies for climate change mitigation with the focus on plantation forests
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Ben du Toit --- Stellenbosch University, South AfricaThis technical note explores several practical actions whereby short-rotation plantation forests in warm climates can be managed for increased resilience in the face of climate change. It includes landscape level issues such as ecosystem resilience, limiting the invasive tendencies of...
