G F Ortmann
Biographic Data
| ID | 6196815 |
|---|---|
| NAME | G F Ortmann |
| GIVEN NAMES | G F |
| FAMILY NAME | Ortmann |
| SIGNATURE | ORTMANN G F |
| AFFILIATIONS | University of KwaZulu-Natal |
| ORCID | 0000-0001-9644-7277 |
| VERIFIED | Yes |
| TOTAL WORKS | 12 |
| TOTAL CITATIONS | 11 |
| WORKS AS AUTHOR | 12 |
| WORKS AS EDITOR | 0 |
| FIRST PUBLICATION YEAR | 2009 |
| LATEST PUBLICATION YEAR | 2021 |
| H-INDEX | 2 |
Structure and entry barriers to access groundnut markets for intermediary traders in central and northern Malawi
Traders that participate in more competitive market structures earn relatively little marketing margins than those that participate in less competitive ones. For better returns, commodity producers have to transact in competitive market structures. Therefore, understanding market structures and market entry barriers are essential to inform policy. The study's objectives were to examine forms of market structure and investigate entry barriers into…
Diffusion and adoption of Integrated Striga Management (ISM) technologies among smallholder maize farmers in rural northern Nigeria
Assessing agricultural land-use change in the Midlands region of KwaZulu-Natal, South Africa
The effect of major income sources on rural household food (in)security
The aim of this article was to investigate the food (in)security effect of household income generated from major economic activities in rural Swaziland. From a sample of 979 households, the results of a multinomial treatment regression model indicated that gender of household head, labor endowment, education, size of arable land, and location significantly influenced the households' choice of primary economic activity. Further results suggested t…
Collective action in small-scale mushroom production in Swaziland
While substantial literature is available on the determinants of small-scale farmers’ participation in collective action, and the welfare impacts of producing and/or marketing collectively, studies on the likely implications of organisational form on producers’ collective behaviour remain scant. This article attempts to address this knowledge gap by using an example of different forms of small-scale mushroom-producing groups in Swaziland. Given t…
Some Aspects of Agricultural Vulnerability to Climate Change in the KwaZulu-Natal Midlands, South Africa
The present study uses a systematic review method to document the extent of agricultural vulnerability to climate change (CC) in the midlands region of KwaZulu-Natal, South Africa. With regard to exposure, the CC detection literature suggests that the region is a hotspot of CC, and most climate model projections show warming and wetting trends towards the end of the 21st century. The sensitivity of farming systems is high due to high population d…
The Role of Capital Assets and Institutions in the Success and Failure of Smallholder Irrigation Schemes in South Africa
Production among smallholder irrigation farmers in South Africa is low, and is negatively influenced by a wide range of factors. This paper documents the findings of a study of two smallholder irrigation schemes inSouth Africa, by applying the sustainable livelihoods framework to identify factors affecting their performance.The two schemes, namely the Foundation Community Project and the Mooi River Irrigation Scheme wereexamined in terms of the f…
Consumers' Willingness-To-Pay for Underutilized Vegetable Crops
The paper aimed to determine consumer's willingness-to-pay for African leafy vegetables and to explore the socio-economic and perception factors influencing willingness-to-pay for African leafy vegetables in the Limpopo Province of South Africa. Cross-sectional data were collected from 300 randomly selected households across three districts of the Limpopo Province using a contingent valuation questionnaire. The descriptive results revealed that a…
Factors influencing the use of alternative land cultivation technologies in Swaziland
Extraction of non-timber forest products as a coping strategy for HIV/Aids-afflicted rural households in south-eastern Zimbabwe
This article examines the role of the extraction of non-timber forest products (NTFPs) as a coping strategy in response to HIV/AIDS-related economic shocks among rural households in the semi-arid Sengwe communal lands in south-eastern Zimbabwe. Using panel data for 200 households in 2008 and 2009, an econometric analysis revealed NTFP extraction as an important ex-post coping mechanism for the HIV/AIDS-afflicted households. Many of the households…
Management of non-timber forestry products extraction
KwaZulu-Natal commercial farmers' perceptions of and management responses to HIV/Aids
This study examines commercial farmers' perceptions of and management responses to the HIV epidemic, among a sample in KwaZulu-Natal Province in South Africa. The analysis is based on responses to a postal survey of commercial farmers belonging to KwaZulu-Natal Agricultural Union (Kwanalu), in April-May 2007. The findings show that, on average, the Kwanalu members were highly concerned about the impacts of HIV and AIDS on their businesses. The ma…
Collective action in small-scale mushroom production in Swaziland
While substantial literature is available on the determinants of small-scale farmers’ participation in collective action, and the welfare impacts of producing and/or marketing collectively, studies on the likely implications of organisational form on producers’ collective behaviour remain scant. This article attempts to address this knowledge gap by using an example of different forms of small-scale mushroom-producing groups in Swaziland. Given t…
Diffusion and adoption of Integrated Striga Management (ISM) technologies among smallholder maize farmers in rural northern Nigeria
Factors influencing the use of alternative land cultivation technologies in Swaziland
KwaZulu-Natal commercial farmers' perceptions of and management responses to HIV/Aids
This study examines commercial farmers' perceptions of and management responses to the HIV epidemic, among a sample in KwaZulu-Natal Province in South Africa. The analysis is based on responses to a postal survey of commercial farmers belonging to KwaZulu-Natal Agricultural Union (Kwanalu), in April-May 2007. The findings show that, on average, the Kwanalu members were highly concerned about the impacts of HIV and AIDS on their businesses. The ma…
Extraction of non-timber forest products as a coping strategy for HIV/Aids-afflicted rural households in south-eastern Zimbabwe
This article examines the role of the extraction of non-timber forest products (NTFPs) as a coping strategy in response to HIV/AIDS-related economic shocks among rural households in the semi-arid Sengwe communal lands in south-eastern Zimbabwe. Using panel data for 200 households in 2008 and 2009, an econometric analysis revealed NTFP extraction as an important ex-post coping mechanism for the HIV/AIDS-afflicted households. Many of the households…
Management of non-timber forestry products extraction
Factors influencing the use of alternative land cultivation technologies in Swaziland
Some Aspects of Agricultural Vulnerability to Climate Change in the KwaZulu-Natal Midlands, South Africa
The present study uses a systematic review method to document the extent of agricultural vulnerability to climate change (CC) in the midlands region of KwaZulu-Natal, South Africa. With regard to exposure, the CC detection literature suggests that the region is a hotspot of CC, and most climate model projections show warming and wetting trends towards the end of the 21st century. The sensitivity of farming systems is high due to high population d…
The Role of Capital Assets and Institutions in the Success and Failure of Smallholder Irrigation Schemes in South Africa
Production among smallholder irrigation farmers in South Africa is low, and is negatively influenced by a wide range of factors. This paper documents the findings of a study of two smallholder irrigation schemes inSouth Africa, by applying the sustainable livelihoods framework to identify factors affecting their performance.The two schemes, namely the Foundation Community Project and the Mooi River Irrigation Scheme wereexamined in terms of the f…
Consumers' Willingness-To-Pay for Underutilized Vegetable Crops
The paper aimed to determine consumer's willingness-to-pay for African leafy vegetables and to explore the socio-economic and perception factors influencing willingness-to-pay for African leafy vegetables in the Limpopo Province of South Africa. Cross-sectional data were collected from 300 randomly selected households across three districts of the Limpopo Province using a contingent valuation questionnaire. The descriptive results revealed that a…
Collective action in small-scale mushroom production in Swaziland
While substantial literature is available on the determinants of small-scale farmers’ participation in collective action, and the welfare impacts of producing and/or marketing collectively, studies on the likely implications of organisational form on producers’ collective behaviour remain scant. This article attempts to address this knowledge gap by using an example of different forms of small-scale mushroom-producing groups in Swaziland. Given t…
Assessing agricultural land-use change in the Midlands region of KwaZulu-Natal, South Africa
The effect of major income sources on rural household food (in)security
The aim of this article was to investigate the food (in)security effect of household income generated from major economic activities in rural Swaziland. From a sample of 979 households, the results of a multinomial treatment regression model indicated that gender of household head, labor endowment, education, size of arable land, and location significantly influenced the households' choice of primary economic activity. Further results suggested t…
Diffusion and adoption of Integrated Striga Management (ISM) technologies among smallholder maize farmers in rural northern Nigeria
Structure and entry barriers to access groundnut markets for intermediary traders in central and northern Malawi
Traders that participate in more competitive market structures earn relatively little marketing margins than those that participate in less competitive ones. For better returns, commodity producers have to transact in competitive market structures. Therefore, understanding market structures and market entry barriers are essential to inform policy. The study's objectives were to examine forms of market structure and investigate entry barriers into…
Economics (12 works) · Business (11 works) · Geography (11 works) · Agriculture (8 works) · Agricultural economics (6 works) · Agricultural Innovations and Practices (6 works) · Economic growth (5 works) · Natural resource economics (5 works) · Ecology (4 works) · Food security (4 works)