Rashid M. Hassan

Climate change and agriculture in Africa : impact assessment and adaptation strategies

Foreword * Introduction and Rationale * Study Objectives, Structure, Methodology, Organization and Countries Agroclimatic Conditions * Methods and Models Developed and Used in the Study * Results of the Country Analyses * Results of the Regional Analyses * Summary, Conclusions and Policy Implications * Index

A Ricardian Analysis of the Distribution of Climate Change Impacts on Agriculture Across Agro-Ecological Zones in Africa

This paper examines the distribution of climate change impacts across the six- teen Agro-Ecological Zones (AEZs) of Africa. We combine net revenue from livestock and

Nature: the many benefits of ecosystem services.

Back to nature?In aCommentary in Nature last month, Douglas J. McCauley argued that with little evidence to show that market-based conservation works, the time was ripe for a return to the protection of nature for natures sake. Predictably this has provoked comment, and in Correspondence this week, the issues are aired.

Determinants of adoption and intensity of use of improved maize varieties in the Central Highlands of Ethiopia: A Tobit analysis

This study employed a Tobit model to examine factors that influence the adoption and intensity of utilisation of improved maize varieties in the West Shoa Zone in the central highlands of Ethiopia. The estimated results indicate that level of education, household labour, farm size, extension services, farm income, and timely availability of improved maize seeds significantly influence the adoption and intensity of use of improved maize. It also showed that the impact of off-farm income and age of the household head on adoption and intensity of use of improved maize seed was insignificant.

Determinants of fertilizer use on maize in Eastern Ethiopia: A weighted endogenous sampling analysis of the extent and intensity of adoption

Abstract Factors influencing the extent and intensity of fertilizer adoption on maize production in Ethiopia were analyzed. A Weighted Endogenous Sampling Maximum Likelihood estimator was used in the specification of a Probit and Tobit fertilizer adoption models. The results have important implications for the formulation of policies and programs targeted to promotion of fertilizer use in small-scale maize production. Those include improved road infrastructure, consideration of weather related crop failure insurance programs, development of drought tolerant cultivars and targeting particular farmer groups.

Agricultural productivity and natural resource use in southern Africa

Abstract This paper examines the natural resource status of southern Africa and analyzes the critical linkages between the performance of southern African agriculture and natural resource use patterns. The implication of on-going natural resource use trends on poverty, food insecurity, and environmental degradation are also analyzed. The challenges that must be addressed including, how best to intensify agricultural production, the types of technologies to promote and the imperatives of production efficiency and intra-regional trade are examined. The paper concludes with some suggestions on how best to proceed in the future to be able to successfully address the challenges identified.

Measuring The Economic Impact Of Climate Change On African Agricultural Production Systems

This study measured the economic impacts of climate change on crop and livestock farming in Africa based on a cross-sectional survey of over 8000 farming households from 11 countries in east, west, north and southern Africa. The response of net revenue from crop and livestock agriculture across various farm types and systems in Africa to changes in climate normals (i.e. mean rainfall and temperature) is analysed. The analyses controlled for effects of key socioeconomic, technology, soil and hydrological factors influencing agricultural production. Results show that net farm revenues are in general negatively affected by warmer and drier climates. The small-scale mixed crop and livestock system predominantly typical in Africa is the most tolerant whereas specialized crop production is the most vulnerable to warming and lower rainfall. These results have important policy implications, especially for the suitability of the increasing tendency toward large-scale mono-cropping strategies for agricultural development in Africa and other parts of the developing world in light of expected climate changes. Mixed crop and livestock farming and irrigation offered better adaptation options for farmers against further warming and drying predicted under various future climate scenarios.

Improved measure of the contribution of cultivated forests to national income and wealth in South Africa

An environmental accounting approach is adopted to adjust current measures of national income and net savings in SA for the value of net accumulation in timber and carbon stocks as well as for the value of water abstraction externality of cultivated forests. Results indicated that the said values missing from current measures of income and capital formation are substantial, amounting to about 0.6 per cent of NNP, on average over the study period. Potential VAD lost to agriculture due to water abstraction by cultivated forests was estimated at R104 million per annum, on average since 1981. This estimate, however, did not account for the social costs associated with potential losses of environmental services from affected ecosystems.

Analysis of determinants of farm-level adaptation measures to climate change in Southern Africa

The study examines farmer adaptation strategies to climate change in Southern Africa based on a cross-section database of three countries (South Africa, Zambia and Zimbabwe). A multivariate discrete choice model was used to analyse the determinants of farm-level adaptation strategies. Results confirm that access to credit, free extension services, awareness of climate change are critical determinants of farm-level adaptation options. Policies aimed at easing identified key limits to farmers’ capacity to adapt to climate change need to emphasize the critical role of: extension services; provision of improved climate, production and market information as well as the means to implement adaptation through affordable credit and insurance against climate risks (safety nets). Key words: Climate change, farm-level adaptation, Southern Africa.

Economy-wide benefits from water-intensive industries in South Africa: Quasi-input-output analysis of the contribution of irrigation agriculture and cultivated plantations in the Crocodile River catchment

A quasi-input-output framework was employed to measure and compare economy-wide benefits from irrigated crops and cultivated plantations in the Crocodile River catchment. The results of the analysis showed that it makes a huge difference to consider not only direct economic benefits from water-using activities, but also their economy-wide benefits and multisector linkages for evaluating water allocation regimes and policies. A completely opposite ranking of the compared activities was obtained when economy-wide effects (including indirect multipliers) were taken into account, compared with considering only direct benefits.