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Organic agriculture seems to be a profitable enterprise for small scale farmers in developing countries, also in Africa, to enter high value markets in the Northern hemisphere and overcome the crises of declining terms of trade on global agricultural produce markets. It is also seen as a way to o...


Abele, S.Dubois, T.Twine, Edgar E.Sonder, K.Coulibaly, O.[Organic agriculture in Africa: a critical review from a multidisciplinary perspective]Organic agriculture in Africa: a critical review from a multidisciplinary perspective

The study uses a partial equilibrium model of Tanzania’s informal dairy value chain to determine the benefits to milk producers and consumers from three policy interventions proposed in the Tanzania Livestock Modernization Initiative (TLMI). Using aggregate time series data to simulate the model,...


Twine, Edgar E.[Production and consumption responses to policy interventions in Tanzania's dairy industry]Production and consumption responses to policy interventions in Tanzania's dairy industry

Demonstrating how agricultural research contributes to development outcomes is difficult but necessary given competing demands for scarce resources. This article summarises an adaptation of the “theory of change” approach and lessons derived from its application to improve the design and implemen...


Omore, Amos O.Kidoido, Michael M.Twine, Edgar E.Kurwijila, Lusato R.O’Flynn, MaureenMugwe, Julius G.[Using “theory of change” to improve agricultural research: Recent experience from Tanzania]Using “theory of change” to improve agricultural research: Recent experience from Tanzania

Strategies for environmental governance and conservation in Africa have relied on regulatory mechanisms (policies) that further restrict already limited livelihood options by prohibiting certain land uses and isolating people from forest resources. Environmental service rewards (ESR) present an o...


German, L.Villamor, G.Twine, Edgar E.Velarde, S.J.Kidane, B.[Environmental services and the precautionary principle: using scenarios to reconcile conservation and livelihood objectives in upper catchments]Environmental services and the precautionary principle: using scenarios to reconcile conservation and livelihood objectives in upper catchments

The study uses the flexible accelerator model to examine determinants of the level and growth of investment in machinery and equipment for a sample of tea-processing firms in Uganda. Using a dynamic panel data model, we find that, in the long run, the level of investment in machinery and equipmen...


Twine, Edgar E.Kiiza, B.Bashaasha, B.[The flexible accelerator model of investment: An application to Ugandan tea-processing firms]The flexible accelerator model of investment: An application to Ugandan tea-processing firms

Mandatory country of origin labeling (COOL) has become a thorny issue in U.S.–Canada bilateral trade relations. We undertake an ex post investigation of the impact of the law on U.S. imports of Canadian beef, feeder, and fed cattle. Using a partial equilibrium framework, we derive U.S. import dem...


Twine, Edgar E.Rude, J.Unterschultz, J.[Country of origin labeling and structural change in U.S. imports of Canadian cattle and beef]Country of origin labeling and structural change in U.S. imports of Canadian cattle and beef

Improving the economic, social and environmental sustainability of milk production in Tanzania requires relevant indicators to monitor its progress. There is no existing set of indicators to assess sustainability of smallholder dairy farming systems in Tanzania. This study was carried out to iden...


Munyaneza, CelestinKurwijila, Lusato R.Mdoe, Ntengua S.Y.Baltenweck, IsabelleTwine, Edgar E.[Identification of appropriate indicators for assessing sustainability of small-holder milk production systems in Tanzania]Identification of appropriate indicators for assessing sustainability of small-holder milk production systems in Tanzania

The study evaluates the impact of risk on enterprises of male, female and young farmers operating in the formal and informal smallholder dairy value chains in Tanzania. It also examines the effect of uncertainty on the decision to invest in milk production in the two value chains. Results indicat...


Twine, Edgar E.Omore, Amos O.Githinji, J.W.K.[Uncertainty in milk production by smallholders in Tanzania and its implications for investment]Uncertainty in milk production by smallholders in Tanzania and its implications for investment
Rao, E.J.O.Mtimet, NadhemTwine, Edgar E.Baltenweck, IsabelleOmore, Amos O.[Farmers’ preference for bundled input–output markets and implications for adapted dairy hubs in Tanzania—A choice experiment]Farmers’ preference for bundled input–output markets and implications for adapted dairy hubs in Tanzania—A choice experiment
Twine, Edgar E.Rao, E.J.O.Baltenweck, IsabelleOmore, Amos O.[Are technology adoption and collective action important in accessing credit? Evidence from milk producers in Tanzania]Are technology adoption and collective action important in accessing credit? Evidence from milk producers in Tanzania

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