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Registros recuperados: 23
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Development, Diffusion and Impact of Conservation Farming in Zambia AgEcon
Haggblade, Steven; Tembo, Gelson.
The study reported in this paper measures differences in profitability between conservation farming (CF) practices and conventional agriculture by comparing the value of differential output with the differential input costs. The main objective is to address and fill several important knowledge gaps by investigating three key features of conservation farming in Zambia: 1) the process by which CF originated and spread; 2) the scale of CF adoption across household groups and regions; and 3) the impact of CF on crop output, input use, cost of production and farm income.
Tipo: Report Palavras-chave: Food security; Food policy; Conservation farming; Zambia; Conventional agriculture; Farm Management; Land Economics/Use; Q18.
Ano: 2003 URL: http://purl.umn.edu/54464
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The Role of Mugaiwa in Promoting Household Food Security: Why It Matters Who Gets Access to Government Maize Imports AgEcon
Mwiinga, Billy; Nijhoff, Jan J.; Jayne, Thomas S.; Tembo, Gelson; Shaffer, James D..
The purpose of this paper is to examine the role of mugaiwa, and the small-scale trading and milling sector that provides it, in ensuring poor consumers’ access to food in the context of this marketing season’s maize deficit. The paper then identifies opportunities for Government and the private sector to increase access to affordable food among consumers.
Tipo: Report Palavras-chave: Food security; Food policy; Zambia; Mugaiwa; Agribusiness; Q18.
Ano: 2002 URL: http://purl.umn.edu/54608
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USING MIXED-INTEGER PROGRAMMING TO DETERMINE THE POTENTIAL FOR FLOUR-MILLING INDUSTRY EXPANSION AgEcon
Tembo, Gelson; Holcomb, Rodney B.; Kenkel, Philip L.; Tilley, Daniel S..
As in most predominantly agricultural states, agricultural producers in Oklahoma have expressed an interest in value-added processing opportunities. While Oklahoma produces mostly hard red winter wheat, most Oklahoma bakers require predominantly soft wheat flour for their products, almost all of which is purchased from out-of-state suppliers. An economic engineering-based, mixed-integer programming model was used to determine the optimal number, size, and location of additional flour mills in Oklahoma to capture this excess flour demand. The results suggest that additional mills are potentially justified and that the potential for additional milling will increase if Oklahoma soft wheat production increases.
Tipo: Journal Article Palavras-chave: Agribusiness.
Ano: 1999 URL: http://purl.umn.edu/27217
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Integrative Investment Appraisal of a Lignocellulosic Biomass-to-Ethanol Industry AgEcon
Tembo, Gelson; Epplin, Francis M.; Huhnke, Raymond L..
While theoretically more efficient than starch-based ethanol production systems, conversion of lignocellulosic biomass to ethanol is not without major challenges. A multi-region, multi-period, mixed integer mathematical programming model encompassing alternative feedstocks, feedstock production, delivery, and processing is developed. The model is used to identify key cost components and potential bottlenecks, and to reveal opportunities for reducing costs and prioritizing research. The research objective was to determine for specific regions in Oklahoma the most economical source of lignocellulosic biomass, timing of harvest and storage, inventory management, biorefinery size, and biorefinery location, as well as the breakeven price of ethanol, for a...
Tipo: Journal Article Palavras-chave: Biomass; Biorefinery location; Ethanol; Integrative investment appraisal; Logistics; Mixed integer programming; Resource /Energy Economics and Policy.
Ano: 2003 URL: http://purl.umn.edu/31070
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Household Level Financial Incentives to Adoption of Conservation Agricultural Technologies in Africa AgEcon
Haggblade, Steven; Tembo, Gelson; Donovan, Cynthia.
Although several studies have been conducted to determine the viability of conservation agriculture in Sub-Saharan Africa, almost all such studies are fragmented – often country specific – and with undue emphasis on output effects. However, assessment of the attractiveness of these technologies in Sub-Saharan Africa requires a detailed case-by-case comparison of changes in output and input costs and benefits. This paper reviews a set of responses known collectively as “conservation” or “sustainable” agriculture. Though definitions vary, these technologies typically involve agricultural management practices that prevent degradation of soil and water resources and thereby permit sustainable farm productivity without environmental degradation.
Tipo: Report Palavras-chave: Food security; Food policy; Conservation; Sustainable agriculture; Crop Production/Industries; Research and Development/Tech Change/Emerging Technologies; Q18.
Ano: 2004 URL: http://purl.umn.edu/54466
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Food Sector Transformation and Standards in Zambia: Smallholder Farmer Participation and Growth in the Dairy Sector AgEcon
Neven, David; Katjiuongua, Hikuepi; Adjosoediro, Ingrid; Reardon, Thomas; Chuzu, Pia Nwanza; Tembo, Gelson; Ndiyoi, Mukelabai.
Market liberalization in Zambia has led to a rapid and fundamental transformation of its dairy sector. Mainly through foreign direct investment and international partnerships, a new formal dairy sector, characterized by institutional, organizational and technological innovation, emerged from the ashes of abandoned government projects. Sensing the development opportunity that arose from an untapped milk supply potential in Zambia's traditional smallholder livestock production and a growing milk demand from the newly emerging formal dairy processing sector, numerous donor-funded smallholder dairy farmer support programs emerged. At the same time, in order to protect its domestic market as well as to be in a better position to enter demanding export markets,...
Tipo: Working or Discussion Paper Palavras-chave: Livestock Production/Industries.
Ano: 2006 URL: http://purl.umn.edu/11701
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Impact of Natural Resource Conservation Policies on Household Consumption Around Zambian National Parks AgEcon
Tembo, Gelson; Bandyopadhyay, Sushenjit; Pavy, Jean-Michel.
Key Policy Points - Game Management Areas (GMAs) in Zambia aim to combine nature conservation with economic empowerment of rural households and communities. - We find evidence of consumption gains from living in GMAs and from participating in natural resource management through Community-Resource Boards (CRBs) and Village Action Groups (VAGs). - However, these benefits are unevenly distributed. Only GMAs with limited alternative livelihoods (Bangweulu and South Luangwa) exhibit significant consumption benefits. Also, the benefits accrue mainly to the relatively well off while the poor do not gain even if they participate. - Resources from ZAWA to CRBs seldom reach the VAGs. Richer, more educated community members participate at CRB or higher level while...
Tipo: Working or Discussion Paper Palavras-chave: Zambia; Food security; Policy; Natural resources; Conservation; Agricultural and Food Policy; Community/Rural/Urban Development; Food Security and Poverty; International Development; Q18; Q56.
Ano: 2009 URL: http://purl.umn.edu/55055
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Agricultural Trade Flows among Developing Countries: Do Regional Preferential Trade Agreements make a Difference? AgEcon
Tembo, Gelson; Jayne, Thomas S..
Regional integration through trade is recognized as one way to foster economic growth and poverty reduction. This paper uses the gravity model and 11-year panel data (1996-2006) on Southern African Development Community (SADC) member countries to study Zambia’s regional agricultural trade flows and the impact of the SADC Trade Protocol (SADC-TP). Zambia’s volume of trade is significantly related to most of the standard gravity variables. The results indicate that Zambia has been largely trading below potential, especially with respect to exports. There have been improvements in Zambia’s trade flows during the SADC-TP period but only with a few countries. Further improvements will require re-examining protocol implementation and individual countries’...
Tipo: Conference Paper or Presentation Palavras-chave: Southern Africa; Regional trade; Gravity analysis; Zambia; Agricultural and Food Policy; Food Security and Poverty; International Relations/Trade; Marketing; Research Methods/ Statistical Methods; C23; C51; F12; F14; F15.
Ano: 2009 URL: http://purl.umn.edu/51733
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Fostering Agricultural Market Development in Zambia. AgEcon
Tembo, Gelson; Chapoto, Antony; Jayne, Thomas S.; Weber, Michael T..
The availability, access and affordability of food is a highly politicized issue throughout the world. In much of southern Africa, there is a widespread view that governments are responsible for ensuring that their populations have reliable access to food. Zambia, like most countries in Southern Africa, is vigorously pursuing continued direct public sector involvement and protectionist measures in the maize marketing sector. Since 1995, the Food Reserve Agency (FRA) and more recently, subsidies through the Fertilizer Support Program (FSP), have been the major instruments of government policy. While in some respects current operations undertaken by the government are similar to those adopted at independence, there are some noteworthy changes. Specifically,...
Tipo: Report Palavras-chave: Zambia; Food security; Agriculture; Market development; Marketing; Q13.
Ano: 2009 URL: http://purl.umn.edu/54501
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Wildlife Conservation in Zambia: Impacts on Rural Household Welfare AgEcon
Fernandez, Ana; Richardson, Robert B.; Tschirley, David L.; Tembo, Gelson.
FOOD SECURITY RESEARCH PROJECT, LUSAKA, ZAMBIA
Tipo: Working or Discussion Paper Palavras-chave: Zambia; Food security; Tourism; Conservation; Household income; Agricultural and Food Policy; Community/Rural/Urban Development; Crop Production/Industries; Environmental Economics and Policy; Food Security and Poverty; International Development; Land Economics/Use; Q18; Q26; Q27; Q56.
Ano: 2009 URL: http://purl.umn.edu/55053
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LINEAR RESPONSE STOCHASTIC PLATEAU FUNCTIONS AgEcon
Tembo, Gelson; Brorsen, B. Wade; Epplin, Francis M..
A method of estimating a linear response stochastic plateau function is developed and used to determine optimal levels of nitrogen fertilization for wheat. Under the stochastic plateau model, optimizing behavior implies different nitrogen levels than the linear plateau model, depending on the output/input price ratio relative to a threshold level.
Tipo: Conference Paper or Presentation Palavras-chave: Research Methods/ Statistical Methods.
Ano: 2003 URL: http://purl.umn.edu/35217
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The Impacts of Wildlife Conservation Policies on Rural Household Welfare in Zambia AgEcon
Fernandez, Ana; Richardson, Robert B.; Tschirley, David L.; Tembo, Gelson.
KEY POLICY POINTS • Tourism is increasingly important in Zambia as a vehicle for economic growth, and has been identified as a key sector for poverty reduction due to its potential to generate off-farm income and employment in rural areas. Growth in arrivals and receipts in Zambia has outpaced average growth rates for developing countries. • Tourism in Zambia relies mostly on the stock of natural resources, including the protected area system which includes national parks and game management areas (GMAs). Co-management agreements between Zambia Wildlife Authority (ZAWA) and rural communities present opportunities and threats for households living in GMAs. • Households living in GMAs have lower average income than households in other rural areas. Yet we...
Tipo: Working or Discussion Paper Palavras-chave: Wildlife conservation; Rural households; Zambia; Community/Rural/Urban Development; Environmental Economics and Policy; Food Security and Poverty; International Development; Q57.
Ano: 2009 URL: http://purl.umn.edu/53453
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The Contribution of Non-Timber Forest Products to Rural Household Income in Zambia AgEcon
Mulenga, Brian P.; Richardson, Robert B.; Mapemba, Lawrence D.; Tembo, Gelson.
Forest products play an important role in supporting rural livelihoods and food security in many developing countries. Pimentel et al. (1997) found that the integrity of forests is vital to world food security, mostly because of the dependence of the poor on forest resources. Studies of the role of forest products in household welfare in Zambia have found that such products are among the top sources of household income in some rural areas. This paper uses statistical analysis to examine the role of non-timber forest products NTFPs) in rural household welfare in Zambia, with two main objectives. First, using rural household survey data, we estimate the share of NTFP income to total household income with the aim of assessing the proportion and distribution...
Tipo: Working or Discussion Paper Palavras-chave: Zambia; Non-Timber Forest Products; Rural Household Income; Agricultural and Food Policy; Consumer/Household Economics; Resource /Energy Economics and Policy.
Ano: 2011 URL: http://purl.umn.edu/109887
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How Will the Proposed Crop Marketing Authority Affect Food Market Performance in Zambia: An Ex Ante Assessment to Guide Government Deliberation AgEcon
Nijhoff, Jan J.; Tembo, Gelson; Shaffer, James D.; Jayne, Thomas S.; Shawa, Julius J..
This paper aims to summarize the rationale and objectives of the Crop Marketing Authority and the possible consequences of adopting the proposed legislation. We also identify where the proposal, in its current form, requires additional specificity in order to evaluate its ability to meet Government’s objectives of enhancing food security and sustainable crop marketing.
Tipo: Report Palavras-chave: Food security; Food policy; Crop marketing authority; Zambia; Marketing; Q18.
Ano: 2003 URL: http://purl.umn.edu/54463
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Contribution of Non-Timber Forest Products to Rural Household Income in Zambia AgEcon
Mulenga, Brian P.; Richardson, Robert B.; Mapemba, Lawrence D.; Tembo, Gelson.
Non-timber forest products (NTFPs) play an important role in supporting rural livelihoods and food security in Zambia. NTFP-dependent households are poorer, have younger household heads with lower levels of education, and are located closer to district towns than other rural households are. NTFPs are a particularly important source of income in Luapula, Northwestern and Western provinces. • Income from woodfuel represented the greatest share of income for households that participated in NTFPs, and it was the most commonly reported business activity, with 68% of NTFP households reporting income from charcoal and firewood. NTFPs contribute an average of 32% to total household income among participants, with the poorest being more dependent on these sources....
Tipo: Report Palavras-chave: NON-TIMBER FOREST; ZAMBIA; Agricultural and Food Policy; Consumer/Household Economics.
Ano: 2011 URL: http://purl.umn.edu/116906
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Enabling Small-Scale Maize Marketing and Processing to Assure Supplies of Low-Cost Staples AgEcon
Mwiinga, Billy; Nijhoff, Jan J.; Tschirley, David L.; Weber, Michael T.; Jayne, Thomas S.; Arlindo, Pedro; Tembo, Gelson; Shaffer, James D..
Tipo: Working or Discussion Paper Palavras-chave: Crop Production/Industries; Downloads December 2008 - July 2009: 6.
Ano: 2003 URL: http://purl.umn.edu/11296
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Natural Resource Management, Food Security and Rural Development in Zambia: Moving From Research to Action AgEcon
Simasiku, Phyllis; Chapoto, Antony; Richardson, Robert B.; Sichilongo, Mwape; Tembo, Gelson; Weber, Michael T.; Zulu, Alimakio.
More effective policies are needed to improve access and secure rights to land and other natural resources for various stakeholders, particularly smallholder farmers. Service delivery at all levels of governance needs to be restructured and strengthened in order to promote and improve economic development and management of natural resources in both open and protected areas. New strategies are needed for protecting and developing natural resource areas based on appropriate resource management systems that promote broad-based participation and sharing of benefits, and offer potential for more effective community-based natural resource management. Improvements are needed in natural resource policy and law review processes in order to take better advantage...
Tipo: Working or Discussion Paper Palavras-chave: Zambia; Food security; Rural development; Natural resource management; Agricultural and Food Policy; Community/Rural/Urban Development; Food Security and Poverty; International Development; Q16; Q18; Q27; Q30.
Ano: 2010 URL: http://purl.umn.edu/58543
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INTEGRATED CROP AND LIVESTOCK RISK MODELING AgEcon
Tembo, Gelson; Kaitibie, Simeon; Epplin, Francis M..
This study was conducted to determine risk efficient production strategies for crop and livestock producers who have the opportunity to produce wheat as a dual-purpose forage and grain crop. Empirical data obtained from field trials were incorporated into an integrated crop and livestock production and marketing risk programming model.
Tipo: Conference Paper or Presentation Palavras-chave: Production Economics; Risk and Uncertainty.
Ano: 1999 URL: http://purl.umn.edu/21505
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Natural Resource Management, Food Security, and Rural Development in Zambia: Moving From Research Evidence to Action Proceedings of the Public Forum AgEcon
Simasiku, Phyllis; Chapoto, Antony; Richardson, Robert B.; Sichilongo, Mwape; Tembo, Gelson; Weber, Michael T.; Zulu, Alimakio.
Natural resource use, including land, and rural population location is an important topic for Zambia's development strategy. Among other efforts, the Government of Zambia (GRZ) has designated 22% of total land area, as Game Management Areas (GMAs) for human settlements and wildlife conservation. Other GRZ programmes seek to improve food security and agricultural productivity, including the use and improvement of conservation farming techniques. GRZ is currently reviewing policies in the agricultural, forestry, fisheries, wildlife and land sectors. Research in these fields has much to contribute to effective management of MAs, increased agricultural productivity and improved welfare, especially for the rural population.
Tipo: Working or Discussion Paper Palavras-chave: Zambia; Africa; Natural resources management; GMA; Wildlife management policies; Agricultural and Food Policy; Environmental Economics and Policy; Food Security and Poverty; International Development; Q34.
Ano: 2010 URL: http://purl.umn.edu/58518
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CONSERVATION FARMING IN ZAMBIA AgEcon
Haggblade, Steven; Tembo, Gelson.
Declining soil fertility and recurrent drought pose serious challenges to farmers in Africa’s semi-arid regions, where half of all farmland suffers from erosion and nutrient depletion (Cleaver and Schreiber, 1997). In response, farmers and researchers across the continent have experimented with a broad array of soil and water conserving technologies (Reij et al., 1996). This paper describes the development and dissemination of one such technology from Zambia.
Tipo: Working or Discussion Paper Palavras-chave: Farm Management.
Ano: 2003 URL: http://purl.umn.edu/16064
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