Sabiia Seb
PortuguêsEspañolEnglish
Embrapa
        Busca avançada

Botão Atualizar


Botão Atualizar

Ordenar por: RelevânciaAutorTítuloAnoImprime registros no formato resumido
Registros recuperados: 48
Primeira ... 123 ... Última
Imagem não selecionada

Imprime registro no formato completo
Market Access by Smallholder Farmers in Malawi: Implications for Technology Adoption, Agricultural Productivity, and Crop Income AgEcon
Zeller, Manfred; Diagne, Aliou; Mataya, Charles.
In Malawi, maize is the major crop and food staple. Given limited off-farm employment opportunities, much-needed increases in household income for improving food security must come from gains in agricultural productivity through better technology and more profitable crops. In the past, agricultural policy promoted hybrid maize and, more recently, tobacco to increase smallholder income. This paper presents an analysis of what determines the adoption of these two crops and what kind of income effects follow from adoption. Apart from factor endowment and exposure to agroecological risks, differences in the household's access to financial and commodity markets significantly influence its cropping shares and farm income.
Tipo: Working or Discussion Paper Palavras-chave: Employment; Non-agricultural; Malawi; Tobacco; Price; Food Security; Maize; Crop Production/Industries; Marketing.
Ano: 1997 URL: http://purl.umn.edu/97054
Imagem não selecionada

Imprime registro no formato completo
Market Integration with Transaction Costs in Developing Country Staple Food Markets: the Case of the Malawi Maize market AgEcon
Zant, Wouter.
We investigate measurement of market integration of staple food markets in developing countries. The analysis takes the Parity Bound Model as starting point and modifies this model by parameterizing and estimating transaction costs. The specification of transaction costs takes account of transport costs, fixed source costs, fixed destination costs, ad valorem taxes & levies and seasonality an is implemented on the basis of a specific sub-sample of price differentials. Price differentials combined with predicted transaction costs enable the measurement of market integration for each location and each period. The proposed method is applied to the Malawi maize market with monthly data from June 1999 to October 2009 for 26 districts. This period covers two...
Tipo: Journal Article Palavras-chave: Food markets; Transaction costs; Trade; Market integration; Parity Bound Model; Malawi; Africa; Crop Production/Industries; Marketing; F14; Q13.
Ano: 2010 URL: http://purl.umn.edu/95777
Imagem não selecionada

Imprime registro no formato completo
Marriage Behavior Response to Prime-Age Adult Mortality: Evidence from Malawi AgEcon
Ueyama, Mika; Yamauchi, Futoshi.
This paper examines the effect of AIDS-related mortality of the prime-age adult population on marriage behavior among women in Malawi. A rise in prime-age adult mortality increases risks associated with the search for a marriage partner in the marriage market. A possible behavioral change in the marriage market in response to an increase in prime-age adult mortality is for marriage to occur earlier to avoid women’s exposure to HIV/AIDS risks under the condition that the risks are higher during singlehood. We test this hypothesis using micro data from Malawi, where prime-age adult mortality has drastically increased. In the analysis, we estimate prime-age adult mortality that sample women have observed during the adolescent period by utilizing retrospective...
Tipo: Working or Discussion Paper Palavras-chave: HIV/AIDS; Marriage; Sexual behavior; Malawi; Labor and Human Capital.
Ano: 2008 URL: http://purl.umn.edu/42327
Imagem não selecionada

Imprime registro no formato completo
Monitoring of Public Spending in Agriculture in Southern Africa AgEcon
Chilonda, Pius; Olubode-Awosola, Femi; Minde, Isaac J.; Njiwa, Daniel; Govereh, Jones.
Public resources are limited and have competing demands, hence prioritization will be critical. Policymakers want to know what public spending on agriculture sector will have the largest impact on the poor and how the resources should be allocated among the different sub-sectors. This brief examines the SADC region’s progress toward meeting the commitments made by African Heads of State and Government in the 2003 Maputo Declaration on Agriculture and Food Security to allocate at least 10 percent of national budgetary resources to agricultural sectors. Further, to build understanding of the challenges and opportunities facing governments as they strive to meet this target, the results of case studies of public expenditures on agriculture in Malawi and...
Tipo: Conference Paper or Presentation Palavras-chave: Public spending; Agriculture; Southern africa; Malawi; Zambia; Agricultural Finance; Food Security and Poverty.
Ano: 2009 URL: http://purl.umn.edu/51663
Imagem não selecionada

Imprime registro no formato completo
Mortality, Mobility, and Schooling Outcomes Among Orphans: Evidence from Malawi AgEcon
Ueyama, Mika.
A tremendous increase in the number of orphans associated with a sharp rise in prime-age adult mortality due to AIDS has become a serious problem in Sub-Saharan Africa. In fact, more than 30 percent of school-aged children have lost at least one parent in Malawi. Lack of investments in human capital and adverse conditions during childhood are often associated with lower living standards in the future. Therefore, if orphans face an increased risk of poverty, exploitation, malnutrition, and poorer access to health care and schooling, early intervention is critical so as to avoid the potential poverty trap. The purpose of this study is to investigate the impacts of orphanhood/parental death on children’s mortality risks, migration behaviors, and schooling...
Tipo: Working or Discussion Paper Palavras-chave: Orphan; Mortality; Mobility; School enrollment; Grade progression; HIV/AIDS; Sample attrition; Malawi; Labor and Human Capital.
Ano: 2007 URL: http://purl.umn.edu/42403
Imagem não selecionada

Imprime registro no formato completo
Operational Models for Improving the Targeting Efficiency of Agricultural and Development Policies: A systematic comparison of different estimation methods using out-of-sample tests AgEcon
Houssou, Nazaire; Zeller, Manfred.
Accurate targeting is key for the success of any development policy. While a number of factors might explain low targeting efficiency such as governance failure, political interference or lack of political will, this paper focuses on improving indicator-based models that identify poor households and smallholder farmers more accurately. Using stepwise regressions along with out-of-sample validation tests and receiver operating characteristic curves, this paper develops proxy means tests models for rural and urban Malawi. The models developed have proved their validity in an independent sample and therefore, can be used to target a wide range of development policies to the poor. This makes the models a potentially interesting policy tool for the country.
Tipo: Conference Paper or Presentation Palavras-chave: Malawi; Poverty targeting; Predictions; Proxy means tests; Out-of-sample tests; ROC curve; Bootstrap; Agricultural and Food Policy; Agricultural Finance; Community/Rural/Urban Development; Food Security and Poverty; International Development; Political Economy; Research Methods/ Statistical Methods; C01; C13; C51; C52; I3; I32; Q14.
Ano: 2009 URL: http://purl.umn.edu/51454
Imagem não selecionada

Imprime registro no formato completo
Promoting Fertilizer Use in Africa: Current Issues and Empirical Evidence from Malawi, Zambia, and Kenya AgEcon
Minde, Isaac J.; Jayne, Thomas S.; Crawford, Eric W.; Ariga, Joshua; Govereh, Jones.
This study was funded jointly by the Regional Strategic Agricultural Knowledge Support System (Re-SAKSS) for Southern Africa, based at International Water Management Institute, Pretoria, South Africa, and by the United States Agency for International Development's Africa Bureau. Much of the data and analysis reported in this study was carried out under the Tegemeo Agricultural Monitoring and Policy Analysis Project, funded by USAID/Kenya; the Food Security Research Project/Markets, Trade and Enabling Environment (MATEP) Program, funded by USAID/Zambia and the Swedish International Development Agency; and by the DFID and USAID offices in Lilongwe, Malawi.
Tipo: Report Palavras-chave: Fertilizer; Africa; Malawi; Zambia; Kenya; Crop Production/Industries; Q18.
Ano: 2008 URL: http://purl.umn.edu/54934
Imagem não selecionada

Imprime registro no formato completo
Promoting Fertilizer Use in Africa: Current Issues and Empirical Evidence from Malawi, Zambia, and Kenya AgEcon
Minde, Isaac J.; Jayne, Thomas S.; Crawford, Eric W.; Ariga, Joshua; Jones, Govereh.
It is generally agreed that increasing agricultural productivity is critical to stimulating the rate of economic growth in Africa. There are many important and often complementary determinants of agricultural productivity. In this brief and the full paper it draws from, the focus is on fertilizer and improved seed, without intending to imply that they are the only or most significant productivity determinants.
Tipo: Report Palavras-chave: Fertilizer; Africa; Malawi; Zambia; Kenya; Crop Production/Industries; Food Security and Poverty; Q18.
Ano: 2008 URL: http://purl.umn.edu/54509
Imagem não selecionada

Imprime registro no formato completo
SOIL FERTILITY MANAGEMENT AND AGRICULTURAL PRODUCTIVITY IN MALAWI AgEcon
Tchale, Hardwick; Sauer, Johannes.
In this paper we analyze the factors that influence the productivity of maize among smallholder farmers. We use farm-household survey data in order to compare the productivity of smallholder maize production under integrated (ISFM) and chemical-based soil fertility management using a normalized translog yield response model. The results indicate higher maize yield responses for integrated soil fertility management options after controlling for the intensity of fertilizer application, labour intensity, seed rate, land husbandry practices as well as selected policy factors. The estimated model is highly consistent with theoretical conditions. Thus we conclude that the use of ISFM improves maize productivity, compared to the use of inorganic fertilizer only....
Tipo: Conference Paper or Presentation Palavras-chave: Malawi; Smallholder agriculture; Soil fertility management; Yield response model; Farm Management.
Ano: 2006 URL: http://purl.umn.edu/14954
Imagem não selecionada

Imprime registro no formato completo
Soil Fertility Management And Maize Productivity In Malawi: Curvature Correct Efficiency Modeling And Simulation AgEcon
Tchale, Hardwick; Sauer, Johannes.
We assess the level and determinants of relative technical efficiency of maize-based smallholder farmers using a translog stochastic frontier (TL) model and a symmetric generalized Barnett production function (SGB), both of which are tested for economic regularity conditions. In addition, we conduct a bootstrapping procedure in order to infer about the probability distributions and significance of the relative efficiency values for farmers using different soil fertility management options. The results indicate that higher levels of relative technical efficiency obtain when farmers use integrated soil fertility options compared to the use of chemical fertilizer only. The consistency of the results across the two models increase the robustness of the...
Tipo: Conference Paper or Presentation Palavras-chave: Smallholder agriculture; Relative technical efficiency; Soil fertility management; Malawi; Agricultural and Food Policy; Consumer/Household Economics; Demand and Price Analysis; Farm Management; Food Consumption/Nutrition/Food Safety; Food Security and Poverty; International Relations/Trade; Labor and Human Capital; Productivity Analysis; Research and Development/Tech Change/Emerging Technologies.
Ano: 2008 URL: http://purl.umn.edu/52077
Imagem não selecionada

Imprime registro no formato completo
Soil Fertility Management Choice in the Maize-Based Smallholder Farming System in Malawi AgEcon
Wobst, Peter; Tchale, Hardwick; Frohberg, Klaus.
The paper analyses the factors that affect smallholder farmers’ choice of soil fertility management options in Malawi using a two-stage maximum likelihood estimation procedure. Using results from the Double-Hurdle model, the paper estimates the probabilities and intensities of fertilizer application conditional on choice of inorganic fertilizer. The findings indicate that relative wealthy indicators, human capital, credit and market access, food security index and land pressure are the main factors that greatly influence farmers’ choice and intensity of input investment. Although there is a high and positive correlation between probability of adoption and intensity of application, factors that influence adoption are not necessarily the same as those that...
Tipo: Conference Paper or Presentation Palavras-chave: Soil fertility management; Smallholder farmers; Double-Hurdle model; Malawi; Resource /Energy Economics and Policy.
Ano: 2004 URL: http://purl.umn.edu/9524
Imagem não selecionada

Imprime registro no formato completo
Staple food prices in Malawi AgEcon
Minot, Nicholas.
Prepared for the Comesa policy seminar on “Variation in staple food prices: Causes, consequence, and policy options”, Maputo, Mozambique, 25-26 January 2010 under the African Agricultural Marketing Project (AAMP)
Tipo: Conference Paper or Presentation Palavras-chave: Malawi; Food security; Food prices; Agricultural and Food Policy; Demand and Price Analysis; Food Security and Poverty; International Development; International Relations/Trade; Q11; Q13; Q18.
Ano: 2010 URL: http://purl.umn.edu/58558
Imagem não selecionada

Imprime registro no formato completo
Studies on the Streptaxidae (Mollusca: Gastropoda Pulmonata) of Malaw^ i 5. Description of Gulella meredithae spec. nov. Naturalis
Bruggen, A.C. van.
Gulella meredithae spec. nov. is described from the uplands of central and northern Malawi. It belongs to what has been termed the G. browni-group (better called the G. radius-group), an assemblage of Central and East African taxa with small shells with a noticeably acute apex, with more or less smooth nepionic whorls and with marked costulation on the remaining whorls. Attention is drawn to the striking juvenile apertural dentition.
Tipo: Article / Letter to the editor Palavras-chave: Gastropoda; Pulmonata; Streptaxidae; Gulella; Africa; Malawi; Juvenile dentition; Taxonomy; 42.73.
Ano: 2000 URL: http://www.repository.naturalis.nl/record/216030
Imagem não selecionada

Imprime registro no formato completo
Studies on the Streptaxidae (Mollusca: Gastropoda Pulmonata) of Malawi 12 Four new species of Gulella s.l. Naturalis
Bruggen, A.C. van.
Gulella annibiodiversitatis spec. nov. is described from a few scattered localities in montane forest above c. 1300 m in southern-central Malaŵi. It is mainly characterized by a smallish (4.9-6.3 mm high), smooth and generally featureless shell without apertural dentition. Gulella menkhorsti spec. nov., has a small (2.3-2.9 mm high) and smooth shell with a six-fold dentition and is probably a restricted range endemic; so far it has only been recorded from the Mpita Forest in southern Malaŵi. A single smooth and small shell (2.7 mm) with a seven-fold apertural dentition from the Misuku Hills in northern Malaŵi also does represent a new species, Gulella crux spec. nov. Another sample from the same area, introduced as Gulella nuchalis spec. nov., has a...
Tipo: Article / Letter to the editor Palavras-chave: Gastropoda; Pulmonata; Streptaxidae; Gulella; Malawi; East Africa; Taxonomy.
Ano: 2011 URL: http://www.repository.naturalis.nl/record/638094
Imagem não selecionada

Imprime registro no formato completo
Studies on the Streptaxidae (Mollusca: Gastropoda Pulmonata) of Malawi9. Description of Gulella streptostelopsis, a new Streptostele-like species of Gulella. Naturalis
Bruggen, A.C. van.
Gulella streptostelopsis spec. nov. is described from a series of localities of mainly between 1000 and 1500 m a.s.l. in Malawi south of about 11°S. The minute, almost smooth, shell (length 2.0-2.4 mm) resembles that of the genus Streptostele (hence the name), but is characterized by three-fold apertural dentition and just under six whorls. This taxon may represent a new genus; pending studies on the anatomy no new generic name is proposed.
Tipo: Article / Letter to the editor Palavras-chave: Gastropoda; Pulmonata; Streptaxidae; Gulella; Streptostele; Taxonomy; Malawi; East Africa; 42.73.
Ano: 2007 URL: http://www.repository.naturalis.nl/record/226596
Imagem não selecionada

Imprime registro no formato completo
Subsistence farmer preferences for alternative incentive policies to encourage the adoption of conservation agriculture in Malawi: A choice elicitation approach AgEcon
Marenya, Paswel Phiri; Smith, Vincent H.; Nkonya, Ephraim M..
Land degradation in most sub Saharan Africa is a widely recognized problem and is due in large part to poor land management practices. To address this problem, several policy-based incentives to increase the adoption of better land management practices have been proposed, including fertilizer subsidies, cash payments and, more recently, subsidized or commercially offered weather index-based insurance contracts. However, little is known about farmers’ preferences among these policy alternatives, their relative effectiveness, and their likely fiscal implications. Using survey and choice elicitation data from 271 farmers in Central Malawi, this study examines smallholder farmers’ preferences among four major policy options that provide incentives for adopting...
Tipo: Presentation Palavras-chave: Choice elicitation; Cash transfer; Fertilizer subisdy; Incenitves; Indemnity insurance; Malawi; Agricultural and Food Policy; International Development; Q12; Q24.
Ano: 2012 URL: http://purl.umn.edu/124010
Imagem não selecionada

Imprime registro no formato completo
Targeting the poor and smallholder farmers: empirical evidence from Malawi AgEcon
Houssou, Nazaire; Zeller, Manfred.
This paper develops low cost, reasonably accurate, and simple models for improving the targeting efficiency of development policies in Malawi. Using a stepwise logistic regression (weighted) along with other techniques applied in credit scoring, the research identifies a set of easily observable and verifiable indicators for correctly predicting whether a household is poor or not, based on the 2004-05 Malawi Integrated Household Survey data. The predictive power of the models is assessed using out-of-sample validation tests and receiver operating characteristic curves, whereas the model’s robustness is evaluated by bootstrap simulation methods. Finally, sensitivity analyses are performed using the international and extreme poverty lines. The models...
Tipo: Working or Discussion Paper Palavras-chave: Malawi; Poverty targeting; Proxy means tests; Out-of-sample tests; Bootstrap; Food Security and Poverty; Research Methods/ Statistical Methods; I32; C15.
Ano: 2009 URL: http://purl.umn.edu/57988
Imagem não selecionada

Imprime registro no formato completo
The efficiency of smallholder agriculture in Malawi AgEcon
Tchale, Hardwick.
This paper analyses Malawi’s smallholder agricultural efficiency, using a nationally representative sample survey of rural households undertaken by the National Statistical Office in 2004/2005. It aims to inform agricultural policy about the level and key determinants of inefficiency in the smallholder farming system that need to be addressed to raise productivity. The study found that the factors that improve efficiency are higher output prices relative to input costs, favorable commodity and input markets, farmers’ organizations, extension, productive assets, and the quantity and productivity of household labor. The wide range of inefficient practices suggests there is considerable scope for improving efficiency in the smallholder sub-sector. The paper...
Tipo: Journal Article Palavras-chave: Smallholder agriculture; Efficiency; Malawi; Farm Management.
Ano: 2009 URL: http://purl.umn.edu/56909
Imagem não selecionada

Imprime registro no formato completo
The Impact of Access to Credit on the Adoption of hybrid maize in Malawi: An Empirical test of an Agricultural Household Model under credit market failure AgEcon
Simtowe, Franklin; Zeller, Manfred.
Guided by the frame work of a household model under credit market failure, this paper aims at investigating the impact of access to credit on the adoption of hybrid maize among households that vary in their credit constraints. The data used in the study is from Malawi collected by the International Food Policy Research Institute (IFPRI).Using the direct elicitation approach; households are classified into constrained and unconstrained regimes. The impact of access to credit is estimated using a switching regression in a Double-Hurdle model. Results reveal that while access to credit increases adoption among credit constrained households, it has no effect among unconstrained households. Results also show that factors that affect adoption among credit...
Tipo: Conference Paper or Presentation Palavras-chave: Credit constraints; Double-hurdle; Hybrid maize; Adoption; Malawi; Agricultural and Food Policy; Agricultural Finance; Demand and Price Analysis; Environmental Economics and Policy; Farm Management; Food Consumption/Nutrition/Food Safety; Food Security and Poverty; International Relations/Trade; Labor and Human Capital; Marketing; Productivity Analysis; Research and Development/Tech Change/Emerging Technologies; Resource /Energy Economics and Policy.
Ano: 2008 URL: http://purl.umn.edu/52076
Imagem não selecionada

Imprime registro no formato completo
The Impact of credit constraints on the adoption of hybrid maize in Malawi AgEcon
Simtowe, Franklin; Zeller, Manfred; Diagne, Aliou.
The paper investigates the impact of credit constraints on the adoption of hybrid maize among rural households in Malawi using the treatment-effects model. Results reveal that after effectively correcting for endogeneity, credit constraints have a reducing effect on the size of land allocated to hybrid maize. Farmers with larger land holdings allocate more land to hybrid maize while older farmers allocate less land to hybrid maize. These findings suggest that there is scope for increasing the cultivation of hybrid maize in Malawi if credit is targeted at younger farmers that are credit-constrained.
Tipo: Conference Paper or Presentation Palavras-chave: Credit constraints; Hybrid maize; Adoption; Treatment- effect; Endogenous; Malawi; Agribusiness; Agricultural and Food Policy; Agricultural Finance; Consumer/Household Economics.
Ano: 2009 URL: http://purl.umn.edu/51627
Registros recuperados: 48
Primeira ... 123 ... Última
 

Empresa Brasileira de Pesquisa Agropecuária - Embrapa
Todos os direitos reservados, conforme Lei n° 9.610
Política de Privacidade
Área restrita

Embrapa
Parque Estação Biológica - PqEB s/n°
Brasília, DF - Brasil - CEP 70770-901
Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco

Valid HTML 4.01 Transitional