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| Rios, Ana R.; Masters, William A.; Shively, Gerald E.. |
| We build upon international trade literature to analyze the direction of causality between market participation and productivity. Cross-country household data from Tanzania, Vietnam and Guatemala are used in a 2SLS approach with market participation and productivity as endogenous variables. Results indicate that households with higher productivity tend to participate in agricultural markets regardless of market access factors. In contrast, having better market access does not necessarily lead to higher productivity. This finding suggests that investments in market access infrastructure provide minimal, if any, improvements in agricultural productivity; whereas programs targeted at enhancements in farm structure and capital have the potential to increase... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: International Relations/Trade; Marketing; Productivity Analysis. |
| Ano: 2008 |
URL: http://purl.umn.edu/6145 |
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| Ahmed, Syud Amer; Diffenbaugh, Noah S.; Hertel, Thomas W.; Ramankutty, Navin; Rios, Ana R.; Rowhani, Pedram. |
| Climate volatility will increase in the future, with agricultural productivity expected to become increasingly volatile as well. For Tanzania, where food production and prices are sensitive to the climate, rising climate volatility can have severe implications for poverty. We develop and use an integrated framework to estimate the poverty vulnerabilities of different socio-economic strata in Tanzania under current and future climate. We find that households across various strata are similarly vulnerable to being impoverished when considered in terms of their stratum’s populations, with poverty vulnerability of all groups higher in the 21st Century than in the late 20th Century. When the contributions of the different strata to the national poverty changes... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Climate; Volatility; Poverty vulnerability; Tanzania; Environmental Economics and Policy; Food Security and Poverty; International Development. |
| Ano: 2009 |
URL: http://purl.umn.edu/49358 |
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| Rios, Ana R.; Shively, Gerald E.. |
| We study the efficiency of smallholder coffee farms in Vietnam. Data from a 2004 survey of farms in two districts in Dak Lak Province are used in a two-step analysis. In the first step, technical and cost efficiency measures are calculated using DEA. In the second step, Tobit regressions are used to identify factors correlated with technical and cost inefficiency. Results indicate that small farms were less efficient than large farms. Inefficiencies observed on small farms appear to be related, in part, to the scale of investments in irrigation infrastructure. |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Farm Management. |
| Ano: 2005 |
URL: http://purl.umn.edu/19159 |
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| Rios, Ana R.; Gray, Allan W.. |
| This study examines rate of concentration of farms and sales for aggregate farm production and crop and livestock activities during the 1982 to 2002 period. Data from the Census of Agriculture are used to calculate Theil's relative entropy measure as an indicator of concentration. Results indicate that Grain segments are lagging behind cotton, potato and hog segments in terms of concentration of total sales, while concentration in the dairy segment appears to be gaining steam. Agribusiness serving less concentrated industry segments should look to the more concentrated segments as leading indicators for effective marketing strategies as concentration increases. |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Concentration; Commodities; Entropy; Agribusiness. |
| Ano: 2005 |
URL: http://purl.umn.edu/19136 |
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