You searched for: Content Type Working Paper Remove constraint Content Type: Working Paper Publishing Institution United Nations University Remove constraint Publishing Institution: United Nations University Political Geography South America Remove constraint Political Geography: South America Topic Agriculture Remove constraint Topic: Agriculture
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  • Author: Benjamin Davis, Calogero Carletto, Angeli Kirk, Paul Winters
  • Publication Date: 02-2008
  • Content Type: Working Paper
  • Institution: United Nations University
  • Abstract: This paper uses a duration analysis based on adoption data spanning over 25 years from six communities in the Central Highlands of Guatemala to explore how household characteristics and external trends play into both the adoption and diffusion processes of non-traditional exports among smallholders. Adoption was initially widespread and rapid, which led NTX to be hailed as a pro-poor success, reaching all but the smallest landholders. However, over time more than two-thirds of the adopters eventually dropped out from NTX production. Based on the analysis, NTX production.
  • Topic: Agriculture, International Trade and Finance
  • Political Geography: South America, Yugoslavia, Tunisia
  • Author: Liangzhi You
  • Publication Date: 03-2008
  • Content Type: Working Paper
  • Institution: United Nations University
  • Abstract: This paper looks at differences in spatial and temporal variation of rice yields in China and Brazil. We find that rice yields in China have converged over time and that rice production has become more and more homogeneous. In contrast, rice yields in Brazil have diverged over time, primarily due to variations in upland rice yields. Three hypotheses are put forward to explain the different behaviour of rice yields in Brazil and China: (i) differences in production systems (i.e., irrigated in China versus upland in Brazil); (ii) changes in rainfall patterns and (iii) bias in agricultural R favouring irrigated rice. Our empirical analysis provides support to the first two hypotheses by establishing that upland rice is subjected to much greater variation in yields than irrigated rice and that changing rainfall patterns affect mostly upland rice. We also provide evidence of the bias towards irrigated systems by looking at the patterns of varietal release.
  • Topic: Agriculture
  • Political Geography: China, Asia, Brazil, South America