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| Pender, John L.; Abdoulaye, Tahirou; Ndjeunga, Jupiter; Gerard, Bruno; Edward, Kato. |
| This study investigates the impacts of access to inventory credit (warrantage), input supply shops, fertilizer micro-dosing demonstrations, and other factors on farmers' use of inorganic and organic fertilizer in Niger, and the impacts on crop yields. We find that access to warrantage and input shops and participation in fertilizer micro-dosing demonstrations have increased use of inorganic fertilizer. Access to off-farm employment and ownership of traction animals also contribute to use of inorganic fertilizer. Use of organic fertilizer is less affected by these factors, but is substantially affected by the household's crop mix, access to the plot, ownership of durable assets, labor and land endowments, and participation in farmers' associations. Land... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Crop Production/Industries. |
| Ano: 2006 |
URL: http://purl.umn.edu/25643 |
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| Ndjeunga, Jupiter; Bantilan, Ma Cynthia S.. |
| During the last 3 decades, donors and governments have invested in the development and dissemination of new technologies in the semi-arid tropics of West Africa. Though a wide range of improved technologies has been developed, adoption remains low without a significant impact on crop productivity, rural income and poverty. Agricultural transformation as occurred in East Asia has not yet occurred in the semi-arid tropics of West Africa. This paper uses data from a regional survey of rural households in 3 countries in West Africa (Burkina Faso, Mali, and Niger) to identify the determinants of uptake of improved technologies. Limited productivity gain is found to be a major constraint to the uptake of technologies. In addition, poorly functioning... |
| Tipo: Journal Article |
Palavras-chave: Institutions; Technology; Markets; Road infrastructure; Information; Agricultural productivity; International Development. |
| Ano: 2005 |
URL: http://purl.umn.edu/110146 |
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| Ndjeunga, Jupiter; Nelson, Carl H.. |
| In this study, we evaluate the preference of consumers in Niger for different tuwo or couscous characteristics using conjoint analysis. Data were collected through a structured survey administered at 4 sites. Preferences are estimated for three products (couscous, fermented tuwo and nonfermented tuwo) made from 5 pearl millet cutivars. We provide relative valuation for different traits by type of product. Results show that product taste, visual characteristics, and textural attributes are important. The different valuation of characteristics across products and ethnic groups, however, suggests that signals regarding preferences may be very noisy. Consequently, it might be difficult to design pearl millet improvement programs, or food processing... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Pearl millet genetics; Characteristics; Conjoint analysis; Food processing; Food Consumption/Nutrition/Food Safety. |
| Ano: 2000 |
URL: http://purl.umn.edu/21883 |
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| Nelson, Carl H.; Ndjeunga, Jupiter. |
| Mean-variance analysis in the form of risk programming has a long, productive history in agricultural economics research. And risk programming continues to be used despite well known theoretical results that choices based on mean-variance analysis are not consistent with choices based on expected utility maximization. This paper demonstrates that the multivariate distribution of returns used in risk programming must be elliptically symmetric in order for mean-variance analysis to be consistent with expected utility choices. Then a statistical test for elliptical symmetry is developed and demonstrated. This test enables researchers to determine when data will produce significant differences between risk programming choices and expected utility choices. |
| Tipo: Working or Discussion Paper |
Palavras-chave: Risk and Uncertainty. |
| Ano: 1997 |
URL: http://purl.umn.edu/14795 |
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