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| Registros recuperados: 16 | |
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| Badstue, Lone B.; Bellon, Mauricio R.; Juarez, Xochitl; Manuel, Irma; Solano, Ana M.. |
| This paper explores social arrangements associated with seed transactions among small-scale maize farmers in the Central Valleys of Oaxaca, Mexico, a centre of crop genetic diversity. A formal seed distribution system has yet to develop in the region and when seed loss occurs, farmers are faced with costs and difficulties identifying, locating, and obtaining seed of desired varieties. For these reasons, it was hypothesized that there were strong incentives for collective action among farmers to facilitate seed supply. The study found, however, no evidence of collective action with regards to seed supply in the three study communities-San Pablo Huitzo, San Lorenzo Albarradas, Santa Ana Zegache. Instead, farmers acquired seed using a variety of networks of... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Farm Management. |
| Ano: 2003 |
URL: http://purl.umn.edu/46551 |
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| Gomez, Jose Alfonso Aguirre; Bellon, Mauricio R.; Smale, Melinda. |
| Four environments with contrasting potential for agricultural productivity and infrastructure development were identified in Guanajuato State, Mexico, to test hypotheses about the relationship of maize biological diversity to the region's potential for agricultural productivity and infrastructure development. Samples of all types of maize grown by a random sample of farmers were collected from each environment. The maize samples were classified by race, racial mixture, or type of 'creolized' or improved variety. Landraces were the dominant maize class in all four environments; the use of improved varieties was negligible. Several diversity indices were calculated, and no statistically significant differences were apparent between the environments with the... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Crop Production/Industries. |
| Ano: 1998 |
URL: http://purl.umn.edu/7671 |
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| Bellon, Mauricio R.; Gambara, Peter; Gatsi, Tendai; MacHemedze, Timothy E.; Maminimini, Obert; Waddington, Stephen R.. |
| Soil infertility is a major constraint to food production in the communal areas of Zimbabwe. Smallholders in the region recognize the problems of low soil fertility and have devised ways of coping with them. This study describes the use of farmers taxonomies of themselves and their soils to identify and understand the options they have, and the constraints they face in managing poor soil fertility in Chihota, a sub-humid communal area of north central Zimbabwe. It is part of an effort by a group of agricultural researchers and extensionists working on improved soil fertility technologies, to better integrate their work with farmers in order to expose the latter to promising technologies, get feedback on the technologies merits and feasibility, and help... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Participatory methods; Soil fertility; Local taxonomies; Smallholders; Zimbabwe; Farm Management; Land Economics/Use. |
| Ano: 1999 |
URL: http://purl.umn.edu/7677 |
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| Badstue, Lone B.; Bellon, Mauricio R.; Berthaud, Julien; Ramirez, Alejandro; Flores, Dagoberto; Juarez, Xochitl; Ramirez, Fabiola. |
| This project explored the possible role of collective action among small-scale farmers in managing and maintaining genetic resources in a center of crop diversity. It focused on the local institutions that ensure the supply of seed of diverse maize landraces to small-scale farmers in the Central Valleys of Oaxaca, Mexico. The key hypothesis was that the medium-to-long-term supply of a diverse set of varieties to any individual smallscale maize farmer depends on an agreement among a group of farmers to manage and supply the seed of these landraces to each other, if the need arises, and that this constitutes a form of collective action. Six communities were studied, three of them indepth. Methodologies used included in-depth semi-structured interviews with... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Maize; Small-scale farmers; Informal seed systems; Genetic resources; Mexico; Collective action; Crop Production/Industries; Resource /Energy Economics and Policy. |
| Ano: 2005 |
URL: http://purl.umn.edu/50067 |
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| Bellon, Mauricio R.. |
| This manual presents methods that enable agricultural scientist and farmers to evaluate technologies/practices jointly. The methods are specifically designed for participatory research on germplasm and soil fertility technologies, and they are illustrated with actual examples from three research projects. The manual begins by reviewing conceptual issues that are important in participatory research and presents information to assist researchers in selecting research sites and fieldwork participants. Next, the manual describes the rationale and associated methods for each major activity in farmer participatory research: diagnosing farmers' conditions, evaluating current and new technologies/practices, and assessing their impact. Goals, procedures,... |
| Tipo: Book Chapter |
Palavras-chave: Research and Development/Tech Change/Emerging Technologies; Research Methods/ Statistical Methods. |
| Ano: 2001 |
URL: http://purl.umn.edu/23717 |
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| Smale, Melinda; Bellon, Mauricio R.; Gomez, Jose Alfonso Aguirre. |
| This study uses an approach derived from models of the private and public characteristics of goods to illustrate (1) the overriding importance of variety attributes in farmers' decisions to allocate area among varieties of maize landraces and (2) the significance of farmers' perceptions of changes in the maize germplasm base in the surrounding community in their choices. Diversity indices and the concept of 'scale', as understood in ecology, are adapted and employed to test hypotheses empirically. Though a case study of maize farmers in Southeastern Guanajuato, the research raises methodological issues for models of variety choice and has policy implications for the potential to conserve maize genetic diversity on farms in Mexico. |
| Tipo: Working or Discussion Paper |
Palavras-chave: Crop Production/Industries. |
| Ano: 1999 |
URL: http://purl.umn.edu/7669 |
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| Bellon, Mauricio R.; Smale, Melinda; Aguirre, Alfonso; Taba, Suketoshi; Aragon, Flavio; Diaz, Jaime; Castro, Humberto. |
| Identifying the appropriate germplasm to be improved is a key component of any participatory breeding effort because of its implications for impacts on social welfare and genetic diversity. This paper describes a method developed to select a subset of 17 populations for a participatory breeding project from a set of 152 maize landraces. The larger set of landraces was collected in order to characterize, for conservation purposes, the maize diversity present in the Central Valleys of Oaxaca, Mexico. The method combines data representing the perspectives of both men and women members of farm households and those of genetic resources specialists, including professional plant breeders, gene bank managers, and social scientists. The different perspectives... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Mexico; Oaxaca; Maize; Zea mays; Land race; Germplasm conservation; Plant breeding; Selecting; Innovation adoption; Social welfare; Welfare economics; On farm research; Participatory research; Farm Management. |
| Ano: 2000 |
URL: http://purl.umn.edu/46524 |
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| Bellon, Mauricio R.; Reeves, Jane. |
| Although participatory plant breeding (PPB) is gaining greater acceptance worldwide, the techniques needed to analyze the data from participatory methodologies in the context of plant breeding are still not well known or understood. Scientists from different disciplines and cropping backgrounds, working in international research centers and universities, discussed and exchanged methods and ideas at a workshop on the quantitative analysis of data from participatory methods in plant breeding. The papers in this volume address the three themes of the workshop: designing and analyzing joint experiments involving variety evaluation by farmers; identifying and analyzing farmers' evaluations of crop characteristics and varieties; and dealing with social... |
| Tipo: Book Chapter |
Palavras-chave: Research Methods/ Statistical Methods. |
| Ano: 2002 |
URL: http://purl.umn.edu/23718 |
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| Bellon, Mauricio R.. |
| Interest is increasing worldwide in on-farm conservation as a component of a strategy to conserve crop genetic resources. On-farm conservation may require outside support to small-scale farmers in areas of crop domestication and diversity. This paper argues that crop infraspecific diversity maintained by farming households in these areas results from the interplay between demand and supply for this diversity (i.e., its loss may be demand- or supply-related). In the first instance, interventions should be aimed at increasing the value of crop diversity for farmers or decreasing the farm-level opportunity costs of maintaining diversity. In the second instance, interventions should decrease the transaction costs of accessing crop diversity. It may be... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Crop Production/Industries. |
| Ano: 2001 |
URL: http://purl.umn.edu/7666 |
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| Registros recuperados: 16 | |
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