Hostname: page-component-586b7cd67f-t7czq Total loading time: 0 Render date: 2024-11-28T19:57:08.800Z Has data issue: false hasContentIssue false
  • English
  • Français

An Agro-Economic Analysis of Field Trials from a Farming Systems Research Perspective: Weed Control in Rainfed Lowland Rice in Senegal

Published online by Cambridge University Press:  03 October 2008

Joshua L. Posner  and
Eric W. Crawford
Joshua L. Posner
Affiliation:
University of Wisconsin, Madison, Wisconsin, USA
Eric W. Crawford
Affiliation:
Michigan State University, East Lansing, Michigan, USA
Get access Rights & Permissions [Opens in a new window]

Summary

Using a farming systems approach, a multidisciplinary team in southern Senegal examined three strategies for weed control in rainfed lowland rice: use of herbicide; replacement of broadcast seeding by row seeding with mechanical seeders; and transplanting compared with direct seeding of rice. Thorough evaluation of the agronomic and economic benefits of these strategies for farmers was facilitated by supplementing the standard analysis of on-farm trials with multivariate analysis incorporating agronomic survey data to explain treatment effects better, and by considering technical and economic effects throughout the farming system. The agro-economic analysis led the team to conclude that: where soils are productive, herbicide use is a profitable investment; when converting to direct seeding, farmers should facilitate weeding by seeding in rows with a mechanical seeder; and transplanting should not be discouraged in areas where it is still feasible, since it is less time-consuming, fits in better with other farm activities and requires less fertilizer.

Type
Research Article
Information
Experimental Agriculture , Volume 27 , Issue 3 , July 1991 , pp. 231 - 241
Copyright
Copyright © Cambridge University Press 1991

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Beye, G., Touré, M. & Arial, G. (1979). Etude de la chimie des sols submergés de la Basse Casamance en relation avec le développement et la nutrition minérale du riz. Agronomic Tropicale 34:271–300.Google Scholar
Diallo, S. (1984). Actes de la Réunion de Bilan Orientation des Programmes Riz de l' ISRA. Ziguinchor, 28–29 mars, 1984. Dakar, Senegal: ISRA, Départment de Recherches sur les Productions Végétales.Google Scholar
Ganry, F. & Pocthier, G. (1982). Rendement et économic de l'azote en sols gris argileux de Moyenne Casamance. Bambey, Senegal: ISRA, Centre National de Recherches Agricoles.Google Scholar
Jolly, C., Kamuanga, M., Sall, S. & Posner, J. (1988). Farm Level Cereal Situation in Lower Casamance: Results of a Field Study. MSU International Development Papers Reprint No. 27. East Lansing, MI: Department of Agricultural Economics, Michigan State University.Google Scholar
Posner, J. L., Lô, M., Demay, G. & Faye, A. (1988). Evaluation des variétés de riz en milieu paysan: Expériences en Basse Casamance, Sénégal (1982–85). Dakar, Senegal: ISRA, Département de Recherches sur les Systèmes Agraire et I'Economie Agricole.Google Scholar
Posner, J. L., Kamuanga, M. & Lô, M. (1991). Lowland Cropping Systems in the Lower Casamance of Senegal: Results of Four Years of Agronomic Research (1982–85). MSU International Development Papers Reprint No. 30. East Lansing, MI: Department of Agricultural Economics, Michigan State University. (In press.)Google Scholar
Posner, J. & Crawford, E. (1989). Agro-economic analysis of field trials from a farming systems research perspective—fertilizer trials with lowland rice, maize and peanuts, Ziguinchor, Senegal. Staff Paper No. 89–80. East Lansing, MI: Department of Agricultural Economics, Michigan State University.Google Scholar
Posner, J. L. (1988.) A contribution to agronomic knowledge of the Lower Casamance (Bibliographic Synthesis). MSU International Development Papers Reprint No. 17. East Lansing, MI: Department of Agricultural Economics, Michigan State University.Google Scholar
Posner, J. L., Kamuanga, M. & Sall, S. (1985). Production systems in Lower Casamance and strategies adopted by farmers for the water shortage. In Appropriate Technologies for Farmers in Semi-Arid West Africa (Eds Ohm, H. and Nagy, J.). West Lafayette, Indiana: Purdue University.Google Scholar
Sonko, L. (1985). Traction animale et travail animal au Sénégal: Le cas du Nord-Est de la Basse Casamance. Paper presented at the Seminaire Relations Agriculture Elevage, 10–13 September 1985, Department Systemes Agraires, CIRAD, Montpellier, France.Google Scholar