Collecting meaningful data on labour use in onfarm trials in subSaharan Africa

Loading...
Thumbnail Image

Date Issued

Date Online

2008-10-03

Language

en

Review Status

Peer Review

Access Rights

Limited Access Limited Access

Share

Citation

Spencer, D. (1993). Collecting meaningful data on labour use in on-farm trials in sub-Saharan Africa. Experimental Agriculture, 29(1), 39-46.

Permanent link to cite or share this item

External link to download this item

Abstract/Description

In order to measure the effects of new agricultural technologies on labour productivity in sub-Saharan Africa, on-farm trials are usually conducted using small plots. Farmers who keep no records have to be interviewed frequently to minimize the effect of memory loss on the accuracy of the data collected. In this paper, results are reported of experiments in the forest zone of Nigeria and the semi-arid Sahel of Niger. They show that if researchers can take steps to fix events in the memory of farmers, accurate labour use data can be collected in interviews as long as three months after the events being recalled. A range of plot sizes, with a minimum of 350 m2 in the forest zone, needs to be used to measure accurately labour use per hectare and to take into account the effect of economies of size on crop production.

Countries
Organizations Affiliated to the Authors