A conceptual approach for measuring farmers’ attitudes to integrated soil fertility management in Kenya
2015
Lagerkvist, Carl Johan | Shikuku, Kelvin | Okello, Julius | Karanja, Nancy | Ackello-Ogutu, C. (Christopher)
A sustainable increase in agricultural productivity is essential in assuring food security in developing countries. Low soil fertility is a major contributing factor to the current vicious cycle of low agricultural productivity and inadequate livelihoods among smallholder farmers. Integrated soil fertility management (ISFM) is one way of achieving sustainable agricultural development, but improving soil fertility through ISFM requires interventions that match the behavioural inclinations of farmers and their decision making. Using survey data on 125 commercial peri-urban farmers growing kale (Brassica oleracea) around Nairobi, Kenya, this study examined two conceptual approaches for measuring ISFM attitudes. A Rasch model, where the odds ratio for engaging in an ISFM practice is given by the difference between farmers’ attitude and the difficulty of the practice in terms of behavioural cost, identified ISFM attitudes as a unidimensional concept. However, assessing attitudes based on a standard valence method raised problems of construct validity. Accounting for behavioural costs as determinants of ISFM, in addition to other pecuniary costs, may improve our understanding of how farmers deal with complex choices in the ISFM context. Our findings suggest that high behavioural costs in relation to use of human faeces as manure, use of crop residues and transport impede adoption of ISFM practices vital to increased productivity. These findings can be used to develop ISFM communications and improve the efficacy of different interventions intended to increase potential uptake of ISFM practices.
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