Articles | Volume 6, issue 3
Solid Earth, 6, 1063–1073, 2015
https://doi.org/10.5194/se-6-1063-2015
Solid Earth, 6, 1063–1073, 2015
https://doi.org/10.5194/se-6-1063-2015

Research article 17 Sep 2015

Research article | 17 Sep 2015

Precision of farmer-based fertility ratings and soil organic carbon for crop production on a Ferralsol

P. Musinguzi et al.

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Short summary
This study showed that resource-poor smallholder farmers can ably rate fields for soil fertility as poor or good but had difficulties in identifying medium-fertility fields. Rating with SOC improved precision to rate medium-fertility fields. SOC and clay content explained the highest yield variances in heterogeneous smallholder farms. A combination of SOC and farmers' field experiences can be affordable approaches to guide fertility management and fertilizer application.