Economics of Grass Strips Used as Sediment Filters in the Riparian Zones of Lake Victoria, Uganda
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Date
2012
Journal Title
Journal ISSN
Volume Title
Publisher
Agroecology and Sustainable Food Systems
Abstract
Land-use change in the riparian zones has lead to flow of sediments
and nutrients into Lake Victoria. Using net present value (NPV) and
sensitivity analysis techniques, economic viability of Paspalum,
lemon, and elephant grasses as sediment filters under maize production
are determined. Findings reveal that grass strips in maize
production generates NPVs of 1,620 Cha−1, 1,736 Cha−1, and
1,766 Cha−1 for maize + Paspalum, maize + lemon and maize +
elephant grass, respectively, at 5% discount rate. Sensitivity analyses
show, NPVs are stable to varying discount rates but not to
yield declines in maize and grasses. Overall, integrated land use to
reduce sediment and nutrient fluxes is a more acceptable solution
to land-constrained farmers.
Description
Keywords
Net present value, Grass strips, Soil erosion, Lake Victoria
Citation
Basil Mugonola , Didas Kimaro , Moses Isabirye , Jozef Deckers , Jean Poesen , Joshua Wanyama & Erik Mathijs (2013) Economics of Grass Strips Used as Sediment Filters in the Riparian Zones of Lake Victoria, Uganda, Agroecology and Sustainable Food Systems, 37:9, 1040-1062, DOI: 10.1080/21683565.2013.820250