Agricultural production in East Africa : stagnation, investment, and poverty / Randall A. Bluffstone and Gunnar Köhlin -- Determinants of sustainable land management investments -- Stimulating smallholder investments in sustainable land management : overcoming market, policy, and institutional challenges / Bekele Shiferaw and Julius Okello -- The role of social capital in sustainable development : an analysis of soil conservation in rural Kenya / Wilfred Nyangena -- Tenure security and incentives for sustainable land management : a case study from Kenya / Jane Kabubo-Mariara and Vincent Linderhof -- The effect of risk on investments -- Risk preferences and technology adoption : case studies from Ethiopian highlands / Mahmud Yesuf and Hailemariam Teklewold -- Fertilizer use by smallholder households in northern Ethiopia : does risk aversion matter? / Fitsum Hagos and Stein Holden -- Crop biodiversity and the management of production risk on degraded lands : some evidence from the highlands of Ethiopia / Salvatore di Falco and Jean-Paul Chavas -- Returns to sustainable land management investments -- Where does investment on sustainable land management technology work? : empirical evidence from the Ethiopian highlands / Menale Kassie -- Soil conservation and small scale food production in highland Ethiopia : a stochastic metafrontier approach / Haileselassie Medhin and Gunnar Köhlin -- Public policies and sustainable land management investments -- Policy instruments to reduce downstream externalities of soil erosion and surface run-off / Anders Ekbom -- Incentives for sustainable land management in East African countries / Berhanu Gebremedhin -- Conclusions and key lessons / Randall A. Bluffstone and Gunnar Köhlin.