By P. A. Sanchez (auth.), Fergus L. Sinclair (eds.)

Agroforestry learn is primary to constructing tools for the sustainable use of average renewable assets, evolving to handle the desires of the arriving century. it really is now essential to consolidate the clinical profits now being made in process-oriented learn and to boost a coverage framework to inspire the adoption of sustainable land use practices. Agroforestry performs a big position in protecting woodland assets, decreasing the necessity for deforestation. additional, if `forest' is greatly outlined as tree conceal, agroforestry also will raise the share of woody biomass in farming landscapes.
The papers chosen for inclusion in Agroforestry: technology, Policy,and Practice determine agroforestry as an interdisciplinary technology inquisitive about the sensible principal of aiding farmers, wooded area dwellers and landscape-level planners to accomplish sustainable foodstuff, gas and bushes creation into the twenty first century.

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Extra resources for Agroforestry: Science, Policy and Practice: Selected papers from the agroforestry sessions of the IUFRO 20th World Congress, Tampere, Finland, 6–12 August 1995

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Subsoil carbon contents generally do not decrease upon deforestation and can actually increase with new land-use systems that bring extensive root systems to depths that were previously essentially devoid of roots. This is the case with the introduction of aluminum-tolerant grasses in the Llanos Orientales of Colombia. Fisher et aI. [1994] report that grass-legume pastures of Andropogon gayanus-Stylosanthes capitata and Brachiaria humidicola-Arachis pintoy sequestered an additional 34 t C ha- 1 in the subsoil layer at 40-100 cm depth in 9 to 13 years of grazing.

Appendix 3 Summary of ICRAF's current domestication activities. Irvingia gabonensis Uapaca kirkiana Inga edulls Selected cultivar strategy , Bactris gaslpaes Zizyphus mauritiana Melia volkensii Grevillea robusta Markhamia lutea Calliandra calothyrsus Balanites aegiptlca Prosopis afrlcana Gliricidia sepium Sesbania sesban t Population and Breeding Strategy 47 References Akyeampong E, Duguma B, Heineman AM, Kamara CS, Kiepe P, Kwesiga F, Ong CK, Otieno HK and Rao MR (1995) A synthesis of ICRAF's research on alley cropping.

30 Tenure. Secure tenure, be it land tenure or tree tenure, is a prerequisite for planting trees and investing in agroforestry. Farmers are understandably reluctant to plant many trees if they are unsure about long-term access to their land. , 1994]. There are often perverse policies related to land tenure; for example, no land titling without first deforesting the land; no rights to services when the land is classified as forest reserve even though farmers have used it for many generations [Sanchez, 1994b; Vosti and Witcover, in press].

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