P. A. Sanchez (auth.), Fergus L. Sinclair (eds.)'s Agroforestry: Science, Policy and Practice: Selected papers PDF

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

ISBN-10: 9048146100

ISBN-13: 9789048146109

ISBN-10: 9401706816

ISBN-13: 9789401706810

Agroforestry examine is imperative to constructing equipment for the sustainable use of usual renewable assets, evolving to deal with the wishes of the arrival century. it truly is now essential to consolidate the medical earnings now being made in process-oriented examine and to advance a coverage framework to motivate the adoption of sustainable land use practices. Agroforestry performs an immense function in protecting woodland assets, lowering the necessity for deforestation. extra, if `forest' is commonly outlined as tree conceal, agroforestry also will raise the share of woody biomass in farming landscapes.
The papers chosen for inclusion in Agroforestry: technological know-how, Policy,and Practice identify agroforestry as an interdisciplinary technological know-how all for the sensible significant of helping farmers, wooded area dwellers and landscape-level planners to accomplish sustainable meals, gas and trees construction 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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The pantropical spread of the leucaena psyllid (HeteropsyUa cubana) from its center of origin in the Caribbean to Hawaii in 1984, then to Asia and now in Africa since 1992 has caused major damage to Leucaena leucocephala [Vandenbeldt and Napompeth, 1992]. This, however, should not be viewed as an exceptional event. Exotic species leave their predators behind when they are moved away from their center of origin, but eventually predators catch up with them or new ones arise. MUltipurpose tree species should not be expected to be pest or disease proof.

10. Proven [Wilson, 1990; ICRAF, 1993: 58-60]. 45 Appendix 1 (Continued) Hypothesis Status and references 11. Roots of N-fixing trees have more nodules when in close contact with roots of non N-fixing plants. This may lead to direct N transfer to the non-nodulating plant. 11. Not proven. Highly controversial. 12. Annual crops are unable to use all water stored in the soil. 12. , in press]. 13. The combination of trees and crops greatly enhances rainfall water use. 13. , in press]. 14. Because agroforestry systems use more water than annual cropping systems, they should increase primary productivity.

Particular care needs to be given to experimental design in agroforestry to avoid root interference between experimental plots. • Process-oriented research on silvopastoral systems remains a major gap in work among the types of agroforestry systems. • The processes responsible for major crop-yield increases in promising sequential systems and their socioeconomic implications must be thoroughly understood and quantified before they are recommended for wide-scale adoption. Complexity • Process-oriented research on socioeconomic complexities should be strengthened, particularly research on how households or communities react to policy environments.

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Agroforestry: Science, Policy and Practice: Selected papers from the agroforestry sessions of the IUFRO 20th World Congress, Tampere, Finland, 6–12 August 1995 by P. A. Sanchez (auth.), Fergus L. Sinclair (eds.)


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