What role can planted fallows play in the humid and sub-humid zone of West and Central Africa?

Nutrient Cycling in Agroecosystems

Volumn 76, Issue 2-3, 2006, Pages 297-318

  Hauser, Stefan ^a,c   Nolte, Christian ^a   Carsky, Robert J ^b  

^a INTERNATIONAL INSTITUTE OF TROPICAL AGRICULTURE   (Cameroon)

^b AFRICA RICE CENTER AFRICARICE   (Côte d’Ivoire)

^c LW Lambourn and Co   (United Kingdom)

Author keywords

Crop yield response; Herbaceous; Leguminous fallow; Soil fertility replenishment; Tree based

Indexed keywords

AGRICULTURAL MANAGEMENT; AGRICULTURAL TECHNOLOGY; BIOMASS; CROP YIELD; FALLOW; HUMID TROPICS; SHIFTING CULTIVATION; SOIL FERTILITY; YIELD RESPONSE;

AFRICA; CENTRAL AFRICA; SUB-SAHARAN AFRICA; WEST AFRICA;

ZEA MAYS;

EID: 33845400154     PISSN: 13851314     EISSN: 15730867     Source Type: Journal    
DOI: 10.1007/s10705-005-5630-4     Document Type: Article

References (150)

1. Achard R. 1998. Place du bananier dans les associacions agroforestiéres. In: Duguma B. and Mallet B. (eds), Regional Symposium on Agroforestry Research and Development in the Humid Lowlands of West and Central Africa. Proceedings of a Symposium Held 4-7 December 1995, Yaoundé, Cameroon, pp.175-179.
2. Adeola A.O. and Ogunwale A.B. 1995. The effect of leguminous hedgerows on the yield of maize planted on inclines in Ilesha, Nigeria. In: Kang B.T., Osiname O.A. and Larbi A. (eds), Alley Farming Research and Development. Alley Farming Network for Tropical Africa, Ibadan, Nigeria, pp. 345-347.
3. Adesina A.A. and Chianu J. 2002. Farmers' use and adoption of alley farming in Nigeria. In: Barret C.B., Place F. and Aboud A.A. (eds), Natural Resources Management in African Agriculture. Understanding and Improving current Practices. CABI Publishing, Wallingford, UK, pp. 51-64.
4. Adesina A.A., Mbila D., Nkamleu G.B. and Endamana D. 2000. Econometric analysis of the determinants of adoption of alley farming by farmers in the forest zone of southwest Cameroon. Agr. Ecosys. Environ. 80: 255-265.
5. Adejuyigbe C.O., Tian G. and Adeoye G.O. 1999. Soil microarthropod populations under natural and planted fallows in southwestern Nigeria. Agroforest. Syst. 47: 263-272.
6. Aihou K. 1995. Alley farming trials on terre de barre soils in Southern Bénin Republic. In: Kang B.T., Osiname O.A. and Larbi A. (eds), Alley Farming Research and Development. Alley Farming Network for Tropical Africa, Ibadan, Nigeria, pp. 255-260.
7. Aihou K. and Adomou M. 2000. Contibution du phosphore a l'amélioration de l'assimilation de l'azote par le mais en rotation avec le Mucuna et le niebé. In: Carsky R.J., Eteka A.C., Keatinge J.H.D. and Manyong V.M. (eds), Cover crops for natural resource management in West Africa. International Institute of Tropical Agriculture, Ibadan, Nigeria, pp. 14-22.
8. Aihou K., Sanginga N., Vanlauwe B., Lyasse O., Diels J. and Merckx R. 1999. Alley cropping in the moist savanna of West-Africa: I. Restoration and maintenance of soil fertility on 'terre de barre' soils of Bénin Republic. Agroforest. Syst. 42: 213-227.
9. Akakpo C., Amadji F. and Carsky R.J. 2000. Integration du Mucuna dans les systemes culturaux du sud Bénin. In: Carsky R.J., Eteka A.C., Keatinge J.H.D. and Manyong V.M. (eds), Cover crops for natural resource management in West Africa. International Institute of Tropical Agriculture, Ibadan, Nigeria, pp. 175-184.
10. Akinnifesi F.K., Kang B.T., Sanginga N. and Tijani-Eniola H. 1997. Nitrogen use efficiency and N-competition between Leucaena hedgerows and maize in alley cropping system. Nutr. Cycl. Agroecosys. 47: 71-80.
11. Akobundu I.O., Ekeleme F. and Agyakwa C.W. 1995. Effect of alley farming on weed infestation and floral composition. In: Kang B.T., Osiname O.A. and Larbi A. (eds), Alley Farming Research and Development. Alley Farming Network for Tropical Africa, Ibadan, Nigeria, pp. 137-143.
12. Akobundu I.O., Isichei A.O., Meregini A.O., Ekeleme F., Agyakwa C.W., Tucker E.S. and Mulongoy K. 1993. An analysis of vegetation as a resource in south-eastern Nigeria. In: Mulongoy K. and Merckx R. (eds), Soil Organic Matter Dynamics and Sustainability of Tropical Agriculture. John Wiley & Sons, Chichester, UK, pp. 345-350.
13. Akonde T.P., Lame B. and Kummerer E. 1989. Adoption of alley cropping in the province of Atlantique, Bénin. In: Kang B.T. and Reynolds L. (eds), Alley Farming in the Humid and Subhumid Tropics, Ibadan, Nigeria, 1987. IDRC, Ottawa, Canada, pp. 141-142.
14. Akonde T.P., Leihner D.E. and Kang B.T. 1995. Response of maize and cassava to potassium fertilization and alley cropping with Leucaena leucocephala and Acacia auriculiformis. In: Kang B.T., Osiname O.A. and Larbi A. (eds), Alley Farming Research and Development. Alley Farming Network for Tropical Africa, Ibadan, Nigeria, pp. 248-254.
15. Akonde T.P., Leihner D.E. and Steinmüller N. 1996. Alley cropping on an Ultisol in subhumid Bénin. Part 1: Long-term effect on maize, cassava and tree productivity. Agroforest. Syst. 34: 1-12.
16. Alegre J.C., Rao M.R., Arevalo L.A., Guzman W. and Faminov M.D. 2000. Planted tree fallows for improving land productivity and reducing deforestation in the humid tropics of Peru. Transcript of a Poster Presented at the Annual ASA-Meeting, Minneapolis, 5-9. November 2000, Minneapolis, USA.
17. Ambassa-Kiki R. and Babalola O. 2000. Jachères ameliorées et restauration de la fertilité d'un sol ferrallitique du Cameroun central. In: Floret C. and Pontanier R. (eds), La jachère en Afrique tropicale. John Libbey, Eurotext, Paris, pp. 587-593.
18. Asawalam D.O. 1997. Earthworm Activity and Nutrient Cycling in Agricultural Systems in a Humid Tropical Environment. Unpublished Ph.D. thesis, Department of Soil Science. Nsukka, University of Nigeria, 250 pp.
19. Asibuo J.Y. and Osei-Bonsu P. 2000. Influence of leguminous crops and fertilizer N on maize in the forest-savanna transition zone of Ghana. In: Carsky R.J., Eteka A.C., Keatinge J.H.D. and Manyong V.M. (eds), Cover Crops for Natural Resource Management in West Africa. International Institute of Tropical Agriculture, Ibadan, Nigeria, pp. 40-46.
20. Balle P., Gauthier L., Gnahoua G.M., Mallet B., Olivier R. and Peltier R. 1998. Peut-on concilier production de bois et régénération de la fertilité dans les jachères de zone Guinnée? L'experience d'Oume en basse Côte d'Ivoire. In: Duguma B. and Mallet B. (eds), Regional Symposium on Agroforestry Research and Development in the Humid Lowlands of West and Central Africa. Proceedings of a symposium held 4-7 December 1995, Yaoundé, Cameroon, pp. 181-201.
21. Banful A., Dzietror A., Ofori I. and Hemeng O.B. 2000. Yield of plantain alley cropped with Leucaena leucocephala and Flemingia macrophylla in Kumasi, Ghana. Agroforest Syst. 49: 189-199.
22. Becker M. and Johnson D.E. 1998. Legumes as dry season fallow in upland rice-based systems of West Africa. Biol. Fertil. Soils 27: 358-367.
23. Becker M., Johnson D.E. and Segda Z.J. 1998. The role of legume fallows in intensified upland rice-based systems of West Africa. In: Carsky R.J., Eteka A.C., Keatinge J.H.D. and Manyong V.M. (eds), Cover Crops for Natural Resource Management in West Africa. International Institute of Tropical Agriculture, Ibadan, Nigeria, pp. 85-106.
24. Beets W. 1990. Raising and Sustaining Productivity of Smallholder Farming Systems in the Tropics. AgBe Publishing, Alkmaar, The Netherlands.
25. Böhringer A. and Leihner D.E. 1997. A comparison of alley cropping and block planting system in sub-humid Bénin. Agroforest. Syst. 35: 117-130.
26. Brussaard L., Hauser S. and Tian G. 1993. Soil faunal activity in relation to the sustainability of agricultural systems in the humid tropics. In: Mulongoy K. and Merckx R. (eds), Soil Organic Matter Dynamics and Sustainability of Tropical Agriculture. John Wiley & Sons, Chichester, UK, pp. 241-256.
27. Buresh R.J. and Tian G. 1998. Soil improvement by trees in sub-saharan Africa. Agroforest. Syst. 38: 51-76.
28. Büttner U. and Hauser S. 2003. Farmers' nutrient management practices in indigenous cropping systems in southern Cameroon. Agr. Ecosys. Environ. 100: 103-110.
29. Carsky R.J., Oyewole B. and Tian G. 1999. Integrated soil management for the savanna zone of W. Africa: legume rotation and fertilizer N. Nutr. Cycl. Agroecosys. 55: 95-105.
30. Carsky R.J., Tarawali S.A., Becker M., Chikoye D., Tian G. and Sanginga N. 1998. Mucuna - herbaceous cover legume with potential for multiple uses. International Institute of Tropical Agriculture, Ibadan, Nigeria.
31. Charpentier H., Doumbia S., Coulibaly Z. and Zana O. 1999. Fixation de l'agriculture au nord et au centre de la Côte d'Ivoire: quel nouveaux systemes de culture? Agr. Dévelop. 21: 4-70.
32. Chen Y.S., Kang B.T. and Caveness F.E. 1989. Alley cropping vegetable crops with Leucaena in southern Nigeria. HortScience 24: 839-840.
33. Chikoye D., Akobundu I.O. and Ekeleme F. 2000. Long term effects of Pueraria phaseoloides and Leucaena leucocephala fallow on weed growth and composition, and on crop yield of cassava intercropped with maize. In: Floret C. and Pontanier R. (eds), La jachère en Afrique tropical. John Libbey, Eurotext, Paris, France, pp. 603-610.
34. Cobbina J. 1998. Soil fertility changes under Albizia, Casuarina and Senna woodlots in the humid zone of Ghana and their influence on succeeding crop. In: Duguma B. and Mallet B. (eds), Regional Symposium on Agroforestry Research and Development in the Humid Lowlands of West and Central Africa. Proceedings of a symposium held 4-7 December 1995, Yaoundé, Cameroon, pp. 203-207.
35. Coe R. 1994. Through the looking glass: ten common problems in alley-cropping research. Agroforest. Today 6: 9-11.
36. Danso A.A. and Morgan P. 1993a. Alley cropping maize (Zea mays var. Jeka) with cassia (Cassia siamea) in The Gambia: crop production and soil fertility. Agroforest. Syst. 21: 133-146.
37. Danso A. A. and Morgan P. 1993b. Alley cropping rice (Oryza sativa var. Barafita) with cassia (Cassia siamea): soil fertility and crop production. Agroforest. Syst. 21: 147-158.
38. De Rouw A. 1995. The fallow period as a weed-break in shifting cultivation (tropical wet forest). Agr. Ecosys. Environ. 54: 34-43.
39. Dogbe W. 1998. Green-manure crops for sustainable agriculture in the inland vallery of northern Ghana. In: Buckless D., Eteka A., Osiname O., Galiba M. and Galiano G. (eds), Cover Crops in West Africa Contributing to Sustainable Agriculture. International Development Reaserch Centre, Ottowa, Canada, pp. 213-216.
40. Duguma B. and Tonye J. 1994. Screening of multipurpose tree and shrub species for agroforestry in the humid lowlands of Cameroon. Forest Ecol. Manag. 64: 135-143.
41. Dvoràk K.A. 1991. Methods of on-farm, diagnostic research on adoption potential of alley cropping. Agroforest. Syst. 15: 167-181.
42. Egbe E.A., Nwoboshi L.C., Ladipo D.O. and Swift M.J. 1998. Potential of Millettia thonningii (Schum and Thonn) and Pterocarpus santalinoides (L'Her) for alley cropping at two locations in humid lowlands of West Africa. In: Duguma B. and Mallet B. (eds), Regional Symposium on Agroforestry Research and Development in the Humid Lowlands of West and Central Africa. Proceedings of a Symposium held 4-7 December 1995, Yaoundé, Cameroon, pp. 217-229.
43. Floret C., Roger P. and Georges S. 1993. La jachère en Afrique Tropical. UNESCO, Paris, 86pp.
44. Franzel S. 1999. Socioeconomic factors affecting the adoption potential of improved tree fallows in Africa. Agroforest. Syst. 47: 305-321.
45. Gichuru M.P. and Kang B.T. 1988. Potential woody species for alley cropping on acid soils. Agroforestry Land-Use systems: Proceedings of a Special Session of the American Society of Agronomy, Annual Meeting, Anaheim, California, USA, pp. 85-87.
46. Gockowski J., Tonye J., Baker D., Legg C., Weise S., Ndoumbé M., Tiki-Manga T. and Fouaguégué A. 2004. Characterization and Diagnosis of Farming Systems in the Forest Margins Benchmark of Southern Cameroon. Social Science Working Paper Series No. 1, International Institute of Tropical Agriculture, Ibadan, Nigeria, 67 pp.
47. Grimme H., Juo A.S.R. and Kang B.T. 1983. Nutrient and Water use Efficiency. Annual Report for 1983, International Institute of Tropical Agriculture, Ibadan, Nigeria, pp. 154-156.
48. Guillemin R. 1956. Evolution de l'agriculture autochtone dans les savannes de l'Oubangui. Deuxième partie: L'agriculture Oubanguienne a ses origines. L'Agronomie Tropicale 11: 143-176.
49. Hamadina M.K., Henrot J., Isirimah N.O. and Tariah N.M. 1996. Potential benefits of a leguminous cover crop and a slow decomposing mulch in fallow management on a degraded soil of the humid tropics. In: Neeteson J.J. and Henrot J. (eds), The Role of Plant Residues in Soil Management for Food Production in the Humid Tropics. DLOAB, Haren, The Netherlands, pp. 81-96.
50. Hauser S. 1990. Water and nutrient dynamics under alley cropping vs. monocropping in the humid-subhumid transition zone. 14th International Congress of Soil Science, Kyoto, Japan, Vol. 6, pp. 204-209.
51. Hauser S. 1993a. Root distribution of Dactyladenia (Acioa) barteri and Senna (Cassia) siamea in alley cropping on Ultisol. I. Implication for field experimentation. Agroforest. Syst. 24: 111-121.
52. Hauser S. 1993b. Distribution and activity of earthworms and contribution to nutrient recycling in alley cropping. Biol. Fertil. Soils 15: 16-20.
53. Hauser S. 2002. Volunteer biomass production between multipurpose tree hedgerows after two years of fallow in southern Cameroon. Agroforest. Syst. 55: 139-147.
54. Hauser S. and Kang B.T. 1993. Nutrient dynamics, maize yield and soil organic matter in alley cropping with Leucaena leucocephala. In: Mulongoy K. and Merckx R. (eds), Soil Organic Matter Dynamics and Sustainability of Tropical Agriculture. John Wiley & Sons, Chichester, UK, pp. 215-222.
55. Hauser S. and Gichuru M.P. 1994. Root distribution of Dactyladenia (Acioa) barteri and Senna (Cassia) siamea in alley cropping on Ultisol. II. Impact on water regime and consequences for experimental design. Agroforest. Syst. 26: 9-21.
56. Hauser S. and Asawalam D.O. 1998. Effects of fallow system and cropping frequency upon quantity and composition of earthworm casts. Z. Pflanzenernähr. Bodenk. 161: 23-30.
57. Hauser S. and Nolte C. 2002. Biomass production and N fixation of five Mucuna pruriens varieties and their effect on maize yields in the forest zone of Cameroon. J. Plant Nutri. Soil Sci. 165: 101-109.
58. Hauser S., Ndi J.N. and Hulugalle N.R. 2000a. Yields of maize/cassava intercrops grown with hedgerows of three multipurpose trees on an acid Ultisol of Cameroon. Agroforest. Syst. 49: 111-122.
59. Hauser S., Ndi J.N. and Hulugalle N.R. 2000b. Performance of a maize/cassava intercrop in tilled and no-till Senna spectabilis alley cropping on an Ultisol in southern Cameroon. Agroforest. Syst. 49: 177-188.
60. Hauser S., Henrot J. and Hauser A. 2002. Maize yields in mulched and burned Mucuna pruriens var. utilis and Pueraria phaseoloides relay fallow systems in southern Cameroon. Biol. Agr. Horticul. 20: 243-256.
61. Hauser S., Vanlauwe B., Asawalam D.O. and Norgrove L. 1997. Role of earthworms in traditional and improved low-input agricultural systems in West Africa. In: Brussaard L. and Ferrera-Cerrato R. (eds). Soil Ecology in Sustainable Agricultural Systems. Adv. Agroecol. 1: 113-136.
62. Hauser S., Norgrove L., Duguma B. and Asaah E. 2005. Dry season soil water regime under rotational fallow with alternating Leucaena leucocephala and Gliricidia sepium hedgerows on a southern Cameroonian Ultisol. Agroforest. Syst. 64: 73-82.
63. Henrot J. and Brussaard L. 1997. Abundance, casting activity, and cast quality of earthworms in an acid Ultisol under alley-cropping in the humid tropics. Appl. Soil Ecol. 6: 169-179.
64. Horst W.J., Kühne R. and Kang B.T. 1995. Nutrient use in Leucaena leucocephala and Cajanus cajan in maize / cassava alley cropping on terre de barre, Bénin Republic. In: Kang B.T., Osiname O.A. and Larbi A. (eds), Alley Farming Research and Development. Alley Farming Network for Tropical Africa, Ibadan, Nigeria, pp. 122-136.
65. Hulugalle N.R. 1992. Amelioration of a highly degraded tropical Alfisol by planting I. Changes in soil physical and chemical properties 1989-91. Land Degrad. Rehabil. 3: 141-152.
66. Hulugalle N.R. and Ndi N.J. 1993. Effects of no-tillage and alley cropping on soil properties and crop yields in a Typic Kandiudult of southern Cameroon. Agroforest. Syst. 22: 207-220.
67. Hulugalle N.R. and Ndi N.J. 1994. Changes in soil properties of a newly-cleared Ultisol due to establishment of hedgerow species in alley cropping systems. J. Agr. Sci. Camb. 122: 435-443.
68. Huxley P.A. 1986. Hedgerow intercropping: some ecological and physiological issues. In: Kang B.T. and Reynolds L. (eds), Alley Farming in the Humid and Subhumid Tropics. Ibadan, Nigeria, 1987, Ottawa, Canada, pp. 208-219.
69. Iwuafor E.N.O. and Kumar V. 1995. Alley cropping of maize and L. leucocephala in the Northern Guinea savanna of Nigeria. In: Kang B.T., Osiname O.A. and Larbi A. (eds), Alley Farming Research and Development. Alley Farming Network for Tropical Africa, Ibadan, Nigeria, pp. 304-310.
70. Kang B.T. and Duguma B. 1985. Nitrogen management in alley cropping systems. In: Kang B.T. and van der Heide J. (eds), Nitrogen Management in Farming Systems in the Humid and Subhumid Tropics. Institute for Soil Fertility (IB) Haren, The Netherlands and International Institute of Tropical Agriculture (IITA), Ibadan, Nigeria, pp. 269-284.
71. Kang B.T. and Shannon D.A. 2001. Agroforestry with focus on alley cropping. In: Sustaining Soil Fertility in West Africa. SSSA Special Publication no. 58 Soil Science Society of America, Inc./American Society of Agronomy, Inc., Madison, WI, USA, pp. 197-224.
72. Kang B.T., Wilson G.F. and Sipkens L. 1981. Alley cropping maize (Zea mays L.) and Leucaena (Leucaena leucocephala Lam) in southern Nigeria. Plant Soil 63: 165-179.
73. Kang B.T., Wilson G.F. and Lawson T.L. 1984. Alley Cropping. A Stable Alternative to Shifting Cultivation. International Institute of Tropical Agriculture, Ibadan, Nigeria.
74. Kang B.T., Van Der Kruijs A.C.B.M. and Couper D.C. 1989. Alley cropping for food crop production in the humid and subhumid tropics. In: Kang B.T. and Reynolds L. (eds), Alley farming in the humid and subhumid tropics. Ibadan, Nigeria, 1987, IDRC, Ottawa, Canada, pp. 16-26.
75. Kang B.T., Caveness F.E., Tian G. and Kolawole G.O. 1999. Longterm alley cropping with four hedgerow species on an Alfisol in southwestern Nigeria - effect on crop performance, soil chemical properties and nematode population. Nutr. Cycl. Agroecosyst. 54: 145-155.
76. Kang B.T., Hauser S., Vanlauwe B., Sanginga N. and Atta-Krah A.N. 1995. Alley farming research on high base status soils. In: Kang B.T., Osiname O.A. and Larbi A. (eds), Alley Farming Research and Development. Alley Farming Network for Tropical Africa, Ibadan, Nigeria, pp. 25-39.
77. Kanmenge J. and Degrande A. 2002. From alley cropping to rotational fallow: Farmers' involvement in the development of fallow management techniques in the humid forest zone of Cameroon. Agroforest. Syst. 54: 115-120.
78. Kanmenge J., Duguma B., Henrot J. and Isirimah N.O. 1996. Potential of some indigenous plant species for enhancing soil fertility in short fallow systems of the humid tropics. In: Neeteson J.J. and Henrot J. (eds), The Role of Plant Residues in Soil Management for Food Production in the Humid Tropics. DLO-AB, Haren, The Netherlands, pp. 107-118.
79. Kombiok J.M., Rudat H. and Frey E. 1998. Screening of exotic and local tree species for maize production and soil fertility maintenance in the Guinea savanna zone of Ghana. In: Duguma B. and Mallet B. (eds), Regional Symposium on Agroforestry Research and Development in the Humid Lowlands of West and Central Africa. Proceedings of a Symposium Held 4-7 December 1995, Yaoundé, Cameroon, pp. 249-253.
80. Koudokpon V., Versteeg M., Adegbola P. and Budelman A. 1995. The adoption of hedgerow intercropping by farmers on the Adja Plateau, South Bénin Republic. In: Kang B.T., Osiname O.A. and Larbi A. (eds), Alley Farming Research and Development. Alley Farming Network for Tropical Africa, Ibadan, Nigeria, pp. 483-498.
81. Kouyate Z. and Juo A.S.R. 1998. Effets des engrais verts et des rotations de cultures sur la production des sols au Mali. In: Buckless D., Eteka A., Osiname O., Galiba M. and Galiano G. (eds), Cover Crops in West Africa Contributing to Sustainable Agriculture. International Development Reaserch Centre, Ottowa, Canada, pp. 171-178.
82. Kpomblekou-Ademawou K. 1986. Alley cropping maize with Leucaena leucocephala in southern Togo. In: Kang B.T. and Reynolds L. (eds), Alley Farming in the Humid and Subhumid Tropics, Ibadan, Nigeria, 1987, IDRC, Ottawa, Canada, pp. 139-140.
83. Kühne R. 1993. Wasser- und Nährstoffhaushalt in Mais - Maniok - Anbausystemen mit und ohne Integration von Alleekulturen (Alley cropping) in Süd - Bénin. Universität Hohenheim, Germany.
84. Lal R. 1991. Myths and scientific realities of agroforestry as a strategy for sustainable management for soils in the tropics. Adv. Soil Sci. 15: 91-137.
85. Laudelout H. 1990. La jachère forestière sous les tropiques humides, Unitédes Eaux et Fôrets, Centre de Recherches Forestières de Chimay. Université Catholique de Louvain. Louvain-la-Neuve, Belgique.
86. Lawry S., Stienbarger D. and Jabbar M.A. 1995. Land tenure and the adoption of alley farming in West Africa. In: Kang B.T., Osiname O.A. and Larbi A. (eds), Alley Farming Research and Development. Alley Farming Network for Tropical Africa, Ibadan, Nigeria, pp. 464-471.
87. 15N applications. Agroforest. Syst. 52: 185-197.
88. Leihner D.E., Bernard M., Akonde P., Böhringer A., Ernst-Karle R. and Stahr K. 1993. Development of improved cropping systems for the West African savanna eco-systems. Report of Results (Interim Report 1991-1993) of the Special Research Programme 308 'Adapted Farming in West Africa', University of Hohenheim, Germany, pp. 237-278.
89. Leihner D.E., Doppler W. and Bernard M. 1996. Agroecological on-farm evaluation of selected technologies to improve soil fertility in southern Bénin. Report of Results (Interim Report 1994-1996) of the Special Research Programme 308 'Adapted Farming in West Africa', University of Hohenheim, Germany, pp. 360-409.
90. Liya S.M. 1994. Nitrogen Fixation and Release by Woody Legumes used for Alley Cropping. Unpublished Ph.D. Thesis, Faculty of Agriculture and Forestry, University of Ibadan, Nigeria.
91. Mekonnen K., Buresh R.J. and Jama B. 1997. Root and inorganic nitrogen distributions in sesbania fallow, natural fallow and maize fields. Plant Soil 188: 319-327.
92. Mekonnen K., Buresh R.J., Coe R. and Kipleting K.M. 1999. Root length and nitrate under Sesbania sesban: Vertical and horizontal distribution and variability. Agroforest. Syst. 42: 265-282.
93. Meregini A.O., Okoro E.G. and Kang B.T. 1995. Alley cropping on an Ultisol in Southeastern Nigeria. In: Kang B.T., Osiname O.A. and Larbi A. (eds), Alley Farming Research and Development. Alley Farming Network for Tropical Africa, Ibadan, Nigeria, pp. 282-286.
94. Mertz O. 2002. The relationship between length of fallow and crop yields in shifting cultivation: a rethinking. Agroforest. Syst. 55: 149-159.
95. Mulongoy K. and Van Der Meersch M.K. 1988. Nitrogen contribution by leucaena (Leucaena leucocephala) prunings to maize in an alley cropping system. Biol. Fertil. Soils 6: 282-285.
96. Mulongoy K., Kunda K.N. and Chiang C.N.K. 1993. Effect of alley cropping and fallowing on some soil fertility parameters in southern Nigeria. In: Mulongoy K. and Merckx R. (eds), Soil Organic Matter Dynamics and Sustainability of Tropical Agriculture. John Wiley & Sons, Chichester, UK, pp. 47-55.
97. Naab J.B. and Alhassan A.T. 2001. Effect of crop rotation, fertilizer nitrogen and manure on soil properties and maize yield in northern Ghana. In: Badu-Apraku B., Fakorede M.A.B., Ouedrago M. and Carsky R.J. (eds), Impact, Challenges and Prospects of Maize Research and Development in West and Central Africa. WECAMAN, IITA, Ibadan, Nigeria, pp. 269-280.
98. Ngambeki D.S. 1985. Economic evaluation of alley cropping Leucaena with maize-maize and maize-cowpea in southern Nigeria. Agr. Sys. 17: 243-258.
99. N'Goran A. and N'Guessan Kanga A. 2000. Influence d'un precedent de legumineuse herbacee et d'une jachère courte de deux ans sur la productivite du mais au nord de la Côte-d'Ivoire. In: Floret C. and Pontanier R. (eds), La jachère en Afrique Tropicale. John Libbey, Eurotext, Paris, France, pp. 616-621.
100. Nolte C. and Hauser S. (submitted) Natural fallows in the humid zone of West and Central Africa: their biomass production, nutrient accumulation and nutrient budget.
101. Nolte C., Tiki-Manga T., Badjel-Badjel S., Gockowski J., Hauser S. and Weise S.F. 2003. Effects of calliandra planting pattern on biomass production and nutrient accumulation in planted fallows of southern Cameroon. Forest Ecol. Manag. 179: 535-545.
102. Nolte C., Tiki-Manga T., Badjel-Badjel S., Gockowski J. and Hauser S. 2005. Groundnut, maize and cassava yields in mixed-food crop fields after calliandra tree fallow in southern Cameroon. Exp. Agr. 41: 21-37.
103. Nye P.H. and Greenland D.J. 1960. The Soil Under Shifting Cultivation. Commonwealth Agric. Bureaux, Harpenden, UK.
104. Oikeh S.O. 1999. IITA Resource and Crop Management Technologies - A Synopsis. International Institute of Tropical Agriculture, Ibadan, Nigeria, 155pp.
105. Ong C.K. 1996. A framework for quantifying the various effects of tree-crop interactions. In: Ong C.K. and Huxley P. (eds), Tree-Crop interactions. A Physiological Approach. CAB International, Wallingford, UK, pp. 1-23.
106. Ong C.K. and Huxley P. 1996. Tree-Crop Interactions. A Physiological Approach. CAB International, Wallingford, UK, pp. 386
107. Osei-Bonsu P., Asibuo J.Y., Quansah C., Adam M.G. and Olympio A.S. 2000. Effect of fallow and method of land preparation on the yield of okra/tomato grown in the dry season. In: Carsky R.J., Eteka A.C., Keatinge J.H.D. and Manyong V.M. (eds), Cover Crops for Natural Resource Management in West Africa. International Institute of Tropical Agriculture, Ibadan, Nigeria, pp. 47-54.
108. Oualou K. and Gnahoua G. 1998. La culture en bandes alternées, une technique d'aide à la stabilisation des systèmes traditionnels de cultures. In: Duguma B. and Mallet B. (eds), Regional Symposium on Agroforestry Research and Development in the Humid Lowlands of West and Central Africa. Proceedings of a Symposium Held 4-7 December 1995, Yaoundé, Cameroon, pp. 279-288.
109. Owino F., Ladipo D.O. and Esegu F. 1995. Selection of multipurpose tree/shrub species for alley cropping. In: Kang B.T., Osiname O.A. and Larbi A. (eds), Alley Farming Research and Development. Alley Farming Network for Tropical Africa, Ibadan, Nigeria pp.155-161.
110. Palada M.C., Kang B.T. and Claassen S.L. 1992. Effect of alley cropping with Leucaena leucocephala and fertiliser application on yield of vegetable crops. Agroforest. Syst. 19: 139-147.
111. 15N placement at different soil depths. Agroforest. Syst. 43: 81-93.
112. Ruhigwa B.A., Gichuru M.P., Swennen R. and Tairah N.M. 1995. Plantain production in an alley cropping system on an Ultisol in Southeastern Nigeria. In: Kang B.T., Osiname O.A. and Larbi A. (eds), Alley Farming Research and Development. Alley Farming Network for Tropical Africa, Ibadan, Nigeria, pp. 268-277.
113. Ruthenberg H. 1980. Farming Systems in the Tropics, 3rd ed. Oxford University Press, Oxford, UK.
114. Sanchez P.A. 1976. Properties and Management of Soils in the Tropics. Wiley, New York, USA, pp. 618
115. Sanchez P.A. 1995. Science in Agroforestry. Agroforest. Syst. 30: 5-55.
116. Schroth G. and Zech W. 1995a. Root length dynamics in agroforestry with Gliricidia sepium as compared to sole cropping in the semi-deciduous zone of West Africa. Plant Soil 170: 297-306.
117. Schroth G. and Zech W. 1995b. Above- and below-ground biomass dynamics in a sole cropping and an alley cropping system with Gliricidia sepium in the semi-deciduous rainforest zone of West Africa. Agroforest. Syst. 31: 181-198.
118. Schroth G., Balle P. and Peltier R. 1995b. Alley cropping groundnut with Gliricidia sepium in Côte d'Ivoire: effects on yields, microclimate and crop diseases. Agroforest. Syst. 29: 147-163.
119. Schroth G., Oliver R., Balle P., Gnahoua G.M., Kanchanakanti N., Leduc B., Mallet B., Peltier R. and Zech W. 1995a. Alley cropping with Gliricidia sepium on an high base status soil following forest clearing: effects on soil conditions, plant nutrition and crop yields. Agroforest. Syst. 32: 261-276.
120. Segda Z. and Hien V. 2000. Integration des plantes de couverture dans les systèmes de culture pluviaux de l'Est et de l'Ouest du Burkina Faso. Acquis de recherche et perspectives. In: Carsky R.J., Eteka A.C., Keatinge J.H.D. and Manyong V.M. (eds), Cover Crops for Natural Resource Management in West Africa. International Institute of Tropical Agriculture, Ibadan, Nigeria, pp. 23-32.
121. Segda Z., Hien V. and Becker M. 2000. Mucuna cochinchinensis dans les systèmes d'association et de rotation culturales (Burkina Faso). In: Floret C. and Pontanier R. (eds), La jachère en Afrique Tropicale. John Libbey, Eurotext, Paris, France, pp. 622-627.
122. Siaw D.E.K.A., Kang B.T. and Okali D.U.U. 1991. Alley cropping with Leucaena leucocephala (Lam.) De Wit and Acioa barteri (Hook.f.) Engl. Agroforest. Syst. 14: 219-231.
123. Smucker A.J.M., Ellis B.G. and Kang B.T. 1995. Alley cropping on an Alfisol in the forest savanna transition zone: Root, nutrient and water dynamics. In: Kang B.T., Osiname O.A. and Larbi A. (eds), Alley Farming Research and Development. Alley Farming Network for Tropical Africa, Ibadan, Nigeria, pp. 103-121.
124. Stahr K., Leihner D.E. and Huwer G. 1996. The influence of organic matter on agroforestry systems at different sites in southern Bénin. Report of Results (Interim Report 1994-1996) of the Special Research Programme 308 'Adapted Farming in West Africa', University of Hohenheim, Germany, pp. 187-218.
125. Staver C. 1989. Shortened bush fallow rotations with relay-cropped Inga edulis and Desmodium ovalifolium in wet central Amazonian Peru. Agroforest. Syst. 8: 173-196.
126. Szott L.T., Palm C.A. and Sanchez P.A. 1991. Agroforestry in acid soils of the humid tropics. Adv. Agron. 45: 275-301.
127. Szott L.T., Palm C.A. and Buresh R.J. 1999. Ecosystem fertility and fallow function in the humid and subhumid tropics. Agroforest. Syst. 47: 163-196.
128. Tarawali G., DembeléE., N'Guessan B. and Youri A. 1998. Smallholders' use of stylosanthes for sustainable food production. In: Buckless D., Eteka A., Osiname O., Galiba M. and Galiano G. (eds), Cover Crops in West Africa Contributing to Sustainable Agriculture. International Development Reaserch Centre, Ottowa, Canada, pp. 107-170.
129. Tian G., Brussaard L. and Kang B.T. 1993. Biological effects of plant residues with contrasting chemical compositions under humid tropical conditions: effects on soil fauna. Soil Biol. Biochem. 25: 731-737.
130. Tian G., Kang B.T., Akobundu I.O. and Manyong V.M. 1995. Food production in the moist savanna of West and Central Africa. In: Kang B.T., Akobundu I.O., Manyong V.M., Carsky R.J., Sanginga N. and Kueneman E.A. (eds), Moist Savannas of Africa: Potentials and Constraints to Crop Production. International Institute of Tropical Agriculture Ibadan, Nigeria, pp. 107-127.
131. Tian G., Adejuyigbe C.O., Adeoye G.O. and Kang B.T. 1998. Role of soil microarthropods in leaf decomposition and N release under various land-use practices in the humid tropics. Pedobiologia 42: 33-42.
132. Tian G., Kolawole G.O., Salako F.K. and Kang B.T. 1999. An improved cover crop - fallow system for sustainable management of low activity clay soils of the tropics. Soil Sci. 164: 671-682.
133. Tian G., Kolawole G.O., Kang B.T. and Kirchhof G. 2000a. Nitrogen ferilizer replacement indexes of legume cover crops in the derived savanna of West Africa. Plant Soil 224: 287-296.
134. Tian G., Kolawole G.O., Ishida F. and Carsky R.J. 2000b. Onfarm study of Pueraria cover-crop fallow system in the derived savanna of West Africa. In:
135. Tossah B.K., Zamba D.K., Vanlauwe B., Sanginga N., Lyasse O., Diels J. and Merckx R. 1999. Alley cropping in the moist savanna of West-Africa: II. Impact on soil productivity in a North-to-South transect in Togo. Agroforest. Syst. 42: 229-244.
136. Totongnon J.K., Lame B. and Zannou P. 2000. Quelques performances et contraintes d'adoption du pois d'Angole (Cajanus cajan) et du pois macate (Mucuna pruriens var. utilis) en milieu paysan dans le Département de l'Atlantique, Republique du Bénin. In: Carsky R.J., Eteka A.C., Keatinge J.H.D. and Manyong V.M. (eds), Cover Crops for Natural Resource Management in West Africa. International Institute of Tropical Agriculture, Ibadan, Nigeria, pp. 109-119.
137. Vabi M.B., Yamoah C. and Tambi E. 1995. On-farm trials with Calliandra in the Highland region of Northwestern Cameroon. In: Kang B.T., Osiname O.A. and Larbi A. (eds), Alley Farming Research and Development. Alley Farming Network for Tropical Africa, Ibadan, Nigeria, pp. 449-454.
138. Vandermeer J. 1998. Maximizing crop yields in alley crops. Agroforest. Syst. 40: 199-206.
139. Van Der Meersch M.-K. 1992. Soil Fertility Aspects of Alley Cropping Systems in Relation to Sustainable Agriculture, Ph.D. thesis, Katholieke Universiteit te Leuven, Leuven, Belgium.
140. Vanlauwe B., Diels J., Sanginga N., Carsky R.J., Deckers J. and Merckx R. 2000a. Utilization of rock phosphate by crops on a representative toposequence in the Northern Guinea savanna zone of Nigeria: response by maize to previous herbaceous legume cropping and rock phosphate treatments. Soil Biol. Biochem. 32: 2079-2090.
141. Vanlauwe B., Aihou K., Iwuafor E.N.O., Houngnandan P., Diels J., Manyong V.M. and Sanginga N. 2000b. Recent developments in soil fertility management of maize-based systems: the role of legumes in N and P nutrition of maize in the moist savanna zone of West Africa. In: Carsky R.J., Eteka A.C., Keatinge J.H.D. and Manyong V.M. (eds), Cover Crops for Natural Resource Management in West Africa. International Institute of Tropical Agriculture, Ibadan, Nigeria, pp. 3-13.
142. Vanlauwe B., Sanginga N. and Merckx R. 2001. Alley cropping with Senna siamea in south-western Nigeria: I. Recovery of 15N labelled urea by the alley cropping system. Plant Soil 231: 187-199.
143. Vanlauwe B., Akinnifesi F.K., Tossah B.K., Lyasse O., Sanginga N. and Merckx R. 2002. Root distribution of Senna siamea grown on a series of derived-savanna-zone soils in Togo, West Africa. Agroforest. Syst. 54: 1-12.
144. Versteeg M.N. and Koudokpon V. 1993. Participative farmer testing on four low external input technologies, to address soil fertility decline in Mono province (Bénin). Agr. Sys. 42: 265-276.
145. Whittome M.P.B., Spencer D.S.C. and Bayliss-Smith T. 1995. IITA and ILCA on-farm alley farming research: lessons for extension workers. In: Kang B.T., Osiname O.A. and Larbi A. (eds), Alley Farming Research and Development. Alley Farming Network for Tropical Africa, Ibadan, Nigeria, pp. 423-435.
146. Yamoah C.F., Agboola A.A., Wilson G.F. and Mulongoy K. 1986. Soil properties as affected by the use of leguminous shrubs for alley cropping with maize. Agr. Ecosys. Environ. 18: 167-177.
147. Yao N.T. 1998. Effet de deux sources d'azote (engrais minéraux et organiques) sur la productivité du bananier plantain. In: Duguma B. and Mallet B. (eds), Regional symposium on agroforestry research and development in the humid low-lands of West and Central Africa. Proceedings of a Symposium held 4-7, December 1995, Yaoundé, Cameroon, pp. 305-320.
148. Yonkeu S. and Enoh M.B. 1998. Quelques ligneux naturels a usages multiples de l'Adamaoua Camerounais: Écologie et utilisation potentielle. In: Duguma B. and Mallet B. (eds), Regional symposium on agroforestry research and development in the humid lowlands of West and Central Africa. Proceedings of a Symposium held 4-7 December 1995, Yaoundé, Cameroon, pp. 159-164.
149. Young A. 1989. Agroforestry for Soil Conservation. Wallingford, CAB International.
150. Youri A. 1998. Système de cultures avec légumineuses au Cameroun. In: Buckless D., Eteka A., Osiname O., Galiba M. and Galiano G. (eds), Cover Crops in West Africa Contributing to Sustainable Agriculture. International Development Reaserch Centre, Ottowa, Canada, pp. 225-228.