Why tree-crop interactions in agroforestry appear at odds with tree-grass interactions in tropical savannahs

Agroforestry Systems

Volumn 45, Issue 1-3, 1999, Pages 109-129

  Ong, C K ^a   Leakey, R R B ^b  

^a WORLD AGROFORESTRY CENTRE ICRAF   (Kenya)

^b CENTRE FOR ECOLOGY AND HYDROLOGY   (United Kingdom)

Author keywords

Alley cropping; Competition; Complementarity; Light interception; Resource capture; Water use

Indexed keywords

AGROFORESTRY; SAVANNA; TREE; VEGETATION DYNAMICS;

EID: 0032756784     PISSN: 01674366     EISSN: None     Source Type: Journal    
DOI: 10.1023/a:1006243032538     Document Type: Article

References (82)

1. Azam-Ali SN (1983) Seasonal estimates of transpiration from a millet crop using a porometer. Agricultural and Forest Meteorology 30: 13-24
2. Azam-Ali SN, Simmonds LP, Nageswara Rao RC and Williams TH (1989) Population, growth and water use of groundnut maintained on stored water. 3. Dry matter, water use and light interception. Experimental Agriculture 25: 77-86
3. Belsky AJ (1994) Influence of trees on savannah productivity: test of shade, nutrients, and tree-grass competition. Ecology 75: 922-932
4. Belsky AJ and Amundson RG (1997) Influence of savanna trees and shrubs on understorey grasses and soils: new directions in research. In: Bergstrom L and Kirchmann H (eds) Carbon and Nutrient Dynamics in Natural and Agricultural Tropical Ecosystems. CAB International (in press)
5. Belsky AJ, Amundson RG, Duxbury JM, Riha SJ and Mwonga SM (1989) The effects of trees on their physical, chemical and biological environments in semiarid savanna in Kenya. Journal of Applied Ecology 26: 1005-1024
6. Belsky AJ, Mwonga SM, Amundson RG, Duxbury JM and Ali AR (1993) Comparative effects of isolated trees on their understorey environments in high- and low-rainfall savannas. Journal of Applied Ecology 30: 143-155
7. Breman H and Kessler JJ (1995) Woody Plants in Agroecosystems of Semiarid Regions. Springer Verlag, Berlin, Heidelberg
8. Buresh RJ and Tian G (1998) Soil improvement in sub-Saharan Africa. Agroforestry Systems 38: 51-76
9. Burgess SSO, Adams MA, Turner NC and Ong CK (1998) Redistribution of water within plant root systems. Oecologia 115: 306-311
10. Calder IR, Rosier PTW and Prasanna KT (1997) Eucalyptus water use greater than rainfall input-a possible explanation from southern India. Hydrology and Earth Syst Sci (in press)
11. Cannell MGR, van Noordwijk M and Ong CK (1996) The central agroforestry hypothesis: the trees must acquire resources that the crop would not otherwise acquire. Agroforestry Systems 34: 27-31
12. Cannell MGR, Mobbs DC and Lawson GJ (1998) Complementarity of light and water use in tropical agroforests II. Modelling theoretical tree production and potential crop yield in arid to humid climates. Forest Ecology and Management 102: 275-282
13. Cooper PJM, Gregory PJ, Tully D and Harris HG (1987) Improving water use efficiency of annual crops in rainfed farming systems of West Asia and North Africa. Experimental Agriculture 23: 113-158
14. Cooper PJM, Leakey RRB, Rao MR and Reynolds L (1996) Agroforestry and the mitigation of land degradation in the humid and sub-humid tropics of Africa. Experimental Agriculture 32: 235-290
15. Corlett JE, Black CR, Ong CK and Monteith JL (1992b) Above and below-ground interactions in a leucaena/millet alley cropping system. 2. Light interception and dry matter production. Agricultural and Forest Meteorology 60: 73-91
16. Corlett JE, Ong CK, Black CR and Monteith JL (1992a) Above and below-ground interactions in a leucaena/millet alley cropping system. 1. Experimental design, instrumentation and diurnal trends. Agricultural and Forest Meteorology 60: 53-72
17. Cuff AD, Allen SJ, Gash JHC, Lloyd CR and Wallace JS (1993) Energy and water budgets of an area of patterned woodland in the Sahel. Agricultural and Forest Meteorology 66: 65-80
18. Dawson TE (1993) Hydraulic lift and water use by plants: implications for water balance, performance and plant-plant interactions. Oecologia 95: 565-574
19. Deans JD, Lindley DK and Munro RC (1995) Deep Beneath Trees in Senegal, Annual Report 1993-1994, 12-14, Institute of Terrestrial Ecology, Bush Estate, Penicuik Scotland, UK
20. de Wit C (1958) Transpiration and Crop Yields. Agricultural Research Proceedings 59, Wageningen
21. de Wit C (1960) On competition. Verslagen van Landbouwkunige Onderzoekingen 66: 1-82
22. Edmunds WM (1991) Groundwater recharge in the west African Sahel. NERC News no 17, 8-10
23. Ewel JJ (1986) Designing agricultural ecosystems for the humid tropics. Annual Review of Ecology and Systematics 17: 245-271
24. Ewel JJ and Bigelow SW (1995) Plant life forms and tropical ecosystem functioning. In: Orians GH, Dirzo R and Cushman JH (ed) Biodiversity and Ecosystem Processes in Tropical Forests, pp 101-126. Springer-Verlag. Berlin, Germany
25. Fukai S and Trenbath BR (1993) Processes involving intercrop productivity and yields of component crops. Field Crops Research 34: 247-271
26. Gaze SR, Simmonds LP, Brower J and Bouma J (1997) Measurement of surface redistribution of rainfall and modelling its effect on water balance calculations for a millet field on sandy soil in Niger. Journal of Hydrology (in press)
27. Govinadrajan M, Rao MR, Mathuva MN and Nair PK (1996) Soil-water and root dynamics under hedgerow intercropping in semiarid Kenya. Agronomy Journal 88: 513-520
28. Gregory PJ (1996) Approaches to modelling the uptake of water and nutrients in agroforestry systems. Agroforestry Systems 34: 51-65
29. Hauser S (1993) Root distribution of Dactyladenia (Acioa) barteri and Senna (Cassia) siamea in alley cropping. Implication for field experimentation. Agroforestry Systems 24: 111-121
30. Howard SB, Ong CK, Black CR and Khan AAH (1997) Using sap flow gauges to quantify water uptake by tree roots from beneath the crop rooting zone in agroforestry systems. Agroforestry Systems 35: 15-29
31. Howard SB, Ong CK, Rao MR, Mathuva M and Black CR (1995) Partitioning of light and water in leucaena/maize agroforestry systems. In: Sinoquet H and Cruz P (eds) The Ecophysiology of Tropical Intercropping, pp 175-187. INRA Editions, Paris
32. Huntley BJ and Morris JW (1982) Structure of Nylsvley savanna. In: Huntley BJ and Walker BH (ed) Ecology of Tropical Savannas, pp 433-455. Springer Verlag, Berlin
33. Huntley BJ and Walker BH (eds) (1982) Ecology of Tropical Savannas. Springer Verlag, Berlin, 669 pp
34. ICRAF (1996) Annual Report 1996, pp 263, International Centre for Research in Agroforestry, Nairobi, Kenya
35. ICRAF (1997) ICRAF Medium Term Plan 1998-2000, International Centre for Research in Agroforestry, Nairobi, Kenya, 73 pp
36. Jama B, Nair PKR and Rao MR (1995) Productivity of hedgerow shrubs and maize under alley cropping and block planting systems in semiarid Kenya. Agroforestry Systems 31: 257-274
37. Jonsson K, Fidgeland L, Maghembe JA and Högberg P (1988) The vertical root distribution of fine roots of five tree species and maize in Morogoro, Tanzania. Agroforestry Systems 6: 63-69
38. Kater LJM, Kante S and Budelman A (1992) Karité (Vitellaria paradoxa) and néré (Parkia biglobosa) associated with crops in South Mali. Agroforestry Systems 18: 89-105
39. Kennard DG and Walker BH (1973) Relationships between tree canopy cover and Panicum maximum in the vicinity of Fort Victoria. Rhodesian Journal of Agricultural Research 11: 145-153
40. Kessler JJ (1992) The influence of karité (Vitellaria paradoxa) and néré (Parkia biglobosa) trees on sorghum production in Burkina Faso. Agroforesty Systems 17: 97-118
41. Khan AAH and Ong CK (1996) A low cost heat pulse method for measuring tree root water uptake. Agroforestry Today 7: 19-22
42. Kinyamario JI, Trlica MJ and Njoka TJ (1995) Influence of tree shade on plant water status, gas exchange, and water use efficiency of Panicum maximum Jacq. and Themeda triandra Forsk. in a Kenya savanna. African Journal of Ecology 33: 114-123
43. Leakey RRB (1996) Definition of agroforestry revisited. Agroforestry Today 8: 5-7
44. Leakey RRB (1998) Agroforestry for biodiversity in farming systems. In: Collins W and Qualset C (eds) The Importance of Biodiversity in Agroecosystems, pp 127-145. CRC Press, New York, USA
45. Lott JE, Khan AAH, Ong CK and Black CK (1996) Sap flow measurements of lateral roots in agroforestry systems. Tree Physiology 16: 995-1001
46. Marshall FM (1995) Resource partitioning and productivity of perennial pigeonpea/groundnut agroforestry systems in India. PhD thesis, University of Nottingham,UK
47. Matthews RB, Harris D, Nageswara Rao RC, Williams JH and Wadia KDR (1988) The physiological basis for yield differences between four genotypes of groundnut (Arachis hypogaea) in response to drought. I. Dry matter production and water use. Experimental Agriculture 24: 191-202
48. McIntyre BD, Riha SJ and Ong CK (1996) Light interception and evapotransipration in hedgerow agroforestry systems. Agricultural and Forest Meteorology 81: 31-40
49. McIntyre BD, Riha SJ and Ong CK (1997) Competition for water in a hedge-intercrop system. Field Crop Research 52: 151-160
50. Medina E (1982) Physiological ecology of neotropical savanna plants. In: Huntley BJ and Walker BH (eds) Ecology of Tropical Savannas, pp 308-335. Springer Verlag, Berlin
51. Mekonnen K, Buresh RJ and Jama B (1997) Root and inorganic nitrogen distribution in sesbania fallow, natural fallow and maize fields. Plant and Soil 188: 319-327
52. Monteith JL, Ong CK and Corlett JE (1991) Microclimatic interactions in agroforestry systems. Forest Ecology and Management 45: 31-44
53. Nair PKR (1993) An Introduction to Agroforestry. Kluwer Academic Publishers, Dordrecht, The Netherlands, 499 pp
54. Ong CK and Black CR (1994) Complementarity in resource use in intercropping and agroforestry systems. In: Monteith JL, Scott RK and Unsworth MH (eds) Resource Capture by Crops. Nottingham University Press, pp 255-278. Loughborough, UK
55. Ong CK, Black CR, Marshall FM and Corlett JE (1996) Principles of resource capture and utilization of light and water. In: Ong CK and Huxley PA (eds) Tree-Crop Interactions: A Physiological Approach. CAB International, pp 73-158. Wallingford, UK
56. Ong CK, Odongo JCW, Marshall F and Black CR (1992) Water use of agroforestry systems in semiarid India. In: Calder IR, Hall LR and Adlard PG (eds) Growth and Water Use of Plantations, Proceedings of the International Symposium on the Growth and Water Use of Forest plantations, Bangalore, 7-11 February, 1991, pp 347-358. Chichester, Wiley
57. Ong CK, Simmonds LP and Matthews RB (1987) Responses to saturation deficit in a stand of groundnut (Arachis hypogaea L.). 2. Growth and development. Annals of Botany 59: 121-128
58. Poschen P (1986) An evaluation of the Acacia albidia-based agroforestry practices in the Hararghe highlands of eastern Ethiopia. Agroforestry Systems 4: 31-56
59. Ranganathan R and de Wit C (1996) Mixed cropping of annuals and woody plants: an analytical approach to productivity and management. In: Ong CK and Huxley PA (eds) Tree-Crop Interactions: A Physiological Approach, pp 25-50. CAB International Wallingford, UK
60. Rao MR, Muraya P and Huxley PA (1993) Observations of some tree root systems in agroforestry intercrop situations and their graphical representation. Experimental Agriculture 29: 183-194
61. Rao, MR, Nair, PK and Ong CK (1998) Biophysical interactions in tropical agroforestry systems. Agroforestry Systems 38: 3-49
62. Rees DJ (1986) The effects of population density and intercropping with cowpea on the water use and growth of sorghum in semiarid conditions in Botswana. Agricultural and Forest Meteorology 37: 293-308
63. Rhoades CC (1995) Seasonal patterns of nitrogen mineralisation and soil moisture beneath Faidherbia albida (syn Acacia albida) in central Malawi. Agroforestry Systems 29: 133-145
64. Rhoades CC (1997) Single-tree influences on soil properties in agroforestry: lessons from natural forest and savanna ecosystems. Agroforestry Systems 35: 71-94
65. Rocheleau D, Weber F and Field-Juma A (1988) Agroforestry in Dryland Africa. International Council for Research in Agroforestry, Nairobi, Kenya, 311 pp
66. Rockstrom, J (1997) On-farm agrohydrological analysis of the Sahelian yield crisis: rainfall partitioning, soil nutrients and water use efficiency of pearl millet. PhD thesis, University of Stockholm
67. Schroth G (1995) Tree root characteristics as criteria for species selection and systems design in agroforestry. Agroforestry Systems 30: 125-143
68. Shankarnarayan KA, Harsh LN and Kathju S (1987) Agroforestry in the arid zones of India. Agroforestry Systems 5: 69-88
69. Singh RP, Ong CK and Saharan N (1989) Above and below-ground interactions in alley cropping in semiarid India. Agroforestry Systems 9: 259-274
70. Sinoquet H and Cruz P (1995) Ecophysiology of Tropical Intercropping. INRA, Paris, 483 pp
71. Smith DM, Jackson NA, Roberts JM and Ong CK (1998) Reverse flow in tree roots and downward siphoning of water by Grevillea robusta. Functional Ecology (submitted)
72. Smith DM, Jarvis PG and Odongo JCW (1997) Sources of water used by trees and millet in Sahelian windbreak systems. Journal of Hydrology 198: 140-153
73. Stewart M and Bromley T (1994) Use of Melia volkensii in a semiarid agroforestry systems in Kenya. Commonwealth Forestry Review 73: 128-131
74. Tiedemann AR and Klemmedson JO (1973) Effect of mesquite on physical and chemical properties of the soil. Journal of Range Management 26: 27-29
75. Trenbath BR (1974) Biomass productivity of mixtures. Advances in Agronomy 26: 177-210
76. Trenbath BR and Harper JL (1973) Neighbour effects in the genus Avena.1. Comparison of crop species. Journal of Applied Ecology 10: 379-400
77. Vandermeer J (1989) The Ecology of Intercropping. Cambridge University Press, UK
78. Van Noordwijk M and Ong CK (1996) Lateral resource flow and capture - the key to scaling up agroforestry results. Agroforestry Today 7: 29-31
79. Van Noordwijk M and Purnomosidhi P (1995) Root architecture in relation to tree-soil-crop interactions and shoot pruning in agroforestry. Agroforestry Systems 30: 161-173
80. Walker BH and Noy-Meir I (1982) Aspects of stability and resilience of savanna ecosystems. In: Huntley BJ and Walker BH (eds) Ecology of Tropical Savannas, pp 556-590. Springer Verlag, Berlin
81. Weltzin JF and Coughenour MB (1990) Savanna tree influence on understorey vegetation and soil nutrients in north western Kenya. Journal of Vegetation Science 1: 325-334
82. Willey RW (1985) Evaluation and presentation of intercropping advantages. Experimental Agriculture 21: 119-133