Abstract
Water is the most limiting factor for plant production in arid to semiarid regions. In order to overcome this limitation surface runoff water can be used to supplement seasonal rainfall. During 1996 we conducted a runoff irrigated agroforestry field trial in the Turkana district of Northern Kenya. The effects of two different Acacia saligna (Labill.) H. Wendl. tree planting densities (2500 and 833 trees per ha), tree pruning (no pruning vs. pruning) and annual intercrops (no intercrop vs. intercrop: Sorghum bicolor (L.) Moench during the first season and Vigna unguiculata (L.) Walp. during the second season) on water use were investigated. The annual crops were also grown as monocrops. Water consumption ranged from 585 to 840 mm during the first season (only treatments including trees). During the second season, which was shorter and the plants relied solely on stored water in the soil profile, water consumption was less than half of that during the first season. Highest water consumptions were found for non-pruned trees at high density and the lowest were found for the annual crops grown as monocrops. Tree pruning decreased water uptake compared to non-pruned trees but soil moisture depletion pattern showed complementarity in water uptake between pruned trees and annual intercrops. The highest values of water use efficiency for an individual treatment were achieved when the pruned trees at high density were intercropped with sorghum (1.59 kg m−3) and cowpea (1.21 kg m−3). Intercropping and high tree density increased water use efficiency in our runoff agroforestry trial. We ascribe the observed improvement in water use efficiency to the reduction of unproductive water loss from the bare soil.
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References
Agassi M, Morin J and Shainberg I (1985) Effect of raindrop impact and water salinity on infiltration of sodic soils. Soil Science Society of America Journal 49: 186–190
Belsky AJ, Mwonga SM, Amundson RG, Duxbury JM and Ali AR (1993) Comparative effects of isolated trees on their undercanopy environments in high-and low-rainfall savannas. Journal of Applied Ecology 30: 143–155
Braziotis DC and Papanastasis VP (1995) Seasonal changes of understorey herbage yield in relation to light intensity and soil moisture content in a Pinus pinaster plantation. Agroforestry Systems 29: 91–101
Degen A and Berliner PR (1997). Livestock and vegetal production in deserts using runoff water. Report No. CA 13-061, USAID/CAR.
Dodd JL (1994) Desertification and degradation in sub-Saharan Africa. Bioscience 44: 28–34
Droppelmann K and Berliner P (2000) Biometric relationships and growth of pruned and nonpruned Acacia saligna trees under runoff irrigation in northern Kenya. Forest Ecology and Management 126: 349–359
Droppelmann K, Ephrath JE and Berlinear P (2000) Tree/crop complementary in an arid zone runoff agroforestry system in northern Kenya. Agroforestry Systems (in press)
Eastham J, Rose CW, Cameron DM, Rance SJ, Talsma T and Charles Edwards DA (1990a) Tree/pasture interactions at a range of tree densities in an agroforestry experiment: I. Water uptake in relation to rooting patterns. Australian Journal of Agricultural Research 41: 697–708
Eastham J, Rose CW, Charles Edwards DA, Cameron DM and Rance SJ (1990b) Planting density effects on water use efficiency of trees and pasture in an agroforestry experiment. New Zealand Journal of Forestry Science 20: 39–53
Govindarajan M, Rao MR, Mathuva MN and Nair PKR (1996) Soil-water and root dynamics under hedgerow intercropping in semiarid Kenya. Agronomy Journal 88: 513–520
Hsiao TC (1973) Plant responses to water stress. Annual Review of Plant Physiology 24: 519–570
Huxley PA, Pinney A, Akunda E and Muraya P (1994) A tree/crop interface orientation experiment with a Grevillea robusta hedgerow and maize. Agroforestry Systems 26: 23–45
Kessler JJ and Breman H (1991) The potential of agroforestry to increase primary production in the Sahelian and Sudanian zones of West Africa. Agroforestry Systems 13: 41–62
Le Roux X, Bariac T and Mariotti A (1995) Spatial partitioning of the soil water resource between grass and shrub components in a West African humid savanna. Oecologia 104: 147–155
Lehmann J, Droppelmann K and Zech W (1998a) Runoff irrigation of crops with contrasting root and shoot development in Northern Kenya: Water depletion and above-and belowground biomass production. Journal of Arid Environments 38: 479–492
Lehmann J, Peter I, Steglich C, Gebauer G, Huwe B and Zech W (1998b) Below-ground interactions in dryland agroforestry. Forest Ecology and Management 111: 157–169
Lövenstein HM, Berliner PR and van Keulen H (1991) Runoff agroforestry in arid lands. Forest Ecology and Management 45: 59–70
McIntyre BD, Riha SJ and Ong CK (1997) Competition for water in a hedge-intercrop system. Field Crops Research 52: 151–160
Milton SJ, Dean WRJ, Du Plessis MA and Siegfried WR (1994) A conceptual model of arid rangeland degradation: The escalating cost of declining productivity. Bioscience 44: 70–76
Morris RA, Villegas AN, Polthanee A and Centeno HS (1990) Water use by monocropped and intercropped cowpea and sorghum grown after rice. Agronomy Journal 82: 664–668
Noy-Meir I (1985) Desert ecosystem structure and function. In: Evenari M, Noy-Meir I and Goodall DW (eds) Hot deserts and arid shrublands, pp 93–101. Elsevier Science Publishers, Amsterdam
Ong CK, Black CR, Marshall FM and Corlett JE (1996) Principles of resources capture and utilization of light and water. In: Ong CK and Huxley P (eds) Tree-Crops Interactions: A Physiological Approach, pp 73–158. CAB International, Wallingford, UK
Penman HL (1948) Natural evaporation from open water, bare soil and grass. Proceedings of the Royal Society London Series A 194: 120–145
Rao MR, Nair PKR and Ong CK (1997) Biophysical interactions in tropical agroforestry systems. Agroforestry Systems 38: 3–50
Sauerhaft B, Berliner PR and Thurow TL (1998) The fuelwood crisis in arid zones: Runoff agriculture for renewable energy production. In: Bruins HJ and Lithwick H (eds) The Arid Frontier, pp 351–363. Kluver Academis Publishers, Amsterdam
Schroth G (1995) Tree root characteristics as criteria for species selection and systems design in agroforestry. Agroforestry Systems 30: 125–143
Schulze ED (1986) Carbon dioxide and water vapor exchange in response to drought in the atmosphere and in the soil. Annual Review of Plant Physiology 37: 247–274
UNEP (1997) World atlas of desertification. 2nd/Ed. Arnold, London, 114 pp
Vanderlip RL and Reeves HE (1972) Growth stages of sorghum. Agronomy Journal 64: 13–17
Wallace JS (1996) The water balance of mixed tree-crop systems. In: Ong CK and Huxley P (eds) Tree-Crop Interactions: A Physiological Approach, pp 189–234. CAB International, Wallingford, UK
Wallace JS and Jackson NA (1994). Interim report for the ODA Forestry Programme for the period 1 October 1992 to 30 September 1993, Report No. OD94/2. Institue of Hydrology, Wallingford.
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Droppelmann, K.J., Lehmann, J., Ephrath, J.E. et al. Water use efficiency and uptake patterns in a runoff agroforestry system in an arid environment. Agroforestry Systems 49, 223–243 (2000). https://doi.org/10.1023/A:1006352623333
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DOI: https://doi.org/10.1023/A:1006352623333