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Enhancing farming system water productivity through alternative land use and improved water management of rainfed agriculture in Vertisol areas

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Title Enhancing farming system water productivity through alternative land use and improved water management of rainfed agriculture in Vertisol areas
 
Creator Erkossa, Teklu
Haileslassie, Amare
MacAlister, C.
 
Subject farming systems
water
 
Description Waterlogged Vertisols are amongst the high potential soils where management interventions could result in positive impacts. This study utilized soil, climate and crop and livestock productivity data and models to demonstrate intensification strategies which increase crop–livestock system productivity and to understand the effects of alternative land use and water management options on water productivity in the Vertisols areas. The areas have been classified into three slope classes including areas where artificial drainage is not feasible, where Broad Bed and Furrows (BBF) can be used to drain the excess water and naturally drained areas, represented by areas with 0–2%, 2–5% and over 5% slope steepness, respectively. Early planting of wheat (Triticum spp) using BBF on drainable areas and rice (Oryza sativa) or grasspea (Lathyrus sativus) on the flat areas were compared with the traditional practices. Yield and biomass data were obtained from research stations in the area whilst the effective rainfall and crop water requirement were estimated using CROPWAT Model. The feed value of the native grass and crop straw was estimated based on previous works. With respect to effective rainfall, the water productivity increase due to BBF over the control ranged from 5 to 200%, with an average increase of 57%. Despite higher water consumption of the rice, feeding its residues to livestock enhanced the overall economic water productivity of the system over the natural grazing or grasspea cultivation. Consequently, use of BBF enables growing high value or food crops of choice that may be sensitive to waterlogging whilst tolerant crops can be grown on flat lands allowing utilization of the full growing period. Coupled with livestock integration into the system, the alternatives can enhance food production and resource use efficiency from these ‘marginal’ areas.
 
Date 2013-11-01
2013-12-14T14:56:09Z
2013-12-14T14:56:09Z
 
Type Book Chapter
 
Identifier Erkossa, T., Haileslassie, A. and MacAlister, C. 2013. Enhancing farming system water productivity through alternative land use and improved water management of rainfed agriculture in Vertisol areas. IN: Wolde, M. (ed). 2013, Rainwater management for resilient livelihoods in Ethiopia: Proceedings of the Nile Basin Development Challenge Science Meeting, Addis Ababa, 9–10 July 2013. NBDC Technical Report 5. Nairobi, Kenya: ILRI.
https://hdl.handle.net/10568/34255
 
Language en
 
Relation https://hdl.handle.net/10568/33929
NBDC Technical Report
 
Rights Open Access
 
Format application/pdf
 
Publisher International Livestock Research Institute