@article{Dinka:230511,
      recid = {230511},
      author = {Dinka, Megersa Olumana and Loiskandl, Willibald and  Ndambuki, Julius Musyoka},
      title = {Status of Groundwater Table Depth Under Long-Term  Irrigation in Wonji Plain: Concerns for Sustainability of  Wonji-Shoa Sugar Estate, Upper Awash Valley, Ethiopia},
      journal = {Sustainable Agriculture Research},
      address = {2014},
      number = {526-2016-37864},
      year = {2014},
      abstract = {The present study attempted to highlight the concerns of  shallow groundwater table depth (GWTD) to the  sustainability of Wonji-Shoa Sugar Estate (WSSE), Upper  Awash Valley of Ethiopia. The recent magnitude and  fluctuation of GWTD is mapped in ArcView GIS (using  universal kriging technique) from the monthly GWTD  monitoring data (2007-2009) using piezometer tubes. The  study result clearly showed that the GWTD at WSSE was  extremely shallow, showed great spatio-seasonal variability  and rising trend; thus, threatening the sustainability of  WSSE significantly. About 90% of the plantation fields have  GWTD above the critical depth of 1.5 m below the soil  surface and, hence, critically waterlogged. As a result,  the estate is recently achieving only 55% of the production  potential realized in the 1960s. Past trends indicate that  the GW has the potential to inundate Wonji plain and is  anticipated to devastate production during the next 10-15  years. Therefore, in order to sustain production system in  the region, there is an urgent need to identify the  possible causes of waterlogging and investigate the  feasible remedial measures to combat its problems. The  spatial mapping of GWTD with identified problematic areas,  indicated in the current study, is believed to provide a  tool for water management and, hence, crucial for the  decision making and actions taking processes.},
      url = {http://ageconsearch.umn.edu/record/230511},
      doi = {https://doi.org/10.22004/ag.econ.230511},
}