IAARD Researcher at Indonesian Soil Research Institute,JL. Tentara Pelajar 12, Cimanggu. Bogor.
Abstract. Earthquake and tsunami on December 24, 2004 had caused many damages to infrastructure, including agricultural facilities. Damages on the agricultural infrastructures have an impact on crops productivity, especially rice fields. To identify the condition of the paddy field irrigation infrastructure, field observations had been carried out. Survey locations are on irrigation network (IN) of Krueng Aceh and Krueng Jreu in Aceh Besar. Infrastructures observed were irrigation and drainage systems, and the channels direct to paddy fields. Observation was also made on soil properties from multiple locations. Observation results informed that there were three conditions of Krueng Aceh IN areas: good (about 3,283 ha or 50%), moderate (about 657 ha or10%), and somewhat poor (about 2,626 ha or 40%). In additon, irrigation conditions in the Krueng Jreu IN were: still in good condition (about 1,890 ha or 60%), moderate (315 ha or 10%), somewhat poor (about 945 ha or 30%). Reduced irrigation condition can cause by damaging to upstream area, changes in vegetation density in the hills/mountains up stream. While in the down stream irrigation is reduced due to damage to irrigation infrastructure. This is caused by human and natural influences such as house hold garbage, and earthquakes. Direct human influence resulted inseveral things, among others: 1) the accumulation of garbage, especially drainage and water gates, and 2) loss/destruction of the water gate. Effect of human nature directly and indirectly include: 1) the building is old, 2) flood, 3) sedimentation, and 4) the growth of weed sand algae in water bodies.
Keywords: Lowland, infrastructure, Krueng Aceh, Krueng Jreu, Aceh Besar
Paper published at Proceeding International Workshop on Sustainable Management of Lowland for Rice Production. p. 223-230. Editors: Husen et al.. Banjarmasin, 27-28 September 2012. Indonesian Agency for Agricultural Research and Development. Ministry of Agriculture. 2013