Assessment of Agricultural Production in Dry Season in Nganjuk District, East Java, Indonesia

Abstract

Grain production in dry season is important for regional sustainable development; however water shortage in dry season is problem in Nganjuk district. Therefore, groundwater is conjunctively used for irrigation with surface irrigation in the dry season. Objective of this paper is spatial assessment of agricultural production using GIS. GIS and remote sensing were used to analysis land use and irrigation wells density. Land use analysis was conducted to identify cultivated area in second dry season. Surface irrigation analysis conducted to get actual surface water supply in second dry season. The irrigation well density and utilization of groundwater for irrigation in second dry season was analyzed. The result shows land use was stable condition from 1999 until 2009 in second dry season. Agricultural production in Mrican- Kiri block was supported by water supply from surface irrigation. Agricultural production in other blocks was supported by conjunctive use of groundwater with surface irrigation, where Kuncir-Bodor block was enough water supply; Widas block was enough water supply but potentially water shortage was occur; and Ketandan-Tretes block was occurring of water shortage.