Land Suitability Analysis Based Management of Flood Affected Agricultural Land of Kahalgaon Subdivision of Bhagalpur District, Bihar

Prolonged flood water poses to negative impact on the crop land. In this context, the present study was investigated to assess the site-specific flood impact on agricultural land using modern tools viz. remote sensing and geographical information systems. However, digital thematic maps of climatic conditions, topography, and soil physic-chemical properties were overlaid for the potential land suitability analysis of mustard. Hence, satellite imageries of Landsat 8, MODIS V5, and SRTM data were employed to assess the flood inundation in lowland topography. Results revealed that the lowland alluvial plains having gentle slopes were found to be 30 % flood-affected land in Kharifseason, but the same agricultural land in the Rabi season may be found to be marginally suitable (S3) for oilseeds, caused by ranged from 6.25 to 7.89 soil pH justify the slightly acidic to neutral in reaction, while the range of EC value found to be less than 1 dSm−1 that enable to justify safe for agricultural operation. Results also revealed that the precise decision about the best use of the land resources using land suitability analysis helped to overcome the constraints and increase the agricultural productivity in the Rabi season.