Evaluation of Soil Changes Resulting from Application of Vetiver (Vetiveria nigritana) Grass Technology on Sloppy Urban Farm in Uyo, Akwa Ibom State

  • Dennis Edem


In order to meet the long-term objective of agricultural development at the instance of high demand for land in urban centre the importance of erosion control in relation to vetiver grass technology on acid sand soils of Uyo was adopted.  The potentials of vetiver grass strips technology in improving the fertility status of eroded land after four years were classified into three suitability classes viz: Highly suitable suitable and moderately suitable. The soils are suitable for arable crops but with varying degree of suitability that requires management practices. The soils of mapping unit-A suitable are highly acidic with low available water content and relatively low fertility. Their major fertility constraints include high bulk density the sandy nature and low potassium reserve. Mapping unit–B highly suitable are the main agricultural soils of the land area having sandy surface layer with high exchangeable bases while soil of Mapping unit–C  moderately or conditionally suitable are poorly drained and are good for short-season crops like vegetables during the short dry period of the year.  From the study the soil is fragile and sloppy therefore easily eroded mapping unit-A especially as the zone is in the high rainfall region. To improve soil fertility hence optimum crop yield vetiver grass strip of 10 m interval is recommended in addition to fertilizer application.