IOSR-JESTFT   Volume-20 ~ Issue-8 ~ Aug. 2026

Abstract: Mining landscapes are often interpreted from net land cover gains and losses, yet such summaries can conceal substantial exchanges among cultivated land, exposed substrates, settlements, vegetation and water filled excavations. This study examined landscape reconfiguration across a 335.66Km² mapped portion of Jos South Local Government Area (L.G.A.) Plateau State, Nigeria, between 2000 and 2026. Landsat 7 ETM+ (2000), Landsat 8 OLI/TIRS (2013) and Landsat 9 OLI 2/TIRS 2 (2026) imagery were classified into six land cover classes and analysed,....

Key Word: Artisanal and Small-Scale Mining; Landcover Transition; Landsat; Mining Ponds; NDVI; Bare Soil Index; NDWI.

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Abstract: Cowpea is intrinsically a crop of many values, but several limitations face its production, especially insect pest attack. Chlorpyrifos is a highly effective insecticide in controlling insect pests of cowpea on field. However, chorpyrifos residue is one of the reasons why Nigerian cowpea was restricted at European Union borders. Information on the residue levels of chlorpyrifos in cowpea grains from Nigerian Southern Guinea Savannah has not been do....

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