MORFOLOGI DAN KLASIFIKASI TANAH PADA TOPOSEKUEN LERENG BARAT GUNUNG KELUD, KEDIRI, JAWA TIMUR

The research that was conducted from April to December 2020 in the Supiturung Micro-Watershed, located on western slope of Mount Kelud, Kediri aimed study morphological characteristics and soil classification using a topo-sequence approach. Four pedons were observed across physiographic positions (upper, middle lower slopes) dry-land farming land use. method used this included 8 stages, namely preparation stage, pre-survey, map making, field observations, laboratory analysis, classification, data processing, reporting. On field, cross-sectional profiles carried out four selected by testing profile measuring 1 x meter with depth 150-200 cm, followed horizon, thickness, texture, structure, consistency, effective depth, type number pores, as well other characteristics. Soil samples collected genetic horizon for being analyzed standard procedures, then taken physical chemical analysis. morphology physicochemical properties classified based Keys Taxonomy Sub Group level. results showed each pedon has different Group. This condition can be caused many factors, such differences epipedon base saturation values, organic C levels, conditions at time direct observation. have lithologic discontinuities, recognition these types changes is important because pedogenesis pedogenic interpretations are greatly influenced parent material.