Response of common bean (Phaseolus vulgaris L.) to nutrient amendments across variable agro-climatic conditions in Ghana

Common bean (Phaseolus vulgaris L.) is an important crop with the potential to curb malnutrition in Sub-Saharan Africa (SSA). However, poor soil fertility considered be major constraint for production SSA. This study determines canopy spread, chlorophyll content, stomatal conductance, and seed yield of common beans a field experiment conducted at Fumesua (rain-forest) Akumadan (forest–savannah transition) agroecological zones. The was 2018 2019 cropping seasons using split-plot arranged randomized complete block design three replicates. treatments consisted main plot factor namely varieties (Lv. “Semanhyia” “Ennepa”) sub-plot P (75 kg ha−1), NPK (100 ACARP organic fertilizer (4 t ha-1), plus (2 ha-1 + 50 38 ha-1) control (zero-amendments). Results showed that co-application P, NPK, increased plant height spread by ≈9.54 11.25% compared their sole application control, respectively. Similarly, combined inorganic fertilizers content conductance 36.43 23.79% These observations translate into biomass therefore seed  (≈ 42.54 - 46.58%). A significant variety nutrient interaction were  observed number pods per yield, irrespective location. results suggest growth response may optimized both fertilizer. Key words: Crop productivity, fertilization, physiology, beans.