“Planting Density Modulates Growth and Biomass Allocation of Cowpea (Vigna Unguiculata [L.] Walp) in Iron Industry Effluent-Contaminated Soil: Planting Density and Cowpea Growth under Effluent Contamination”. Journal of Science and Technology, Sept. 2026, pp. 121-33, https://doi.org/10.4314/w7hps817.