Vol. 8, Issue 11, Part M (2024)

The field experiment was conducted during rabi season 2023-24 at Research and Education farm, Department of Agricultural Botany, College of Agriculture, Dapoli to study effect of different levels of potassium on yield of the cowpea (Vigna unguiculata (L.) Walp) variety Konkan Safed under water stress condition. The field experiment was laid out in split plot design with sixteen treatment combinations replicated thrice. The experiment consisted of four main plot treatments: T₁- Absolute control (Regular irrigation), T₂- Stress during vegetative phase, T₃- Stress during reproductive phase, T₄- entire stress treatment, along with four sub plot treatments of different levels of potassium: K₁- 0 kg K/ha, K₂- 20 Kg K/ha, K₃- 40 kg K/ha, K₄- 60 Kg K/ha. The result revealed that, the yield attributing characters viz., No. of pods per plant, number of seeds per pod, seed yield per plant, 100 seed weight and harvest index of cowpea is highest in treatment T₁ followed by T₃ water stress treatment and when we consider potassium treatments, the treatment K₄ recorded highest yield attributing characters as compared to the rest of the potassium treatments. Among all the interactions T₁ K₄ recorded better performance in yield contributing characters under regular irrigation and potassium treatment combination. However under water stress conditions, the interaction T₃ K₄ found significantly superior over the rest of the water stress interactions with potassium.