Author(s): U. GIRi, P. KUNDU, A. CHAKRABORTY AND P. BANDYOPADHYAY

Abstract: To study the effect of scheduling of irrigation at different physiological growth stages, the most physiologically critical water need stage and different levels of sulphur on yield and water use efficiency (WUE) of groundnut, a field experiment was conducted for two consecutive years during pre-kharif season. The experiment was conducted in a sandy loam soil with 24 treatment combinations (8 irrigation levels and 3 levels of sulphur). The study revealed that levels of irrigation did not significantly influence yield attributing characters but significantly influenced the kernel yield. Levels of sulphur significantly influenced all the yield attributing characters and kernel yield. Irrigation applied at flowering, pegging and pod filling stage (I8) and sulphur applied @ 15 kg ha-1 (S2) recorded an increase in kernel yield to the tune of 106.52% and 73.11% over control, respectively. The highest consumptive use (CU) (636.90 mm), and WUE (5.61 kg ha-1 mm-1) were recorded under same irrigation treatment (I8) followed by irrigation at pegging and pod filling stage (I7).

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