Effect of Zinc and Iron on Growth and Productivity of Relay Grass Pea (Lathyrus sativus L.) in New Alluvial Zone of West Bengal

A field experiment was designed to validate the effect of Zinc and Iron on growth and productivity of relay Grass pea (Lathyrus sativus L.) in New Alluvial Zone of West Bengal. The experiment was carried out in BCKV, Kalyani, West Bengal, India during rabi seasons of 2016-17 and 2017-18, following split-split plot design taking relay sowing of lathyrus in main plots [S1: Satabdi (IET 4786), S2: Swarna (MTU 7029)], three lathyrus varieties in sub plot (V1: Nirmal, V2: Prateek and V3: Ratan) and four foliar sprays at pre-flowering and pod development stages in sub – sub plot (F1: Control, F2: 0.5% FeSO4, F3: 0.5% ZnSO4 and F4: 0.5% FeSO4 + 0.5% ZnSO4) with three replications. First date of sowing (S1) i.e., relay sowing of lathyrus in satabadi (IET 4786) and foliar spray of Fe and Zn, either alone or in combination performed better in terms of plant height, dry matter accumulation, CGR, LAI, LAD, seed yield, stover yield and harvest index of different lathyrus varieties due to higher radiation use efficiency and profile moisture contribution.