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The present investigations were conducted on Indian mustard (Brasslca }lmcea L.) plants
grown under field conditions. Maxlmwn leaf area, growth parameters including crop gre:wth
rate (CGR), relative growth rate (RGR) and net asslmlIation rate were observed under zinc
sulphate 20 kg/ha with three irrigation levels while biochemical constituents of leaves
especially chlorophyll was higher under zinc sulpnate 40 kg/ha with three irrigation. The
maxlmwn seed yield was recorded In zinc sulphate 40 kg/ha with three irrigation