Effect of Molybdenum on Leaf Chlorophyll and Biomass Yield of Cowpea (Vigna unguiculata)

Molybdenum (Mo) is an essential micronutrient for plant. It is plays an important key role in chlorophyll synthesis. The Experiment was conducted in Pot house at Department of Soil Science and Agricultural Chemistry, College of Agriculture, JNKVV, Jabalpur during Kharif season 2014.The soil of experimental site belongs to Kheri-series and taxonomically comes under the order Vertisols, sub order Sterts, great group Haplusterts, sub group TypicHaplusterts. In all total 14 number of treatment combinations were tried under factorial randomized block design replicated thrice. The result revealed that variations in observation were found with treatment of Rhizobium inoculation. Seed treatment of Mo @ 0.5 g ammonium molybdate kg-1 seed (StM1) responded better, followed by soil application of Mo @ 1.0 kg Mo ha-1 soil (SaM1) as main effects. With higher dose of Mo as seed treatment (StM2) exerted significantly negative effect. Whereas higher dose of soil application of Mo (SaM2) was merginally higher over no application of Mo which was seemed to be the buffer action of soil to nulify adverse effect of the micronutrient.