Effect of micronutrient application on plant growth attribute in blackgram (Var. Prasad)

Abstract

The field experiment was conducted during rabi season of 2013-2014 at the research plot of Department of Seed Science & Technology, Central Research Station, OUAT, Bhubaneswar, Odisha. This field investigation was carried out with the objectives of improving the efficacy of inoculated Rhizobium on plant growth attributes in black gram cv. Prasada by application of micronutrients. The experiment was laid out in 3×2 m2 plots in a randomized complete block design with 3 replications to assess the effect of different micronutrients both as single and in combinations. Shortest days to 50% flowering (32.67 days) was resulted from soil application of mixture of zinc sulphate @ 25 Kg/ha and borax @ 10 Kg/ha followed by soil application of zinc chelate @ 500 gm/ha. Maximum plant height (26.23 cm) was recorded with soil application of zinc sulphate @ 25 Kg/ha which was at par with soil application of mixture of zinc sulphate @ 25 kg/ha and borax @ 10 kg/ha and seed treatment with mixture of ammonium molybdate @ 5gm/Kg seed and cobalt nitrate @ 1 gm/Kg seed.