Grain yield and economics of mungbean (Vigna radiata L.) as influenced by planting techniques, Rhizobium inoculation and micronutrient levels

A field experiment was conducted to study the response of ‘SML 668’ mungbean (Vigna radiata L.) as influenced by planting techniques, Rhizobium inoculation a nd micronutrients level (Fe and Mo) at Crop Research Centre of Sardar Vallabhbhai Patel University of Agriculture and Technology, Modipuram, Meerut (Uttar Pradesh) during 2009 and 2010. Three planting techniques (flat bed, raised bed and broad bed), two treatments of seed inoculation (with and without Rhizobium inoculation) and four micronutrient levels (Control, Fe at 0.25% foliar spray at 25 and 40 DAS, Mo at 0.25% foliar spray at 25 and 40 DAS and Fe + Mo @ 0.25% foliar spray at 25 and 40 DAS) were evaluated in a split-split plot design with three replications. Significantly higher grain yields (of 1122 and 1207 kg/ha) were recorded under broad bed in comparison to flat bed during both the years. Similarly, a significant increment of 19.7 and 17.3% in grain yield was recorded following Rhizobium inoculation over uninoculed control in 2009 and 2010 respectively. Highest grain yield of 1235 and 1304kg/ha was also recorded under Fe + Mo at 0.25% foliar spray carried out at 25 and 40 DAS during 2009 and 2010 respectively. Similar was the case for BCR for the above treatments (the corresponding values for the above treatments were 2.93 and 3.22 for planting techniques, 3.26 and 3.53 for Rhizobium inoculation and 3.50 and 3.75 for Fe + Mo during 2009 and 2010 respectively).