Effect of planting date, seed rate and row spacing on nodulation efficiency of bold seeded spring mungbean [Vigna radiata (L.) Wilczek] in Bundelkhand region of India

A field experiment was conducted during spring/summer season of 2007 and 2008 at Crop Research Centre of Institute of Agricultural Sciences, Bundelkhand University, Jhansi (U.P.), to study the effect of planting date, seed rate and rows pacing on yield and yield attributes of bold seeded mungbean. Four planting dates (February 25, March 11, March 26 and April 10), three seed rates (30, 40 and 50 kg/ha) and two row spacing (20 cm and 30 cm) were tested. Grain yield increased with delay in planting up to March 11, thereafter it declined significantly and drastic reduction was observed beyond March 26. Seed rate of 40 kg/ha and row spacing of 20 cm was found to be optimum for higher yield of bold seeded spring mungbean. Nodulation studies were affected significantly due to different planting dates but row spacing and seed rate does not influenced significantly.