Effect of planting density and crop geometry on yield, yield attributes and economics of taro [Colocasia esculenta var. antiquorum (L.) Schott.]

An experiment on planting density and crop geometry in taro was conducted during 2025 on loamy soil in randomized block design at Regional Research Station, Madhopur, West Champaran (Bihar) under Dr. Rajendra Prasad Central Agricultural University, Pusa (Bihar) to find out the effect of planting density and crop geometry on yield, yield attributes and economics of taro. It was found that the number of cormels per plant and cormel yield per plant due to high planting density and crop geometry was reduced significantly and the reductions were 1.19 to 25.61 and 3.14 to 30.24 per cent, respectively with respect to normal planting in taro but total cormel yield per hectare and gross return were significantly increased and the increase was to the tune of 4.37 to 23.39 per cent as compared to normal planting. Similarly, net return and B:C ratio due to high density planting increased to the tune of 3.81 to 29.89 and 2.2 to 15.81 per cent, respectively with respect to normal planting. Increase in yield due to high density planting in mother corm ranged from 6.08 to 49.95 per cent with respect to normal planting.