Impact of Organic Nutrient Management on Productivity, Nutrient Uptake and Economics of Finger millet in Groundnut (Arachis hypogaea L.) – Finger Millet (Eleusine coracana L.) Cropping System

A field experiment was conducted during rabi 2015 and rabi 2016 in farmers’ field of Chokkahalli village of Chintamani taluk, Chikkaballapura district coming under eastern dry zone Karnataka to study the effect of bio-digested liquid manures on productivity, nutrient uptake and economics of finger millet. Significantly higher grain and straw yield (3787 and 5125 kg ha-1) was recorded with the application of EBDLM @ 50 kg N equivalent ha-1 + 3 sprays of panchagavya @ 3 %, which was on par with application of EBDLM @ 50 kg N equivalent ha-1 + 3 sprays of vermiwash @ 3 % (3695 and 5169 kg ha-1). Significantly lower grain yield (3288 and4930 kg ha-1) was recorded with POP (50:37.5:40 Kg N: P2O5:K2O ha-1) and also significantly higher uptake of nitrogen, phosphorus and potassium (129.93, 12.7 and 82.10 kg ha-1, respectively) was noticed with EBDLM @ 50 kg N equivalent ha-1 + 3 sprays of panchagavya @ 3 % as compared to other treatments and it was on par with EBDLM @ 50 kg N equivalent ha-1 + 3 sprays of vermiwash @ 3 % (125.48,11.87 and 79.4 kg ha-1, respectively). However, significantly lower uptake of nutrients (101.22, 8.70 and 66.55 kg ha-1, respectively) was noticed with POP (50:37.5:40 Kg N: P2O5:K2O ha-1). Further, Application of EBDLM @ 50 kg N equivalent ha-1 + 3 sprays of panchagavya @ 3 % recorded higher gross returns (Rs.1,43,167 ha-1), net returns (Rs.1,13,671 ha-1) and B:C ratio (3.85) followed by EBDLM @ 50 kg N equivalent ha-1 + 3 sprays of vermiwash @ 3 % (Rs.1,40,332 ha-1, Rs.1,11,146 ha-1 and 3.81, respectively). Whereas, POP (50:37.5:40 Kg N: P2O5:K2O ha-1) recorded lower gross returns (Rs. 1,24,286 ha-1), net returns (Rs.93,725 ha-1) and B:C ratio (3.06) when compared to all other treatments.