Effect of nano NPK and straight fertilizers on yield, economics and agronomic indices in baby corn (Zea mays L.)

Abstract

A field experiment was conducted in sandy clay loam soil at Campus Farm, M.S. Swaminathan School of Agriculture, R. Sitapur, CUTM, Paralakhemundi to study the fertilizer use efficiency of nano NPK and straight fertilizers with and without organic sources on baby corn (Zea mays L.) during winter of 2018-19. The experiment was laid out in randomized complete block design with three replications and 12 treatments. The treatments comprise of nano NPK, straight fertilizers and organics (vermicompost and azotobacter) applied as alone and combinations. The baby corn and green forage yield was significantly influenced by use of nutrient management treatments. Application of 125 % recommended fertilizer dose (RFD) as straight fertilizer through urea, single super phosphate and muriate of potash registered the maximum gross return (Rs. 412498.00/ha), net return (Rs.266528.00/ha) and B:C ratio (2.83). It was followed by application of 100 % RFD (SF) and 75% RFD (SF) + 25% recommended dose of nitrogen through vermicompost + Azotobacter. Amongst 12 treatment variables, the least performance was exhibited under control for all the parameters. Amongst different nutrients management treatments, the maximum partial factor productivity, agronomic efficiency and apparent nutrient recovery was recorded by application of nano NPK alone while nutrient use efficiency was the highest in 75 recommended fertilizer dose (Nano NPK) + 50 % (SF).