Abstract:The present experiment was conducted during Kharif 2020-21 and 2021-22 at Zonal Agricultural and Horticultural Research Station, Shivamogga, Karnataka, to evaluate the effect of Integrated Nutrient Management on growth and yield of underexploited vegetable crop yardlong bean cv. Arka Mangala under naturally ventilated polyhouse. The experiment was laid out in randomized complete block design (RCBD) with three replications and eight treatments viz. T1 - 100 % Recommended Dose of Fertilizer (RDF-25:75:60 NPK, kg ha-1 ), T2 -100 % RDF + Effective Microbial Consortia (EMC)+ Vegetable Special (VS) , T3 - 125 % RDF, T4 - 150 % RDF, T5 - 175 % RDF, T6 - 125 % RDF + EMC+ VS , T7 - 150 % RDF +EMC+VS , T8 - 175 % RDF+EMC+ VS. The integrated treatment combinations involve both organic and inorganic source of nutrients which significantly influenced the growth and yield attributes. The results from the pooled data of two year revealed that, all the growth and yield traits were markedly influenced by the integrated nutrient management practices. Among different treatments, significantly higher plant height (247.96 cm), number of primary branches (8.54), initiation of flowering (38.29 days), to fifty per cent flowering (43.48 days), to first harvest (52.83 days), number of pods per plant (25.17), pod length (74.56 cm), pod girth (3.98 cm), average pod weight (35.54 g), yield per plant (664.17 g) and higher pod yield per 1000 m2 (2171.96 kg) were recorded with treatment 150 % RDF + EMC+ VS. Thus Integrated Nutrient Management practices increased the growth and yield attributes of Yardlong bean and among compared treatments, T7 *-150 % RDF + Effective Microbial Consortia (EMC)+ Vegetable Special (VS), found to achieve the maximum productivity of Yardlong bean. The evaluation of production economics revealed that growing of Yardlong bean with said treatment (T7 ) could be the most remunerative option with a highest benefit: cost of 3.15.