Sachin Kumar Verma, Shiv Kumar, & Yogendra Kumar. (2026). Evaluation of Cost, Returns, and Constraints in Ridge Gourd Cultivation: A Friedman Test Analysis in Hardoi District, Uttar Pradesh. International Journal of Agro Frontier Research and Innovation, 1(1), 5-9. https://doi.org/10.71371/ijafri.1105-09 (Original work published 2026)