Redgram (Cajanus cajan), a vital Kharif crop, frequently faces yield instability due to erratic rainfall and poor plant population survival. To address these challenges, a two-year field experiment (2022–2023) was conducted at Tamil Nadu Agricultural University (TNAU), Coimbatore, to evaluate the feasibility of transplanting as a contingency measure. The study examined the effects of nursery techniques (pro-trays vs. polyethylene bags), seedling age (20 vs. 25 days after sowing), and land configuration (flatbed vs. ridge transplanting) on crop productivity. Results indicated that transplanting significantly outperformed direct sowing, achieving an additional seed yield of 378 kg/ha (30.2%), primarily driven by a 21.6% increase in pods per plant. This yield advantage remained consistent regardless of seedling age or nursery material. Furthermore, seedlings raised in polyethylene bags and transplanted onto ridges yielded 15.5% higher than those on flatbeds. The study concludes that transplanting polyethylene bag-grown seedlings on ridges is a viable technology for stabilizing plant populations and maximizing redgram yields under the agro-climatic conditions of Tamil Nadu.