Six field experiments were conducted at Tamil Nadu Rice Research Institute, Aduthurai to evolve suitable zinc fertilization method for rice - rice (Oryza sativa L.) cropping system in Cauvery delta zone. The treatment includes: T₁ : Control, T₂ : 100 g zinc sulphate (ZnSO₄)/cent in nursery alone., T₃ : root dipping alone in 2 % zinc oxide (ZnO) solution, T₄ : 25 kg ZnSO₄ ha^-1, T₅ : 37.5 kg ZnSO₄ ha^-1, T₆ : 25 kg ZnSO₄ ha^-1+ Farm Yard Manure (FYM) 12.5 t ha^-1, T₇ : 25 kg ZnSO₄ ha^-1 + Green Leaf Manure (GLM) 6.5 t ha^-1, T8 : Tamil Nadu Agricultural University Micro Nutrient (TNAU MN) mixture 25 kg ha^-1 as Enriched Farm Yard Manure (EFYM), T₉ : TNAU MN mixture 37.5 kg ha^-1 as EFYM, T₁₀ : Foliar spray of 0.5% ZnSO₄ + 1 % urea at tillering and panicle initiation stage, T11 : 100g ZnSO4 /cent in nursery alone + Foliar spray of 0.5 % ZnSO₄ + 1 % urea at tillering and panicle initiation stage (T₂+ T₁₀), T₁₂ : root dipping alone in 2 % ZnO solution + Foliar spray of 0.5 % ZnSO₄ + 1 % urea at tillering and panicle initiation stage (T₃ + T₁₀), T₁₃: 100 g ZnSO₄ /cent in nursery alone + root dipping alone in 2 % ZnO solution + Foliar spray of 0.5 % ZnSO₄ + 1 % urea at tillering and panicle initiation stage (T2 + T3 + T10). The treatments T5, T6, T7 and T₉ were skipped in rabi season to know the residual effect of these treatments in the subsequent season. Among the treatment combinations, application of 25 kg ZnSO₄ ha^-1 + FYM 12.5 t ha-1 recorded higher grain yield in both kharif (6232 kg ha^-1) and rabi (6236 kg ha^-1) seasons. The same treatment combination recorded higher Zn content and Zn uptake as well. Regarding soil nutrient content, the same treatment recorded higher N, P and K content. This treatment was followed by application of 25 kg ZnSO₄ ha^-1 + green leaf manure 6.5 t ha^-1. The experimental findings suggested that combination of organic and inorganic sources not only increased the yield but also improves soil health in Cauvery delta zone.