Vol. 12, Issue 6 (2023)

This study aimed to find out best organic manure or manure combination for obtaining the maximum growth from okra, and to standardize the total NPK requirement through organic manures. The study was conducted in the South farm of the School of Agricultural Sciences, Karunya institute of Technology and Sciences, Coimbatore during the Rabi season of 2022. The experimental design consisted of ten treatments, including a control T₁₀ in a Randomized Complete Block Design (RCBD) that was replicated thrice. The combinations of FYM, Vermicompost, Composted poultry manure and groundnut cake were practiced in T₅ to T₉, and the other four treatments were based on different organic manures, consisted control in (T₁₀). Treatment 7 recorded maximum number of fruits plant^-1 (12.33) and maximum weight of fruits plant^-1 (203.55 g), T₆ recorded the maximum length of fruits (11.70 cm), T₁₀ recorded the maximum girth of fruits (7.2 cm), T₃ recorded the maximum weight of fruit (19.90 g), T₇ recorded the maximum yield at harvest (16 t ha^-1) during the rabi season of 2022.