Study of Papaya (Carica papaya Linn.) Germination Index and Seedling Growth in Agriculture Waste-Based Media and Plant Growth Regulators

‘Red Lady’ papaya is being cultivated through its seed commercially. It’s germination, and seedling growth need to be improved for a satisfactory result. This experiment was set up in factorial-CRD and three replications with six various agriculture waste based growing media including Soil, Soil + Farm Yard Manure (FYM), Soil + Vermicompost, Soil + Rice husk, Soil + Cocopeat, and Soil + FYM + Rice husk + Vermicompost + Cocopeat in an equal ratio (1:1) and five levels of plant growth regulators, GA3 (100 ppm, 150 ppm), NAA (100 ppm, 150 ppm), and GA3 100 ppm + NAA (100 ppm) were used for the treatment of seeds during. The experiment was set up with 36 treatment combinations and three replications in factorial-CRD. It was found that the mixed growing media (Soil + FYM + Rice husk + Vermicompost + Cocopeat) resulted in increasing germination index, root length, root diameter, shoot length, and shoot diameter significantly in comparison with control. Based on the PGRs, the combination of GA3 and NAA (100 ppm) showed the best result. It was found that the Soil + FYM + Rice husk + Vermicompost + Cocopeat was an appropriate culture media for Papaya germination. Meanwhile, GA3 100 ppm + NAA 100 ppm was the most effective treatment for enhancing the germination of papaya seedlings. Therefore, the seedling's development through mixed growing media with an optimum solution of GA3 and NAA is helpful for papaya seeds.