Vol. 8, Issue 10, Part Q (2024)

To study the effect of different pre-sowing treatments and salinity levels on the growth parameters of Tectona grandis (Teak) seedling, a nursery experiment was conducted at the College of Horticulture and Forestry, Jhalawar, Rajasthan. The seedlings germinated under different pre-sowing treatments were subjected to different levels of salinity. Pre-sowing treatments consist of control (P 0), Alternate wetting and drying (12 hours) for 21 days (P 1), Soaking in cow dung slurry for 7 days (P₂) and Soaking in concentrated H₂SO₄ (75%) for 20 minutes (P₃). Salinity levels include control (0 dSm^-1), 3 and 6 dSm^-1. The experimental results showed that pre-sowing treatments had significant influence on growth attributes in seedlings. Among the four pre-sowing treatments, alternate wetting and drying for 12 hours done for 21 days (P₁) was found to be best in all growth attributes. The study also revealed that salinity levels had significant negative influences on all the growth attributes. No significant interaction between pre-sowing treatments and salinity levels on seedling growth parameters was observed during the study.