Pengaruh Skarifikasi Fisik Dan Media Kecambah Terhadap Perkecambahan Benih Johar (senna Siamea Lamk)

Abstract
Johar (Senna siamea Lamk) is one of the seeds that takes a long time to germinate, one of the factors
that can overcome the problem of dormancy in johar seeds is the scarification technique or pre?treatment to accelerate seed germination. This research was conducted for 2 months from the
beginning of September to October 2022 in the permanent nursery of BPDAS Palu Poso, Tadulako
University, Palu. This study used a completely randomized design with a factorial pattern consisting
of 2 factors. The first factor was seed scarification consisting of S0 = without scarification, S1 = seeds
soaked in hot water with an initial temperature of 100oC for 24 hours, S2 = seeds soaked in distilled
water at 25oC for 24 hours, S3 = seeds soaked in young coconut water with a temperature of 25oC for
24 hours. The second factor germination media consists of. M0 = soil, M1 = soil mixed with rice husk
charcoal ratio (2:1), M2 = soil mixed with sand ratio (2:1), so there are 12 treatment combinations
and repeated 3 times and each repetition consists of 10 seeds, then the number 360 seeds used. The
results of the analysis of variance showed that the best physical scarification treatment was treatment
S2 = seed soaked in aquadest at 25oC for 24 hours, germination percentage was 64.4%, germination
rate was 8.14 days, root length was 16.1 cm, wet weight was 7.67 g . Significantly different from the
treatments S0, S1, and S3. The best germination medium in treatment M1 = soil mixed with rice husk
charcoal, germination percentage was 55.83%, root length was 15.9 cm, and basal weight was 7.49 g.
Significantly different from the treatment of M0 and M3
Keywords : Dormancy, germination, johar, scarification