Abstract:
This study was conducted to find out the most suitable seed treatment method to break
dormancy and nursery media for the germination of Eclipta prostrata seeds. Two separate
experiments were carried out; experiment one was selection of most suitable seed
treatment method which comprised with four sub experiments namely, different water
soaking treatments, alternative wetting and drying treatments, sulphuric and nitric acid
treatments and gibberelic Acid treatments. Experiment two was to select the suitable
nursery media for seed germination and seedling growth using five different growing
media with 5 replicates. All the experiments were carried out using Completely
randomized design with factorial arrangement where necessary. Result revealed that the
highest germination percentage was observed in seeds treated with gibberelic acid (900
ppm in 14 hrs dipping period) (90%) followed by seeds soaked in water for 12 hrs (80%)
and there were no significant (p ≥ 0.05) difference in seed germination between Gibberelic
Acid and water soaking treatments compared to control (40%). Nursery media of cow
dung: sand (1:1) showed a higher seed germination (77%) and significantly (P≤ 0.05)
higher seedling height (5.84 cm) when compared to other treatments at four weeks after
seed sowing. Therefore, Eclipta prostrata seeds soaked in water for 12 hrs could be used
as most promising, economically viable seed treatment method and cow dung: sand (1:1)
could be used as the most suitable nursery media to obtain a healthy and vigorous seedling
of Eclipta prostrata.
