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DETERMINATION OF SEED DENSITY OF SEVERAL SPECIES OF FOREST TREES TO IMPROVE THE SUCCESSFUL SEED GERMINATION
Naning Yuniarti, Nurhasybi Nurhasybi

Last modified: 2019-06-25

Abstract


The successfull of tree seed germination for planting programme depends on a few factor including tree seed density for seed sowing. The aim of this research was to determine the seed density for seed sowing of 5 tree species including white jabon (Anthocephalus cadamba (Roxb) Miq.), jelutung (Dyera polyphylla Miq.), kayu bawang (Azadirachta excelsa (Jack) Jacobs), trema (Trema orientalis Linn. Blume), and bambang lanang (Michelia champaca Linn.).    The treatments for seed density covered 5 phases (d0, d1, d2, d3, d4) based on the germination percentage (GP). Seedlots variation was derived from 5 seed aging treatments (0, 48, 96, 144, and 192 hours).   The results showed: (1) seed density of white jabon was 0.1 gram of seed / 300 cm2 with pure live seeds of 1140 seedlings/ 0.1 gram of seed; (2) seed density of bambang lanang was 100 seeds / 300 cm2 with GP of 58%; (3) seed density of jelutung seeds with 85% of GP was 50 seeds / 600 cm2; (4) seed density of kayu bawang with 83% of GP was 50 seeds / 600 cm2 and (5) seed density of trema with 78% of GP was 100 seeds / 600 cm2.


Keywords


seed; density; germination

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