A Half-yearly Peer Reviewed Journal of Bangladesh Forest Research Institute
Germination percentage of Tamarindus indica L. seeds were observed with 4 pre-sowing treatments viz, i) soaked in cow urine for 24 hours, ii) soaked in cow dung slurry for 24 hours, ii) soaked in tap water for 24 hours, iv) soaked in hot water (100 0 C) for 30 seconds and followed by one hour in tap water and v) control, in the nursery of Bangladesh Forest Research Institute, Chattogram. Growth performances of seedlings were also determined in nursery and field conditions. The germination test was conducted in nursery bed filled with soil and decomposed cow dung at a ratio of 3:1. The growth performance of seedlings were determined by transferring the young seedling after 30-45 days of germination having 5-6 leaves from germination bed to polybags (15 cm × 23 cm) filled with soil mixed with cow dung. Growth performance in the field was observed by out planting one year old seedling at 1.5 m × 1.5 m, 2.0 m × 2.0 m and 2.5 m × 2.5 m spacing. Germination percentage was significantly (p<0.05) influenced by pre-sowing treatments and highest germination percentage (86%) was obtained in cow urine treatment for 24 hours and lowest (44%) was found in hot water treatment. Growth performance of seedlings was also influenced by pre-sowing treatments in the nursery and highest vigor index was observed in cow urine treatment (3988) and lowest in hot water treatment (1629). Survival percentage of seedlings was highest 98% at 2.0 m × 2.0 m spacing in the field and average height was more than 68 cm after 12 months of out planting. Therefore, pre-sowing treatment of seed in cow-urine for 24 hours suggested for nursery raising and one old year seedlings may be planted at 2.0 m × 2.0 m spacing in the field for successful plantation of the species.
Germination percentage of Tamarindus indica L. seeds were observed with 4 pre-sowing treatments viz, i) soaked in cow urine for 24 hours, ii) soaked in cow dung slurry for 24 hours, ii) soaked in tap water for 24 hours, iv) soaked in hot water (100 0 C) for 30 seconds and followed by one hour in tap water and v) control, in the nursery of Bangladesh Forest Research Institute, Chattogram. Growth performances of seedlings were also determined in nursery and field conditions. The germination test was conducted in nursery bed filled with soil and decomposed cow dung at a ratio of 3:1. The growth performance of seedlings were determined by transferring the young seedling after 30-45 days of germination having 5-6 leaves from germination bed to polybags (15 cm × 23 cm) filled with soil mixed with cow dung. Growth performance in the field was observed by out planting one year old seedling at 1.5 m × 1.5 m, 2.0 m × 2.0 m and 2.5 m × 2.5 m spacing. Germination percentage was significantly (p<0.05) influenced by pre-sowing treatments and highest germination percentage (86%) was obtained in cow urine treatment for 24 hours and lowest (44%) was found in hot water treatment. Growth performance of seedlings was also influenced by pre-sowing treatments in the nursery and highest vigor index was observed in cow urine treatment (3988) and lowest in hot water treatment (1629). Survival percentage of seedlings was highest 98% at 2.0 m × 2.0 m spacing in the field and average height was more than 68 cm after 12 months of out planting. Therefore, pre-sowing treatment of seed in cow-urine for 24 hours suggested for nursery raising and one old year seedlings may be planted at 2.0 m × 2.0 m spacing in the field for successful plantation of the species.
Coastal plantations mainly with SiMHerafifl fluids have been established by the Forest
Department on the newly accreted lands in the coastline of Bangladesh since 19*65-66, An
underplanting trial of 11 mangrove species was conducted in the existing S. ajritila plantations
along the western coastline [Patuakhali and Bhda) to assess the site-suitability and growth
performance of these species. Sun ival, height and diameter growth data from 16-21 years old
experimental stands of these species were analyzed. The highest survival was found in
EYCurrmu agallodin (62% and 59%) followed bv fiws (51% and 39%) and Xj/lucujpj(s
wAorigeusrf; (48% and 26%) among the I rec species at Rangaba 11 island of Patuakhali and Char
Kukri-Mukri island of Bhcla district. Among the shrub and palm species, the highest survival
was found in twruridu/mw (63%) followed bv fVwju.T ptiudtWJ (58%) and Nyjw
fndieain (4Q%) at Rangabali and the highest survival in P. p/dtithmti (71%) followed be N.
fnitnnus (56%) and A. cornkwtaftmj (46%) at Char Kukri-Mukri. The mean maximum height
growth was observed in E. (9.31 m and 9.29 m) followed by X. Miefcoji^usjs (6.84 m and
6.84 m) and H. Jews (6.19 tn and 5.65 m) in both Ute areas. The mean maximum diameter
growth was also observed in F. flrgnPoc/ifT (9.83 cm and 9.49 cm) followed by X, JMcAragrtisrs (7,97
cm and 7.34 cm) and (5,87cm and 5,34 cm) in bold Ihe nreas. Among the shrub and
palm species, A. curwkwMfwwr, P. pultidier and N. fridtmrs showed good height growth
performance in both die study areas, Therefore, these promising mangrove species (E. rtgiTifodm,
IE follies, X. luekiut^Hsis, A. amtfoulaiittH, P. pithkfcsw and M/hrfk’ims) may be suitable for raising
second rotation crops inside S. tqvtaJa plantations for sustainable management of coastal
forests
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