Study on the effect of fertilizer on the growth of Lumnitzera littorea (Jack, Voigt. 1845) at the nursery stage in Can Gio mangrove biosphere reserve, Ho Chi Minh city

Abstract

The Lumnitzera littorea ((Jack) Voigt. 1845) is one of the 35 mangrove trees in the Can Gio mangrove ecosystem. The experiment was carried out from December 2023 to June 2024 with 2 experimental formulas (arranging 5 experiments/formula), each experiment consisted of 90 Lumnitzera littorea according to 4 different top dressing regimes to evaluate the effect of fertilizer on the growth of 3-month-old the Lumnitzera littorea. The results of the Lumnitzera littorea nursery according to CT I had an H_vnTB of 12.01 ± 2.48 cm, a D_oTB of 3.26 ± 0.87 mm and a Lumnitzera littorea nursed according to CT II had an H_vnTB of 13.54 ± 4.35 cm, a D_oTB of 3.60 ± 1.28 mm. The best experiment for growth was NT 1 mixed medium (H_vnTB = 15.10 ± 4.99 cm, D_oTB = 3.85 ± 1.25 mm). The number of surviving Lumnitzera littorea was 784 (the survival rate in CT I was 87.3% and CT II was 86.9%), with only the Lumnitzera littorea of type I and II. The Lumnitzera littorea grows slowly, with a high natural mortality rate (12.8% on average).