INTERACTIVE EFFECT OF PLANTING DISTANCE, IRRIGATION TYPE AND INTERTIDAL ZONE ON THE GROWTH OF GREY MANGROVE SEEDLINGS IN QESHM ISLAND, IRAN

The interactive effect of planting distance, irrigation and intertidal zone on the growth of grey mangrove (Avicennia marina) seedlings was investigated in Qeshm Island area for a period of 18 months. A total of 720 seedlings in two groups were planted at different parts of the intertidal zone, with...

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Bibliographic Details
Published in:Journal of tropical forest science 2009-04, Vol.21 (2), p.147-155
Main Authors: Mohammadizadeh, M, Farshchi, P, Danehkar, A, Mahmoodi-Madjdabadi, M, Hassani, M, Mohammadizadeh, F
Format: Article
Language:English
Subjects:
Fresh water
Intertidal zones
Irrigation water
Marinas
Plantations
Planting
Salinity
Sea water
Sediments
Seedlings
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Summary:The interactive effect of planting distance, irrigation and intertidal zone on the growth of grey mangrove (Avicennia marina) seedlings was investigated in Qeshm Island area for a period of 18 months. A total of 720 seedlings in two groups were planted at different parts of the intertidal zone, with two irrigation types and two planting distances. Based on ANOVA, the interactive effect of seedling planting distance, type of irrigation and intertidal zone on seedling growth criteria (stem diameter, height and ratio of stem height to stem diameter) indicated a significant difference (p < 0.01). Stem diameter increment of seedling flooded by sea water in lower intertidal zone with planting distance of 0.5 m was greater in comparison with the rest of the planted seedlings. Seedlings irrigated with fresh water in lower intertidal zone with planting distance of 0.5 m had the greatest stem height. The minimum ratio of stem height to stem diameter was found to be in seedlings flooded by sea water in lower intertidal zone and planting distance of 0.5 m. Results of the study could be applied to any other eco-region with the same or nearly the same ecological characteristics. Kesan interaktif jarak penanaman, pengairan dan zon antara perbani terhadap pertumbuhan anak benih bakau Avicennia marina dikaji di Pulau Qeshm selama 18 bulan. Sebanyak 720 anak benih yang dibahagikan kepada dua kumpulan ditanam di bahagian-bahagian berbeza zon antara perbani. Dua jenis pengairan dan dua jarak penanaman digunakan. Berdasarkan ANOVA kami dapati bahawa kesan interaktif jarak penanaman anak benih, jenis pengairan dan zon antara perbani terhadap kriteria pertumbuhan anak benih menunjukkan perbezaan signifikan (p < 0.01). Kriteria yang dikaji ialah diameter batang, ketinggian dan nisbah ketinggian batang kepada diameter batang. Peningkatan diameter batang anak benih yang ditenggelami air laut di zon antara perbani yang lebih rendah dengan jarak penanaman 0.5 m adalah lebih besar berbanding dengan anak benih lain. Anak benih yang diairi air tawar di zon antara perbani yang lebih rendah dan jarak penanaman 0.5 m mempunyai ketinggian batang yang paling besar. Nisbah minimum ketinggian batang kepada diameter batang dicerap pada anak benih yang ditenggelami air laut di zon antara perbani yang lebih rendah yang mempunyai jarak penanaman 0.5 m. Keputusan kajian dapat diguna pakai untuk kawasan lain yang mengalami ciri ekologi yang sama atau hampir sama.
ISSN:0128-1283
2521-9847