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Study on Seedling Growth of Important Timber Trees in Agroecologically Different Area in Bangladesh

M.M. Howlader
On-Farm Research Division, Bangladesh Agricultural Research Institute, Daulatpur Khulna

G.M.M Rahman
Department of Agroforestry, Bangladesh Agricultural University, Mymensingh

M.M. Hossain
On-Farm Research Division, Bangladesh Agricultural Research Institute, Daulatpur Khulna

M.R. Khatun
Agricultural Training Institute, Daulatpur Khulna

H.M.K. Bashar
On-Farm Research Division, Bangladesh Agricultural Research Institute, Patuakhali.

Abstract/ Executive Summary:

A study on seedling growth of four important timber trees viz. mahogony (Swietenia mahogoni), akashmoni (Acacia auriculiformis), raintree (Albizia saman) and rajkoroi (Albizia richardiana) at three growth stages (three, eight and twelve months aged) in three agro ecologically different area was carried out during 2003. Three agro-ecologically different areas are namely Mymensingh (Old Brahmaputra Flood Plain, AEZ 09), Bagerhat (Low Ganges River Flood Plain, AEZ 12) and Pirojpur district (Ganges Tidal Flood Plain, AEZ 13). The aim of the experiment is to investigate the growth behavior of important timber seedling in different area in Bangladesh and find out the best site (district) where specific important timber seedling grows well. Data collection was started on 20 June, 2003 and completed on 20 July, 2003. Data on height, base diameter, fresh weight and dry weight of each selected species was taken. Soil and climate of different region influenced the growth of seedlings significantly. Seedling of mahogony gained highest growth in Pirojpur region followed by Mymensingh and Bagerhat region. Akshmoni showed the highest growth performance in Mymensingh , medium growth in Pirojpur and the lowest growth in Bagerhat region. Raintree seedling growth found highest in Pirojpur region, followed by Bagerhat and Mymensingh region. The highest growth of rajkoroi seedling was found in Bagerhat region while medium growth in Mymensingh and the lowest in Pirojpur region.

Keywords: Timber, Seedlings, Age, Growth, Region.

Location: Trishal thana in Mymensingh district, Morrelganj thana in Bagerhat district and Sarupkathi thana in Pirojpur district.

Start Date: 00-01-2003

End Date: 00-12-2003

Program Area: Seed Technology

Commodity: Seedling

Objectives:

1. To elucidate (i) the growth behavior of important timber seedling in different area in Bangladesh, and (ii) to find out the best site (district) where specific important timber seedling grows well.

Methodology:

The experiment was conducted at nine nurseries comprising three from each of Trishal thana in Mymensingh district, Morrelganj thana in Bagerhat district and Sarupkathi thana in Pirojpur district. The sites were selected on the basis of the availability of nursery. In each nursery of every district four species of different ages (three months, eight months and twelve months) timber seedlings namely mahogany (Swietenia mahogoni), akashmoni (Acacia auriculiformis), raintree (Albizia saman) and rajkoroi (Albizia richardiana) were selected by random sampling. Data on height, base diameter, fresh weight and dry weight was taken for each selected species. Height and base diameter was measured from standing seedlings in nursery. Then seedling species of different ages were collected from each selected nursery of the respective thana and taken fresh weight by balance. The collected samples were dried in sun light over a period of one month and dry weight was taken in the laboratory of Agroforestry Department, Bangladesh Agricultural University, Mymensingh. The time of sowing and age of seedling was recorded from respective nursery owner. Data were collected from 20 June, 2003 to 20 July, 2003. Data on various growth parameters under the study were analyzed statically by using MSTAT C. The mean differences were evaluated by least significant difference test The physical properties of soil of three districts were different. The soil of Mymensingh district except some minor areas of hill in the northern border is formed of with recent and sub-recent alluvial sediments. The soil of Trisal thana belongs to Mymensingh was same. The soil of Bagerhat district was mainly non calcareous clay, but the working thana, Morrelganj under the same district was highly saline tidal clay. The soil of northern part of the Pirojpur district was non saline, tidal silty clay while the soil of southern part was poorly drained, tidal clay of the old Lower Meghna Tidal Flood plain. The soil of Sarupkhati, the representative thana of Pirojpur was non saline, tidal silty clay.

Source of Information: J. Agrofor. Environ. 7 (1): 15-18, 2013; ISSN 1995-6983

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

Growth performance of akshmoni was found highest in Mymensingh region and lowest in Bagerhat region while the seedlings of Pirojpur region exhibited medium growth performance. Mahogony and raintree seedling showed best performance in Pirojpur region. But mahogony seedling gained poor growth in Bagerhat region and raintree gained poor growth performance in Mymensingh region. Seedling growth of rajkoroi was found highest in Bagerhat region and lowest in Pirojpur region.

Knowledge Management: Journal