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Plant Biodiversity and Its Distribution Pattern Around the Homestead Pondsite

N. S. Sarmin
Lecturer
Department of Agroforestry and Environment, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur-1706, Bangladesh.

M. G. Miah
Professor
Department of Agroforestry and Environment, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur-1706, Bangladesh.

T. Ahamed
Assistant Professor
Department of Agroforestry and Environment, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur-1706, Bangladesh.

Q. A. Khaliq
Professor
Department of Agronomy, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur-1706, Bangladesh.

M. F. Hossain
Associate Professor
Department of Agroforestry and Environment, Sher-e Bangla Nagar Agricultural University, Sher-e Bangla Nagar, Dhaka-1207

Abstract/ Executive Summary:

The present study was undertaken in two selected upazila namely Sadar and Chirirband at Dinajpur district. Data were collected from 90 randomly selected homestead agro forestry practicing farmers (having a pondsite in their homestead) with the help of interview schedule during March to June 2007. The study was carried out to identify different plant species being grown in the homestead pondsite, their relative prevalence, species diversity, management perspective and different problems during plantation. A total number 47 tree species were recorded from the homestead pondsite of the study area of which 20 were fruit, 19 were timber and fuel species and 8 were medicinal species. Among the tree species the most prevalent fruit species was mango (2.28) followed by banana (1.16), timber and fuel species was bamboo (1.38) followed by mahagoni (0.25), and medicinal species was sajna (0.0481. A total of 24 different vegetables and spices were identified in the studied pondsites. Among the vegetables country bean was grown most frequently followed by bottle gourd, sweet gourd etc. Pondsite was the largest microsite (average size 30.31 decimal) and the area of pondsite increased as the farm size increased. Among the different orientations of a pondsite, north orientation has highest species diversity. Among the plant types, the diversity index of fruit and medicinal species were found the highest and the lowest, respectively. Pruning (82.22%) was found an important tree management practice. The most severe problem faced by the farmers was soil erosion around the pondsite (40%).

Keywords: Plant biodiversity, Medicinal plants, Vegetables, Homestead pondsite

Location: Sadar and Chirirband at Dinajpur district

Start Date: 00-03-2007

End Date: 00-06-2007

Program Area: Conservation and Biodiversity

Commodity: Vegetables, Medicinal Plants

Objectives:

To identify different plant species being grown in the homestead pondsite, their relative prevalence, species diversity, management perspective and different problems during plantation.

Methodology:

Data were collected from four unions under two selected upazilas of Dinajpur district namely Sadar and Chirirbandar. A sample of 90 households were selected randomly from 15 villages (of those 4 unions), 6 from each village with equal probability to each farm category by PRA (Participatory Rural Appraisal) method. Data were collected from March to June 2007. The collected data were coded and tabulated for analysis. In this study, the variables were age, education level, occupation, farm size, homestead category, homestead area, homestead pond area, number of different plant species and their distribution pattern at the homestead pondsite. Existing number of trees (fruits, forests and medicinal) along with saplings and young trees were counted. It was measured by number. Relative prevalence of tree species was determined by multiplying the number of trees per homestead pondsite by the percentage of farm containing that species. It was calculated by the following formula. Relative prevalence = Number of trees per farm x percent of farm with the species. Species richness is the number of tree species within an area. After completion of data collection the responses were coded, tabulated and analyzed following MS-Excel and SPSS computer programs according to the objectives of the study.

Source of Information: J. Agric. Edu. Technol., 11(1&2: 7-14, December 2008.)

Article Link (Online Journal):

Funding Source:

1.

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Pondsite (30.31 decimal) was the largest microsite. Most of the homestead pondsite area had mixed vegetation with various annual and perennial trees and seasonal vegetables. Among the identified 47 different tree species 42.56% were fruit, 40.43% were timber/fuel species and 17.02% were medicinal species. The highest species diversity was round in north orientation (2.13) and the lowest in south orientation (2.08). Among the plant types, the diversity index of fruit and medicinal plant species were found highest and lowest regardless or orientations, respectively. Among the fruit, timber/fuel and medicinal species the most prevalent species were mango, bamboo and drumstick, respectively. A total of 24 different vegetable and spices were identified in the studied pondsite. The common vegetables grown at the pondsites were bottle gourd, country bean, barbati, brinjal, carrot etc. as winter vegetables; sweet gourd, white gourd, red amaranth, ridged gourd, indian spinach etc. as summer vegetables and papaya, taro, lal shak etc. as year round vegetables.

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