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Preparation of Upazila Land and Soil Resource Guide, Poba

Bhabanonda Basak
Senior Scientific Officer
Soil Resource Development Institute, District Office, Rajshahi

Md. Najmul Islam
Scientific Officer
Soil Resource Development Institute, District Office, Rajshahi

Abstract/ Executive Summary:

Poba upazila is situated in the southern part of Rajshahi district and covers an area of 29,783 ha. The upazila comprises of 8 unions and 2 pouroshobha having a population of 2,62,250 (2001). It lies in the physiographic unit of High Barind Tract, High Ganges Floodplain and Active Ganges Floodplain. Four land types namely highland, medium highland, medium low land and low land were identified. The textural classes of soil found were sandy loam, loam, clay loam and clay. Seven soil groups were identified. Nine major cropping patterns were found in the upazila. Total 127 soil samples were collected and analyzed and found that the soils of the upazila are deficient in N, P, K, Zn and B. Poba upazila was first surveyed in 1986 and updated in 2008.

Keywords: Poba, Land and soil, Soil fertility, Crop suitability

Location: Poba, Rajshahi

Start Date: 01-11-2008

End Date: 31-10-2009

Program Area: Resource Development and Management

Commodity: Land management

Objectives:

1. Soil and land resources inventory of Poba Upazila

2. Soil fertility assessment and fertilizer recommendation

3. Crop suitability assessment

4. Preparation of land and soil resource utilization guide with soil and land form map.

Methodology:

Field survey was conducted on the basis of semi-detailed soil survey method. Interpretative soil and land form map was prepared using 1:50000 aerial photographs. Soils were investigated following a catena and composite top soils were collected. The sampling frequency was 1 (one) sample per 200 ha. During survey, crops, cropping pattern, soil management data were collected by interviewing the farmers. Soil samples were analyzed for fertility assessment. Crop suitability for each land type was determined. Fertilizer recommendation for suitable crops was made. After compiling physical and chemical data sets the land and soil resource utilization guide was prepared.

Source of Information: Land and soil resource utilization guide, Poba, Rajshahi, 2009

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Poba upazila lies under the AEZ no. 27 (North Eastern Barind Tract) and AEZ no. 11(High Ganges River Floodplain) and AEZ no.10 (Active Ganges Flood Plain). In this upazila major land type recognized was highland comprising 44.7% of total area followed by medium highland comprising 20.7% of the total area. Major textural class also identified was loam covering 46.4% of total area followed by clay (18.8%) and clay loam(12.4%). Seven soil groups were identified namely Amnura, Ekdala, Sara, Gopalpur, Iswardi, Ghior and Ganges Silt of which Sara covers major area (24.0%) followed by Gopalpur (17.7%). For different land type and soil group, the crop suitability was determined for both irrigated and non-irrigated condition and a list of suitable crops for this area is attached in the guide. Nine major cropping pattern were found in the area of which Boro- Fallow- TA (Transplanted Aman) covered major area (19.9%) followed by Boro -Fallow- Fallow (11.5%). Fertilizer recommendation for suitable crops is given in the guide. The guide can be used for determining flood and drought, landslide, soil erosion, river bank erosion affected area. Demonstration site selection for technology transfer and local level development planning can be done with the help of this guide. Upazila land and soil resources carrying capacity can be estimated which would help in determining food deficit or surplus of the area.

Knowledge Management: Report/Proceedings