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Semi-detailed Soil Survey of Indigenous Potato Variety Growing Areas, Mymensingh & Kishoreganj

A.K.M. Muzibul Hoque
Senior Scientific Officer (Retd as Director)
Soil Resource Development Institute, District Office, Mymensingh.

M. Nazmul Hasan
Scientific Officer
Soil Resource Development Institute, District Office, Mymensingh.

Abstract/ Executive Summary:

In Mymensingh district 3 unions of Nandail and in Kishoreganj district 3 unions of Pakundia were identified as IPV growing areas. In Nandail physiographic units include Old Brahmaputra Floodplain (84%). In Pakundia physiographic units include Madhupur Tract (9%), Old Brahmaputra Floodplain (54%) and Young Brahmaputra Floodplain(20%). Six soil series were indentified in study area under Nandail of which Sonatala, Silmandi, Ghatail covers major area. The soils are loamy and clayey. Fifteen soil series were identified in the study area under Pakundia of which Sonatala and Silmandi covers major area. The soils are loamy and clayey. Potato suitability ratings have been assessed on the basis of individual soil series and land types depending on important land qualities under rainfed and irrigated conditions.

Keywords: Semi-detailed survey, IPV, Suitability

Location: Nandail, Mymensingh; Pakundia, Kishoreganj

Start Date: 15-11-1993

End Date: 31-11-1993

Program Area: Resource Development and Management

Commodity: Land management

Objectives:

1. Identification of soil series in Indigenous Potato Variety (IPV) growing areas

2. Mapping of the soils showing their spatial distribution

3. Evaluating suitability of individual soils for growing IPV under rainfed and irrigated conditions

4. Finally, analysis and evaluation of soils in terms of nutrient contents for fertilizer recommendation for IPV.

Methodology:

The basis of survey was aerial photo (1983,1:50,000 scale) interpretation supported by a planned field observations and laboratory analysis of representative topsoil composite samples. In general, field survey methods and descriptive terms were used according to USDA Soil Survey Manual. Traverse were planned at a distance of half-a-mile apart so as to examine the major landscape units and soils differentiated by analyzing aerial photos. The density of observation varied considerably from place to place depending on soil complexity. Following final checking and correlation, mapping units were drawn on aerial photos. The boundaries were later transferred to topographic map (1:50,000) to generate soil and land type map (1:50,000). Topsoil composite samples were collected @1 sample per 400 hectares. The laboratory analyses include pH, Organic carbon, active acidity and available nutrients (Ca, Mg, K, N, P, S, B, Cu, Fe, Mn, Zn)following standard procedures.

Source of Information: Report on Semi-detailed Soil Survey of Indigenous Potato Variety Growing Areas, 1993

Article Link (Online Journal):

Funding Source:

1. Danish International Development Agency (DANIDA)

Budget:

Total Budget (Tk.) :

Achievement/Findings:

In Mymensingh district 3 unions namely Nandail, Chondipasa and Achargaon of Nandail and in Kishoreganj district 3 unions namely Jangalia, Char Faradi and Egaara Sindur of Pakundia were identified as IPV growing areas. The study area covers an area of about 159 square kilometer. In Bagmara physiographic units include Ganges River Floodplain (75%) and Lower Atrai Basin (5%). In Pakundia physiographic units include Madhupur Tract (9%), Old Brahmaputra Floodplain (54%) and Young Brahmaputra Floodplain(20%). Six soil series were identified in study area under Nandail of which Sonatala (26%), Silmandi (27%), Ghatail (27%) covers major area. The soils are loamy and clayey. Fifteen soil series were identified in the study area under Pakundia of which Sonatala (41%),Silmandi (10%) and Silty alluvium (9%) covers major area. The soils are loamy and clayey. In Nandail highly suitable area covers 4,584ha (52%), moderately suitable areas cover 4,714 ha (53%) under rainfed and irrigated condition respectively. In Pakundia highly suitable area under rainfed and irrigated condition were 3,804 ha (53%) and 4,076 ha (57%) respectively. Moderately suitable area under rainfed and irrigated condition were 195 ha and 254 ha under rainfed and irrigated condition. The soils of Brahmaputra Floodplain were slightly acid to neutral and that of Madhupur Tract were strongly to slightly acidic. Organic matter content of all the soils were low. N was below critical level while K, P, S were optimum. Fertilizer recommendation were made on the basis of soil test results.

Knowledge Management: Report/Proceedings