Rare earth elements and clay minerals of soils of the floodplains of ...
2004年5月1日 · The five soils could be divided into two groups based on their clay mineralogy. Bgd-1 of the Old Bramaputra Floodplain and Bgd-2 and Bgd-3 of the Old Meghna Estuarine Floodplain contained considerable amounts of chlorite and vermiculite in addition to clay mica, and some vermiculite was partially chloritized in Bgd-2 and Bgd-3.
In the General Soil Types system, both calcareous and noncalcareous soils are classified into four Types, namely, Alluvium, Grey Floodplain Soil, Dark Grey Floodplain Soil and Brown Floodplain Soil.
Major Soil Types - SpringerLink
2013年1月1日 · These soils occur extensively in basins and on the lower parts of ridges on the Ganges floodplain. The soils in ridges are friable, oxidized, calcareous, and loamy, but the soils are dark grey, decalcified with heavy clays in basins. They are found within 125 cm of the soil surface and have dark grey subsoil coatings.
Calcareous Soil - Banglapedia
There are four general soil types of calcareous soils in Bangladesh: (i) Calcareous alluvium occurs extensively in the active Ganges floodplain and Meghna estuarine floodplain. These are raw or stratified alluvium, calcareous throughout or in some layer within 125 cm from the surface.
Distribution, characteristics and management of calcareous soils
2023年1月1日 · This chapter gives an overview of the distribution and characteristics of calcareous soils, the limitations of calcareous soils for crop production, and some of the sustainable management practices to overcome crop productivity constraints in calcareous soils.
Bangladesh Soil - Banglapedia
Non-calcareous Brown Floodplain soils Occur largely on the Old Himalayan Piedmont Plain, mostly on the ridges. They also occupy minor areas in the Tista, Karatoya-Bangali, Jamuna and Old Brahmaputra floodplains, and in some western parts of the Ganges floodplain.
Organic matter status and organic recycling in Bangladesh soils
1987年2月1日 · Calcareous soils found in Gangetic alluvium are generally rich in Ca and Mg while most recent floodplain soils have high reserves of potassium. The soil pH ranges from a minimum of around 4.0 in the tea soil to 8.0 in the Ganges floodplain. In …
Agroecological Zone - Banglapedia
Early kharif dryland crops which mature before flooding starts can be grown on permeable soils, and late kharif and early rabi dryland crops on soils which drain in September-October. Medium lowland is flooded too deeply for transplanted aus or transplanted aman paddy to …
Performance of Mustard Varieties with Boron Fertilization in Calcareous …
A field experiment was carried out at Calcareous Brown Floodplain Soil of Regional Agricultural Research Station, Jessore during the two consecutive seasons of 2000-2002. The objectives were to evaluate the effect of boron on the yield of mustard and to screen out the suitable variety (s) tested against different boron levels for maximizing ...
21 General soil types of Bangladesh - Basic Agricultural Study
21 General soil types of Bangladesh a) Floodplain soils: 1 Calcareous Alluvium 2. Noncalcareous Alluvium 3 Calcareous Brown 4. Calcareous Grey 5. Calcareous Dark Grey ...
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