The present study was conducted to show the sulfate sorption capacity within two soil series by c... more The present study was conducted to show the sulfate sorption capacity within two soil series by comparing their best suitability in different adsorption isotherm and the effects of acetate anion on sulfate sorption. Between two soil series, Bajoa soil possessed the greater sorption (645.12 µg/g soil) with increasing the sulfur concentration. Beside this, the Gopalpur soil series showed sulfate sorption (550.76 µg/g soil) probably due to its higher pH (7.9); lower CEC (17 Cmol(+)kg-1), organic C (0.64%) and clay content (31%) than Bajoa (pH 6.9; CEC 22 Cmol(+)kg-1; Organic C 0.70; clay content 35%). On the other hand, at the presence of acetate anion, the amount of sulfate sorption in both soil series was decreased due to the competition between the sulfate and acetate anion on the exchange site. The Frundlich equation showed the best fit with higher value of coefficient followed by Langmuir and Temkin. The Langmuir equation has explained the Maximum Buffering Capacity (MBC) and the ...
A laboratory incubation experiment was carried out to investigate the influence of soil salinity ... more A laboratory incubation experiment was carried out to investigate the influence of soil salinity and organic matter on inorganic phosphorus transformation with times in two different soil series such as Barisal and Dumuria located in Ganges Tidal Floodplain sites of Bangladesh. Two representative soil samples were collected from surface soil (0-15 cm) with composite sampling. The salinity and organic matter treatments were 4 dS m-1 and 5 t ha-1 (decomposed cow dung) with three replications. The treated soils were then incubated in the laboratory at field capacity moisture condition. To determine the transformation of different forms of inorganic P, sampling was done for 0, 7, 15 and 30 days. Different forms of inorganic P such as soluble and exchangeable phosphorus (SE-P), iron and aluminium bound phosphorus (Fe and Al-P), calcium bound phosphorus (Ca-P) and residual phosphorus (RE-P) were determined at different days of incubation. For Barisal soil series, the sequence of different...
Bangladesh Journal of Scientific and Industrial Research, 2019
An attempt has been made to evaluate the condition of soil of the Sundarban mangrove forest of Ba... more An attempt has been made to evaluate the condition of soil of the Sundarban mangrove forest of Bangladesh by applying standard method. Soil pH was varied from 6.63 to 7.87. Organic carbon of soil was found 4.06, 4.79, 5.59, 9.38 and 9.80 (gKg-1) at Kotka, Kochikhali, Hironpoint, Harbaria, and Dublarchar, respectively. The electrical conductivity of soil was varied from 14.39, to 42.89 (dSm-1) in the study areas.The cation exchange capacity in the soils was varied from 22.32 to 27.2 Cmolckg-1 in the study area. The average percentages of total nitrogen content in the soil were varied from 0.04 to 0.08%. The soils of Oligohaline zone of Sundarban mangrove forest are rich in water soluble and exchangeable magnesium followed by calcium and the potassium. The percentages of silt and clay were higher than sand in all study areas. Dissolved chloride in the soil was found 7010, 4186,11750 and 16389 (μg g-1) at Hironpoint, Harbaria, Dublarchar and Kotka respectively. Bangladesh J. Sci. Ind. ...
Bangladesh Journal of Scientific and Industrial Research, 2019
A study was conducted to explore the spatial variability of major soil nutrients of Agricultural ... more A study was conducted to explore the spatial variability of major soil nutrients of Agricultural fields in South-western region of Bangladesh. From the study area, 40 surface soil samples were collected by a random sampling strategy using GPS. Then soil physico-chemical properties i.e., pH, electrical conductivity (EC), organic matter (OM), total nitrogen (TN) N, soil available nutrients (P, K and S) were measured in laboratory. After data normalization, classical and geo-statistical analyses were used to describe soil properties and spatial correlation of soil characteristics. Spatial variability of soil physico-chemical properties was quantified through semi-variogram analysis and the respective surface maps were prepared through ordinary Kriging. Spherical model fits well with experimental semi-variogram of pH, EC, OM, TN, available P, K and S. Soil pH, available phosphorus (Av P), potassium (Av K) and sulfur (Av S) have the moderate spatial dependence, with nugget/sill ratios of...
Jahangirnagar University Journal of Biological Sciences, 2016
The present study was carried out to investigate the effects of salinity level on different forms... more The present study was carried out to investigate the effects of salinity level on different forms of inorganic phosphorus (P) transformation in three different soil series such as Amjhupi, Gopalpur and Bajoa located in Ganges River Floodplain. Two non-saline soils and one slightly saline soil with different textural classes were collected from these sites. The salinity treatments were 0, 6, 10 and 13 dSm-1 with three replications. The treated soils were then incubated in laboratory at field capacity moisture condition. To determine the transformation of different forms of inorganic P, sampling was done for 0, 14, 21, 42 and 84 days. Different forms of inorganic P such as soluble and exchangeable phosphorus (SE-P), iron and aluminium bound phosphorus (Fe and Al-P), calcium bound phosphorus (Ca-P) and residual phosphorus (RE-P) were determined. For Amjhupi soil series, the sequence of different forms of inorganic P was RE-P>Ca-P>Fe and Al-P>SE-P according to their amount. For...
A major challenge of agriculture production is the deterioration of natural resources e.g. land a... more A major challenge of agriculture production is the deterioration of natural resources e.g. land and water due to overexploitation of agricultural land and greatest emphasis on mono-cropping (rice). This would impact food and nutrition insecurity of increasing population. There are many problems related to soil health issue which hinder crop production. The major problems are depletion of soil organic matter and soil fertility, increasing soil salinity and soil acidity, topsoil erosion, and degraded rice soils. To solve these problems, efficient and judicious research planning is needed. Not all problems are researchable, so problems need to be prioritized that constraint production, growth and development. In Bangladesh fertilizer recommendations are generally made on the basis of Agro-ecological regions, which are highly generalized. Fertilizer recommendation based on site specific soil test values are found to produce considerable high yields and farmers response are very much encouraging. SRDI and the Agricultural Extension Department can support the farmers by establishing local research stations for testing the soils and providing the farmers with necessary suggestions for application of agricultural inputs.
A study has been conducted in Bangladesh Council of Scientific and Industrial Research laboratory... more A study has been conducted in Bangladesh Council of Scientific and Industrial Research laboratory of Chittagong in Bangladesh to evaluate the prevalence of AMF colonization in medicinal plant root and response with rhizosphere soil properties. Fifteen medicinal plant's root samples with rhizosphere soil were collected from 0-30 cm depth. Root colonization and soil characteristics were determined by following different standard methods and percentage of root colonization was recorded. The highest AMF colonization was found in Chukrasia velutina A. Juss (100±7.12%) under the family of Meliaceae followed by Terminalia chebula (Gaertn.) Retz. (91.67±7.32%) and least percentage of AMF infection was observed in Ocimum basilicum L. var. purpurascens Benth (20.83±8.91%) under the family of Lamiaceae. AMF colonization in root was varied randomly with different rhizosphere soil parameters. AMF colonization was differed positively with K, Ca and moisture content and varied negatively with ...
A field investigation was carried out to evaluate the spatial variability of physical indicators ... more A field investigation was carried out to evaluate the spatial variability of physical indicators of soil quality of an agricultural field and to construct a physical soil quality index (SQIP) map. Surface soil samples were collected using10 m×10 m grid from an Inceptisol on Ganges Tidal Floodplain of Bangladesh. Five physical soil quality indicators, soil texture, bulk density, porosity, saturated hydraulic conductivity (KS), and aggregate stability (measured as mean weight diameter, MWD) were determined. The spatial structures of sand, clay, andKSwere moderate but the structure was strong for silt, bulk density, porosity, and MWD. Each of the physical soil quality indicators was transformed into 0 and 1 using threshold criteria which are required for crop production. The transformed indicators were the combined into SQIP. The kriged SQIPmap showed that the agricultural field studied could be divided into two parts having “good physical quality” and “poor physical soil quality.”
A field experiment was conducted to investigate the distribution of Potassium, Sodium, Calcium in... more A field experiment was conducted to investigate the distribution of Potassium, Sodium, Calcium in different parts of commonly used vegetables. Complete Randomize Design (CRD) was followed for the experiment. Seeds of nine vegetable plants were collected and cultivated. After 45 days, vegetables were harvested and nutrient concentration in different parts of nine vegetables (leaf, petiole and stem) was measured. The distribution order of potassium, sodium, calcium concentration among leaves, petioles and stems was found as petiole>stem>leaf, petiole>leaf>stem, petiole>leaf>stem, respectively. But individually, high concentration of K, Ca, Na was found in Corchorus capsularis, Amaranthus lividus (Green) and Spinacia oleracia, respectively and low concentration was found in Lagenaria siceraria for all nutrients. The K, Ca, Na concentration among the plants and within different parts of the each vegetable was significant (p<0.05). The present research work revealed that Corchorus capsularis, Amaranthus lividus (Green), Spinacia oleracia was highly nutritious for measured nutrients but Lagenaria siceraria contained low concentration of all measured nutrient. But for all the vegetables, petioles are highly nutritious compared to other parts of vegetables.
The present study was conducted to show the sulfate sorption capacity within two soil series by c... more The present study was conducted to show the sulfate sorption capacity within two soil series by comparing their best suitability in different adsorption isotherm and the effects of acetate anion on sulfate sorption. Between two soil series, Bajoa soil possessed the greater sorption (645.12 µg/g soil) with increasing the sulfur concentration. Beside this, the Gopalpur soil series showed sulfate sorption (550.76 µg/g soil) probably due to its higher pH (7.9); lower CEC (17 Cmol(+)kg-1), organic C (0.64%) and clay content (31%) than Bajoa (pH 6.9; CEC 22 Cmol(+)kg-1; Organic C 0.70; clay content 35%). On the other hand, at the presence of acetate anion, the amount of sulfate sorption in both soil series was decreased due to the competition between the sulfate and acetate anion on the exchange site. The Frundlich equation showed the best fit with higher value of coefficient followed by Langmuir and Temkin. The Langmuir equation has explained the Maximum Buffering Capacity (MBC) and the ...
A laboratory incubation experiment was carried out to investigate the influence of soil salinity ... more A laboratory incubation experiment was carried out to investigate the influence of soil salinity and organic matter on inorganic phosphorus transformation with times in two different soil series such as Barisal and Dumuria located in Ganges Tidal Floodplain sites of Bangladesh. Two representative soil samples were collected from surface soil (0-15 cm) with composite sampling. The salinity and organic matter treatments were 4 dS m-1 and 5 t ha-1 (decomposed cow dung) with three replications. The treated soils were then incubated in the laboratory at field capacity moisture condition. To determine the transformation of different forms of inorganic P, sampling was done for 0, 7, 15 and 30 days. Different forms of inorganic P such as soluble and exchangeable phosphorus (SE-P), iron and aluminium bound phosphorus (Fe and Al-P), calcium bound phosphorus (Ca-P) and residual phosphorus (RE-P) were determined at different days of incubation. For Barisal soil series, the sequence of different...
Bangladesh Journal of Scientific and Industrial Research, 2019
An attempt has been made to evaluate the condition of soil of the Sundarban mangrove forest of Ba... more An attempt has been made to evaluate the condition of soil of the Sundarban mangrove forest of Bangladesh by applying standard method. Soil pH was varied from 6.63 to 7.87. Organic carbon of soil was found 4.06, 4.79, 5.59, 9.38 and 9.80 (gKg-1) at Kotka, Kochikhali, Hironpoint, Harbaria, and Dublarchar, respectively. The electrical conductivity of soil was varied from 14.39, to 42.89 (dSm-1) in the study areas.The cation exchange capacity in the soils was varied from 22.32 to 27.2 Cmolckg-1 in the study area. The average percentages of total nitrogen content in the soil were varied from 0.04 to 0.08%. The soils of Oligohaline zone of Sundarban mangrove forest are rich in water soluble and exchangeable magnesium followed by calcium and the potassium. The percentages of silt and clay were higher than sand in all study areas. Dissolved chloride in the soil was found 7010, 4186,11750 and 16389 (μg g-1) at Hironpoint, Harbaria, Dublarchar and Kotka respectively. Bangladesh J. Sci. Ind. ...
Bangladesh Journal of Scientific and Industrial Research, 2019
A study was conducted to explore the spatial variability of major soil nutrients of Agricultural ... more A study was conducted to explore the spatial variability of major soil nutrients of Agricultural fields in South-western region of Bangladesh. From the study area, 40 surface soil samples were collected by a random sampling strategy using GPS. Then soil physico-chemical properties i.e., pH, electrical conductivity (EC), organic matter (OM), total nitrogen (TN) N, soil available nutrients (P, K and S) were measured in laboratory. After data normalization, classical and geo-statistical analyses were used to describe soil properties and spatial correlation of soil characteristics. Spatial variability of soil physico-chemical properties was quantified through semi-variogram analysis and the respective surface maps were prepared through ordinary Kriging. Spherical model fits well with experimental semi-variogram of pH, EC, OM, TN, available P, K and S. Soil pH, available phosphorus (Av P), potassium (Av K) and sulfur (Av S) have the moderate spatial dependence, with nugget/sill ratios of...
Jahangirnagar University Journal of Biological Sciences, 2016
The present study was carried out to investigate the effects of salinity level on different forms... more The present study was carried out to investigate the effects of salinity level on different forms of inorganic phosphorus (P) transformation in three different soil series such as Amjhupi, Gopalpur and Bajoa located in Ganges River Floodplain. Two non-saline soils and one slightly saline soil with different textural classes were collected from these sites. The salinity treatments were 0, 6, 10 and 13 dSm-1 with three replications. The treated soils were then incubated in laboratory at field capacity moisture condition. To determine the transformation of different forms of inorganic P, sampling was done for 0, 14, 21, 42 and 84 days. Different forms of inorganic P such as soluble and exchangeable phosphorus (SE-P), iron and aluminium bound phosphorus (Fe and Al-P), calcium bound phosphorus (Ca-P) and residual phosphorus (RE-P) were determined. For Amjhupi soil series, the sequence of different forms of inorganic P was RE-P>Ca-P>Fe and Al-P>SE-P according to their amount. For...
A major challenge of agriculture production is the deterioration of natural resources e.g. land a... more A major challenge of agriculture production is the deterioration of natural resources e.g. land and water due to overexploitation of agricultural land and greatest emphasis on mono-cropping (rice). This would impact food and nutrition insecurity of increasing population. There are many problems related to soil health issue which hinder crop production. The major problems are depletion of soil organic matter and soil fertility, increasing soil salinity and soil acidity, topsoil erosion, and degraded rice soils. To solve these problems, efficient and judicious research planning is needed. Not all problems are researchable, so problems need to be prioritized that constraint production, growth and development. In Bangladesh fertilizer recommendations are generally made on the basis of Agro-ecological regions, which are highly generalized. Fertilizer recommendation based on site specific soil test values are found to produce considerable high yields and farmers response are very much encouraging. SRDI and the Agricultural Extension Department can support the farmers by establishing local research stations for testing the soils and providing the farmers with necessary suggestions for application of agricultural inputs.
A study has been conducted in Bangladesh Council of Scientific and Industrial Research laboratory... more A study has been conducted in Bangladesh Council of Scientific and Industrial Research laboratory of Chittagong in Bangladesh to evaluate the prevalence of AMF colonization in medicinal plant root and response with rhizosphere soil properties. Fifteen medicinal plant's root samples with rhizosphere soil were collected from 0-30 cm depth. Root colonization and soil characteristics were determined by following different standard methods and percentage of root colonization was recorded. The highest AMF colonization was found in Chukrasia velutina A. Juss (100±7.12%) under the family of Meliaceae followed by Terminalia chebula (Gaertn.) Retz. (91.67±7.32%) and least percentage of AMF infection was observed in Ocimum basilicum L. var. purpurascens Benth (20.83±8.91%) under the family of Lamiaceae. AMF colonization in root was varied randomly with different rhizosphere soil parameters. AMF colonization was differed positively with K, Ca and moisture content and varied negatively with ...
A field investigation was carried out to evaluate the spatial variability of physical indicators ... more A field investigation was carried out to evaluate the spatial variability of physical indicators of soil quality of an agricultural field and to construct a physical soil quality index (SQIP) map. Surface soil samples were collected using10 m×10 m grid from an Inceptisol on Ganges Tidal Floodplain of Bangladesh. Five physical soil quality indicators, soil texture, bulk density, porosity, saturated hydraulic conductivity (KS), and aggregate stability (measured as mean weight diameter, MWD) were determined. The spatial structures of sand, clay, andKSwere moderate but the structure was strong for silt, bulk density, porosity, and MWD. Each of the physical soil quality indicators was transformed into 0 and 1 using threshold criteria which are required for crop production. The transformed indicators were the combined into SQIP. The kriged SQIPmap showed that the agricultural field studied could be divided into two parts having “good physical quality” and “poor physical soil quality.”
A field experiment was conducted to investigate the distribution of Potassium, Sodium, Calcium in... more A field experiment was conducted to investigate the distribution of Potassium, Sodium, Calcium in different parts of commonly used vegetables. Complete Randomize Design (CRD) was followed for the experiment. Seeds of nine vegetable plants were collected and cultivated. After 45 days, vegetables were harvested and nutrient concentration in different parts of nine vegetables (leaf, petiole and stem) was measured. The distribution order of potassium, sodium, calcium concentration among leaves, petioles and stems was found as petiole>stem>leaf, petiole>leaf>stem, petiole>leaf>stem, respectively. But individually, high concentration of K, Ca, Na was found in Corchorus capsularis, Amaranthus lividus (Green) and Spinacia oleracia, respectively and low concentration was found in Lagenaria siceraria for all nutrients. The K, Ca, Na concentration among the plants and within different parts of the each vegetable was significant (p<0.05). The present research work revealed that Corchorus capsularis, Amaranthus lividus (Green), Spinacia oleracia was highly nutritious for measured nutrients but Lagenaria siceraria contained low concentration of all measured nutrient. But for all the vegetables, petioles are highly nutritious compared to other parts of vegetables.
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