Papers by Taufique Arefin
The aim of the present study was to evaluate the degree of metal contamination of the Turag River... more The aim of the present study was to evaluate the degree of metal contamination of the Turag River water and its suitability for irrigation. Twenty water samples were analyzed for physicochemical parameters and metals viz., calcium, magnesium, potassium (K), sodium, copper (Cu), zinc (Zn), iron (Fe), manganese (Mn), lead (Pb), cadmium (Cd), chromium (Cr), and nickel (Ni). All water samples were slightly alkaline to alkaline. Regarding electrical conductivity (EC), all samples were suitable for crop in soils with moderate permeability and leaching. Water samples were medium salinity and low alkalinity hazard classes. In terms of total dissolved solids (TDS), all samples were classified as freshwater. As per sodium adsorption ratio (SAR) and soluble sodium percentage (SSP), all samples were classified as excellent. No residual sodium carbonate (RSC) was detected in any of the samples, indicating suitability for irrigation; and all samples were considered very hard. Cr and Mn contents in all samples were above FAO guideline values and, therefore, these metals were considered toxic. Zn, Cu, Pb, Cd, and Ni concentrations were below acceptable limit for irrigation and do not pose a threat to soil environment. Significant relationships were found between EC and TDS, SAR and SSP, SAR and RSC, and SSP and RSC. The combinations of ions such as K–Zn, K–Fe, K–Cu, K–Mn, K– Pb, Zn–Fe, Zn–Cu, Zn–Mn, Fe–Mn, Cu–Mn, Cu–Pb and Mn–Pb exhibited significant correlation. This study revealed that Turag River water samples are contaminated with Cr and Mn. This fact should not be ignored because water contamination by metals may pose a threat to human health through food chain.
Four edible mushroom species (Pleurotus ostreatus, Agaricus bisporus, Volvariella volvacea, Ganod... more Four edible mushroom species (Pleurotus ostreatus, Agaricus bisporus, Volvariella volvacea, Ganoderma lucidum) from different locations of Bangladesh, were analysed for their protein and metal content profile (K, Na, Fe, Cu, Zn, Mn, Cr, Pb, As and Cd). Trace metals were determined by atomic absorption spectrophotometer, Na and K by flame emission spectrophotometer and protein by micro Kjeldhal method. All element concentrations were determined on a dry weight basis. The protein content of mushrooms varied from 13.8%–34.3% and the metal content of samples ranged from 0.54–2.25% for K and 12.6–81.6, 69.5–626.2, 39.2–163.4, 30.1–75.5, 52.9–104.5, 0.20–0.30, 0.13–0.59 µg g-1 for Na, Fe, Cu, Zn, Mn, Cd, Pb, respectively. Arsenic and cadmium concentrations were below the detection limit of the method used. The detection limits of the method for As and Cd are 0.01 µg g-1 for each element. In general, K and Fe content were higher than other metals in all mushroom species. The levels of Cu and Zn in some mushroom samples were found to be higher than legal limits.
Screening of Several Cotton Genotypes for Resistance to Cotton Bollworm, Heliothis armigera (Hubner)
ABSTRACT
A pot experiment was conducted in the net house of the Agricultural Chemistry Department... more ABSTRACT
A pot experiment was conducted in the net house of the Agricultural Chemistry Department Bangladesh Agricultural University, Mymensingh during July to November 2003 to identify naturally grown boron hyper accumulating weed species from boron contaminated soil and assessment of boron accumulation by naturally grown weeds for the development of phytormediation technology. Boron and phosphorus were determined in Barnyard grass, Joina, Water cress, Malancha, Panikachu, Panilong, Chisra and Topapana. The pot experiment was laid out in a completely Randomized Design (CRD) with 13 treatment and two replications. The treatments were 0, 0.5, 0.75, 1.0, 1.5, 2, 4, 8, 12, 20, 30, 50 and 100 mg BL-1. Nine weed species namely; Barnyardgrass (Echinochloa crus-gullia), Joina (Fimbristylis miliacea), Chisra (Scirpus juncoids), Panikachu (Monochoria hastate), Panilong (Luduwigia hyssopifolia), Malancha (Alternanthera philoxeroides), Topapana (Pistia stratiotcs) and water cress (Enhydra fluctuans) accumulate boron in a increasing level of boron treatment except Mutha (Cyperus rotundus). Out of nine weeds water cress absorbed the highest amount (398.88 g pot-1), of boron followed by Malancha (188.67 g pot-1), Panikachu (154.15 g pot-1), Jonia (105.90 g pot-1), Barnyard grass (93.02 g pot-1), Chisra (74.68 g pot-1), Panilong (29.373 g pot-1) and Topapana (25.46 g pot-1). Although maximum accumulation of boron was found in Water cress, it is not abundant in the rice pattern, biomass and toxicity tolerance, Joina and Barnyard grass are the best performer and can be considered for the mitigation of boron contaminated soil due to irrigation water while water cress and Malancha can be used for remediation of stagnant boron contaminated water as a means of phytoremediation technology.
Key words: Boron concentration, weeds, assessment of Boron accumulation, phytoremediation technology.
Abstract
A pot experiment was conducted in the house of the Agricultural Chemistry Department, B... more Abstract
A pot experiment was conducted in the house of the Agricultural Chemistry Department, Bangladesh Agricultural University, Mymensingh during July to November 2003 to assess the morphological features of some naturally grown boron hyperaccumulating weed species as influenced by boron contamination in soil. The pot experiment was laid out in a Completely Randomized Design (CRD) with 13 treatments and three replications. The treatments were 0, 0.5, 0.75, 1.0, 1.5, 2, 4, 8, 12, 20, 30, 50 and 100 mg BL-1. Nine weed species namely, Barnyard grass (Echinochloa crus-galli), Joina (Fimbristylis miliacea), Chisra (Scirpus juncoids), Panikachu (Monochoria hastata), Panilong (Luduwigia hyssopifolia), Malancha (Alternanthera philoxeroides), Topapana (Pistia stratiotes) and Water cress (Enhydra fluctuans) were used in the experiment. Plant height, number of leaves per plant and biomass of each plant were gradually decreased with the application of increasing levels of boron. Considering the characteristics of the nine weed species Mutha water cress and Joina seem to have better enduring capacity to higher levels of boron.
Keywords: Boron, phytoremediation, hyperaccumulating weeds, morphological characters
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Papers by Taufique Arefin
A pot experiment was conducted in the net house of the Agricultural Chemistry Department Bangladesh Agricultural University, Mymensingh during July to November 2003 to identify naturally grown boron hyper accumulating weed species from boron contaminated soil and assessment of boron accumulation by naturally grown weeds for the development of phytormediation technology. Boron and phosphorus were determined in Barnyard grass, Joina, Water cress, Malancha, Panikachu, Panilong, Chisra and Topapana. The pot experiment was laid out in a completely Randomized Design (CRD) with 13 treatment and two replications. The treatments were 0, 0.5, 0.75, 1.0, 1.5, 2, 4, 8, 12, 20, 30, 50 and 100 mg BL-1. Nine weed species namely; Barnyardgrass (Echinochloa crus-gullia), Joina (Fimbristylis miliacea), Chisra (Scirpus juncoids), Panikachu (Monochoria hastate), Panilong (Luduwigia hyssopifolia), Malancha (Alternanthera philoxeroides), Topapana (Pistia stratiotcs) and water cress (Enhydra fluctuans) accumulate boron in a increasing level of boron treatment except Mutha (Cyperus rotundus). Out of nine weeds water cress absorbed the highest amount (398.88 g pot-1), of boron followed by Malancha (188.67 g pot-1), Panikachu (154.15 g pot-1), Jonia (105.90 g pot-1), Barnyard grass (93.02 g pot-1), Chisra (74.68 g pot-1), Panilong (29.373 g pot-1) and Topapana (25.46 g pot-1). Although maximum accumulation of boron was found in Water cress, it is not abundant in the rice pattern, biomass and toxicity tolerance, Joina and Barnyard grass are the best performer and can be considered for the mitigation of boron contaminated soil due to irrigation water while water cress and Malancha can be used for remediation of stagnant boron contaminated water as a means of phytoremediation technology.
Key words: Boron concentration, weeds, assessment of Boron accumulation, phytoremediation technology.
A pot experiment was conducted in the house of the Agricultural Chemistry Department, Bangladesh Agricultural University, Mymensingh during July to November 2003 to assess the morphological features of some naturally grown boron hyperaccumulating weed species as influenced by boron contamination in soil. The pot experiment was laid out in a Completely Randomized Design (CRD) with 13 treatments and three replications. The treatments were 0, 0.5, 0.75, 1.0, 1.5, 2, 4, 8, 12, 20, 30, 50 and 100 mg BL-1. Nine weed species namely, Barnyard grass (Echinochloa crus-galli), Joina (Fimbristylis miliacea), Chisra (Scirpus juncoids), Panikachu (Monochoria hastata), Panilong (Luduwigia hyssopifolia), Malancha (Alternanthera philoxeroides), Topapana (Pistia stratiotes) and Water cress (Enhydra fluctuans) were used in the experiment. Plant height, number of leaves per plant and biomass of each plant were gradually decreased with the application of increasing levels of boron. Considering the characteristics of the nine weed species Mutha water cress and Joina seem to have better enduring capacity to higher levels of boron.
Keywords: Boron, phytoremediation, hyperaccumulating weeds, morphological characters
A pot experiment was conducted in the net house of the Agricultural Chemistry Department Bangladesh Agricultural University, Mymensingh during July to November 2003 to identify naturally grown boron hyper accumulating weed species from boron contaminated soil and assessment of boron accumulation by naturally grown weeds for the development of phytormediation technology. Boron and phosphorus were determined in Barnyard grass, Joina, Water cress, Malancha, Panikachu, Panilong, Chisra and Topapana. The pot experiment was laid out in a completely Randomized Design (CRD) with 13 treatment and two replications. The treatments were 0, 0.5, 0.75, 1.0, 1.5, 2, 4, 8, 12, 20, 30, 50 and 100 mg BL-1. Nine weed species namely; Barnyardgrass (Echinochloa crus-gullia), Joina (Fimbristylis miliacea), Chisra (Scirpus juncoids), Panikachu (Monochoria hastate), Panilong (Luduwigia hyssopifolia), Malancha (Alternanthera philoxeroides), Topapana (Pistia stratiotcs) and water cress (Enhydra fluctuans) accumulate boron in a increasing level of boron treatment except Mutha (Cyperus rotundus). Out of nine weeds water cress absorbed the highest amount (398.88 g pot-1), of boron followed by Malancha (188.67 g pot-1), Panikachu (154.15 g pot-1), Jonia (105.90 g pot-1), Barnyard grass (93.02 g pot-1), Chisra (74.68 g pot-1), Panilong (29.373 g pot-1) and Topapana (25.46 g pot-1). Although maximum accumulation of boron was found in Water cress, it is not abundant in the rice pattern, biomass and toxicity tolerance, Joina and Barnyard grass are the best performer and can be considered for the mitigation of boron contaminated soil due to irrigation water while water cress and Malancha can be used for remediation of stagnant boron contaminated water as a means of phytoremediation technology.
Key words: Boron concentration, weeds, assessment of Boron accumulation, phytoremediation technology.
A pot experiment was conducted in the house of the Agricultural Chemistry Department, Bangladesh Agricultural University, Mymensingh during July to November 2003 to assess the morphological features of some naturally grown boron hyperaccumulating weed species as influenced by boron contamination in soil. The pot experiment was laid out in a Completely Randomized Design (CRD) with 13 treatments and three replications. The treatments were 0, 0.5, 0.75, 1.0, 1.5, 2, 4, 8, 12, 20, 30, 50 and 100 mg BL-1. Nine weed species namely, Barnyard grass (Echinochloa crus-galli), Joina (Fimbristylis miliacea), Chisra (Scirpus juncoids), Panikachu (Monochoria hastata), Panilong (Luduwigia hyssopifolia), Malancha (Alternanthera philoxeroides), Topapana (Pistia stratiotes) and Water cress (Enhydra fluctuans) were used in the experiment. Plant height, number of leaves per plant and biomass of each plant were gradually decreased with the application of increasing levels of boron. Considering the characteristics of the nine weed species Mutha water cress and Joina seem to have better enduring capacity to higher levels of boron.
Keywords: Boron, phytoremediation, hyperaccumulating weeds, morphological characters