Quantitative assessment of ionic status of pond water for irrigation and aquaculture usage in the selected sites of Mymensingh areas, Bangladesh

Abstract

Ponds are considered to be self-contained, land lock ecosystem which is often teeming with rich vegetation and diverse organismal life. The pond water contains different organic and inorganic components. The experiment was carried out in laboratory, Department of Agricultural Chemistry, Bangladesh Agricultural University, Mymensingh through collection of pond water from Gouripur and Muktagacha under Mymensingh division for assessment of major ionic status and suitability parameters for irrigation and aquaculture usage in quantitative way. Around 30 samples were collected from different location. On the basis of HCO3 ion, all water samples except 3 samples were not suitable for irrigation because this anion exceeded the acceptable limit (1.5 meL-1). On the other hand, HCO3 ion was not treated as problematic in all samples except 2 samples for aquaculture usages. The concentrations of Ca, Mg, Na, K, PO4 and SO4 were far below the recommended limit. Considering aquaculture usage, Cl ion was considered as hazardous in all the pond water samples because this anion was above the legal limit (<0.003mgL-1). pH value of pond ranged from 7.02 to 7.87 indicating alkaline in nature and were not problematic for irrigation and aquaculture usage. Among the major ionic constituents, the remarkable significant correlations existed between Ca vs Mg, Ca vs K, Mg vs SO4, K vs Na, Na vs SO4.
 Res. Agric., Livest. Fish.6(2): 301-313, August 2019

Effect of conventional retting of jute on the quality of water and jute fiber

“…A general observation of TDS and EC of water samples were found increased in all ponds/canals, on the other hand, p H and DO were decreased with the retting time progresses to end due to the increased microbial activities. The levels of P H, TDS, EC and DO of jute retted water varies from the quality of water standard for fish cultivation mentioned by DOE (Roy and Hassan, 2016) and other water quality assessment studies (Akter et al, 2019;Munni et al, 2015).…”

“…In the study, all measured quality parameters were compared with the standard values to investigate the water quality pre and post jute retting according to the Department of Environment (DOE), Bangladesh. Table 1 shows the standard allowable limits of pH, DO, TDS, and EC of the Department of Environment (DOE), Bangladesh (Akter et al, 2019;Roy and Hassan, 2016).…”

“…The p H of water is considered as a degree of how corrosive or alkaline it is, on a scale of 0 to 14 with 7 being neutral. All pre retting water samples collected were found alkaline in nature (Akter et al, 2019). Pre and post-retting samples were taken from water bodies during daytime as plants in water evacuate carbon dioxide (CO2) for photosynthesis to enhance p H initiation (Stone and Thomforde, 2004).…”

“…Progressive retting within the same water bodies delivers the destitute quality of jute fiber (Das et al, 2014;Khan et al, 2017). TDS indicates the degree of dissolved combined substance of all inorganic and natural substances display in a fluid in atomic, ionized, or micro-granular suspended frame and found relatively low at pond water less than 365 mgL -1 (Akter et al, 2019;Usha et al, 2008). In the present study, TDS was observed higher in post jute retting water than in pre retting water especially in samples of the pond and stagnant water bodies 1, and 3 due to an increase of dissolved solid by microbial activity with the process of retting shown in Figure 2.…”

Monitoring pond water quality to improve the production of Labeo rohita (Hamilton, 1822) in Bannu Fish Hatchery of Bannu district, Khyber Pakhtunkhwa province; An Implications for artificial fish culture

“…In this study, water parameters like pH, electrical conductivity, temperature, dissolved oxygen, dissolved ammonia, and salinity of the nursery ponds of Labeo rohita were observed for 75 days study period by following the methodology of Abdel-Khalek et al (2016), Rajkumar et al (2018), Akter et al (2019) and Rehman et al (2020). Temperature, pH, and electric conductivity of water samples were determined by using Digital Jenway 3505 pH/mV/Temperature meter.…”