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Application of Inorganic Fertilizers and Organic Manures on the Production of Autotrophic Plankton in Madhupur Tract Soil Contained Miniature Tank

M. E. Huda
Department of Environmental Sciences, Jahangirnagar University, Savar-Dhaka

M. R. Nabi
Department of Zoology, Jahangirnagar University, Savar-Dhaka

Abstract/ Executive Summary:

Appropriate fertilizer and their impact on physico-chemical parameters of water and productivity is very important for aquaculture and ecology. Optimum fertilizer dose can help in fish farmer as well as aquaculture sector. From the study it was found that the total physicochemical parameters of water were suitable for aquaculture, drinking water, irrigation and domestic use. The average water temperature was 26.45±2.75^oC; 26.50±3.24^oC; 25.83±4.08^oC; 26.57±3.02^oC and 26.53±2.93^oC for MCRT-1 to 5 gradually. Water pH in an average was 7.37±0.61; 7.44±0.55; 7.25±0.58; 7.33±0.54 and 7.47±0.49 for Minature Circular Research Tank (MCRT)-1 to 5 respectively. Average water DO were 6.98±1.05 mg l^-1; 6.75±1.53 mg l^-1; 6.90±1.64 mg l^-1; 6.59±1.19mg l-1 and 6.77±1.60mg l^-1 for MCRT-1 to 5 respectively. Average water hardness were 71.88 ± 20.47 mg l^-1; 60.5 ±2 1.25 mg l^-1; 83.38 ± 23.39 mg l^-1; 59.13 ± 25.57 mg l^-1 and 52.63 ± 7.92 mg l^-1 for MCRT-1 to 5 gradually. Average water total phosphorus were 0.77 ± 0.18 mg l^-1; 0.83 ± 0.19 mg l^-1; 0.78 ± 0.21 mg l^-1; 0.84 ± 0.17 mg l^-1 and 0.84 ± 0.16 mg l^-1 for MCRT-1 to 5 gradually. From planktonic study it was found that the highest phytoplankton and Zooplankton were in MCRT-3. Phytoplanktons were under 27 no. of genera. Their groups were Cyanophyceae, Chlorophyceae, Bacillariophyceae, Euglenophyceae and Hepatecae.Zooplankton were five major taxa and they were Protozoa, Rotifera, Cladocera, Copepod and Ostracoda respectively.

Keywords: Ecology, Fertilizer, Miniature tank, Productivity, Plankton

Location: Environment Sciences Department, Jahangirnagar University, Savar-Dhaka

Start Date:

End Date:

Program Area: Crop-Soil-Water Management

Commodity: Aquatic animal, Fertilizer and manures

Objectives:

The study it was found that the total physicochemical parameters of water were suitable for aquaculture, drinking water, irrigation and domestic use.

Methodology:

Five miniature circular research tanks (MCRTs), each of 0.88 m² in diameter were used for this research work. For the obtaining scientific data in every step of research, these were established in usually sunny and well aerated place adjacent to the Environment Sciences Department, JU. Initially, one-third of each MCRT was covered with the Madhupur tract soil collected from the respective area and mixed with the following doses of organic manures but, always with 263 Kg ha^-1 lime (excluding MCRT-5) two days before filled up with natural pond water up to its neck. For recording, all the MCRTs were numbered 1-5 respectively and accordingly MCRT-5 was used as a controlled tank with neither of the treatments. After two days of watering, following doses of inorganic fertilizers were applied against the production of autotrophic plankton in different MCRTs. To follow the standard unit, applied treatments were expressed in Kg ha^-1. Organic manures and Inorganic fertilizers: Tanks Poultry drops (dry) Urea TSP MCRT-1 4375 kg ha^-1 137 kg ha^-1 117 Kg ha^-1; MCRT-2 2923 kg ha ^-1 29.2 kg ha^-1 525 Kg ha^-1; MCRT-3 1736 kg ha^-1 188 kg ha^-1 425 Kg ha^-1; MCRT-4 2500 kg ha^-1 106 kg ha^-1 224 Kg ha^-1 MCRT-5 Controlled. For water quality analysis, samples of water were collected 15 days after the preparation of MCRTs and the process continued accordingly March to February, 2012. For this reason, water samples were collected from each MCRT separately with a 250 ml beaker within 4:00 – 5:00 pm and instantly water temperature was determined using a Celsius thermometer (scale ranging from 0 – 100^oC; Model: SH-135 CE, China). Then, water pH, Dissolved oxygen, Total hardness and Total phosphorus were analyzed using standard methods as suggested by AOAC (1989) and APHA (1998). For the qualitative and quantitative study of autotrophic plankton, 100 ml water samples were collected before the water parameters analyses from each MCRT and immediately preserved in a conical flask containing Lugol’s solution and counted in the laboratory under a Nikon compound microscope (Japan) at a magnification of 400x and the procedure repeated three times with each sample. Calculation: Density as individualL^-1 = (V₁ x V₂) x T x 1000 where, V₁ = volume (ml) of plankton concentrate in three times. V₂ = volume (ml) of counted cells. T = Total number of individual plankter in three replicated counting. 1000 = Numerical value of the unit liter (L). All statistical analyses were performed with the help of a computer software SPSS program.

Source of Information: J. Environ. Sci. & Natural Resources, 10(1): 9-14 2017

Article Link (Online Journal): DOI: https://doi.org/10.3329/jesnr.v10i1.34687

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

From this study it can be concluded that successive improvement on the productive conditions within all the MCRTs were found. Among doses, the dose which treated in the MCRT-3 given best result. The characteristics of different species of plankton can sometimes help scientists to distinguish one water mass from another.

Knowledge Management: Journal