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Effects of Urea Super Granule (usg) on the Limnological Parameters of Pond and Fish Production

M. M. Rahman
Planning Division, Ministry of Planning, Govt. of the Republic of Bangladesh

N. Sultana
Dept. of Fisheries Biology and Aquatic Environment, Facul ty of fisheries Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur

M. F. A. Mollah
Dept. of Fisheries Biology and Genetics, Bangladesh Agricultural University, Mymcnshingh

M. Karim
Dept. of Fisheries Biology and Genetics, Bangladesh Agricultural University, Mymensingh

T. Akter
Dept. of Fisheries Biology and Genetics, Bangladesh Agricultural University, Mymensingh

Abstract/ Executive Summary:

The efficacy of urea super granule (USG) was found out comparing its effects on pond productivity and fish production with that of normal granular urea. There were two treatments with two replicates of each. Treatment 1 was designed with fortnightly application of USG (50 kg/ha), TSP (25 kg/ha) and cow dung (1000 kg/ha) while treatment 2 was designed with fortnightly application of normal granular urea (50 kg/ha), TSP (25 kg/ha) and cow dung ( 1000 kg/ha). The ponds were stocked with seven carp species with a stocking density of 40 fingerlings/decimal. Variation in water and soil quality parameters, plankton population and gross production of fish were used to compare the effectiveness of the two types of urea. Although most of the water quality parameters were within the acceptable range for fish culture in both the treatments but dissolved oxygen, nitrate- nitrogen and phosphate-phosphorus were significantly higher (P<0.05) in treatment 1 where USG was used. Quantitatively, plankton population was significantly higher (P<0.05) in treatment 1. There was no significant variation (P>0.05) between the treatments regarding soil quality parameters and gross production of fish but the economic analysis revealed a relatively higher net profit in treatment I.

Keywords: Urea super granule, Fish production

Location: Panna Bohumukhi Krishi Khamar (PBKK) located in village Balughata, Thana-Nalitabari. District Sherpur.

Start Date: 15-02-2008

End Date: 30-01-2009

Program Area: Animal Health and Management

Non-commodity: Performance

Objectives:

Limnological parameters of soil and water of pond.
Enhancement of primary and secondary productivity in the pond water.
Growth and production of fish.
Economics of fish production.

Methodology:

The experiment was carried out in four ponds in Panna Bohumukhi Krishi Khamar (PBKK) located in village Balughata, Thana-Nalitabari. District Sherpur. A ll the ponds were rectangular in shape, situated around the farm. house and varied from 40-80 decimal in size. The experimental ponds were arbitrarily numbered as P1, P2, P3 and P for recording data and reporting the result properly. The experiment was planned in Randomized Block Design. There were two treatments with two replicates of each. Treatment 1 was designed with fortnightly application of USG (50 kg/ha), TSP (25 kg/ha) and cow dung (1000 kg/ha) while treatment 2 was designed with fortnightly application of normal granular urea (50 kg/ha). TSP (25 kg/ha) and cow dung (1000 kg/ha). Before starting the experiment, the ponds were thorough ly prepared. A?fter a week of fertilization, the ponds were ready for stocking of fish.

Source of Information: Ann. Bangladesh Agric. (2010) 14 (1 &2): 85-97

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

A simple economic (cost-benefit) analysis was performed to estimate the amount of profit that has been generated from these two types of treatments. The cost of production was based on the price of Sherpur whole sale market (1999) for the input used. The cost of leasing ponds was not included i n this analysis. The cost of production was slightly higher in T₁ (Tk.158,356.68/ha) receiving USG than T₂ (Tk. 154,511.96/ha) receiving normal urea. The net profit was also higher in the same treatment. However, further studies with appropriate design covering more doses, frequencies and mode of USG application should be conducted in different aqua-ecological zones.

Knowledge Management: Journal