Agricultural Research Management Information System

Home
Research Summary
Search
About Us
- ARMIS
- Brochure
Contact Us
Report
User Request
Data Input
Help
- Operation Manual
  - PDF
  - Video
- Program Area & Commodity
We have reached 37600 number of research entries at this moment.

- Logout

Research Detail

Home
Research
Detail

Germination and Seedling Growth of Rice (oryza Sativa L.) as Affected by Varying Concentrations of Loom-dye Effluent

Md. Arifur Rahman
Department of Agricultural Chemistry, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

Md. Sohanur Rahman
Entomology Department, Pest Management Division, Bangladesh Jute Research Institute, Dhaka-1207, Bangladesh

K.M. Mohiuddin
Department of Agricultural Chemistry, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

Md. Akhter Hossain Chowdhury
Department of Agricultural Chemistry, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

Md. Abul Khair Chowdhury
Department of Agricultural Chemistry, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

Abstract/ Executive Summary:

Indiscriminate discharge of industrial effluent has become a serious problem for the agro-ecological environment in most of the areas of Bangladesh. The effects of loom-dye effluents on seed germination and early seedling growth of rice (Oryza sativa L.) were investigated by conducting an experiment in the laboratory of the Department of Agricultural Chemistry of Bangladesh Agricultural University, Mymensingh. Three types of loom-dye effluents were applied in sterilized petridishes at different loading ratios. Seven treatments (i.e., T₀, T₁, T₂, T₃, T₄, T₅and T₆with 0, 5, 10, 25, 50, 75 and 100% effluent, respectively) of each effluent were used following completely randomized design (CRD) and replicated three times. Subsequently, Pb, Fe, Zn, Mn and Cr accumulation were also investigated in the harvested rice seedlings. Rice seed showed a significant difference in germination percentage with varying levels of effluent application at different days after setting of germination. The decreased seed germination rate and seedling growth of rice were observed with increased concentration of loom-dye effluents. The highest germination speed (97.8%) was obtained from control whereas the lowest germination speeds were obtained from T₅ of black, and T₆ of both black and violet effluents. Phytotoxic effects of loom-dye effluents on germination and radical length were extreme at 100% effluent concentration having the order of black > violet > pink. The maximum radical length (6.4 cm) and plumule length (7.5 cm) were observed with T₁ of pink dye effluent whereas the minimum length of radical and plumule were obtained from T₆treatment of the effluents. The highest fresh weight (39.8 mg petridish^–1), dry weight (5.7 mg petridish^–1) and seedling vigor index (746.7%) were also observed from T₁ of pink dye effluent. The maximum uptake of Pb, Fe, Mn and Zn was 0.48, 3.81, 0.79 and 0.13 μg g⁻¹, respectively. The uptake of Cr was below the detectable limit. Total heavy metal accumulation in rice was in the following order: Fe>Mn>Pb>Zn>Cr. Results showed that the higher concentration of loom-dye effluent showed the higher toxic effects on different parameters of germination and early seedling growth compared with the lower effluent concentrations.

Keywords: Rice, Germination, Dye effluent, Heavy metal, Toxicity

Location: Department of Agricultural Chemistry, Bangladesh Agricultural University, Mymensingh

Start Date: 00-08-2017

End Date: 00-10-2017

Program Area: Crop-Soil-Water Management

Commodity: Rice

Objectives:

This research work was designed to study the effects of loom-dye effluent collected from various loom-dyeing industries of Sirajganj on germination and early seedling growth of rice as a preliminary step before the field trials.

Methodology:

Loom-dye effluents were collected from different dyeing industries of Bhangabari, Dhukuriabera and Rajapur of Belkuchi under Sirajganj district in 2 L plastic containers. The collected dye effluent samples were analyzed for their physico-chemical properties in the laboratory of Department of Agricultural Chemistry, Bangladesh Agricultural University, Mymensingh as per the standard methods (APHA, 2012). The detailed procedure was followed as described by Rahman et al. (2018). Germination experiment was performed in Postgraduate Research Laboratory of the Department of Agricultural Chemistry, Bangladesh Agricultural University, Mymensingh during the period of August to October 2017 and total sixty-three petridishes were lined with double layer of filter paper. Prior to the experimental setup, the petridishes were sterilized properly and incubated at 28±2°C for germination in dark (ISTA, 1985). Rice var. BRRI dhan28 collected from Bangladesh Agricultural Development Corporation (BADC), Mymensingh, was chosen as a test crop for this study. Fifteen healthy and uniform rice seeds were selected and thoroughly washed with distilled water to remove dust and fungal traces followed by sterilization with 0.1% HgCl₂. Seven treatment levels viz., T₀, T₁, T₂, T₃, T₄, T₅ and T₆ with 0, 5, 10, 25, 50, 75 and 100% loom-dye effluent were used following completely randomized design (CRD) with three replications. Seedlings were harvested at 7 days after sowing (DAS) of seed. The germination percentage was measured. The seedlings were collected from each treatment and their fresh weights were measured. Then seedlings were dried in an oven at 60 ºC for 24 hours to measure dry weights. The results were presented as means ± SE (standard error of means) and these were analyzed using SPSS (20.0) and Microsoft Excel program.

Source of Information: J Bangladesh Agril Univ 17(2): 153–160, 2019

Article Link (Online Journal): https://doi.org/10.3329/jbau.v17i2.41938

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Based on the experimental observations, it was found that the declined rate of germination percentage, germination speed, radical length, plumule length and seedling vigor index were found with increasing effluent concentrations. The pink dye effluent having lower EC and TDS comparatively imposed a less adverse effect on different parameters. The overall results suggested that the loom-dye effluent should not be used for seed germination and early seedling growth of rice without proper treatment.

Knowledge Management: Journal