Nirmal Chandra Roy

Sylhet Agricultural University

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Kazi Rabeya Akther

Sylhet Agricultural University

Mohammad Amzad Hossain

Sylhet Agricultural University

Debasish Biswas

Medical College and Hospital, Kolkata

Md. Atick Chowdhury

Sylhet Agricultural University

Valentina Tafuro

University of Turin

D K Biswas

Central Inland Fisheries Research Institute

Sohel Mian

Sylhet Agricultural University

Benedetto Sicuro

University of Turin

Chironjib Singha Samanta Chandan

Texas State University

Farjana Afrose

National Institute of Cardiovascular Diseases

Cooperative Institutions

Sylhet Agricultural University

University of Rajshahi

Hajee Mohammad Danesh Science and Technology University

Bangladesh Fisheries Research Institute

Bangladesh Agricultural University

Khulna University

Sher-e-Bangla Agricultural University

Jahangirnagar University

University of Chittagong

Chattogram Veterinary and Animal Sciences University

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Evaluation of Performance of Carp-SIS Polyculture Technology in the Rural Farmers' Pond

Asian Fisheries Science (2002)

Nirmal Chandra Roy A.H.M. Kohinoor M.A. Wahab Shakuntala H. Thilsted

Polyculture

10.33997/j.afs.2002.15.1.005

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Citations (25)

Observation of Water Quality Parameters on Induced Breeding of Bagrid Catfish in Bangladesh

American Journal of Agricultural Science Engineering and Technology (2022)

Md. Fakhruddin Md. Yeamin Hossain Saleha Jesmine Kazi Rabeya Akther Nirmal Chandra Roy

Induced breeding of Bagrid catfish, Mystus tengara, is not widely practiced in Bangladesh, and seed is not readily available. The study was conducted to identify the optimum range of water quality parameters to best induced breeding results in a hatchery in Pabna district, Bangladesh. Fish breeding and other related work have been done in the hatchery. The (mean ± SD) temperature, dissolved oxygen, and pH were ranged from 29.75±1.22oC to 33.94±0.18oC; 4.40±0.57 to 5.35±1.06 mg/l; and 7.10±0.14 to 7.40±0.28 in brood pond and 26.50±0.71oC to 31.00±1.41oC; 3.80±0.14 to 5.50±0.42; and 7.00±0.00 to 7.30±0.42 in overhead tank, respectively. The highest fertilization rate (80%) was observed in brood pond water at the 7th and 8th weeks at temperatures of 33.94±0.18o C and 32.00±1.07oC, as well as oxygen concentrations of 5.20±1.41 mg/l, 4.60±0.14 mg/l, and pH values 7.20±0.14, 7.20±0.00, respectively. In the 9th week of the experiment, the temperature, dissolved oxygen, and pH values of 28.00±1.41oC, 5.50±0.42 mg/l and 7.00±0.00, respectively, were shown to have the highest hatching rates. A strong positive correlation was found among dissolved oxygen, temperature, fertilization rate, and hatching rate. Particularly, the brood raising pond's water quality parameters showed a strong positive correlation with fertilization rate. On the other hand, water quality parameters of the overhead tank showed a strong positive correlation with hatching rate. This study will help hatchery technicians in comprehending the requirements for M. tengara species induced breeding in terms of water quality.

Hatchery

10.54536/ajaset.v6i2.519

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Human Resource Management in the Indian Tea Industry

Routledge eBooks (2021)

Nirmal Chandra Roy Debasish Biswas

Liberalization, Privatization and Globalization policy was advocated in India in 1991 under the supervision of P.V. Narasimha Rao, the then Prime Minister of India. As a consequence, the tea plantation industry was largely affected. It has confronted difficult competition because of the simplification of tariff barriers and the removal of the quantity restrictions on imports. The result of these on the share of export of Indian tea has declined, the price has plunged, and the profitability has reduced. To remain competitive in the market, tea-producing companies have been forced to reduce the various costs, especially labour costs. Due to this, tea companies are not in a position to fulfil their responsibilities such as health, safety, welfare, and working conditions to the workers. Besides, improper recruitment of labour, lack of proper training facilities, and even irregularities in payment of wages have been increased significantly. As a result, 1.2 million workers in the tea industry to sustain themselves and their families have been adversely affected. This leads to labour unrest and the industry has become vulnerable. The final impact of all these issues spreads to the quality of tea and profitability of the industry in India. This book examines the existing human resource management practices in the Indian tea industry. It adopts a simplified yet comprehensive approach to showcase workforce management in the tea industry. This book will be of value to postgraduate students, researchers, HR professionals, and policymakers in the fields of human resource management, business history, and industrial relations.

10.4324/9781003133339

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Citations (2)

Study on The Labour Welfare of Tea Plantations in North Bengal Region

Nirmal Chandra Roy Debasish Biswas

BENGAL

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Economics of Carp-SIS Polyculture in Rural Farmer’s Pond

Pakistan Journal of Biological Sciences (2002)

Nirmal Chandra Roy M.A. Wahab Helena Khatoon Shakuntala H. Thilsted

Polyculture

10.3923/pjbs.2003.61.64

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Citations (14)

Environmental and human factors affecting Indian major carps' spawning in Halda River, Bangladesh

Archives of Agriculture and Environmental Science (2024)

Kazi Rabeya Akther Mohammad Amzad Hossain Abdullah Al Asek MD. Manzoorul Kibria Nirmal Chandra Roy

The spawning success of Indian major carps (IMCs) in the Halda River is intricately linked to favorable environmental and hydrological conditions, which have shown significant variability in recent years. This research aimed to investigate the environmental and anthropogenic factors driving to decline in IMC spawning and propose sustainable management strategies. Field investigations were conducted across four key spawning sites, analyzing hydrological parameters, climatic trends, and anthropogenic influences. Results revealed a sharp decline in IMC spawning success in the year 2021, with egg production dropping to 8,580 kg and fry yield to 105.73 kg which reductions of 66% and 73.3%, respectively, compared to 2020. Key environmental stressors included rising temperatures (contributing 90% of observed variation), reduced rainfall (86%), decreased hill water runoff (84%), and saline intrusion (76%). Anthropogenic disturbances, such as pollution (76%), river bend cutting (80%), rubber dams’ installation (78%), and abandoned sluice gates (84%), intensified these challenges. This study reveals climatic and anthropogenic impacts on IMC spawning decline in the Halda River, stressing the need for ecosystem-based conservation. These findings underscore the urgent need for targeted mitigation measures, including minimizing anthropogenic disturbances and restoring natural river dynamics, to enhance the resilience of IMC spawning habitats and ensure sustainable fisheries in the Halda River.

10.26832/24566632.2024.0904026

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Impact of COVID-19 on the students' learning: an empirical study in India

International Journal of Knowledge and Learning (2024)

Nirmal Chandra Roy

2019-20 coronavirus outbreak

Coronavirus

Empirical Research

10.1504/ijkl.2024.139554

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