Subhas Sarkar

Subhas Sarkar
Central Institute of Freshwater Aquaculture | CIFA

PhD

About

20
Publications
33,684
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490
Citations
Additional affiliations
June 2015 - December 2015
The University of Newcastle, Australia
Position
  • Visiting Scientist

Publications

Publications (20)
Article
Full-text available
The Green House Gas Emission (GHGs) from the carp culture ponds (n = 12) of West Godavari, Krishna, and Guntur districts of Andhra Pradesh and from the ponds (n = 4) of Moyna, East Medinipur district of West Bengal, India was assessed through carbon storage and carbon footprint analysis. The average inputs as Carbon Equivalent (CE) were 14407 ± 265...
Article
Contaminant removal from water involves various technologies among which adsorption is considered to be simple, effective, economical, and sustainable. In recent years, nanocomposites prepared by combining clay minerals and polymers have emerged as a novel technology for cleaning contaminated water. Here, we provide an overview of various types of...
Article
Full-text available
The excessive and indiscriminate uses of carbon (C) and nitrogen (N) through feed, fertilizers and manures in aquaculture ponds could play a vital role in the emission of greenhouse gases such as carbon dioxide (CO 2), methane (CH 4), and nitrous oxide (N 2 O). Therefore, it is important to know about the distributions of N and C in the aquaculture...
Chapter
Full-text available
The presence of various inorganic and organic pollutants in aquatic streams has readily increased as a result of industrialization and urbanization. Among the technologies available, adsorption has widely been used for the removal of various contaminants from aqueous media, and accordingly different adsorbents have already been prepared over the ye...
Article
Full-text available
We surveyed the fish farmers of five states, viz. Andhra Pradesh, Karnataka, Gujarat, Odisha and West Bengal of India for adaptation and mitigation strategies of climate change impact in freshwater aquaculture. In monsoon period especially when the cyclone occurred, overall 9% fish farmers responded regarding fish migration from one pond to another...
Article
2017 Elsevier Inc. There is a growing concern about climate change, and soils have attracted significant research attention as a sink for atmospheric CO 2 . Mechanisms of soil organic carbon (SOC) stabilization have received much focus recently due to its relevance in controlling the global C cycle. The purpose of this chapter is to review our exis...
Article
Full-text available
In this work, we aimed to study the trend of the annual and seasonal mean rainfall and temperature of India over the period of 1901–2014. The long-term trend of rainfall and temperature was evaluated by linear regression and Mann–Kendall test. The magnitude of the trend was assessed by Sen’s Slope. In the last 30 years, the annual and summer rainfa...
Chapter
Knowledge on the fate and transport of heavy metals is essential for predicting the environmental impact of metal contamination on agricultural soils. This chapter presents an overview of various factors that are involved in controlling the retention and mobility of heavy metals in soils with a special reference to soil mineralogy. The bioavailabil...
Chapter
Agricultural practices involving intensive applications of chemical fertilizers can be harmful to the environment. Soil amendments can serve as an alternative source of plant nutrients and simultaneously improve the physical, chemical and biological properties of soils. Many soil amendments are produced from organic and inorganic waste materials. T...
Chapter
There is a growing concern about climate change, and soils have attracted significant research attention as a sink for atmospheric CO2. Mechanisms of soil organic carbon (SOC) stabilization have received much focus recently due to its relevance in controlling the global C cycle. The purpose of this chapter is to review our existing knowledge of soi...
Article
Soil needs simultaneous replenishment of various nutrients to maintain its inherent fertility status under extensive cropping systems. Replenishing soil nutrients with commercial fertilizer is costly. Among various fertilizers, deposits of potassium (K) ore suitable for the production of commercial K fertilizer (KCl) are distributed in few northern...
Chapter
Full-text available
Soil needs simultaneous replenishment of various nutrients to maintain its inherent fertility status under extensive cropping systems. Replenishing soil nutrients with commercial fertilizer is costly. Among various fertilizers, deposits of potassium (K) ore suitable for the production of commercial K fertilizer (KCl) are distributed in few northern...
Article
Full-text available
A leaching study was conducted to evaluate effectiveness of fertilizer loaded nanoclay/superabsorbent polymer composites (NCPCs) as a slow release carrier of nutrients. Three types of NCPCs (I, II and III) synthesized from Kaolinite, Illite and Smectite dominated nanoclays, respectively were loaded separately with di-ammonium phosphate (DAP) and ur...
Article
Water and nutrients are two important inputs to agriculture that need to be used judiciously with higher efficiency to save these limited resources. For these purposes, a series of nanoclay–polymer composite (NCPC) superabsorbent nutrient carriers were prepared. These NCPCs were based on the reactions of different types of nanoclays (10 wt %) with...
Article
Full-text available
Soil available nutrients are very sensitive to change in response to management practices, and are considered to be chemical indicators of soil quality. The present investigation was conducted using two tillage managements for rice (puddled and not puddled) and wheat (conventional tillage and no-tillage), three water managements and nine nutrient m...
Article
Full-text available
The main aim of this research was to study the P and N releasing behaviour from fertilizer loaded nanoclay superabsorbent polymer composite (NCPC) and to test its effectiveness as a carrier of slow release fertilizer using pearl millet (Pennisetum glaucum) as test crop grown under Inceptisols. Results revealed that availability of Olsen P, 0.01M Ca...
Article
The hypothesis is that the exfoliated and dispersed nanoclay in the superabsorbent polymer matrix controls the rate of diffusion of ions /molecules out of absorbed water by the polymer matrix. The objective of the study was to assess the P and N release from fertilizer loaded nanoclay superabsorbent polymer composite (NCPC) and to test its potentia...

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Projects

Projects (3)
Project
Farmers first is an approach which focuses enriching knowledge and integrating technologies in the farmer’s conditions and to enhance farmers-scientist interface. Emphasis of the project will be on farmers’ farm, innovations, resources, science and technology. Small holders, landless and farm women will be specially addressed through technology integration modules. It has four components – enhancing farmer-scientist interface; economically viable technology options; partnership and institution building and e-enabled knowledge sharing.