Papers by Manorama Thampatti KC, KAU
Science of The Total Environment
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Journal of the Indian Society of Soil Science
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International Journal of Chemical Studies, 2021
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International Journal of Current Microbiology and Applied Sciences, 2021
The present study investigated the effect of different nutrient management practices on soil C fr... more The present study investigated the effect of different nutrient management practices on soil C fractions, growth and yield of fodder maize variety- African tall. The treatments were seven in number - T1: POP recommendation, T2: Soil test based POP, T3: Organic nutrient management using TOF-F, T4: POP + AMF, T5: Soil test based POP + AMF, T6: Organic nutrient management + AMF, and T7: Absolute control. Among the soil C fractions, highest TOC content was recorded by T3 which was on par with T5 and T6 and highest DOC content was observed for T1 at both levels of sampling depths. The soil labile and recalcitrant fractions followed same trend at both levels of depth of sampling i.e. T5 was found to be superior which was on par with T6. The highest value for shoot weight, root volume, green fodder and dry fodder yield was observed in treatment T5 which was on par with T4. The root weight was higher for organic nutrient and AMF combination treatment – T6 (50.23 g/plant). The results indica...
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Resonance, 1999
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Climate change is the defining issue of our time and we are at a decisive moment. Kerala, the Sou... more Climate change is the defining issue of our time and we are at a decisive moment. Kerala, the Southernmost state of India, faces a myriad of climate change impacts on agriculture, human health, biodiversity, coastal areas and water availability in the recent years. The state’s unique geographical location with hilly Western Ghats bordering one side and coastal fragile ecosystems on the other side, erratic weather patterns, high population density, rapid urbanisation, environmental degradation along with climate change compound the vulnerability condition. However, the region lack ecosystem based climate vulnerability assessment and validation of adaptation strategies. Hence, the overall objective of this study is to assess and analyse the climate change vulnerability of each agro-ecological units of climate vulnerable hotspots of Kerala and to validate ecosystem based adaptation strategies. For this, the study aims to develop an open data mobile application tool kit for data collect...
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Climate Change and Community Resilience
The chapter presents three case studies on resilience initiatives adopted by communities in respo... more The chapter presents three case studies on resilience initiatives adopted by communities in response to water scarcity and severe floods exacerbated by climate change in the southern Indian state of Kerala. The post-flood management strategies undertaken by farmer collectives supported by a strong presence of the state resulted in sustainable outcomes. On the contrary, the resilience mechanisms to adapt to water scarcity have proved to be environmentally unsustainable and socially undesirable resulting in resource depletion and loss of social welfare. The participation of state and collective action was absent in the latter case. The study reiterates the importance of cohesive action from the government and local communities to generate sustainable community resilience programmes.
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Journal of the Indian Society of Soil Science, 2007
Phosphogypsum (PG), a by-product of phosphatic fertilizer industry, is used as an ameliorant in a... more Phosphogypsum (PG), a by-product of phosphatic fertilizer industry, is used as an ameliorant in acid soils that are rich in Fe and Al. It is also a source rich in Ca and S. A field experiment was carried out in a Typic Kandiudult to study the acid neutralizing ability of phosphogypsum and its influence on crop growth and yield of cowpea. The treatments include absolute control, package of practices recommendation of Kerala Agricultural University –200 kg ha−1 (POP), lime/PG @ full lime requirement (1 LR) and half LR, respectively and two combination treatments of both lime and PG each at ½ and ¼ LR, respectively. Application of PG had significant influence on the acidity components except exchangeable hydrogen. The lowest values for both exchangeable acidity and Al were recorded under PG at full LR and were significantly superior to rest of the treatments. But lime was more efficient in reducing the exchangeable hydrogen content of soil and improving soil pH, compared to PG. Phospho...
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International Journal of Current Microbiology and Applied Sciences, 2019
Rice is the single largest food source for the poor and the source of one quarter of global per c... more Rice is the single largest food source for the poor and the source of one quarter of global per capita. In India, rice is cultivated in an area of 43 million hectares (GOI, 2016). As far as Kerala is concerned, the major crop rice is an integral part of the wetland ecosystem with specific ecological functions. However, the recent years have witnessed the rapid decline in paddy area. Over the last three decades, area under rice in Kerala declined from 8.5 lakh ha to 1.99 lakh ha (FIB, 2017). According to the long term studies conducted International Journal of Current Microbiology and Applied Sciences ISSN: 2319-7706 Volume 8 Number 11 (2019) Journal homepage: http://www.ijcmas.com
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Journal of the Indian Society of Soil Science, 1998
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An investigation was carried out in rice suppot1ing acid sulphate soils occurring in Kuttanad bel... more An investigation was carried out in rice suppot1ing acid sulphate soils occurring in Kuttanad belt of Kerala which has been protected from salinity intrusion for the past twenty five years. by constructing a regulator across the lake through which the sea water enters and spread to the study area. The present paper indicates the acidity status of different soil layers on the upstream side of the regulator and how the acidity varies in accordance with the season and the closure of the regulator by analysing IS soil profiles ,md 97 surface samples collected during pre-monsoon. monsoon, post-monsoon and SUllllller se,lsons. Ninety per cent of the study area belongs to the soil order Entisols, dominated by the Typic Sulfaquents subgroup and the rest to Inceptisols. The other sllbgroups identified are Typic Tropopsamments, Typic Tropofluvent.s, Typic Fluvaquents and Fluventic Dyslropepts. Among the subgroups. Typic Sulfaquenls recorded lhe highest values for different forms of acidity. A...
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Over use of chemical inputs and exploitation of natural resources have degraded our ecosystem to ... more Over use of chemical inputs and exploitation of natural resources have degraded our ecosystem to a large extent. Our water bodies are drastically affected, especially due to the impact of heavy metal loading. The biomagnification that results from these difficult to degrade metals is naturally affecting the human health. The physical and chemical methods commonly employed for water purification are not only highly expensive but also further aggravate the pollution problem. Hence, all efforts must be taken to exploit the emerging green technology approach in pollution remediation. Several aquatic plants have specific affinity towards heavy metals and they flourish well in this contaminated environment. The common mechanisms of phytoremediation and varied type of aquatic plants with high remediation potential are reviewed in this chapter.
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Concepts and Strategies in Plant Sciences
Phytoremediation is a plant-based and cost-effective technology that could be the possible potent... more Phytoremediation is a plant-based and cost-effective technology that could be the possible potential method for providing an alternative to current treatment technologies for wastewater and contaminated ecosystems. It also enjoys popularity with the general public as a green technology. Aquatic macrophytes showed great potential in the field of phytoremediation. They are important tools for heavy metal removal since it basically involves the extraction and translocation of contaminants to aerial parts or inactivation of these toxic metals in a system. In order to exploit its full potential, a comprehensive understanding is needed as to how metal uptake, transport, and trafficking across plant membranes and distribution, tolerance, sensitivity, etc., take place under different environments. Aquatic plants in freshwater, marine and estuarine systems act as receptacle for several metals and have tremendous scope for application in remediation of heavy metals in the environment. Uptake and removal of contaminant varies for each category of aquatic macrophyte, viz. free-floating, submerged and emergent. The mechanisms of metal uptake, role of phytoremediators in metal pollution abatement and progress made in the practical application of phytoremediation of metals by aquatic macrophytes are reviewed in this paper. The paper discusses the phytoremediation potential of most promising aquatic macrophytes for different metals, their practical applications for environmental clean-up and method for safe disposal of phytoextracted biomass.
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Waste Management
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International Journal of Chemical Studies
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International Journal of Chemical Studies, 2021
Boron is an essential micronutrient which is required in trace amount by the crop plants for thei... more Boron is an essential micronutrient which is required in trace amount by the crop plants for their growth and development. There is a widespread deficiency of B in Indian soils and it has emerged as the second most deficient micronutrient after zinc. As its requirement is less, the deficiency can be corrected with the application of organic manures to a certain extent. The boron present in the soil exists in different chemical forms. The different fractions of B in the soil are readily soluble (Rs-B), specifically adsorbed (Spa-B), oxide bound (Ox-B), organically bound (Org-B) and residual B (Res-B). All these fractions together form the total B (T-B) content in the soil. As application of organic manures had a positive influence on the B availability, an incubation study was conducted for period of 24 weeks to analyze the release pattern of B and their dynamics in red loam soil amended with different organic fertilizers. The availability of B in the soil was mainly influenced by th...
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Papers by Manorama Thampatti KC, KAU