Dose-related effect of fly ash on edaphic properties in laterite cropland soil

Roy, Gourab; Joy, V. C.

doi:10.1016/j.ecoenv.2010.10.041

Cited by 24 publications

(8 citation statements)

References 22 publications

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“…FA having various beneficial nutrients like B, Mg, P, S, Si, Ca, Mn, Fe, Cu and Zn, may be utilized in agriculture for more crop production (Sharma and Kalra 2006;Yunusa et al 2006;Basu et al 2009;Roy and Joy 2011). However, various reports (Singh et al 1997;Pandey et al 2009) indicated that lower doses of FA (5-10 %) improve plant growth and production, while higher supplementation (20-30 %) considerably alters plant metabolism due to its repetitive application over the years and resulted in degraded soil health and more availability of toxic metal (Narayana et al 2010;Chattopadhyay and Bhattacharya 2010).…”

Section: Introductionmentioning

confidence: 99%

Fly-ash augmented soil enhances heavy metal accumulation and phytotoxicity in rice (Oryza sativa L.); A concern for fly-ash amendments in agriculture sector

et al. 2015

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Fly-ash (FA) utilization in the agriculture sector is very common practice due to presence of beneficial elements required for plant growth. However, presence of excessive amount of toxic metals in FA may be serious concern for agriculture. In the present study, the effects of FA on soil health, plant growth, toxic metal accumulation and antioxidant responses were investigated in rice (Oryza sativa L.), grown on soil amended with 50 % FA in natural condition. FA application resulted in reduction in soil enzymatic activities viz., dehydrogenase, acid phosphatase, b-glucosidase and urease than garden soil (GS). FA amendments significantly decreased the root, shoot and panicle length and augmented sterility in rice. Interestingly, ICPMS analysis for metal accumulation revealed that the total accumulation of toxic metals, particularly Cd, Cr, Pb and As were 14-15 fold higher in roots and shoots and 4-20 fold higher in grains for the plants grown on FA amended soil than GS. The levels of nutrient elements viz., Mn, Co, Cu and Se were lesser in grains of FA treated soil than GS. Lipid peroxidation was increased in root and shoot of FA treated plants indicating oxidative stress. Activities of various antioxidant enzymes viz., SOD, APX, GPX, GR and their isozymes were correlated to each other and also increased against heavy metal induced toxicity. Human associated risk analysis revealed that the calculated maximum tolerable daily intake values for toxic metals (lg d -1 ) viz., Cr, As, Cd, Hg and Pb was beyond the safe limit in the rice grown in FA implicated soil. In conclusion, 50 % FA implication deteriorates the soil quality, rice production and elevates the toxic metals in grains, which may be a concern for safer rice consumption.

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Section: Introductionmentioning

confidence: 99%

Fly-ash augmented soil enhances heavy metal accumulation and phytotoxicity in rice (Oryza sativa L.); A concern for fly-ash amendments in agriculture sector

et al. 2015

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“…The application of CFA to ASL soil at rates 7.5 and 15% increased the levels P, Mg, Ca, Na, S, B, and Co, and decreased the levels of K, Al, Fe, and Mn in the resulting CFA-soil admixtures (Table 1). Roy and Joy [35] in their study on the dose-related effect of CFA on edaphic properties in laterite cropland soil reported that Ca and Na increased with CFA dose and time, but K decreased. Dash et al [36] also reported decreased levels of P and K, and increased level of Fe with increased CFA amendment rate.…”

Section: Discussionmentioning

confidence: 99%

Bioethanol Production from Switchgrass Grown on Coal Fly Ash-amended Soil

Awoyemi¹,

Adeleke²

2017

WJAR

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Potentially toxic concentrations of certain mineral elements may be taken up in plant biomass produced on coal fly ash (CFA) contaminated soil. This raises concerns about efficiencies of downstream processes, such as hydrolysis and fermentation involved in biomass conversions to bioethanol. A greenhouse pot experiment was conducted to assess bioethanol yield from switchgrass biomass produced on CFA-amended soil (0, 7.5 and 15 %, w/w CFA/soil). Separate aliquots of the CFA-amended soils were either inoculated with isolate of arbuscular mycorrhizal fungi (AMF), Rhizophagus clarus, or fortified with reduced glutathione (GSH). Mineral elements in the CFA-amended soils and plant tissues were determined using ICP-OES. Shoot samples of harvested biomass were subjected to microwave-assisted acid pretreatment, enzymatic hydrolysis and fermentation. The reducing sugar (glucose) and bioethanol in the biomass hydrolysate were determined by spectrophotometry. Results showed that CFA had a concentration-dependent increase on the levels of the mineral elements in soils that were amended. Subsequent uptake of the mineral elements in switchgrass tissues was modulated by CFA-soil amendment, AMF inoculation, and GSH fortification. The glucose concentrations in biomasss hyzrolysate of switchgrass grown on 7.5 and 15% CFA-amended soils were significantly higher (p < 0.05) than the unamended (control) soil without significant adverse effect on the bioethanol yield. The bioethanol concentration (µg/mg DW) in the fermented hydrolysate of switchgrass grown on 15% CFA-amended soil (26.63) was higher than the control soil (24.46). Likewise, AMF and GSH enhanced bioethanol yield from hydrolysate of switchgrass biomass grown on the CFA-amended soil. Our results indicated that coupling CFA-amended soil with either AMF or GSH can enhance bioethanol yield.

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“…Similarly, an increase was observed in the population of mycorrhizal fungi and Gram-negative bacteria when bituminous FA was amended at a rate of 505 Mg ha À1 . FA (at 100 t/ha)-amended tropical red laterite soil was reported to be safe for soil microbial communities (Roy and Joy 2011). Selective dosage of NPK fertilizers along with FA was found to significantly increase the population of bacteria when compared with the control set which could be due to the complementary impact of FA with NPK fertilizer (Yeledhalli et al 2007).…”

Section: Microbial Communities In Soil Amended With Famentioning

confidence: 99%

Composition and Dynamics of Microbial Communities in Fly Ash-Amended Soil

Varshney

Mohan

Dahiya

2020

Plant Microbiome Paradigm

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Fly ash (FA), solid waste residue, is a by-product of thermal power plant, and its disposal is considered to be the current biggest challenge faced by the entire world. Various studies have revealed that addition of FA to the soil may improve the physical, chemical, and biological properties of soil mixture. FA is also considered to provide readily available soil micro-and macronutrients. Lower doses of FA enhance the nutritional status of agricultural soil, thereby promoting plant growth, whereas higher doses of FA result in heavy metal pollution leading to deleterious effects which hinder the soil microbial communities and related enzymatic activity. Practically, FA is utilized in agriculture due to its usage as "ecofriendly and costeffective" soil/fertilizer amendment which depends upon various factors like soil types, climatic conditions, plant selected for growth, etc. However, combined biotechnological approaches (organic and inorganic) need to be applied to soil-FA mixtures in order to reduce the amount of toxic elements present in FA and also to maintain the nutrient status as well as soil microbial activity. Overall, the lower doses of FA application could be utilized to revamp the soil structure, soil microflora, N-cycling process, and enzymatic activity which have a significant role in promoting the growth of plants.

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Dose-related effect of fly ash on edaphic properties in laterite cropland soil

Cited by 24 publications

References 22 publications

Fly-ash augmented soil enhances heavy metal accumulation and phytotoxicity in rice (Oryza sativa L.); A concern for fly-ash amendments in agriculture sector

Fly-ash augmented soil enhances heavy metal accumulation and phytotoxicity in rice (Oryza sativa L.); A concern for fly-ash amendments in agriculture sector

Bioethanol Production from Switchgrass Grown on Coal Fly Ash-amended Soil

Composition and Dynamics of Microbial Communities in Fly Ash-Amended Soil

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