Show simple item record Siddiqui, Samina Adams, William A. Scullion, John 2009-11-11T13:13:56Z 2009-11-11T13:13:56Z 2002-01-02
dc.identifier.citation Siddiqui , S , Adams , W A & Scullion , J 2002 , ' The phytotoxicity and degradation of diesel hydrocarbons in soil ' Journal of Plant Nutrition and Soil Science , vol 164 , no. 6 , pp. 631-635 . DOI: 10.1002/1522-2624(200112)164:6<631::AID-JPLN631>3.0.CO;2-E en
dc.identifier.issn 1522-2624
dc.identifier.other PURE: 128424
dc.identifier.other PURE UUID: 107b5b1f-a503-4d91-baf8-a028f44bda83
dc.identifier.other dspace: 2160/3506
dc.identifier.other DSpace_20121128.csv: row: 2717
dc.identifier.other Scopus: 0042908755
dc.description Siddiqui, S., Adams, W. A., Schollion, J. (2001). The phytotoxicity and degradation of diesel hydrocarbons in soil.   Journal of Plant Nutrition and Soil Science-Zeitschrift Fur Pflanzenernahrung Und Bodenkunde, 164, (6), 631-635. Sponsorship: Government of Pakistan en
dc.description.abstract Hydrocarbon contamination in soils may be toxic to plants and soil microorganisms and act as a source of groundwater contamination. The objective of the study was to evaluate the fate of adding diesel in soil with no previous history of hydrocarbon contamination. Particular aspects examined were soil respiration, changes in microbial population, breakdown of diesel hydrocarbon and phytotoxicity to germination of ryegrass. Soil respiration was measured as evolved CO2. Bacterial population was determined as Colony Forming Units (CFUs) in dilution plates, and fungal activity was measured as hyphal length. The fate of individual hydrocarbons was determined by GC-MS after extraction with dichloromethane. When 0.64 % (w/w) of diesel was added to soil, the respiration response showed a lag phase of 2 days and maximum respiration occurred at day 7. The lag phase was 5 days and maximum respiration occurred at day 11 in soil after adding 1.6 %, 4.0 %, and 13.6 % of diesel (w/w). After the peak, respiration decreased up to 20 days, in each of the four levels of diesel addition to the soil. Thereafter, respiration becomes more or less constant but substantially greater than the control. Diesel addition up to 4.0 % (w/w) increased the bacterial population to 10 fold but fungal hyphal length did not increase. However, bacterial population did not increase after adding 13.6 % (w/w) of diesel and fungal hyphal length was significantly less than the control and other three levels of diesel. Removal of inhibition to germination of perennial ryegrass was linked to the decomposition of n-C10 and n-C11 hydrocarbons and took from 11 to 30 days depending on the levels of diesel added to the soil. Contamination with 13.6 % (w/w) of diesel inhibited the germination of perennial ryegrass until 24 weeks of incubation. en
dc.format.extent 5 en
dc.language.iso eng
dc.relation.ispartof Journal of Plant Nutrition and Soil Science en
dc.rights en
dc.subject hydrocarbons en
dc.subject phytotoxicity en
dc.subject germination en
dc.subject diesel en
dc.subject decomposition en
dc.subject respiration en
dc.title The phytotoxicity and degradation of diesel hydrocarbons in soil en
dc.type /dk/atira/pure/researchoutput/researchoutputtypes/contributiontojournal/article en
dc.contributor.institution Institute of Biological, Environmental and Rural Sciences en
dc.description.status Peer reviewed en

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