Effect of biologically treated petroleum sludge on seed germination and seedling growth of Vigna unguiculata (L.) Walp. (Fabaceae)

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ID: 2872
2014
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Abstract
The present investigation was carried out to study the response of different concentrations of treated petroleum sludge on seed germination, root and shoot length and tolerance of Vigna unguiculata (L.) Walp. The biologically treated petroleum sludge with bacterial consortium showed 54.8% reduction in total petroleum hydrocarbons. Treated sludge was utilized with agricultural soil in known concentration for the assessment of growth of V. unguiculata. A remarkable absence of seed germination was observed at higher sludge concentration. The different concentrations of treated petroleum sludge showed severe decline on the length, weight and vigour index of the tested seedlings with increasing sludge concentrations. The results showed that the difference in rate of seed germination was significant among various concentrations. Under environmental stress condition, germination is the most critical phase of life cycle in crop plants. In this present study, the high oil content found to alter the osmotic relation between seed and water and thus reduce the amount of water absorbed. It was concluded that the concentration of nutrients and oil present in the treated sludge were toxic to the plant.
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sangeetha2014effectbrazilian Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Sangeetha, Jeyabalan;Thangadurai, Devarajan;
Journal brazilian archives of biology and technology
Year 2014
DOI
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http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132014000300017&lng=en&tlng=en
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