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Published online 9 January 2007
Published in J Environ Qual 36:216-225 (2007)
DOI: 10.2134/jeq2006.0252RA
© 2007 American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America
677 S. Segoe Rd., Madison, WI 53711 USA
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Application of Two Organic Wastes in a Soil Polluted by Lead

Effects on the Soil Enzymatic Activities

M. Tejadaa,*, M. T. Hernandezb and C. Garciab

a Departamento de Cristalografía, Mineralogía y Química Agrícola, E.U.I.T.A. Universidad de Sevilla, Crta de Utrera km. 1, 41013 Sevilla, Spain
b Departamento de Conservación de Suelos y Agua y Manejo de Residuos Orgánicos, Centro de Edafología y Biología Aplicada del Segura, CEBAS-CSIC, P.O. Box 4195, 30080 Murcia, Spain


Figure 1
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  		Fig. 1. Percentage inhibition of urease activity in soils polluted with different rates of Pb during (a) 1 d, (b) 7 d, (c) 15 d, and (d) 75 d. NS, *, **, ***: nonsignificant or significant at p < 0.05, 0.01, or 0.001, respectively.

 

Figure 2
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  		Fig. 2. Percentage inhibition of BBA-protease activity in soils polluted with different rates of Pb during (a) 1 d, (b) 7 d, (c) 15 d, and (d) 75 d. NS, *, **, ***: nonsignificant or significant at p < 0.05, 0.01, or 0.001, respectively.

 

Figure 3
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  		Fig. 3. Percentage inhibition of ß-glucosidase activity in soils polluted with different rates of Pb during (a) 1 d, (b) 7 d, (c) 15 d, and (d) 75 d. NS, *, **, ***: nonsignificant or significant at p < 0.05, 0.01, or 0.001, respectively.

 

Figure 4
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  		Fig. 4. Percentage inhibition of alkaline phosphatase activity in soils polluted with different rates of Pb during (a) 1 d, (b) 7 d, (c) 15 d, and (d) 75 d. NS, *, **, ***: nonsignificant or significant at p < 0.05, 0.01, or 0.001, respectively.

 

Figure 5
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  		Fig. 5. Percentage inhibition of arylsulfatase activity in soils polluted with different rates of Pb during (a) 1 d, (b) 7 d, (c) 15 d, and (d) 75 d. NS, *, **, ***: nonsignificant or significant at p < 0.05, 0.01, or 0.001, respectively.

 




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The SCI Journals Agronomy Journal Crop Science
Journal of Natural Resources
and Life Sciences Education		 Vadose Zone Journal
Soil Science Society of America Journal Journal of Plant Registrations The Plant Genome
Copyright © 2007 by the American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America.