The effects of applying sewage sludge (SS) to agricultural soil (at low rate of 22.5, LRS, and at high rate of 45 t ha−1 dry basis, HRS) were monitored over a 120-d experimental period. Total organic carbon (TOC), water- soluble organic carbon (WSOC), alkali-soluble phenols, basal respiration, 10 specific enzyme activity, dehydrogenase activity (DH-ase), metabolic potential (MP) and FDA-hydrolytic activity (FDA) were strongly increased by both rates of SS applications. In the SS amended soil, about 70% of the organic C added with the material remained at the end of the experiment. Basal respiration increased with increasing SS doses. The 15 specific enzyme activity and the MP indicate an increase in the enzyme activity in soil. AQ10 The addition of SS led to higher values than the control of all the tested parameters up to the end of the experimental period. The anti- oxidant capacity (trolox equivalent antioxidant capacity, TEAC) was influ- 20 enced by SS addition only when applied at HRS. After 120 days only HRS value of TEAC (5.13 mM g−1) was higher than control (4.09 mM g−1). The pattern of TEAC did not enable any link to be established between antioxidant capacity and both alkali-soluble phenols and basal respira- tion in soil.

Changes in biological properties and antioxidant capacity of an agricultural soil amended with sewage sludge

CARDELLI, ROBERTO
Primo
;
ARDUINI, IDUNA;MARCHINI, FAUSTO;MASONI, ALESSANDRO;SAVIOZZI, ALESSANDRO
2017-01-01

Abstract

The effects of applying sewage sludge (SS) to agricultural soil (at low rate of 22.5, LRS, and at high rate of 45 t ha−1 dry basis, HRS) were monitored over a 120-d experimental period. Total organic carbon (TOC), water- soluble organic carbon (WSOC), alkali-soluble phenols, basal respiration, 10 specific enzyme activity, dehydrogenase activity (DH-ase), metabolic potential (MP) and FDA-hydrolytic activity (FDA) were strongly increased by both rates of SS applications. In the SS amended soil, about 70% of the organic C added with the material remained at the end of the experiment. Basal respiration increased with increasing SS doses. The 15 specific enzyme activity and the MP indicate an increase in the enzyme activity in soil. AQ10 The addition of SS led to higher values than the control of all the tested parameters up to the end of the experimental period. The anti- oxidant capacity (trolox equivalent antioxidant capacity, TEAC) was influ- 20 enced by SS addition only when applied at HRS. After 120 days only HRS value of TEAC (5.13 mM g−1) was higher than control (4.09 mM g−1). The pattern of TEAC did not enable any link to be established between antioxidant capacity and both alkali-soluble phenols and basal respira- tion in soil.
Cardelli, Roberto; Arduini, Iduna; Marchini, Fausto; Masoni, Alessandro; Saviozzi, Alessandro
File in questo prodotto:
File Dimensione Formato  
Cardelli_865914.pdf

solo utenti autorizzati

Tipologia: Versione finale editoriale
Licenza: NON PUBBLICO - Accesso privato/ristretto
Dimensione 1.39 MB
Formato Adobe PDF
1.39 MB Adobe PDF   Visualizza/Apri   Richiedi una copia
Archives 2017 post-print.pdf

accesso aperto

Descrizione: Versione revisionata completa
Tipologia: Documento in Post-print
Licenza: Tutti i diritti riservati (All rights reserved)
Dimensione 686.78 kB
Formato Adobe PDF
686.78 kB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11568/865914
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 2
  • ???jsp.display-item.citation.isi??? 2
social impact