Abstract

Salicylic acid (SA) and its synthetic functional analogue acibenzolarS-methyl (BTH) are able to activate in plants the systemic acquired resistance (SAR) which is an effective natural defence against many parasites and pathogens. In this study, the quantitative aspects of the interaction between SA and BTH and four humic acids isolated from soil (S-HA), peat (P-HA), compost (C-HA) and a mixture of peat and compost (M-HA) were evaluated by constructing the adsorption kinetics and isotherms. The adsorption of SA and BTH at concentrations of 0.05 and 0.01 mM, respectively, onto S-HA resulted rapid and complete in few hours. SA adsorption onto S-HA, P-HA and M-HA followed a linear model with adsorption constants ranging between 150 e 200 ml g -1, whereas onto C-HA it followed the Freundlich model with a K f value of 44 ml g-1. BTH adsorption onto all HA followed the Freundlich model with Kf values ranging between 559 ml g -1for M-HA and 6460 ml g-1 for P-HA.

Autore Pugliese

• Molinari Sergio

Tutti gli autori

• Traversa A.; Molinari S.; Loffredo E.

Titolo volume/Rivista

Agrochimica

Anno di pubblicazione

2012

ISSN

0002-1857

ISBN

Non Disponibile

Numero di citazioni Wos

Nessuna citazione

Ultimo Aggiornamento Citazioni

Non Disponibile

Numero di citazioni Scopus

Non Disponibile

Ultimo Aggiornamento Citazioni

Non Disponibile

Settori ERC

Non Disponibile

Codici ASJC

Non Disponibile