Nanoengineered Sorbents To Increase the Persistence of the Allelochemical Carvone in the Rhizosphere.
J Agric Food Chem
; 67(2): 589-596, 2019 Jan 16.
Article
en En
| MEDLINE
| ID: mdl-30562019
ABSTRACT
This study investigates the changes in sorption/desorption, dissipation, and leaching of the two enantiomeric forms of the allelochemical carvone, R-carvone and S-carvone, after amending an agricultural soil sample with two nanoengineered sorbents biochar (BC) and organoclay (OCl). The sorption of carvone enantiomers was nonenantioselective and similarly improved by the addition of OCl and BC to the soil. However, OCl-amended soil showed reversible sorption, whereas BC-amended soil displayed sorption-desorption hysteresis. Dissipation of carvone enantiomers was enantioselective. Both amendments increased the half-life of the enantiomers in the soil. This effect was more pronounced for BC-amended soil and for S-carvone. Leaching of R- and S-carvone through soil columns was scarce in unamended soil (<7%), due to their rapid degradation during leaching, and null for OCl- and BC-amended soil, for which much of the applied R- and S-carvone remained in the top 0-5 cm of the amended soil layer. Addition of biochars and organoclays could help increase the persistence of carvone enantiomers in the rhizosphere, which may favor their use as residual pest-management substances.
Palabras clave
Texto completo:
1
Bases de datos:
MEDLINE
Asunto principal:
Feromonas
/
Contaminantes del Suelo
/
Monoterpenos
Idioma:
En
Revista:
J Agric Food Chem
Año:
2019
Tipo del documento:
Article
País de afiliación:
España