A long-term experiment was conducted over 44 years on a sand soil, located at the experimental farm of the University of Padova (Italy), to study the effect of mineral fertilization and farmyard manure (FYM) on chemical features of soil organic matter (SOM) extracted from coarse (2000-250μm) and fine (53-250 μm) soil fractions. The experiment began in 1964 on open lysimeters of 80 cm deep. Fertilization treatments consisted of no application (untreated), farmyard manure (FYM) (40 t ha-1 yr-1), mineral NPK fertilizer (200 kg N ha-1 yr-1, 100 kg P2O5 ha-1 yr-1, 240 kg K2O ha-1 yr-1). The extracted SOM from each fraction was characterized by using elemental, isotopic (delta 13C), CP MAS 13C NMR and DRIFT analyses. Chemical and spectroscopic analyses showed that the SOM structure quali-quantitatively changed in relation to treatments. In particular, FYM led a considerable increase in carbonyl, aromatic and alkyl C in SOM of macro and microaggregates with respect to untreated and mineral fertilization. Anomeric C and N,O alkyl C seem to be positively affected by mineral fertilization but their distribution changed in both aggregates. The natural abundance of 13C stable isotope revealed fundamental information regarding the impacts of FYM on SOM.
LONG-TERM EFFECTS OF MANURE AND MINERAL FERTILIZATION ON SAND SOIL ORGANIC MATTER / Simonetti G.; Francioso O.; Nardi S.; Berti A.; Brugnoli E.; Morari F.. - STAMPA. - (2012), pp. 1657-1657. (Intervento presentato al convegno 4th International Congress of the European Soil Science Societies Eurosoil 2012: Soil Science for the Benefit of Mankind and Environment tenutosi a Bari ( Italy ) nel 2-6 July, 2012).
LONG-TERM EFFECTS OF MANURE AND MINERAL FERTILIZATION ON SAND SOIL ORGANIC MATTER
FRANCIOSO, ORNELLA;
2012
Abstract
A long-term experiment was conducted over 44 years on a sand soil, located at the experimental farm of the University of Padova (Italy), to study the effect of mineral fertilization and farmyard manure (FYM) on chemical features of soil organic matter (SOM) extracted from coarse (2000-250μm) and fine (53-250 μm) soil fractions. The experiment began in 1964 on open lysimeters of 80 cm deep. Fertilization treatments consisted of no application (untreated), farmyard manure (FYM) (40 t ha-1 yr-1), mineral NPK fertilizer (200 kg N ha-1 yr-1, 100 kg P2O5 ha-1 yr-1, 240 kg K2O ha-1 yr-1). The extracted SOM from each fraction was characterized by using elemental, isotopic (delta 13C), CP MAS 13C NMR and DRIFT analyses. Chemical and spectroscopic analyses showed that the SOM structure quali-quantitatively changed in relation to treatments. In particular, FYM led a considerable increase in carbonyl, aromatic and alkyl C in SOM of macro and microaggregates with respect to untreated and mineral fertilization. Anomeric C and N,O alkyl C seem to be positively affected by mineral fertilization but their distribution changed in both aggregates. The natural abundance of 13C stable isotope revealed fundamental information regarding the impacts of FYM on SOM.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
