A 15N-labelled fertilization trial was carried out on sweet sorghum, grown in semi-arid environments of southern Europe with the aim to monitor the efficiency and effectiveness of the N-fertilisation technique under irrigation and different nitrogen fertilization rates, in factorial combination. A rainfed condition was compared with a full irrigation treatment (100% restoration of total crop water consumption), in a similar way, an unfertilized control was tested with respect to N application rates of 60 and 120 Kg ha-1, respectively. The fertilisation efficiency measured directly through the isotope discrimination technique was on average equal to 15%. The aliquot of nitrogen released by the fertiliser into the soil and not absorbed by the plant becomes part of the different components of the soil nitrogen balance, regardless of its origin.

15N-labelled fertilizer recovery by sweet sorghum in Mediterranean climate

LOVELLI, Stella;POSCA, Gerardina;PERNIOLA, Michele
2008

Abstract

A 15N-labelled fertilization trial was carried out on sweet sorghum, grown in semi-arid environments of southern Europe with the aim to monitor the efficiency and effectiveness of the N-fertilisation technique under irrigation and different nitrogen fertilization rates, in factorial combination. A rainfed condition was compared with a full irrigation treatment (100% restoration of total crop water consumption), in a similar way, an unfertilized control was tested with respect to N application rates of 60 and 120 Kg ha-1, respectively. The fertilisation efficiency measured directly through the isotope discrimination technique was on average equal to 15%. The aliquot of nitrogen released by the fertiliser into the soil and not absorbed by the plant becomes part of the different components of the soil nitrogen balance, regardless of its origin.
File in questo prodotto:
Non ci sono file associati a questo prodotto.

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: http://hdl.handle.net/11563/5456
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 0
  • ???jsp.display-item.citation.isi??? ND
social impact