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Condensed tannin accumulation and nitrogen fixation potential of Onobrychis viciifolia Scop. grown in a Mediterranean environment

Re, Giovanni Antonio and Piluzza, Giovanna Antonia Maria and Sulas, Leonardo and Franca, Antonello and Porqueddu, Claudio and Sanna, Federico and Bullitta, Simonetta Maria (2014) Condensed tannin accumulation and nitrogen fixation potential of Onobrychis viciifolia Scop. grown in a Mediterranean environment. Journal of the Science of Food and Agriculture, Vol. 94 (4), p. 639-645. ISSN 0022-5142. eISSN 1097-0010. Article.

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DOI: 10.1002/jsfa.6463


BACKGROUND: Sainfoin (Onobrychis viciifolia Scop.) is a forage legume found in temperate areas but is less widespread in Mediterranean environments. Compared with other perennial legumes, it has the advantage of containing condensed tannins (CT) that can be important for their implications on ruminant nutrition and health. Data on nitrogen (N) fixation by sainfoin in the literature originate from very different environments and only a few field data are available, so it is important to improve knowledge on the N fixation potential of this species, particularly under a Mediterranean climate. Here the accumulation pattern of polyphenolic compounds (total, non-tannic polyphenols and CT) and theNfixation potential of sainfoin were studied in order to contribute to its valorisation for sustainable farmingmanagement inMediterranean environments.
RESULTS: CT concentrations were always in the range considered beneficial for animals, not exceeding 50 g delphinidin equivalent kg−1 drymatter (DM). The regression of aerial fixed N on aerial DM showed a relationship of 22 kg fixed N t−1 aerial DM in aMediterranean environment.
CONCLUSION: A wider exploitation of sainfoin is suggested for production under rain-fed conditions, thus enlarging the limited set of available perennial legumes suitable for Mediterranean environments.

Item Type:Article
ID Code:9972
Uncontrolled Keywords:Atmospheric nitrogen, fixed nitrogen, phenological phases, polyphenols, sainfoin
Subjects:Area 07 - Scienze agrarie e veterinarie > AGR/02 Agronomia e coltivazioni erbacee
Divisions:002 Altri enti e centri di ricerca del Nord Sardegna > CNR-Consiglio Nazionale delle Ricerche > Istituto per il sistema produzione animale in ambiente Mediterraneo, Sassari
Copyright Holders:© 2013 Society of Chemical Industry
Deposited On:15 Jul 2014 12:17

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