[article]
| Titre : |
Effects of cutting or grazing grass swards on herbage yield, nitrogen uptake and residual soil nitrate at different levels of N fertilization |
| Type de document : |
texte imprimé |
| Auteurs : |
F. Nevens, Auteur ; D. Rehuel, Auteur |
| Année de publication : |
2003 |
| Article en page(s) : |
pp. 431-449 |
| Langues : |
Anglais (eng) |
| Catégories : |
[habitats/milieux] 3 - Landes, fruticées et prairies
[Thèmes] Pédologie (sol)
|
| Mots-clés : |
gestion pâturage fauchage |
| Résumé : |
"On a Flemish sandy loam soil, cut and grazed swards were compared at different levels of mineral nitrogen (N) fertilization. Economically optimal N fertilization rates were 400 (or more) and 200 kg N ha−1 yr−1 on cut and grazed swards respectively. Considering the amounts of residual soil nitrate-N in autumn, these N rates also met the current Flemish legal provisions, i.e. no more than 90 kg ha−1 nitrate-N present in the 0–90 cm soil layer, measured between 1 October and 15 November. The N use efficiency was considerably higher in cut grassland systems than in grazed systems, even when the animal component of a cut and conservation system was included. The results indicate that, for cut grasslands, two N application rates should be considered: intensively managed grasslands with high amounts of N (400 kg ha−1 yr−1 or more) or extensively managed grasslands with white clover and no more than 100 kg N ha−1 yr−1." (source : auteurs) |
| Type de publication : |
périodique |
| Référence biblio : |
Nevens F., Rehuel D., 2003 - Effects of cutting or grazing grass swards on herbage yield, nitrogen uptake and residual soil nitrate at different levels of N fertilization. Grass and forage science, 4 : 431-449. |
| ID PMB : |
58011 |
| Permalink : |
http://www.cbnbrest.fr/catalogue_en_ligne/index.php?lvl=notice_display&id=58011 |
in Grass and forage science > vol.58, n°4 (Décembre 2003) . - pp. 431-449
[article]
|
Effects of cutting or grazing grass swards on herbage yield, nitrogen uptake and residual soil nitrate at different levels of N fertilization in Grass and forage science, vol.58, n°4 (Décembre 2003)