Efecto del estado de madurez de la planta sobre la composición de la fracción nitrogenada de la alfalfa aragón (Medicago sativa L.)
- Treviño, Jesús 1
- Hernández, María T. 1
- 1 Instituto de Alimentación y Productividad Animal. C.S.I.C. Madrid-3
ISSN: 0210-1270
Année de publication: 1978
Volumen: 8
Número: 1
Pages: 133-139
Type: Article
D'autres publications dans: Pastos: Revista de la Sociedad Española para el Estudio de los Pastos
Résumé
Aragón lucerne was harvested at five stages of increasing maturity during three consecutive years. Samples were analyzed for contents of total N, non protein N, 80 % ethanol extractable N, peptide N, nitrates and individual amino acids. The concentrations of the different nitrogen fractions and individual amino acids in the dry matter decreased as forage age advanced. However, there was little change ir the concentrations of non protein N an individual amino acids when the data were expressed as percentage of total N and g amino acid/16 g N, respectively. Lucerne accumulated nitrate in relatively high amounts at early stages of growth.