IBAM   22618
INSTITUTO DE BIOLOGIA AGRICOLA DE MENDOZA
Unidad Ejecutora - UE
artículos
Título:
Influence of fertilization on the growth of radicchio "Rosso
Autor/es:
FILIPPINI, MARIA FLAVIA; NICOLLETTO, CARLO; SAMBO, PAOLO; CAVAGNARO JUAN BRUNO; PIMPINI, FERDINANDO
Revista:
REVISTA DE LA FACULTAD DE CIENCIAS AGRARIAS DE LA UNIVERSIDAD NACIONAL DE CUYO
Editorial:
UNIV NACIONAL CUYO
Referencias:
Lugar: Mendoza; Año: 2011 vol. 43 p. 111 - 131
ISSN:
0370-4661
Resumen:
ABSTRACT
This study evaluated the influence
of fertilization on some growth indexes in
radicchio "Rosso di Chioggia". The trial was
conducted in Rovigo (Italy) for two years and in
Mendoza (Argentina) for one year. Increasing
doses of macronutrients were considered,
identified as N0P0K0, N1P1K1, N2P2K2
and, only in Rovigo, N3P2K2. Some indexes
related to growth analysis: relative growth rate
(RGR), net assimilation rate (NAR), leaf area
ratio (LAR), specific leaf area (SLA), leaf weigh
ratio (LWR), crop growth ratio (CGR), leaf
area index (LAI) and leaf area duration (LAD)
were calculated during the growing cycle. At
Mendoza CGR was strongly influenced by
NAR from transplant until 776 growth degree
days (GDD). After that moment, CGR was
affected by LAI that increased markedly due
to favourable environmental conditions. From
1052 to 1653 GDD the high increase of LAI
determined a reduction in photosynthetic
efficiency. At Rovigo the trends in index values
showed differences between the two years
considered, especially in LAR and SLA. In the
second year CGR had always higher values;
mainly due to higher LAI values, since NAR did
not differ significantly during the years. In the
second half of the growing cycle, CGR was
instead strongly linked to a contraction of
photosynthetic effectiveness, due to head
formation. High LAI values showed a growing
cycle extension to the detriment of early head
formation. It was also observed that when
LWR is around 0.35 - 0.40 g g-1, the plant
reaches marketable maturation and is ready
to be harvested. In both environments, no
clear effects of fertilization were observed
on the growth indexes. In any case highly
fertilized plants showed higher growing
activity especially at the beginning of the
growing cycle.
instead strongly linked to a contraction of
photosynthetic effectiveness, due to head
formation. High LAI values showed a growing
cycle extension to the detriment of early head
formation. It was also observed that when
LWR is around 0.35 - 0.40 g g-1, the plant
reaches marketable maturation and is ready
to be harvested. In both environments, no
clear effects of fertilization were observed
on the growth indexes. In any case highly
fertilized plants showed higher growing
activity especially at the beginning of the
growing cycle.
reaches marketable maturation and is ready
to be harvested. In both environments, no
clear effects of fertilization were observed
on the growth indexes. In any case highly
fertilized plants showed higher growing
activity especially at the beginning of the
growing cycle.