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Accumulation and redistribution of dry matter and nitrogen by spring barley

Bulman, P ; Smith, D.L

Agronomy journal, 1993-11, Vol.85 (6), p.1114-1121 [Peer Reviewed Journal]

Madison, WI: American Society of Agronomy

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Title:
Accumulation and redistribution of dry matter and nitrogen by spring barley
Author: Bulman, P ; Smith, D.L
Subjects: ABONOS NITROGENADOS ; ABSORCION DE SUSTANCIAS NUTRITIVAS ; ABSORPTION DE SUBSTANCES NUTRITIVES ; Absorption. Translocation of ions and substances. Permeability ; Agronomy. Soil science and plant productions ; Biological and medical sciences ; CANADA ; CONTENIDO DE MATERIA SECA ; CONTENIDO DE NITROGENO ; CONTENIDO PROTEICO ; DATE DE TRAITEMENT ; DOSE D'APPLICATION ; DOSIS DE APLICACION ; Economic plant physiology ; ENGRAIS AZOTE ; ETAPAS DE DESARROLLO DE LA PLANTA ; FECHA DE TRATAMIENTO ; FOURRAGE GRAIN ; Fundamental and applied biological sciences. Psychology ; GRANOS PIENSO ; HORDEUM VULGARE ; METHODE D'APPLICATION ; METODOS DE APLICACION ; Nutrition. Photosynthesis. Respiration. Metabolism ; PLANTAS FORRAJERAS ; PLANTE FOURRAGERE ; PRIMAVERA ; PRINTEMPS ; RENDEMENT DES CULTURES ; RENDIMIENTO DE CULTIVOS ; SOL ARGILEUX ; STADE DE DEVELOPPEMENT VEGETAL ; SUELO ARCILLOSO ; TENEUR EN AZOTE ; TENEUR EN MATIERE SECHE ; TENEUR EN PROTEINES ; VARIEDADES ; VARIETE
Is Part Of: Agronomy journal, 1993-11, Vol.85 (6), p.1114-1121
Notes: F61
Q54
F04
9444356
Description: The grain protein content of barley (Hordeum vulgare L.) is derived from the retranslocation of vegetative N, as well as from the continued uptake and assimilation of N during grain filling. Field trials were conducted at the E.A. Lods Agronomy Research Centre of McGill University on a Bearbrook soil (fine, mixed, nonacid, frigid Humaquept) to study the effects of fertilizer N on grain and total plant N accumulation, vegetative N retranslocation, and post-heading N uptake, and also to evaluate the importance of pre- and post-anthesis N uptake in determining grain protein concentration (GPC). 'Cadette' and 'Leger', which are adapted feed types, and 'Argyle', an unadapted malting type, were grown with N rates of 0, 50, 100, 150 and 200 kg N ha-1 broadcast at seeding as NH4NO3. Two other treatments consisted of applying 100 kg N ha-1 at seeding and 50 kg N ha-1 as NH4NO3 (broadcast) or urea (foliar solution) 6 to 10 d after awn emergence. Retranslocation of vegetative N to the grain generally decreased with increased N application in 1988 and 1989, but not in 1990, when it increased. The proportion of vegetative N retranslocated to the grain decreased with increasing rates of fertilizer N in all years. Post-heading N uptake and assimilation increased with fertilizer N, and appeared to be the major contributor of N to the grain. Cultivar differences in GPC were not related to differences in total N uptake, grain N, N harvest index, and apparent post-heading N uptake or N retranslocation
Publisher: Madison, WI: American Society of Agronomy
Language: English

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Accumulation and redistribution of dry matter and nitrogen by spring barley

Bulman, P ; Smith, D.L

Madison, WI: American Society of Agronomy

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