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dc.contributor.author
Zubillaga de Sanahuja, María de Las Mercedes
dc.contributor.author
Aristi, J. P.
dc.contributor.author
Lavado, Raul Silvio
dc.date.available
2018-09-10T21:34:31Z
dc.date.issued
2002-08
dc.identifier.citation
Zubillaga de Sanahuja, María de Las Mercedes; Aristi, J. P.; Lavado, Raul Silvio; Effect of phosphorus and nitrogen fertilization on sunflower (Helianthus annus L.) nitrogen uptake and yield; Wiley Blackwell Publishing, Inc; Journal of Agronomy and Crop Science; 188; 4; 8-2002; 267-274
dc.identifier.issn
0931-2250
dc.identifier.uri
http://hdl.handle.net/11336/59015
dc.description.abstract
Little is known about the effect of combined phosphorus and nitrogen (P-N) fertilization on the N requirement of sunflower (Helianthus annus L.). This study was carried out to evaluate the effects of varying levels of P and N, as well as the interaction P x N, on the N uptake, yield and N apparent utilization efficiency under field conditions. Split-plot design experiments were conducted in the mid-western Pampas in Argentina. Four levels of N (0, 46, 92 and 138 kg N ha-1) and three levels of P (0, 12 and 40 kg P ha-1) were applied to two Typic Hapludolls over two growing seasons (1997-98 and 1998-99). N uptake and soil N-NO3 contents were determined at the V7, R5 and R9 growth stages. The sunflower yield ranged from 2.5 to 5.0 Mg ha-1. The total N requirement was around 45 kg N Mg-1 grain, and this result suggests that it is not necessary to use different N requirements (parameter b) for fertilized crops when a yield response is expected. To achieve a 100 % yield maximum a N supply (soil plus fertilizer) of 181 kg N ha-1 at P40 was needed. However, at P0, the highest yield was about 80 % of the maximum yield with a N supply (soil plus fertilizer) of 164 kg N ha-1. P application increased the apparent use efficiency of the supplied N.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Wiley Blackwell Publishing, Inc
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Grain Yield
dc.subject
N Uptake
dc.subject
P-N Fertilization
dc.subject
Soil Nitrates
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Sunflower
dc.subject.classification
Agricultura
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Agricultura, Silvicultura y Pesca
dc.subject.classification
CIENCIAS AGRÍCOLAS
dc.title
Effect of phosphorus and nitrogen fertilization on sunflower (Helianthus annus L.) nitrogen uptake and yield
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-08-30T16:23:02Z
dc.journal.volume
188
dc.journal.number
4
dc.journal.pagination
267-274
dc.journal.pais
Reino Unido
dc.journal.ciudad
Londres
dc.description.fil
Fil: Zubillaga de Sanahuja, María de Las Mercedes. Universidad de Buenos Aires. Facultad de Agronomía; Argentina
dc.description.fil
Fil: Aristi, J. P.. Universidad de Buenos Aires. Facultad de Agronomía; Argentina
dc.description.fil
Fil: Lavado, Raul Silvio. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones en Biociencias Agrícolas y Ambientales. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones en Biociencias Agrícolas y Ambientales; Argentina
dc.journal.title
Journal of Agronomy and Crop Science
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/abs/10.1046/j.1439-037X.2002.00570.x
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1046/j.1439-037X.2002.00570.x
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