Leaf area index of potato crop under three nitrogen fertilization treatments

Nitrogen fertilization has considerable effects on growth and yield of the potato crop. Additionally, leaf expansion is one of the most important growth parameters that can be used to optimize the management of agroecological resources. We evaluated the effect of nitrogen fertilization on the leaf a...

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Autores:
Villa, Pedro Manuel
Tipo de recurso:
Article of journal
Fecha de publicación:
2017
Institución:
Universidad Nacional de Colombia
Repositorio:
Universidad Nacional de Colombia
Idioma:
spa
OAI Identifier:
oai:repositorio.unal.edu.co:unal/68191
Acceso en línea:
https://repositorio.unal.edu.co/handle/unal/68191
http://bdigital.unal.edu.co/69224/
Palabra clave:
63 Agricultura y tecnologías relacionadas / Agriculture
Leaf area index
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openAccess
License
Atribución-NoComercial 4.0 Internacional
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spelling Atribución-NoComercial 4.0 InternacionalDerechos reservados - Universidad Nacional de Colombiahttp://creativecommons.org/licenses/by-nc/4.0/info:eu-repo/semantics/openAccesshttp://purl.org/coar/access_right/c_abf2Villa, Pedro Manuel66480c07-7ea8-4ce6-9938-3de775315ae43002019-07-03T06:06:07Z2019-07-03T06:06:07Z2017-05-01ISSN: 2357-3732https://repositorio.unal.edu.co/handle/unal/68191http://bdigital.unal.edu.co/69224/Nitrogen fertilization has considerable effects on growth and yield of the potato crop. Additionally, leaf expansion is one of the most important growth parameters that can be used to optimize the management of agroecological resources. We evaluated the effect of nitrogen fertilization on the leaf area index (LAI) of the potato crop during different phenological stages by two different methods. Experimental plots were stablished in a randomized block design with three replicates per fertilization treatment: no nitrogen supply (0-N), 133 Kg N ha-1 (133-N), and 400 Kg N ha-1 (400-N), using the Granola variety, at the Andes region, Mérida city, Venezuela. We measured leaf area at the main phenological stages of the crop using a plant canopy analyzer. LAI showed significant differences among treatments and phenological stages, except during the emergence stage. The maximum LAI values were obtained ca. 55 days after emergence: 400-N (1.42 ± 0.16) 133-N (0.92 ± 0.21) 0-N (0.34 ± 0.08). We showed that nitrogen fertilization had a significant effect on the development of LAI in the potato crop along its different phenological stages.application/pdfspaUniversidad Nacional de Colombia - Sede Bogotá - Facultad de Ciencias Agrariashttps://revistas.unal.edu.co/index.php/agrocol/article/view/62110Universidad Nacional de Colombia Revistas electrónicas UN Agronomía ColombianaAgronomía ColombianaVilla, Pedro Manuel (2017) Leaf area index of potato crop under three nitrogen fertilization treatments. Agronomía Colombiana, 35 (2). pp. 171-175. ISSN 2357-373263 Agricultura y tecnologías relacionadas / AgricultureLeaf area indexLeaf area index of potato crop under three nitrogen fertilization treatmentsArtículo de revistainfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501http://purl.org/coar/resource_type/c_2df8fbb1http://purl.org/coar/version/c_970fb48d4fbd8a85Texthttp://purl.org/redcol/resource_type/ARTORIGINAL62110-364670-1-PB.pdfapplication/pdf168005https://repositorio.unal.edu.co/bitstream/unal/68191/1/62110-364670-1-PB.pdf0800c6b0098144fe6a6916c65f5fc20aMD51THUMBNAIL62110-364670-1-PB.pdf.jpg62110-364670-1-PB.pdf.jpgGenerated Thumbnailimage/jpeg8776https://repositorio.unal.edu.co/bitstream/unal/68191/2/62110-364670-1-PB.pdf.jpg9f8f98d3933d0e12fdd77a62469d1a06MD52unal/68191oai:repositorio.unal.edu.co:unal/681912024-05-25 23:09:24.095Repositorio Institucional Universidad Nacional de Colombiarepositorio_nal@unal.edu.co
dc.title.spa.fl_str_mv Leaf area index of potato crop under three nitrogen fertilization treatments
title Leaf area index of potato crop under three nitrogen fertilization treatments
spellingShingle Leaf area index of potato crop under three nitrogen fertilization treatments
63 Agricultura y tecnologías relacionadas / Agriculture
Leaf area index
title_short Leaf area index of potato crop under three nitrogen fertilization treatments
title_full Leaf area index of potato crop under three nitrogen fertilization treatments
title_fullStr Leaf area index of potato crop under three nitrogen fertilization treatments
title_full_unstemmed Leaf area index of potato crop under three nitrogen fertilization treatments
title_sort Leaf area index of potato crop under three nitrogen fertilization treatments
dc.creator.fl_str_mv Villa, Pedro Manuel
dc.contributor.author.spa.fl_str_mv Villa, Pedro Manuel
dc.subject.ddc.spa.fl_str_mv 63 Agricultura y tecnologías relacionadas / Agriculture
topic 63 Agricultura y tecnologías relacionadas / Agriculture
Leaf area index
dc.subject.proposal.spa.fl_str_mv Leaf area index
description Nitrogen fertilization has considerable effects on growth and yield of the potato crop. Additionally, leaf expansion is one of the most important growth parameters that can be used to optimize the management of agroecological resources. We evaluated the effect of nitrogen fertilization on the leaf area index (LAI) of the potato crop during different phenological stages by two different methods. Experimental plots were stablished in a randomized block design with three replicates per fertilization treatment: no nitrogen supply (0-N), 133 Kg N ha-1 (133-N), and 400 Kg N ha-1 (400-N), using the Granola variety, at the Andes region, Mérida city, Venezuela. We measured leaf area at the main phenological stages of the crop using a plant canopy analyzer. LAI showed significant differences among treatments and phenological stages, except during the emergence stage. The maximum LAI values were obtained ca. 55 days after emergence: 400-N (1.42 ± 0.16) 133-N (0.92 ± 0.21) 0-N (0.34 ± 0.08). We showed that nitrogen fertilization had a significant effect on the development of LAI in the potato crop along its different phenological stages.
publishDate 2017
dc.date.issued.spa.fl_str_mv 2017-05-01
dc.date.accessioned.spa.fl_str_mv 2019-07-03T06:06:07Z
dc.date.available.spa.fl_str_mv 2019-07-03T06:06:07Z
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dc.identifier.issn.spa.fl_str_mv ISSN: 2357-3732
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identifier_str_mv ISSN: 2357-3732
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dc.language.iso.spa.fl_str_mv spa
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dc.relation.spa.fl_str_mv https://revistas.unal.edu.co/index.php/agrocol/article/view/62110
dc.relation.ispartof.spa.fl_str_mv Universidad Nacional de Colombia Revistas electrónicas UN Agronomía Colombiana
Agronomía Colombiana
dc.relation.references.spa.fl_str_mv Villa, Pedro Manuel (2017) Leaf area index of potato crop under three nitrogen fertilization treatments. Agronomía Colombiana, 35 (2). pp. 171-175. ISSN 2357-3732
dc.rights.spa.fl_str_mv Derechos reservados - Universidad Nacional de Colombia
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dc.rights.license.spa.fl_str_mv Atribución-NoComercial 4.0 Internacional
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dc.rights.accessrights.spa.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv Atribución-NoComercial 4.0 Internacional
Derechos reservados - Universidad Nacional de Colombia
http://creativecommons.org/licenses/by-nc/4.0/
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.format.mimetype.spa.fl_str_mv application/pdf
dc.publisher.spa.fl_str_mv Universidad Nacional de Colombia - Sede Bogotá - Facultad de Ciencias Agrarias
institution Universidad Nacional de Colombia
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