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dc.creatorRamírez, Javier
dc.creatorHoyos, Verónica
dc.creatorPlaza, Guido
dc.date.accessioned2019-07-03T01:17:35Z
dc.date.available2019-07-03T01:17:35Z
dc.date.created2017-01-01
dc.identifierISSN: 2248-7026
dc.identifier.urihttps://repositorio.unal.edu.co/handle/unal/65994
dc.descriptionStudies on weed population dynamics are based on observing and recording changes in weed communities in response to effects of disturbances in crop management. The present study aimed to evaluate weed population dynamics in rice crops in Tolima, Colombia, resulting from post-emergent herbicide applications. Sampling was carried out in 0.1% of the cultivated area, marking out a 1 ha area in each commercial lot. Samples were taken before and after post-emergent applications. Evaluated variables were frequency, density, and cover. The data were analyzed using the Importance Value Index (IVI). Results demonstrated that Echinochloa colona was the most important weed of all of the evaluated zones, before and after post-emergent herbicide applications. Other notable species included Digitaria ciliaris, Cyperus iria and Ischaemum rugosum. Relative frequency variable was the most influential on the importance index of the species. Furthermore, herbicide applications generated changes in the community structure in the evaluated zones and in each evaluation.
dc.formatapplication/pdf
dc.publisherUniversidad Nacional de Colombia - Sede Medellín - Facultad de Ciencias Agrarias
dc.relationhttps://revistas.unal.edu.co/index.php/refame/article/view/61762
dc.relation.ispartofUniversidad Nacional de Colombia Revistas electrónicas UN Revista Facultad Nacional de Agronomía Medellín
dc.relation.ispartofRevista Facultad Nacional de Agronomía Medellín
dc.subjectWeed control
dc.subjectEchinochloa colona
dc.subjectCommunity structure
dc.subjectImportance Value Index (IVI)
dc.subject.ddc63 Agricultura y tecnologías relacionadas / Agriculture
dc.titleWeed population dynamics in rice crops resulting from post-emergent herbicide applications
dc.typeinfo:eu-repo/semantics/article
dc.type.spaArtículo - Article
dc.type.hasversioninfo:eu-repo/semantics/publishedVersion
dc.rights.accessRightsinfo:eu-repo/semantics/openAccess
dc.identifier.bibliographicCitationRamírez, Javier and Hoyos, Verónica and Plaza, Guido (2017) Weed population dynamics in rice crops resulting from post-emergent herbicide applications. Revista Facultad Nacional de Agronomía Medellín, 70 (1). pp. 8035-8043. ISSN 2248-7026
dc.identifier.eprintshttp://bdigital.unal.edu.co/67017/


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