Optimum harvest time for Kikuyu grass ( Cenchrus clandestinus ) according to the number of leaves per tiller and nitrogen fertilization

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dc.creatorAmanda Acero-Camelo
dc.creatorMartha L. Pabón
dc.creatorGerhard Fischer
dc.creatorJuan Evangelista Carulla-Fornaguera
dc.date2020
dc.date.accessioned2026-07-07T03:29:37Z
dc.descriptionTo determine the optimum harvest time of kikuyu grass (Cenchrus clandestinus (Hochst. ex Chiov.) Morrone), according to the number of leaves per tiller and nitrogen fertilization level, an experiment was carried out under greenhouse conditions using a 4×4 factorial design. The factors were the number of leaves per tiller (3, 4, 5, 6 leaves) and level of nitrogen (N) fertilization (0, 50, 100,150 kg of Nitrogen ha-1 year-1). Dry matter (DM) yield and nutritional quality were determined. Additionally, the independent effect of nitrogen fertilization on undisturbed height, tiller density, and the phyllochron were evaluated. When the number of leaves per tiller increased (3 to 6), the leaf yield and dead forage also increased (P<0.05). The leaf-stem ratio (L:S) remained constant (P>0.05) among the number of leaves. Green forage-dead forage ratio (GF:DF) decreased (P<0.05) with a higher number of leaves per tiller. The concentration of crude protein (CP) decreased while the concentration of neutral detergent fiber (NDF) increased with an increment of the number of leaves per tiller (P<0.05). Nitrogen fertilization increased the undisturbed height, the density of tillers, DM yield from leaves, stems and green forage, GF:DF, and CP (P<0.05) while NDF decreased (P<0.05). The phyllochron was higher without N fertilization. The effects of the number of leaves per tiller and N fertilization on the most variables measured were independent of each other. However, due to an increment in DM yield caused by N fertilization, the pasture can be defoliated with fewer leaves per tiller, increasing defoliation frequency and improving forage quality.
dc.formatapplication/pdf
dc.identifier0304-2847
dc.identifierhttps://www.redalyc.org/articulo.oa?id=179964927002
dc.identifierhttps://www.redalyc.org/journal/1799/179964927002/
dc.identifierhttps://www.redalyc.org/journal/1799/179964927002/html/
dc.identifierhttps://www.redalyc.org/journal/1799/179964927002/179964927002.epub
dc.identifierhttps://www.redalyc.org/journal/1799/179964927002/movil
dc.identifier10.15446/rfnam.v73n3.82257
dc.identifier.urihttp://hdl.handle.net/123456789/435262
dc.languageen
dc.publisherUniversidad Nacional de Colombia
dc.relationhttp://www.redalyc.org/revista.oa?id=1799
dc.rightsRevista Facultad Nacional de Agronomía - Medellín
dc.sourceRevista Facultad Nacional de Agronomía - Medellín (Colombia) Num.3 Vol.73
dc.subjectAgrociencias
dc.titleOptimum harvest time for Kikuyu grass ( Cenchrus clandestinus ) according to the number of leaves per tiller and nitrogen fertilization
dc.typeartículo científico

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Revista Facultad Nacional de Agronomía - Universidad Nacional de Colombia