Morphogenetic and tillering dynamics in Tanzania grass fertilized and non-fertilized with nitrogen according to season

dc.contributorUniversidade Estadual Paulista (UNESP)
dc.creatorRoma, Cláudio Fabrício da Cruz
dc.creatorCecato, Ulysses
dc.creatorSoares Filho, Cecilio Viega
dc.creatorSantos, Geraldo Tadeu dos
dc.creatorRibeiro, Ossival Lolato
dc.creatorIwamoto, Bruno Shigueo
dc.date2014-05-20T15:18:22Z
dc.date2016-10-25T17:52:10Z
dc.date2014-05-20T15:18:22Z
dc.date2016-10-25T17:52:10Z
dc.date2012-03-01
dc.date.accessioned2017-04-05T23:19:49Z
dc.date.available2017-04-05T23:19:49Z
dc.identifierRevista Brasileira de Zootecnia. Sociedade Brasileira de Zootecnia, v. 41, n. 3, p. 565-573, 2012.
dc.identifier1516-3598
dc.identifierhttp://hdl.handle.net/11449/30865
dc.identifierhttp://acervodigital.unesp.br/handle/11449/30865
dc.identifier10.1590/S1516-35982012000300013
dc.identifierS1516-35982012000300013
dc.identifierWOS:000303451600013
dc.identifierS1516-35982012000300013.pdf
dc.identifierhttp://dx.doi.org/10.1590/S1516-35982012000300013
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/875529
dc.descriptionThe objectives of this study were to evaluate morphogenetic characteristics and tillering dynamics in Tanzania grass fertilized and non-fertilized with nitrogen, under intermittent grazing, in the spring and the summer. The main plots were composed of four nitrogen rates (0, 100, 200 and 300 kg/ha) and the subplots were growth seasons: spring (October, November and December) and summer (January, February and March). The experimental design was of randomized block with plots subdivided by time (seasons of the year) and four replications. Urea was used as nitrogen supply and was divided into two applications: one in the spring and another in the summer. The experimental units fertilized with N rates of 200 and 300 kg/ha showed six cycles of pasture, with an average of 27 days of pasture interval, while the treatments with no fertilization and 100 kg/ha of N showed only four and five cycles of pasture, respectively. Leaf elongation rate (LER) and the leaf appearance rate (LAR) increased linearly with increasing of N rates. The greatest population density occurred in summer with the higher nitrogen rates. The treatment without N fertilization showed the lowest growth of tiller population, while the other treatments exhibited growth rates above 50% when compared with non-fertilized samples. Nitrogen rates significantly affect the leaf appearance rate and the leaf elongation rate, as well as the number of live leaves in plants of Tanzania grass in both spring and summer.
dc.languageeng
dc.publisherSociedade Brasileira de Zootecnia
dc.relationRevista Brasileira de Zootecnia
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectintermittent grazing
dc.subjectleaf appearance rate
dc.subjectleaf elongation rate
dc.subjectPanicum maximum
dc.subjectsenescence rate
dc.titleMorphogenetic and tillering dynamics in Tanzania grass fertilized and non-fertilized with nitrogen according to season
dc.typeOtro


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