Interference of seeding and regrowth of signalgrass weed (Urochloa decumbens) during the initial development of Eucalyptus urograndis (E. grandis × E. urophylla)

dc.contributor.authorBacha, Allan Lopes [UNESP]
dc.contributor.authorPereira, Fernanda Campos Mastrotti [UNESP]
dc.contributor.authorPires, Rodrigo Neto
dc.contributor.authorNepomuceno, Mariluce Pascoina [UNESP]
dc.contributor.authorAlves, Pedro Luís da Costa Aguiar [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionThe University of Western Australia
dc.date.accessioned2018-12-11T17:28:17Z
dc.date.available2018-12-11T17:28:17Z
dc.date.issued2016-03-01
dc.description.abstractYoung eucalyptus seedlings in general are sensitive to stress factors during early development and establishment. Weed competition is one of the major biotic effects contributing to reductions on the initial growth of eucalyptus plants. This study aimed to evaluate the effects of different densities and distances of Urochloa decumbens seeded and regrowth during the early growth of Eucalyptus urograndis. Two experiments were conducted in an open and semi-controlled area, in a completely randomized design, in factorial arrangement 4 × 2 + 1, being respectively, four densities of weed plants (2.6, 5.2, 7.8 and 10.4 plants m-2), two distances between Eucalyptus and weeds (5 and 15 cm), and a weed-free control. The height and diameter of eucalyptus were evaluated 15 days intervals, and at the end of 90 days after eucalyptus planting (DAP) the leaf area and dry mass were measured. For a density of U. decumbens plants that were seeded at a density of 2.6 plants m-2, 90 days after Eucalyptus planting (DAP), there was a decrease in the height (20%), stem diameter (10%), leaf area (55%) and dry mass (48%). For the regrowth of U. decumbens at a density of 2.6 plants m-2 at 90 DAP, the height (47%), stem diameter (55%), leaf area (89%) and dry mass (87%) decreased. The results demonstrate that U. decumbens adversely affected the growth of eucalyptus, without statistical differences between distances, and weeds in regrowth affecting Eucalyptus growth more than seeded weeds.en
dc.description.affiliationFaculdade de Ciências Agrárias e Veterinárias UNESP (Sao Paulo State University)
dc.description.affiliationSchool of Plant Biology Faculty of Science The University of Western Australia, 35 Stirling Highway
dc.description.affiliationUnespFaculdade de Ciências Agrárias e Veterinárias UNESP (Sao Paulo State University)
dc.format.extent322-330
dc.identifierhttp://dx.doi.org/10.21475/ajcs.2016.10.03.p6995
dc.identifier.citationAustralian Journal of Crop Science, v. 10, n. 3, p. 322-330, 2016.
dc.identifier.doi10.21475/ajcs.2016.10.03.p6995
dc.identifier.issn1835-2707
dc.identifier.issn1835-2693
dc.identifier.lattes0103383524288212
dc.identifier.orcid0000-0003-2348-2121
dc.identifier.scopus2-s2.0-84969151019
dc.identifier.urihttp://hdl.handle.net/11449/178028
dc.language.isoeng
dc.relation.ispartofAustralian Journal of Crop Science
dc.relation.ispartofsjr0,354
dc.relation.ispartofsjr0,354
dc.rights.accessRightsAcesso restrito
dc.sourceScopus
dc.subjectBiotic stress
dc.subjectBrachiaria decumbens
dc.subjectCompetition
dc.subjectForestry
dc.subjectWeed management
dc.titleInterference of seeding and regrowth of signalgrass weed (Urochloa decumbens) during the initial development of Eucalyptus urograndis (E. grandis × E. urophylla)en
dc.typeArtigo
unesp.author.lattes0103383524288212[5]
unesp.author.orcid0000-0003-2348-2121[5]

Arquivos