2016
DOI: 10.1590/s0100-83582016340100010
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Eucalypt Growth Submitted to Management of Urochloa spp.

Abstract: -The objective of this work was to evaluate the initial growth and the physiological characteristics of eucalypt submitted to different managements of signalgrass. The experiment was conducted in a protected environment, using a randomized blocks design with five repetitions. The treatments were arranged in a (5 x 2) + 1 factorial design, and the first factor corresponded to the types of weed management (no control; chemical control keeping the signalgrass shoot on the soil; chemical control with removal of th… Show more

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Cited by 3 publications
(4 citation statements)
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References 9 publications
(11 reference statements)
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“…In the study conducted by Toledo et al (2000), clones of Eucalyptus grandis x Eucalyptus urophylla in initial development in the presence of Urochloa decumbens, after about 1 year, presented reduction of 70% in the stem diameter and 68% in height in relation to eucalyptus plants without competition. Reduced growth of a clone of E. grandis x E. urophylla in the presence of U. brizantha and U. decumbens also was reported by Ferreira et al (2016). The coexistence of the species caused a reduction of approximately 40% in the root collar diameter, 60% in the total dry weight and 76% in the leaf area 107 days after transplanting the seedlings.…”
Section: Discussionmentioning
confidence: 57%
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“…In the study conducted by Toledo et al (2000), clones of Eucalyptus grandis x Eucalyptus urophylla in initial development in the presence of Urochloa decumbens, after about 1 year, presented reduction of 70% in the stem diameter and 68% in height in relation to eucalyptus plants without competition. Reduced growth of a clone of E. grandis x E. urophylla in the presence of U. brizantha and U. decumbens also was reported by Ferreira et al (2016). The coexistence of the species caused a reduction of approximately 40% in the root collar diameter, 60% in the total dry weight and 76% in the leaf area 107 days after transplanting the seedlings.…”
Section: Discussionmentioning
confidence: 57%
“…The large reduction of growth of S. terebinthifolius in combination with Urochloa brizantha clearly revealed how harmful the competition imposed by this grass is in the first months after planting the tree species. Various researchers have reported evidence that the presence of plants of the Urochloa genus can negatively influence growth of recently planted tree species (SILVA et al, 2000;TOLEDO et al, 2001;MONQUERO et al, 2011;MACIEL et al, 2011;FERREIRA et al, 2016). In the study conducted by Toledo et al (2000), clones of Eucalyptus grandis x Eucalyptus urophylla in initial development in the presence of Urochloa decumbens, after about 1 year, presented reduction of 70% in the stem diameter and 68% in height in relation to eucalyptus plants without competition.…”
Section: Discussionmentioning
confidence: 99%
“…Para os efeitos quantitativos foi realizada Análise de Regressão Polinomial, utilizando-se o Programa Estatístico SAEG. com forrageiras, como capim-braquiária e capim-colonião, na redução da massa seca de folhas, caules, ramos e raízes, além da diminuição na área foliar e número de folhas (DINARDO et al, 2003;FERREIRA et al, 2016;MEDEIROS et al, 2016).…”
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“…No levantamento da comunidade infestante foram identificadas 27 espécies de plantas daninhas, distribuídas em 23 gêneros e 11 famílias botânicas, sendo verificada Resultados similares foram verificados no levantamento realizado porSantos et al (2013), no qual se destacaram as famílias Poaceae e Asteraceae como sendo as de maior riqueza de espécies daninhas em cultivos de eucalipto nos municípios de Santana do Paraíso e Guanhães, MG, Brasil.Tabela 2 -Relação de espécies daninhas identificadas em cultivo de eucalipto, aos 60 dias após o plantio, organizadas por família, nome científico, nome comum e número de indivíduos por espécie em função de doses do herbicida oxyfluorfen Famílias de espécies daninhas Monocotiledôneas e Dicotiledôneas, respectivamente. sensível à competição exercida pelas plantas daninhas, com reflexos negativos no crescimento das plantas jovens.As espécies de maior ocorrência na área experimental foram Chenopodium carinatum (19,82% em relação ao número total de indivíduos), Blainvillea biaristata Urochloa decumbens, por apresentarem alta eficiência na absorção e uso da água, rápido crescimento inicial e elevada produtividade de biomassa, são muito competitivas nos estádios iniciais de crescimento do eucalipto(FERREIRA et al, 2016). Nesse período, as mudas de eucalipto…”
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