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    <subfield code="a">Santos, Fl&#xE1;vio Augusto Monteiro dos </subfield>
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    <subfield code="a">Leles, Paulo S&#xE9;rgio dos Santos </subfield>
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    <subfield code="a">Resende, Alexander da Silva </subfield>
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    <subfield code="a">Nascimento, Daniel Ferreira do </subfield>
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    <subfield code="a">Santos, Gabriel Rocha dos </subfield>
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  <datafield tag="245" ind1=" " ind2=" ">
    <subfield code="a">Estrat&#xE9;gias de controle de braqui&#xE1;rias Urochloa spp. na forma&#xE7;&#xE3;o de povoamento para restaura&#xE7;&#xE3;o florestal</subfield>
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    <subfield code="a">Publica&#xE7;&#xE3;o on-line; 31 ref.; 3 tables; 2 illus.; Summaries (En, Pt)</subfield>
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Resumo

A restaura&#xE7;&#xE3;o florestal em &#xE1;reas de pastagens, dominadas por Urochloa spp. (braqui&#xE1;rias), apresenta custo
relativamente elevado, principalmente pela dificuldade de controle dessa planta infestante. O objetivo
deste trabalho foi determinar a forma de controle de braqui&#xE1;rias mais eficiente para a forma&#xE7;&#xE3;o de
povoamento para restaura&#xE7;&#xE3;o florestal. Foram comparadas quatro estrat&#xE9;gias para controle de braqui&#xE1;ria
em &#xE1;rea de restaura&#xE7;&#xE3;o florestal no munic&#xED;pio de Bom Jardim - RJ: T1 - capina em faixas nas linhas de
plantio e ro&#xE7;adas nas entrelinhas; T2 - capina em faixas nas linhas de plantio e aplica&#xE7;&#xF5;es do herbicida
glyphosate (1,44 kg i.a. ha-1) nas entrelinhas; T3 - capina em &#xE1;rea total e cons&#xF3;rcio com leguminosas
herb&#xE1;ceas fixadoras de nitrog&#xEA;nio; T4 - capina em faixas nas linhas de plantio, ro&#xE7;adas e cons&#xF3;rcio com
eucalipto nas entrelinhas. Avaliou-se o crescimento em altura, di&#xE2;metro no n&#xED;vel do solo e di&#xE2;metro de
copa de dez esp&#xE9;cies arb&#xF3;reas em diferentes idades, bem como todos os custos envolvidos na aplica&#xE7;&#xE3;o e
manuten&#xE7;&#xE3;o de cada tratamento, at&#xE9; 30 meses ap&#xF3;s o plantio. Em todas as &#xE9;pocas de avalia&#xE7;&#xE3;o, as plantas
florestais apresentaram m&#xE9;dia de crescimento significativamente superior em altura e em di&#xE2;metro nos
tratamentos de cons&#xF3;rcio com leguminosas e aplica&#xE7;&#xE3;o de glyphosate (T3 e T2). Aos 24 meses ap&#xF3;s o
plantio, a copa das &#xE1;rvores implantadas j&#xE1; recobria 80% a 90% da &#xE1;rea da unidade experimental nesses
tratamentos. Entretanto, o custo de manuten&#xE7;&#xE3;o do T3 foi quase o dobro das unidades de T1 e o custo
deste &#xFA;ltimo foi quase tr&#xEA;s vezes superior das unidades submetidas a T2. O cons&#xF3;rcio de eucalipto nas
entrelinhas de plantio n&#xE3;o prejudicou, mas n&#xE3;o beneficiou o crescimento das esp&#xE9;cies nativas. O controle
qu&#xED;mico e o cons&#xF3;rcio com leguminosas herb&#xE1;ceas podem ser apontados como alternativas eficazes para
controle da braqui&#xE1;ria dessa &#xE1;rea, antecipando a forma&#xE7;&#xE3;o dos povoamentos e resultando em economia
de recursos.

Palavras-chave: Controle de plantas daninhas; Sistemas agrossilviculturais; Controle qu&#xED;mico; Mata Atl&#xE2;ntica</subfield>
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  <datafield tag="520" ind1=" " ind2=" ">
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Abstract

Forest restoration in pastures dominated by Urochloa spp. (brachiaria) shows relatively high cost, mainly
by the difficulty of controlling this weed. The objective of this work was to determine the most efficient
brachyria control for forest restoration formation. Four different strategies for brachiaria control in the
forest restoration area were compared in the city of Bom Jardim, Rio de Janeiro state: T1 weeding in
strips in the planting lines and mowed between the lines; T2 weeding in strips in the planting lines and
applications of glyphosate (1.44 kg i.a. ha-1) between the lines; T3 - weeding in total area and consortium with
herbaceous legumes nitrogen-fixing; T4 - weeding in strips in the planting lines, mowing and consortium
with eucalyptus between the lines. The growth in height, the diameter at ground level and the diameter of
the top of ten forest species at different ages were evaluated, as well as all costs involved in the application
and maintenance of each treatment, up to 30 months after planting. In every age of valuation, forest plants
showed significantly higher average growth in height and diameter at the ground level in the treatment
of consortium with herbaceous legumes and application of glyphosate. At 24 months after planting, the
top of the trees that were introduced had already covered 80% to 90% of the area of experimental unit that
received the T3 (legumes) and T2 (Glyphosate) treatments, respectively. However, the maintenance cost
of the T3 was almost double the T1 units and the cost of the latter was almost three times higher than the
units analyzed for T2. As a general rule, eucalyptus consortium between the lines of planting did not harm,
but also did not benefit the growth of the native species planted up to 30 months after planting. Chemical
control and consortium with herbaceous legumes can be pointed as effective alternatives to control the
brachiaria of this area, anticipating the formation of stands and resulting in resource savings.

Keywords: Weed control; Agrossilviculturais systems; Chemical control; Atlantic Forest</subfield>
  </datafield>
  <datafield tag="650" ind1=" " ind2=" ">
    <subfield code="a">ERVA DANINHA</subfield>
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  <datafield tag="650" ind1=" " ind2=" ">
    <subfield code="a">CONTROLE QU&#xCD;MICO</subfield>
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  <datafield tag="650" ind1=" " ind2=" ">
    <subfield code="a">MATA ATL&#xC2;NTICA</subfield>
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  <datafield tag="773" ind1="0" ind2=" ">
    <subfield code="0">4065</subfield>
    <subfield code="9">315595</subfield>
    <subfield code="d">Santa Maria-RS Universidade Federal de Santa Maria - Centro de Pesquisas Florestais.Departamento de Ci&#xEA;ncias Florestais. Programa de P&#xF3;s-Gradua&#xE7;&#xE3;o em Engenharia Florestal 1991</subfield>
    <subfield code="o">2024-1940</subfield>
    <subfield code="t">Ci&#xEA;ncia Florestal (Brazil)</subfield>
    <subfield code="x">0103-9954; 1980-5098 (on-line)</subfield>
    <subfield code="g">v. 30(1) p. 29-42; (Jan-Mar 2020)</subfield>
    <subfield code="w">BR2023001724</subfield>
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    <subfield code="u">https://www.scielo.br/j/cflo/a/t3VWTzT9ySvv8f3MQFb5F3S/?format=pdf&amp;lang=pt</subfield>
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    <subfield code="c">Anal&#xED;tica</subfield>
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    <subfield code="c">299848</subfield>
    <subfield code="d">299848</subfield>
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