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    <subfield code="a">Cordeiro, L. A. M. </subfield>
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    <subfield code="a">Reis, M. S. </subfield>
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    <subfield code="a">Agnes, E. L. </subfield>
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    <subfield code="a">Cecon, P. R. </subfield>
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  <datafield tag="245" ind1=" " ind2=" ">
    <subfield code="a">Efeito do plantio direto no controle de tiririca (Cyperus rotundus l.) e outras plantas daninhas na cultura do milho</subfield>
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    <subfield code="a">Publica&#xE7;&#xE3;o on-line; 13 ref.; 7 tables; Summaries (En, Pt)</subfield>
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RESUMO:  

Objetivou-se  neste  trabalho  avaliar  a  din&#xE2;mica  populacional  de  tiririca  (Cyperus rotundus L.) e de outras esp&#xE9;cies de plantas daninhas na cultura do milho (Zea mays L.) cultivado para gr&#xE3;o e para silagem, sob plantio direto e convencional. No primeiro ano, cultivou-se o milho em &#xE1;rea total, sendo metade da &#xE1;rea sob plantio direto  e  a  outra  metade  sob  preparo  convencional.  Posteriormente,  dividiu-se  cada  &#xE1;rea em duas partes: uma para produzir milho para gr&#xE3;o e outra para produzir milho para  silagem.  Foram  avaliadas:  a)  plantas  daninhas  antes  da  desseca&#xE7;&#xE3;o  e/ou  preparo do solo e ap&#xF3;s a colheita do milho; e, b) controle de plantas daninhas ap&#xF3;s a aplica&#xE7;&#xE3;o  dos  herbicidas  em  p&#xF3;s-emerg&#xEA;ncia  no  cultivo  do  milho  e  do  feij&#xE3;o.  Concluiu-se que: o tipo de manejo do solo influenciou o controle de C. rotundus L., sendo  superior  nas  &#xE1;reas  onde  fez  o  plantio  direto,  independentemente  se  para  produ&#xE7;&#xE3;o de milho para gr&#xE3;o ou para silagem. Observou-se aumento do n&#xFA;mero de plantas  de  C.  rotundus  L.  nos  tratamentos  sob  preparo  convencional  e  milho  para  silagem.   Quanto   &#xE0;s   demais   esp&#xE9;cies   de   plantas   daninhas,   estas   n&#xE3;o   foram   influenciadas pelo tipo de manejo do solo e a finalidade de cultivo de milho, exceto a S. niveum Kuntze, que ocorreu somente nos tratamentos sob milho silagem. 

Palavras-chave: Plantio direto; controle de plantas daninhas; tiririca; milho. 






NO-TILLAGE EFFECT IN YELLOW NUTSEDGE(Cyperus rotundus L.) AND OTHER WEED SPECIES CONTROL AT MAIZE CROP 

ABSTRACT:  

It  was  aimed  at  in  this  work  to  evaluate  the  population  dynamics  of  yellow nutsedge (Cyperus rotundus L.) and of other species of weeds at maize (Zea mays   L.)   crop   also   cultivated   for   grain   and   for   silage,   under   no-tillage   and   conventional tillage of the soil conditions. In the first year, the maize was cultivated in total area, being half of the area in no-tillage and the other half in conventional tillage. Later each area was splitted in two plots: one to produce maize for grain and other to produce   maize   for   silage.   They   were   appraised:   a)   weed   plants   before   the   desiccation and/or the soil tillage and after the crop of the maize and bean; b) weed control after the application of the herbicides in post-emergency at the maize. It was ended that: the type of management of the soil influence C. rotundus L. control that was observed independently in the areas where it was made the no-tillage, whether maize  for  grain  or  silage.  There  was  no  increase  of  C.  rotundus  L.  infestation  at  conventional tillage. Infestation of the other weeds species was not influenced by the type of the soil management or maize cultivation system, except the lyon velvet bean (Stizolobium niveum Kuntze), that had infestation at maize for silage. 

Key-words: No-tillage; weed control; yellow nutsedge; maize.</subfield>
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  <datafield tag="650" ind1=" " ind2=" ">
    <subfield code="a">PLANTIO DIRETO</subfield>
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  <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">TIRIRICA</subfield>
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  <datafield tag="650" ind1=" " ind2=" ">
    <subfield code="a">MILHO</subfield>
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  <datafield tag="773" ind1="0" ind2=" ">
    <subfield code="0">3935</subfield>
    <subfield code="9">347766</subfield>
    <subfield code="d">Bras&#xED;lia-DF Grupo de Especialista em Plantas Daninhas nos Cerrados 2000</subfield>
    <subfield code="o">2025-0268</subfield>
    <subfield code="t">Weed Control Journal (Brazil)</subfield>
    <subfield code="x">2236-1065 (on-line at&#xE9; v. 19(4); (2020))</subfield>
    <subfield code="g">v. 5(1) p. 1-9; (2006)</subfield>
    <subfield code="w">BR2026001917</subfield>
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    <subfield code="u">https://www.rbherbicidas.com.br/index.php/rbh/article/view/39/11</subfield>
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    <subfield code="c">ANA</subfield>
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    <subfield code="c">348392</subfield>
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