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| Loss,Arcângelo; Basso,Alex; Oliveira,Bruno Salvador; Koucher,Leôncio de Paula; Oliveira,Rodolfo Assis de; Kurtz,Claudinei; Lovato,Paulo Emílio; Curmi,Pierre; Brunetto,Gustavo; Comin,Jucinei José. |
| Decorrente dos sistemas de manejo empregados no solo, como o sistema de preparo convencional (SPC) versus o sistema de plantio direto de hortaliças (SPDH), modificações nos atributos edáficos ocorrem; por exemplo, nos índices de agregação do solo e seu teor de carbono orgânico total (COT). Objetivaram-se quantificar os teores de COT e avaliar os índices de agregação do solo e a distribuição dos agregados por classes de diâmetro sob cultivo de cebola em SPDH e SPC, comparados a uma área de mata adjacente em Ituporanga, SC. Os tratamentos constituíram-se da semeadura de plantas de cobertura, solteiras e consorciadas, em SPDH: vegetação espontânea (VE); 100 % aveia; 100 % centeio; 100 % nabo-forrageiro; consórcio de nabo-forrageiro (14 %) e centeio (86 %); e... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Sistema plantio direto de hortaliças; Plantas de cobertura; Índices de agregação; Análise de componentes principais. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832015000401212 |
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| Oliveira,Rodolfo Assis de; Brunetto,Gustavo; Loss,Arcângelo; Gatiboni,Luciano Colpo; Kürtz,Claudinei; Müller Júnior,Vilmar; Lovato,Paulo Emílio; Oliveira,Bruno Salvador; Souza,Monique; Comin,Jucinei José. |
| ABSTRACT Cover crops contribute to nutrient cycling and may improve soil chemical properties and, consequently, increase crop yield. The aim of this study was to evaluate cover crop residue decomposition and nutrient release, and the effects of these plants on soil chemical properties and on onion (Allium cepa L.) yield in a no-tillage system. The experiment was carried out in an Inceptisol in southern Brazil, where cover crops were sown in April 2012 and 2013. In July 2013, shoots of weeds (WD), black oats (BO), rye (RY), oilseed radish (RD), oilseed radish + black oats (RD + BO), and oilseed radish + rye (RD + RY) were cut at ground level and part of these material from each treatment was placed in litter bags. The litter bags were distributed on the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Allium cepa; Nutrient cycling; No-till system. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832016000100520 |
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| Oliveira,Rodolfo Assis de; Comin,Jucinei José; Tiecher,Tales; Piccin,Rogério; Somavilla,Luiza Michelon; Loss,Arcângelo; Lourenzi,Cledimar Rogério; Kürtz,Claudinei; Brunetto,Gustavo. |
| ABSTRACT Cover crops grown alone or in association can take up different amounts of phosphorus (P) from the soil and accumulate it in different P-forms in plant tissue. Cover crop residues with a higher content of readily decomposed forms may release P more quickly for the next onion crop. The aim of this study was to evaluate the release of P forms from residues of single and mixed cover crops in agroecological no-till onion (Allium cepa L.) production. The experiment was conducted in Ituporanga, Santa Catarina (SC), Brazil, in an Inceptisol, with the following treatments: weeds, black oat (Avena sativa L.), rye (Secale cereale L.), oilseed radish (Raphanus sativus L.), oilseed radish + black oat, and oilseed radish + rye. Cover crops were sown in April... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Green manure crops; P cycling; Allium cepa L. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832017000100502 |
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