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| Berghetti,Juliano; Casa,Ricardo Trezzi; Ferreira,Evandro Zacca; Zanella,Eduardo José; Scheidt,Bruno Tabarelli; Sangoi,Luis. |
| ABSTRACT Stalk rots compromise the translocation of water and nutrients, affecting grain filling. This study aimed to quantify the incidence of stalk rots in corn hybrids depending on sowing time and nitrogen topdressing rate, and to assess any correlation with grain yield. The experiment was conducted under field conditions in Atalanta, Santa Catarina state, Brazil, using a split-split-plot randomized block design. The hybrids AG 9025 PRO3 (super-early) and 30F53 VYH (early) were sown in the preferential (September 20) and late (December 5) sowing seasons with four nitrogen rates (0, 150, 300, and 450 kg·ha–1). The population density was 75,000 plants·ha–1 andthe nitrogen topdressing was carried out at the V4, V8, and V12 stages. The fungus Colletotrichum... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Zea mays; Colletotrichum graminicola; Nitrogen fertilization; Stalk diseases. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052019000300371 |
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| Rosa,Jaqueline Dalla; Mafra,Alvaro Luiz; Medeiros,João Carlos; Albuquerque,Jackson Adriano; Miquelluti,Davi José; Nohatto,Marcos André; Ferreira,Evandro Zacca; Oliveira,Odoni Loris Pereira de. |
| The use of cover crops in vineyards is a conservation practice with the purpose of reducing soil erosion and improving the soil physical quality. The objective of this study was to evaluate cover crop species and management systems on soil physical properties and grape yield. The experiment was carried out in Bento Gonçalves, RS, Southern Brazil, on a Haplic Cambisol, in a vineyard established in 1989, using White and Rose Niagara grape (Vitis labrusca L.) in a horizontal, overhead trellis system. The treatments were established in 2002, consisting of three cover crops: spontaneous species (SS), black oat (Avena strigosa Schreb) (BO), and a mixture of white clover (Trifolium repens L.), red clover (Trifolium pratense L.) and annual rye-grass (Lolium... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Soil management; Soil structure; Vineyards; Viticulture. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832013000500024 |
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| Rosa,Jaqueline Dalla; Mafra,Álvaro Luiz; Nohatto,Marcos André; Ferreira,Evandro Zacca; Oliveira,Odoni Loris Pereira de; Miquelluti,David José; Cassol,Paulo Cezar; Medeiros,João Carlos. |
| O manejo do solo pode interferir na disponibilidade de nutrientes e na produtividade de frutos. O objetivo deste estudo foi avaliar o efeito de formas de manejo da fitomassa de diferentes espécies de plantas de cobertura verde sobre características químicas do solo, relacionadas à matéria orgânica e à disponibilidade de nutrientes, e sobre a produtividade de uva. O experimento foi realizado na Embrapa Uva e Vinho, em Bento Gonçalves, RS, sobre um Cambissolo Háplico, num parreiral implantado em 1989, com os cultivares Niágara Branca e Niágara Rosada, no sistema de latada. Os tratamentos testados foram implantados em 2002 e consistiram em três coberturas vegetais: vegetação espontânea, aveia-preta e consórcio de trevo-branco + trevo-vermelho + azevém; e dois... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Adubo verde; Manejo do solo; Nutrientes; Plantas de cobertura; Vitis labrusca. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832009000100019 |
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