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| Espindula,Marcelo Curitiba; Rocha,Valterley Soares; Souza,Moacil Alves de; Grossi,José Antônio Saraiva; Souza,Leandro Torres de. |
| Objetivou-se avaliar o efeito de doses e formas de aplicação de nitrogênio sobre o desempenho e produção de duas cultivares de trigo. O experimento, conduzido em Viçosa-MG, de maio a setembro de 2005, foi instalado segundo um esquema fatorial 2x2x5 no delineamento de blocos casualizados, com quatro repetições. Os tratamentos avaliados consistiram da combinação das cultivares de trigo, BRS 210 e Pioneiro, duas formas de aplicação de adubo nitrogenado (dose total aplicada por ocasião da semeadura ou 20 kg ha-1 na semeadura e o restante em cobertura no início da fase de perfilhamento) e cinco doses de nitrogênio (40, 60, 80, 100 e 120 kg ha-1) tendo como fonte o sulfato de amônio. A cultivar Pioneiro apresentou maior potencial produtivo que a cultivar BRS... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Triticum aestivum; Adubação nitrogenada; Acamamento; Produtividade. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542010000600007 |
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| Souza,Leandro Torres de; Espíndula,Marcelo Curitiba; Rocha,Valterley Soares; Dias,Denise Cunha Fernandes dos Santos; Souza,Moacil Alves de. |
| Plant lodging in wheat has been controlled through growth retardants. However, there is lack of information on the effect of these products on the physiological quality of seeds. The objective of this study was to evaluate the physiological quality of wheat seeds obtained under different rates and application times of three growth retardants. The trial was carried out in Viçosa-MG, from May to September 2005, in a factorial and hierarchical scheme, in randomized block design with four replications and a control treatment. The treatments consisted of 500, 1000 and 1500g ha-1 of chlormequat; 40, 80 and 120g ha-1 of paclobutrazol and 62.5, 125 and 187.5g ha-1 of trinexapac-ethyl applied at the 6 or 8 growth stage based on the scale of Feeks and Large, and a... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Triticum aestivum; Chlormequat; Paclobutrazol; Trinexapac-ethyl; Germination and vigor. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782010000600031 |
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| Espindula,Marcelo Curitiba; Rocha,Valterley Soares; Souza,Leandro Torres de; Souza,Moacil Alves de; Campanharo,Marcela; Grossi,José Antônio Saraiva. |
| The objective in this study was to evaluate the effects of nitrogen rates in association with rates of the growth retardant trinexapac-ethyl on wheat. The experiment was conducted in Viçosa, MG and arranged in a 5×4 factorial, randomized block design, with four repetitions. A combination of five nitrogen rates (30, 60, 90, 120 and 150kg ha-1) with four rates of trinexapac-ethyl (0, 62.5, 125 and 187.5g ha-1) were tested. Trinexapac-ethyl promotes reduction of soot dry mass and grain yield at the lowest N rates, but at the highest N rates there is increase in these characteristics. The combination between N and trinexapac-ethyl rates that promotes higher shoot dry mass is 150kg ha-1 and 187g ha-1 but that promotes higher grain yield is 100kg ha-1 and 120g... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Triticum aestivum; Plant height; Lodging; Grain yield. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782011001200002 |
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