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| SANGOI, L.; ENDER, M.; GUIDOLIN, A.F.; ALMEIDA, M.L. de; HEBERLE, P.C.. |
| The interest in reducing maize row spacing in the short growing season regions of Brazil is increasing due to potential advantages such as higher radiation use efficiency. This experiment was conducted to evaluate the effect of row spacing reduction on grain yield of different maize cultivars planted at different dates. The trial was conducted in Lages, in the State of Santa Catarina, Brazil, during 1996/97 and 1997/98 growing seasons, in a split-split plot design. Early (October 1st) and normal (November 15) planting dates were tested in the main plot; two morphologically contrasting cultivars (an early single-cross and a late double-cross hybrids) were evaluated in the split plots and three row widths (100, 75 and 50 cm) were studied in the split-split... |
| Tipo: Artigo em periódico indexado (ALICE) |
Palavras-chave: Zea mays; Hybrids; Sowing date; Crop management; Hibridos; Epoca de semeadura; Manejo de cultura. |
| Ano: 2001 |
URL: http://www.alice.cnptia.embrapa.br/handle/doc/103911 |
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| SANGOI, L.; ENDER, M.; GUIDOLIN, A.F.; ALMEIDA, M.L. de; KONFLANZ, V.A.. |
| Genetic selection of maize hybrids is often conducted using high N rates during the breeding cycle. This procedure may either lead to the release of genotypes that present nitrogen luxury consumption or require a stronger N input to accomplish their yield potential. This work was carried out to evaluate the effects of N rates on grain yield and N use efficiency of hybrids cultivated in different decades in Southern Brazil. The trial was performed in Lages, Santa Catarina State. A split plot design was used. Hybrids Ag 12, Ag 28, Ag 303 and Ag 9012, released during the 60's, 70's, 80's and 90's, respectively, were evaluated in the main plots. Nitrogen rates equivalent to 0, 50, 100 and 200 kg ha-1 were side-dressed in the split-plots when each hybrid had... |
| Tipo: Artigo em periódico indexado (ALICE) |
Palavras-chave: Zea mays; Hybrids; Absorption; Crop yield; Hibridos; Absorcao; Rendimento de cultura. |
| Ano: 2001 |
URL: http://www.alice.cnptia.embrapa.br/handle/doc/103890 |
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