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Adubação nitrogenada na cultura do milho no sistema plantio direto em ano com precipitação pluvial normal e com "El Niño"
| Content Provider | Semantic Scholar |
|---|---|
| Author | Wolschick, Dolores Carlesso, Reimar Petry, Mirta Terezinha Jadoski, Sidnei Osmar |
| Copyright Year | 2003 |
| Abstract | In this study the split application of nitrogen and the maize crop pre-sowing nitrogen application under a no-tillage system followed by black oat, with two rainfall regimes were evaluated. Treatments were: (a) application of 150 kg ha-1 of N in pre-sowing and 30 kg ha-1 of N at sowing with 1997/98 "El-Nino" rainfall applications; (b) nitrogen application, being 30 kg ha-1 of N at sowing, and 30 kg ha-1 of N at 31 and 57 days after emergency (DAE), with "El-Nino" rainfall applications; (c) without N application and "El-Nino" rainfall applications and; (d) nitrogen application (b treatment), with normal rainfall applications. The experiment was conducted during 1998/99 growing season, at the Federal University of Santa Maria, in a completely randomized design, with two replications. A set of eight drainage lysimeters was used, protected from natural rainfall through an arch rain shelter. Leaf area index, plant height, above ground dry matter, grain yield and percent of N in maize grain and dry matter were evaluated. Nitrogen application on both water regimes had no effect on plant leaf area index, plant height, grain yield, percent of N in grains and N translocated to grains. Above ground dry matter and the amount of N carried out to shoot were smaller for the treatments submitted to normal rainfalls, compared to the ones that received N applications and "El-Nino" rainfalls. |
| Starting Page | 461 |
| Ending Page | 468 |
| Page Count | 8 |
| File Format | PDF HTM / HTML |
| DOI | 10.1590/S0100-06832003000300008 |
| Volume Number | 27 |
| Alternate Webpage(s) | http://www.scielo.br/pdf/rbcs/v27n3/16664.pdf |
| Alternate Webpage(s) | https://doi.org/10.1590/S0100-06832003000300008 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
