Efficiency of Topdressed Nitrogen Sources and Application Times in Fallow-Wheat Cropping System
| Autor: | K. Yalvaç, Necdet Akgün, Ali Topal |
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| Rok vydání: | 2003 |
| Předmět: | |
| Zdroj: | Communications in Soil Science and Plant Analysis. 34:1211-1224 |
| ISSN: | 1532-2416 0010-3624 |
| Popis: | Yield and quality of bread wheat in dry farming can be significantly affected by environmental conditions and fertilizer applications. This study was conducted to determine the effect of year, nitrogen (N) sources and topdressed times on the grain yield and quality traits of bread wheat (Triticum aestivum L.) in a fallow-cereal system in calcareous soils over two years, 1995/96 and 1997/98, in Central Anatolia. Three N sources, urea, ammonium nitrate (AN) and ammonium sulphate (AS), were applied as hand broadcast on the soil surface during spring at four different times. Timing and N rate applications including; 0 kg N ha−1 (N0), 40 kg N ha−1 at early spring (NE), 40 kg N ha−1 at late spring (NL), and a split application of 20 kg N ha−1 at early and 20 kg N ha−1 at late spring (NEL). The traits investigated were grain yield, protein content, protein yield, 1000 kernel weight and grain size. Effects of year (Y), N source (N) and timing (T) on yield and quality traits differed significantly. While grain and... |
| Databáze: | OpenAIRE |
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