Effect of irrigation and nitrogen on yield,yield components and water use efficiency of barley in Saudi Arabia |
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| Institution: | 1. Mass spectrometry/Proteomics research Group, Max Planck Institute for Chemical Ecology, Hans-Knöll-Straße 8, D-07745 Jena, Germany;2. Department of Cell and Molecular Biology, Leibniz Institute for Natural Product Research and Infection Biology – Hans Knöll Institute, Beutenbergstr. 11a, D-07745 Jena, Germany;3. Friedrich-Schiller-University Jena, D-07737 Jena, Germany |
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| Abstract: | Water use efficiency and yield of barley were determined in a field experiment using different irrigation waters with and without nitrogen fertilizer on a sandy to loamy sand soil during 1994–1995 and 1995–1996. Depending upon different fertilizer treatments, the overall mean crop yield ranges for two crop seasons were: greenmatter from 19.48–55.0 Mg ha?1 (well water) and 21.92–66.5 Mg ha?1 (aquaculture effluent); drymatter from 6.86–20.69 Mg ha?1 (well water) and 7.87–20.90 Mg ha?1 (aquaculture effluent); biomass from 4.12–21.31 Mg ha?1 (well water) and 8.10–19.94 Mg ha?1 (aquaculture effluent) and grain yield from 2.12–5.50 Mg ha?1 (well water) and 3.25–7.25 Mg ha?1 (aquaculture effluent). The WUE for grain yield was 3.37–8.74 kg ha?1 mm?1 (well water) and 5.17–11.53 kg ha?1 mm?1 (aquaculture effluent). The WUE for total biomass ranged between 6.55–33.88 kg?1 ha?1 mm?1 (well water) and 12.88–31.70 kg ha?1 mm?1 (aquaculture effluent). The WUE for drymatter was 10.91–32.90 kg ha?1 mm?1 (well water) and 12.51–33.22 kg ha?1 mm?1 (aquaculture effluent). It was found that grain yield and WUE obtained in T-4 and T-5 irrigated with well water and receiving 75 and 100% nitrogen requirements were comparable with T-4 and T-5 irrigated with aquaculture effluent and receiving 0 and 25% nitrogen requirements. In conclusion, application of 100 to 150 kg N ha?1 for well water and up to 50 kg N ha?1 for aquaculture effluent irrigation containing 40 Mg N l?1 would be sufficient to obtain optimum grain yield and higher WUE of barley in Saudi Arabia. |
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