Effect of irrigation intervals and npk on yield and seed quality of wheat (triticum aestivum l.)
2009
Gharib, A.F., University of Gezira, Wad Medani (Sudan). Faculty of Agricultural Sciences | Mohamed, I.E., University of Gezira, Wad Medani (Sudan). Faculty of Agricultural Sciences | Awad-Elkareem, M.A., University of Gezira, Wad Medani (Sudan). Faculty of Agricultural Sciences
The productivity and seed quality of wheat variety (Elnilain) in response to irrigation regimes and nitrogen levels were evaluated in a two-year field experiment (2004-2006) at the University of Gezira Research Farm. The experimental design was a split plot. Three irrigation intervals (7, 14 and 21 days) were used as main plot and three nitrogen (0,43 and 86 kg N/ha) equivalent to 0, 240 and 480 kg NPK 18:18:5 respectively, were the subplot. An accompanying laboratory experiment carried out to test the effect of the treatments on seed storability and the quality of wheat seeds. Application of 86 kg N/ha coupled with the 7 days irrigation intervals gave the highest grain yield and resulted in significantly higher seed storability up to 12 month. Quality parameters as seed germination, seed germination speed and seedling vigour re also shown to be significantly improved by the above mentioned treatments. Seed storability was significantly reduced (36%) when eat seeds were stored beyond 18 month. The results of the experiment indicated that seeds produced at irrigation intervals of 7 or 14 days under highest N fertilizer preserved their quality up to one year. They also emphasized the necessity of avoiding the use of seeds that had been under rage for 18 month or more in future wheat cultivation
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