Effect of Sources and Rates of Nitrogen Fertilizers on Forage Yield and Nitrate Accumulation for Sudangrass | ||||
| Egyptian Journal of Soil Science | ||||
| Article 3, Volume 57, Issue 1, March 2017, Page 23-30 PDF (465.2 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/ejss.2017.3474 | ||||
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| Abstract | ||||
| A Field experiment was carried out at the Experimental Station Farm in Giza, Agricultural Research Center, Egypt, during the two successive summer seasons of 2012 and 2013. The experiment was to study the effect of varying sources, rates of nitrogen fertilizers on fresh and dry forage yields of sudangrass, chemical constituents, nitrate and nitrite accumulation in plant using a split-plot design with three replicates . The main plots were assigned to nitrogen fertilizer sources (Ammonium nitrate NH4 NO3 and ammonium sulphate (NH4)2 SO4.While, the sub-plots were occupied with rates of nitrogen fertilizer (50, 75, 100, and 125 Kg N / fed).The results indicated that the fresh and dry forage yield ton/fed, nitrogen, crude protein, phosphorus, potassium, nitrite (NO2) and nitrate (NO3)contents were significantly decreased in the second cutting as compared with the first one over both seasons. Using ammonium sulphate "(NH4)2 SO4" was better than using ammonium nitrate "NH4 NO3" as a source of nitrogen fertilizer over both cuttings and seasons. Fresh and dry forage yields of sudangrass were significantly increased as nitrogen rates increased from 50 to 75 and 100 kg N/fed and significantly decreased due to increasing nitrogen rate from 100 to 125 kg N/ fed over both seasons.It can be recommended that mineral fertilizing of sudangrass plants with 75100- kg N/fed is better to get suitable forage yields and reduce nitrate accumulation in plant. | ||||
| Keywords | ||||
| Sudangrass; nitrogen fertilizer sources; Nitrate accumulation | ||||
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