Studying the efficiency of barley (Hordeum vulgare l. ) cu. AL-Warkaa for nitrogen use and its parameters under effect of nitrogen fertilizer levels and number of cuttings | ||
| journal of kerbala university | ||
| Article 1, Volume 12, Issue 2, June 2016, Pages 182-191 PDF (0 K) | ||
| Abstract | ||
| A field experiment was conducted at the experimental farm of AL Najaf during 2012 /2013 and 2013 /2014 seasons; A split plot arrangement with Randomized Complete Block Design in three replicates was used. The objective of this experiment was to study the efficiency of AL-Warkaa cultivar on nitrogen use and its parameters under effect of nitrogen fertilizer levels (80 , 160 and 240 Kg/ ha ) were assigned in the main plots where's number of cuttings (without cut, one cut and two cuts) assigned the subplots on yield. The Results showed that nitrogen fertilizer at 80 kg/ha with cut once gave the best interaction in nitrogen use efficiency(51.50 ,40 kg.kg-1) for the two seasons ,the same nitrogen fertilizer with uncut gave the best interaction in nitrogen uptake efficiency and nitrogen harvest efficiency(3.26 , 2.08 kg.kg-1) (0.27 ,0.24 kg.kg-1) for the two seasons , the same nitrogen fertilizer with cut twice gave the best interaction in nitrogen utilization efficiency and nitrogen harvest index(24.300 kg.kg-1) (24.39%) during first season .while 160 kg/h with cut once gave the best interaction in nitrogen utilization efficiency and nitrogen harvest index (24.137 kg.kg-1)(24.15%) during the second season .also Results showed that nitrogen fertilizer at 240 kg/h with uncut the gave best interaction in total uptake of nitrogen (287.56 ,210.831 kg.kg-1) for the two seasons ,also the nitrogen fertilizer of 240 kg/h with cut once gave the best interaction in grain yield (4840 ,4360 kg/h) for the two seasons | ||
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