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Table 6 Interaction effect of year and N rate, year and variety on grain nitrogen concentration (%) of bread wheat at Enewari, central highlands of Ethiopia

From: Effect of nitrogen fertilizer rates on grain yield and nitrogen uptake and use efficiency of bread wheat (Triticum aestivum L.) varieties on the Vertisols of central highlands of Ethiopia

N rate (kg ha−1) Year 2014 Year 2015
0 1.90cd 1.77e
120 1.96c 1.80de
240 2.25b 2.27b
360 2.51a 2.47a
Variety
Menze 2.12b 1.96c
Tsehay 2.38a 2.15b
ET-13 1.97c 2.12b
CV (%) 4.49  
  1. Means followed by the same letter are not significantly different from each other at 5% level of significance according to Duncan’s multiple range test