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Table 6 Interaction effect of year × N timing on agro-physiological efficiency (APE) and nitrogen harvest index (NHI) of bread wheat

From: Effect of split application of different N rates on productivity and nitrogen use efficiency of bread wheat (Triticum aestivum L.)

  Year Year
2014 2015 2014 2015
N timing APE (kg kg−1) NHI (%)
T 1 37.21d 38.43cd 82.8a 78.05bc
T 2 45.23ab 35.4d 83.35a 80.06ab
T 3 49.75a 42.2bc 81.43ab 78.34bc
T 4 39.62cd 39.35cd 81.43ab 71.72d
T 5 36.61d 38.02cd 80.31ab 74.69cd
CV (%) 8.45 3.82
  1. Means followed by the same letters for the same parameters are not significantly different at P ≤ 0.05
  2. CV Coefficient of variation
  3. T1 = N application of ½ at sowing and ½ at tillering; T2 = N application at tillering; T3 = N application of ½ at tillering and ½ booting; T4 = N application 1/3 at sowing, 1/3 at tillering and 1/3 at booting; and T5 = N application ¼ at sowing, ½ at tillering and ¼ at booting