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Table 7 Apparent nitrogen recovery efficiency (RE) and nitrogen harvest index (NHI) as influenced by the interaction effect of N fertilizer rate and time of N application

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

N timing N rate (kg ha−1) N rate (kg ha−1)
120 240 360 120 240 360
RE % NHI (%)
T 1 56.1ab 42.71d–f 36.68ef 80.99a–c 81.08a–c 79.21a–d
T 2 46.85b–d 35.48fg 26.46gh 83.75a 80.55a–c 80.81a–c
T 3 45.81c–e 35.53fg 25.64h 81.45a–c 80.28a–c 78.22b–d
T 4 53.34a–c 48.19b–d 40.74d–f 76.66cd 76.68cd 76.39cd
T 5 59.24a 58.78a 47.92b–d 82.65ab 76.04cd 73.82d
CV (%) 11.94 3.82
  1. Means followed by the same letters for the same parameter are not significantly different at P ≤ 0.05
  2. CV Coefficient of variance
  3. T1 = N application ½ at sowing and ½ at tillering; T2 = N application at tillering; T3 = N application 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