Skip to main content

Table 3 Grain yield (GY), grain nitrogen uptake (GNUP) and total nitrogen uptake (TNUP) 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) N rate (kg ha−1)
120 240 360 120 240 360 120 240 360
GY (kg ha−1) GNUP (kg ha−1) TNUP (kg ha−1)
T 1 4436.40efg 4948.16def 5468.85cd 78.04fg 106.19de 127.5bc 96.27fg 131.45de 161.02bc
T 2 4076.89g 4356.21fg 4406.88efg 71.09g 91.56ef 100.24de 85.18g 114.12ef 124.20e
T 3 4307.19fg 5050.70de 4688.13efg 68.08g 91.22ef 94.79def 83.94g 116.11ef 121.24e
T 4 4362.17fg 5538.53bcd 6189.36ab 70.96g 110.15cd 134.17ab 92.97g 144.62cd 175.63b
T 5 4756.73ef 6060.04abc 6436.00a 82.49fg 128.96b 148.55a 100.05fg 170.04b 201.47a
Treated mean 5005.48a 100.27 127.76a
Control mean 1307.96b 24.89 28.36b
   NR × NT Treated versus control   NR × NT Treated versus control   NR × NT Treated versus control
CV (%)   7.2 3.84   9.72 2.32   8.72 1.51
  1. Means followed by the same letters for the same parameter are not significantly different at P ≤ 0.05
  2. CV Coefficient of variation, NR nitrogen rate, NT time of nitrogen application
  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