Nitrogen Fertilizer Rate and Cultivar Interaction Effects on Nitrogen Recovery, Utilization Efficiency, and Agronomic Performance of Spring Barley
Table 3
Some agronomic characters of barley cultivars as influenced by rates of N fertilizer at Lacombe, Alberta, Canada, during 1994 to 1996.
Variable
Biomass (kg ha−1)
Leaf area (cm2)
Number of tillers plant−1
Time to maturity (degree days)
Lodging incidence (%)
Disease score (1–9)
Cultivar
N rate
Manley
0
10382b
173.3b
3.58b
1370.5
100
4.39
50
12135a
232.1ab
3.82b
1387.3
141
4.39
100
12377a
347.3a
4.69a
1398.0
152
4.67
Noble
0
9588b
139.2b
3.40
1337.9b
100
2.94
50
11313a
219.5a
3.73
1348.0ab
102
3.39
100
12024a
242.5a
3.67
1374.2a
147
3.06
Tukwa
0
9683b
149.2b
3.40
1303.4
100
3.28
50
11299a
199.4a
3.67
1312.2
137
3.28
100
11872a
185.7a
3.98
1323.1
131
3.06
Mean
0
9884b
153.9b
3.46b
1337.3
100
3.54
50
11663a
217.0ab
3.74ab
1349.2
126
3.68
100
12010a
258.5a
4.11a
1365.1
143
3.59
Means of different N rates within cultivar or overall mean followed by different letters are significantly different at . Lodging incidence was assessed as percent increase over the unfertilized plot.
