Table 5. Nitrogen uptake at anthesis, physiological maturity, and post-anthesis accumulation, N translocation, N translocation efficiency, and contribution to grain N under different organic and inorganic N fertilizer treatment.
NA (g hill-1) | NT | NTE | CNRG | |||
---|---|---|---|---|---|---|
Treatment | Ant | Mat | Pos-A | (g hill-1) | (%) | (%) |
Early | 0.37c | 0.14c | ||||
T1 | 0.23c | 0.15c | 64.3a | 77.7a | ||
T2 | 0.41b | 0.65b | 0.23b | 0.26ab | 61.5b | 68.9b |
T3 | 0.39b | 0.64b | 0.23b | 0.25b | 62.5b | 68.0b |
T4 | 0.43a | 0.69a | 0.24a | 0.26ab | 61.0b | 61.1c |
T5 | 0.40b | 0.63b | 0.23b | 0.25b | 62.3b | 70.1b |
T6 | 0.44a | 0.70a | 0.26a | 0.27a | 61.4b | 62.6c |
0.38a | 0.66a | 0.23a | 0.23b | 61.7b | 68.0b | |
Late | 0.35c | 0.12b | ||||
T1 | 0.23c | 0.14b | 67.2a | 78.9a | ||
T2 | 0.38b | 0.60b | 0.23a | 0.30a | 65.0b | 73.2b |
T3 | 0.38b | 0.60b | 0.22a | 0.28a | 64.3b | 68.5bc |
T4 | 0.41a | 0.64a | 0.23a | 0.29a | 62.7b | 66.0c |
T5 | 0.39b | 0.62b | 0.23a | 0.28a | 63.4b | 73.1c |
T6 | 0.42a | 0.63a | 0.21a | 0.29a | 63.0b | 67.3c |
Average | 0.37a | 0.61b | 0.22a | 0.25a | 64.2a | 71.1a |
ANOVA | ||||||
Treatments | ** | ** | * | * | * | * |
Seasons | ns | * | ns | * | * | ** |
S ×T | ns | ns | ns | ns | ns | ns |
Note: The treatments coding details already showed in the above table; CF—chemical fertilizer, CM—cattle manure, PM—poultry manure, Ant—anthesis, Mat—physiological maturity, Pos-A—post-anthesis accumulation, NT—nitrogen translocation, NTE—nitrogen translocation efficiency, CNRG—contribution to grain N, NA—Nitrogen accumulation. The mean comparison in columns was made using Tukey tests for treatments mean in both seasons and the lettering was done on basis of Tuky HSD test at 5% using simple effect. ns = non-significant
*, ** = significant at 5% and ** at 1%, respectively.