Table 3 Effect of manure management on rainfall use efficiency at different growth stages of maize.
Years | Treatments | Rainfall use efficiency (kg ha−1mm−1) | ||||
|---|---|---|---|---|---|---|
Seedling-jointing stage | Jointing-big trumpet stage | Big trumpet-tasseling stage | Tasseling-grain filling stage | Grain filling-maturity stage | ||
2008 | Control | 1.1 ± 0.2a | 8.0 ± 0.2d | 139.1 ± 3.1c | 30.5 ± 0.5b | 51.9 ± 2.1d |
Low manure | 1.1 ± 0.1a | 9.0 ± 0.2c | 165.2 ± 4.1b | 27.9 ± 1.2c | 75.5 ± 1.5c | |
Medium manure | 1.2 ± 0.2a | 10.6 ± 0.3b | 172.5 ± 3.6b | 33.1 ± 0.8a | 79.0 ± 1.2b | |
High manure | 1.2 ± 0.1a | 11.3 ± 0.2a | 185.0 ± 3.1a | 34.4 ± 1.0a | 94.9 ± 1.3a | |
2009 | Control | 1.0 ± 0.2a | 7.3 ± 0.2d | 73.5 ± 2.7c | 124.9 ± 1.5b | 22.3 ± 0.6d |
Low manure | 1.0 ± 0.1a | 8.5 ± 0.3c | 90.4 ± 2.2b | 117.1 ± 1.7c | 24.8 ± 0.5c | |
Medium manure | 1.0 ± 0.2a | 9.1 ± 0.2b | 94.1 ± 3.1b | 141.2 ± 1.1a | 26.5 ± 0.8b | |
High manure | 1.1 ± 0.1a | 10.4 ± 0.3a | 101.8 ± 0.9a | 141.8 ± 1.2a | 28.1 ± 1.0a | |
2010 | Control | 1.0 ± 0.1a | 17.9 ± 2.1d | 40.4 ± 0.2d | 32.9 ± 2.3b | 16.6 ± 2.5d |
Low manure | 1.0 ± 0.1a | 26.9 ± 1.7c | 42.4 ± 0.3c | 31.7 ± 1.1b | 24.1±2.1c | |
Medium manure | 1.0 ± 0.2a | 31.6 ± 1.0b | 44.8 ± 0.7b | 38.8 ± 1.2a | 29.4 ± 1.2b | |
High manure | 1.0 ± 0.2a | 35.9 ± 1.1a | 47.7 ± 0.4a | 37.3 ± 2.1a | 32.6 ± 1.2a | |
