Cover crops | Zinc levels (mg·kg−1) | Average | |||
0 | 10 | 20 | 40 | ||
1. Sunn hemp | 3.01c | 3.38d | 2.54d | 2.75c | 2.92d |
2. Smooth crotalaria | 0.66de | 1.07ef | 1.13ef | 0.70e | 0.89fg |
3. Showy crotalaria | 1.08de | 1.24ef | 1.23ef | 0.96de | 1.13f |
4. Calopo | 0.38e | 0.83f | 0.79f | 0.94de | 0.74g |
5. Pueraria | 0.57de | 0.78f | 0.83f | 0.74e | 0.73g |
6. Pigeonpea | 1.18d | 1.60e | 2.04de | 2.03c | 1.71e |
7. Lablab | 3.46c | 7.73b | 7.96b | 5.69b | 6.21b |
8. Black velvet bean | 5.35b | 6.49c | 7.55b | 6.61b | 6.50b |
9. Gray velvet bean | 3.03c | 7.67b | 5.83c | 1.85cd | 4.59c |
10. Jack bean | 7.95a | 9.27a | 9.98a | 9.31a | 9.13a |
Average | 2.67c | 4.01a | 3.99a | 3.16b | 3.45 |
F-Test | |||||
Zn levels (Zn) | ** | ||||
Cover crops (C) | ** | ||||
Zn × C | ** | ||||
CV Zn (%) | 9.53 | ||||
CV C (%) | 8.30 |