Cover crops

Zinc levels (mg·kg⁻¹)

Average

0

10

20

40

1. Sunn hemp

0.06c

0.22de

0.04d

0.15c

0.12d

2. Smooth crotalaria

0.03c

0.05e

0.07d

0.03c

0.05d

3. Showy crotalaria

0.03c

0.08e

0.03d

0.08c

0.06d

4. Calopo

0.05c

0.09e

0.03d

0.05c

0.06d

5. Pueraria

0.04c

0.07e

0.06d

0.03c

0.05d

6. Pigeonpea

0.03c

0.14e

0.08d

0.07c

0.08d

7. Lablab

0.36b

0.63bc

0.58bc

0.54b

0.53b

8. Black velvet bean

0.84a

1.05a

0.93a

0.80a

0.90a

9. Gray velvet bean

0.41b

0.82ab

0.70b

0.43b

0.59b

10. Jack bean

0.36b

0.45cd

0.40c

0.42b

0.41c

Average

0.22c

0.36a

0.29b

0.26bc

F-Test

Zn levels (Zn)

**

Cover crops (C)

**

Zn × C

**

CV Zn (%)

26.83

CV C (%)

25.95