Table 5 Effects of Tithonia diversifolia Biochar on leaf nutrient concentration of broccoli.

From: Influence of Tithonia diversifolia biochar on selected soil physicochemical properties, leaf nutrient concentrations and broccoli growth

Treatment

N (%)

P (mg kg− 1)

K (mg kg− 1)

Ca (mg kg− 1)

Mg (mg kg− 1)

0 t ha− 1 (control)

2.10d

0.29e

1.96e

1.76e

0.68e

10 t ha− 1 tithonia biochar

2.80c

0.42d

2.84d

1.98d

0.79d

20 t ha− 1 tithonia biochar

4.02a

0.68a

3.98a

2.85a

1.28a

30 t ha− 1 tithonia biochar

3.50b

0.56b

3.42b

2.54b

0.96b

40 t ha− 1 tithonia biochar

3.29b

0.48c

3.05c

2.18c

0.85c

  1. Means followed by the same letter on a column are not significantly different at p = 0.05 according to Duncan’s multiple range test (DMRT)
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