Table 4 Effect of soil amendment on soil microbial activity measured as the hydrolysis of fluorescein diacetate (FDA) and as the respiratory emission of CO2.

From: Soil fertility and plant nutrition in an organic olive orchard after 5 years of amendment with compost, biochar or their blend

Treatment

 

FDA hydrolysed (mg kg soil−1 day−1)

CO2 Emitted (mg kg soil−1 day−1)

Non amended

Mean

74d

47b

SD

3

2

Biochar

Mean

89c

48b

SD

1

5

Compost

Mean

103b

68a

SD

2

4

Compost + Biochar

Mean

116a

70a

SD

12

4

Significancez

 

***

***

  1. z***significant at P ≤ 0.001. SD standard deviation from the mean (n = 3).
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