The Scientific World Journal / 2014 / Article / Tab 2

Research Article

Factors Controlling Carbon Metabolism and Humification in Different Soil Agroecosystems

Table 2

Biochemical properties at T1 and T2 sampling times. For each site, different letters indicate statistically different values among the treatments ( < 0.05).

EGTGDH-ase
mg PNP kg−1 h−1mg PNP kg−1 h−1mg INTF kg−1 h−1

T1
Abanilla-SpainS-C3.3b117a1.08b
S-WOF44.1a405b3.21a
Alberese-ItalyI-CA6.7a511b2.10b
I-BA6.6a883a2.52a
Puch-GermanyP-CA16.1b95b4.67a
P-IT4.4c82c1.38c
P-C44.7a182a2.26b

T2
Abanilla-SpainS-C3.6b75b1.78b
S-WOF31.3a438a5.06a
Alberese-ItalyI-CA6.3a639b2.98b
I-BA6.4a823a3.58a
Puch-GermanyP-CA15.8b145b4.31a
P-IT4.3c50c1.22c
P-C40.4a190a2.86b

EG, extracellular -glucosidase activity; TG, total -glucosidase activity; DH-ase, dehydrogenase activity.
C, control; WOF, waste organic fraction addition; CA, conventional agriculture; BA, organic agriculture; IT, intensive tillage. T1, initial sampling time; T2, one year later.