Table 1 Mean values (±standard errors) of enzymatic activities and soil respiration in R - and S -carvone treated samples
From: Effects of the two carvone enantiomers on soil enzymes involved in the C, P, and N cycles
Week | Enzymatic activity | Soil respiration (mg CO 2d -1) | ||||||
|---|---|---|---|---|---|---|---|---|
Dehydrogenase (μg g -124 hr -1) | Alkaline phospho-monoesterase (mg kg -1 hr -1) | Urease (mg kg -12 hr -1) | ||||||
R-(-) carvone | S-(+) carvone | R-(-) carvone | S-(+) carvone | R-(-) carvone | S-(+) carvone | R-(-) carvone | S-(+) carvone | |
1st | 9.4 ± 0.71 | 13.2 ± 0.69 | 444.1 ± 40.2 | 468.6 ± 21.4 | 129.7 ± 5.94 | 25.2 ± 2.84 | 6.5 ± 0.18 | 5.2 ± 0.72 |
2nd | 15.7 ± 0.66 | 11.8 ± 0.56 | 390.5 ± 27.2 | 481.2 ± 16.1 | 102.1 ± 8.87 | 18.1 ± 1.37 | 2.5 ± 0.04 | 2.5 ± 0.10 |
3rd | 11.2 ± 0.35 | 10.4 ± 0.60 | 577.7 ± 19.4 | 445.6 ± 38.6 | 81.9 ± 5.12 | 47.9 ± 1.07 | 4.7 ± 0.06 | 4.1 ± 0.05 |
4th | 12.4 ± 0.34 | 12.1 ± 0.59 | 544.3 ± 71.6 | 390.9 ± 15.2 | 62.5 ± 4.09 | 22.5 ± 2.13 | 1.0 ± 0.04 | 0.9 ± 0.02 |