Table 1.
Soil quality of the experimental fields at sowing.
| Crop | Clay | Silt | Sand | Class | pH | EC | CaCO3 | SOM |
|---|---|---|---|---|---|---|---|---|
| % | % | % | μS cm−1 | % | % | |||
| F | 38 | 34 | 28 | Silty Clay | 7.86 | 685 | 31.5 | 2.55 |
| FBS0 | 42 | 30 | 28 | Clay | 8.01 | 613 | 24.5 | 1.79 |
| Δx/x (%) | 1.9 | −10.5 | −22.2 | −29.8 | ||||
| Olsen P | NO3-N | Kexc | Fe-DTPA | Mn-DTPA | Cu-DTPA | Zn-DTPA | ||
| mg kg−1 | mg kg−1 | mg kg−1 | mg kg−1 | mg kg−1 | mg kg−1 | mg kg−1 | ||
| F | 16.8 | 28.48 | 410 | 7.08 | 8.97 | 1.76 | 1.26 | |
| FBS0 | 7.8 | 24.57 | 270 | 5.78 | 6.25 | 1.43 | 0.75 | |
| Δx/x (%) | −53.6 | −13.7 | −34.1 | −18.4 | −30.3 | −18.8 | −40.5 |
F crop: the crop that was subject to conventional fertilization (F) treatment according to the local agricultural practices; FBS0 crop: the crop that received the corresponding FBS0 treatment; EC: electric conductivity; Kexch: soil exchangeable potassium. SOM: soil organic matter; DTPA: diethylenetriaminepentaacetic acid.