Table 1 Chemical properties of a C. papaya L. rhizospheric soil under both conventional and organic farming systems
From: Crop management as a driving force of plant growth promoting rhizobacteria physiology
Chemical characterization | Conventional | Organic | P value |
|---|---|---|---|
pH | 5.5 | 6.6* | 0.041 |
P (mg dm−3) | 355.3 | 382.7n.s. | 0.643 |
K (mg dm−3) | 189.0 | 116.0* | 0.032 |
Ca (cmolc dm−3) | 4.4 | 4.4n.s. | 0.812 |
Mg (cmolc dm−3) | 0.6 | 0.9n.s. | 0.073 |
Na (cmolc dm−3) | 0.1 | 0.2n.s. | 0.056 |
C (%) | 1.4 | 1.3 | 0.104 |
MO (g dm−3) | 23.3 | 22.4n.s. | 0.138 |
Cu (mg dm−3) | 2.8 | 8.6*** | 0.00014 |
Zn (mg dm−3) | 22.6 | 14.0** | 0.0085 |
Mn (mg dm−3) | 10.0 | 23.0** | 0.0012 |
S (mg dm−3) | 127.5 | 35.3*** | 0.00001 |
B (mg dm−3) | 0.9 | 1.4* | 0.0193 |
Fe (mg dm−3) | 26.8 | 21.2* | 0.045 |
H + Al (cmolc dm−3) | 2.3 | 0.8* | 0.014 |
BS (cmolc dm−3) | 5.6 | 5.7n.s. | 0.569 |
T (cmolc dm−3) | 7.9 | 6.5* | 0.027 |
t (cmolc dm−3) | 5.6 | 5.7n.s. | 0.452 |
V (%) | 70.7 | 87.3* | 0.017 |