Research Article
Compost and Biochar to Promote Soil Biological Activities under Sweet Potatoes Cultivation in a Subtropical Semiarid Region
Table 1
ICP-OES parameters for the analysis of K+ and Na+ for the various soil treatments.
| Parameter | Instrumental settings |
| λna | 588.983 nm | λk | 766.455 nm | RF power | 1500 W | Nebulizer | GemCone (low flow) | Plasma flow | 15 L/min | Auxiliary flow | 0.2 L/min | Nebulizer flow | 0.55 L/min | Sample flow | 1.50 mL/min | Injector | 2.0 mm alumina | Spray chamber | Cyclonic | Integration time | 20 seconds | Replicates | 3 |
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