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Nutrient availability
Nutrient availability across pH ranges.
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Relative availability of nitrogen, phosphorus, potassium, sulfur, calcium, magnesium, iron, manganese, boron, copper, zinc and molybdenum across pH 4.0–10.0. CropSalt’s optimal range is pH 5.8–6.4.
Propagation runs lower on purpose
The optimal range is pH 5.8–6.4. Our clone and rooting guides use pH 5.5–5.7 on purpose, then move into the optimal range once plants are rooted.
| Nutrients shown | pH range | Optimal |
|---|---|---|
| Nitrogen, phosphorus, potassium, sulfur, calcium, magnesium, iron, manganese, boron, copper + zinc, molybdenum | 4.0–10.0 | 5.8–6.4 |
Each band shows high, medium or low availability at each pH. See the printable chart below for the full picture.