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Adjusting Soil pH with Amendments
🌿 Adjusting Soil pH with Amendments
📊 pH Adjustment Guide:
| Current pH | Target pH | Amendment | Amount per 100m² |
|---|---|---|---|
| 5.0 | 6.5 | Lime (Calcitic) | 5-8 kg |
| 5.5 | 6.5 | Lime | 3-5 kg |
| 6.0 | 6.5 | Lime | 1-2 kg |
| 7.5 | 6.5 | Elemental Sulfur | 1-2 kg (apply 3 months before planting) |
| 8.06.5Sulfur + Compost2-3 kg sulfur
+ 10kg compost
🌟 Natural pH Adjustment Methods:
📖 Automated pH Correction Code:
void recommendPHTreatment(float pH, String cropType) {
float target = 6.5;
// Adjust target based on crop
if (cropType == "Potato") target = 5.8;
if (cropType == "Blueberry") target = 4.8;
if (pH < target - 0.5) {
float limeNeeded = (target - pH) * 2.5; // kg per 100m²
Serial.printf("Add %.1f kg lime per 100m²\n", limeNeeded);
Serial.println("Apply lime 3-6 months before planting");
}
else if (pH > target + 0.5) {
float sulfurNeeded = (pH - target) * 1.5;
Serial.printf("Add %.1f kg sulfur per 100m²\n", sulfurNeeded);
Serial.println("Apply sulfur 3-4 months before planting");
}
else {
Serial.println("✅ pH is optimal - no adjustment needed");
}
}
📖 Case Study - Ethiopia:
A coffee farmer had pH 5.0 soil (too acidic). Following IoT monitoring:
💡 Key Takeaways:
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