Adjust Soil pH and Optimize Potassium Levels

To correct the nutrient imbalance and pH levels inhibiting potassium uptake, follow these steps:

1. Test and Adjust pH: If the soil pH is above 6.7, apply elemental sulfur or acidic organic amendments according to soil test recommendations to lower the pH to the optimal range of 6.4–6.7.
2. Supplement Potassium: Incorporate potassium-rich fertilizers, such as potassium nitrate or sulfate of potash, into the soil based on the specific dosage requirements identified in your soil test.
3. Manage Irrigation pH: If utilizing drip irrigation, ensure the water pH is maintained between 6.2 and 6.5 to maximize the efficiency of potassium uptake by the root system.
4. Verify Nutrient Status: Conduct tissue testing starting from the first flower cluster to ensure that potassium, calcium, and magnesium levels have stabilized within the recommended range for your tomato cultivar.

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