Hektar

Symptoms of Potassium Deficiency in Peppers:

1. Older Leaves Are Affected First:

   • Leaf edges turn brown or scorched (marginal necrosis).
   • Yellowing occurs between leaf veins (interveinal chlorosis).
   • Affected leaves may curl or become brittle.

2. Poor Growth:

   • Plants grow slowly and appear weak.
   • Shoots and fruits develop more slowly.

3. Poor Fruit Quality:

   • Fruits may be deformed, smaller, and less juicy.
   • The skin of the fruit may become thin and prone to cracking.

4. Reduced Resistance:

   • Plants are more susceptible to diseases and water stress.

Causes of Potassium Deficiency:

• Potassium-poor soils (e.g., sandy soils).
• Improper soil pH (either too acidic or too alkaline).
• Excess nitrogen or calcium interfering with potassium uptake.
• Overwatering or poorly drained soils, which leach potassium from the soil.

Solutions for Correcting Potassium Deficiency:

1. Potassium Fertilization:

   • Use potassium-rich fertilizers such as:
     • Potassium sulfate (K₂SO₄): Suitable for rapid correction of deficiency.
     • Potassium nitrate (KNO₃): Ideal for foliar feeding or direct soil application.

2. Foliar Fertilization:

   • Apply potassium-based solutions directly to leaves for quick correction.
   • A concentration of 1-2% potassium nitrate solution is generally recommended.

3. Soil Improvement:

   • Add compost or well-decomposed manure to enhance nutrient retention.
   • Adjust soil pH with amendments such as lime (for acidic soils) or sulfur (for alkaline soils).

4. Proper Irrigation:

   • Avoid overwatering to prevent potassium leaching.

Prevention:

• Regularly test soil for potassium levels and pH balance.
• Practice crop rotation and ensure balanced nutrient application.
• Combine fertilization with efficient irrigation methods (e.g., drip irrigation) to optimize potassium uptake.