Many farms in Egypt suffer from fertilizer waste and nitrogen loss through volatilization and leaching. Here, smart slow-release fertilizers emerge as a scientific solution that reduces application rates while extending the availability of nutrients around the root zone.
What Are Smart Fertilizers?
- Polymer- or sulfur-coated granules that gradually release nitrogen and potassium over time.
- Compatible with drip irrigation systems and help reduce runoff and soil salinity.
Results of a Simplified Field Trial
- Target Crop: Open-field tomatoes in the Nile Delta.
- Treatment: Applying 60–70% of the conventional fertilizer rate using coated ammonium nitrate combined with precise foliar fertilization.
- Result: Yield increased by 12–18%, fertilizer consumption decreased by 25–30%, with improved fruit weight and uniformity.
Why Does Productivity Increase?
- Nutrient release matches the plant growth stages.
- Improved root absorption and reduced fertilizer loss.
- Lower salt stress around the root zone.
Practical Application Steps for Farmers
- Conduct soil and water analysis before the growing season.
- Start with small doses during irrigation, then gradually increase them.
- Monitor electrical conductivity (EC) and pH levels weekly.
- Incorporate calcium and magnesium in calculated doses to improve fruit firmness.
Frequently Asked Questions
Is the cost higher? Yes, initially, but it is compensated by reduced fertilizer use and increased returns.
Is it suitable for all crops? It is suitable for vegetables, fruits, and corn, with adjustments to the fertilization program as needed.