Fertilization Schedule

A well-structured fertilization program is critical for achieving optimal onion yields. Follow these steps for effective nutrient management:

• Basal Dressing:

• Apply Compound C at 600 kg per hectare before planting.

• Incorporate it lightly into the soil at a rate of 60g/m² to ensure even distribution and proper root uptake.

• Top Dressing:

• Ammonium Nitrate (AN): Apply at 200 kg per hectare in a split application:

• Week 3 after transplanting: Broadcast at 30g/m² followed by light irrigation.

• Potassium Nitrate (KN):

• Week 7 after transplanting: Broadcast at 30g/m² followed by light irrigation.

Foliar Fertilization

Foliar sprays enhance nutrient uptake and supplement soil-applied fertilizers:

• Wuxal Macromix: Spray at 16ml/16L every 2 weeks during Weeks 3, 5, and 7.

• Wuxal Calcibor: Spray at 16ml/16L every 2 weeks during Weeks 9, 11, and 13.

Key Management Tips

• Use a split application approach for top dressing to ensure consistent nutrient availability throughout the crop's growth cycle.

• Irrigation: After broadcasting fertilizers, light irrigation ensures nutrients dissolve and penetrate the root zone efficiently.

• Complementary Fertilization: Soil-applied fertilizers form the primary nutrient source, while foliar fertilizers enhance and correct specific deficiencies. Never replace soil-applied fertilizers with foliar options.

General Crop Management

• Regular weeding and pest control are essential for healthy crop growth.

• Monitor crop development and adjust fertilizer applications based on soil testing and plant needs.

• Practice crop rotation to maintain soil health and minimize disease risks.

By adhering to this fertilization and management plan, you can maximize onion yields under rain-fed conditions.