1、Optimal Water Dilution Ratio for Fertigation of Green Onions

This study aims to calculate parameters like water conservation percentage, water productivity, fertigation efficiency, onion yield, and the economic viability of different treatment strategies.

2、The Effects on Nutrients Uptake and Soil Chemical

Therefore, the main objective of this study was to examine the effects of different basal fertilizers, including inorganic, organic, and compost fertilizers, and the application ratio of basal...

3、The Effects on Nutrients Uptake and Soil Chemical

In order to apply the fertilization manual to the open-field fertigation system, it is necessary to verify the crop productivity. This study was carried out to assess an appropriate nutrient supply ratio for fertigation in open-field green onion (Allium fistulosum L.) cultivation.

Improving water efficiency and crop yield of drip

This study aims to calculate parameters like water conservation percentage, water productivity, fertigation efficiency, onion yield, and the economic viability of different treatment strategies.

Balanced nutrients approach through fertigation on bulb yield

Abstract A field experiment was carried out at Irrigation Water Management Research Centre, Arabhavi, Karnataka, during Kharif 2023-24 to know the effect of application of nitrogen, phosphorus and potassium through fertigation on yield and economics of onion (Allium cepa L.) in shallow black soils.

Korean Journal of Soil Science and Fertilizer

e nutrient supply ratio for fertigation in open- field green onion (Allium fistulosum L.) cultivation. In this study, we compared the crop nutrient uptake and soil chemical properties...

Effect of Different Fertigation Levels on Growth and Yield Parameters

Drip fertigation enables accurate use of measures of water and fertilizer and prevents leaching to deeper soil layers (Hartz and Hochmuth, 1996). Localized nutrient solution application around emit-ters restricts the region of the soil moist surface and inhibits the weathering of the plant leaves.

Effect of Phosphorus Fertigation on Concentration of Soil

In conclusion, this work suggests that the fertigation of P can be a better method to ensure yield of green onion through improved PUE. Dry weight, agronomic efficiency and phosphorus use efficiency of green onion according to phosphorus application ratio by fertigation.

The Effects on Nutrients Uptake and Soil Chemical Properties according

Abstract: In order to apply the fertilization manual to the open-field fertigation system, it is necessary to verify the cropproductivity. This study was carried out to assess an appropriate nutrient supply ratio for fertigation in open field green onion (Allium fistulosum L.) cultivation.

Effect of fertigation on performance of summer onion under different

While, under the application of fertigation through drip for optimum yield of onion recommended 100% RDF and thereafter it is suggested that adopt 80% RDF for reduction of fertigation cost.

Green onions are a common vegetable with high nutritional demands during growth. Fertilization is critical to ensuring healthy development, and selecting appropriate fertilizers and methods maximizes their effectiveness. Below are guidelines and precautions for fertigating green onions:

I. Fertigation Water Dilution Ratio

1. Recommended Ratios

• Dilution Proportion: Follow the manufacturer’s instructions. For example, if 1 packet of fertilizer is recommended per 100 mL of water, use 1,000 mL (1 liter) of water to dissolve 1 packet for a mu (≈666.7 m²) of green onion field.
• Application Steps: Prepare clean water, mix the fertilizer thoroughly according to the ratio, and stir well to avoid sediment or clumping.

2. Adjustments Based on Conditions

• Soil Type:
  • Sandy soil (low fertility retention): Use a thinner solution.
  • Clay soil (high fertility retention): Increase fertilizer concentration slightly.
• Climate:
  • In hot, humid conditions, reduce concentration due to faster microbial decomposition of fertilizers.

3. Application Tips

• Uniform Distribution: Use a sprayer to apply fertilizer evenly around roots for optimal absorption.
• Avoid Leaf Contact: Prevent direct fertilizer contact with leaves to avoid burning. Irrigate immediately after application to minimize leaf irritation.

II. Timing and Methods of Fertigation

1. Ideal Fertigation Timing

• Growth Phase: Apply every 7–10 days during active growth (from planting to harvest).
• Flowering/Fruiting Phase: Increase frequency with nitrogen-rich fertilizers supplemented with phosphorus and potassium to support reproductive growth.

2. Application Methods

• Ditch Method: Sprinkle fertilizer into furrows near roots, then cover with soil. Suitable for large areas. Avoid direct contact with plants.
• Holes Method: Bury fertilizer in small holes around plants. Reduces leaf burn risk. Ideal for small plots.
• Foliar Spray: Dilute fertilizer and spray onto leaves. Quick nutrient supplement, but avoid overapplication to prevent leaf scorching.

3. Precautions

• Avoid Over-Fertilization: Excessive use causes root burn or yellowing. Stick to recommended ratios.
• Timing: Apply in early morning or evening. Avoid midday heat to prevent evaporation. Irrigate after application to protect leaves.

III. Key Considerations for Fertigation

1. Fertilizer Selection

• Combine Organic and Synthetic: Organic fertilizers improve soil structure, while synthetic ones provide rapid nutrients.
• Use Safe, Processed Fertilizers: Choose eco-friendly options (e.g., bio-organic or mineral fertilizers) to minimize environmental impact.

2. Post-Fertilization Management

• Immediate Irrigation: Helps dissolve and distribute nutrients, reducing leaf damage.
• Monitor Plant Response: Watch for leaf burn or yellowing. If observed, halt application and adjust the formula.

3. Soil Testing and Adjustment

• Regular Soil Testing: Analyze fertility levels to tailor applications.
• Dynamic Adjustment: Increase/decrease dosage based on soil tests and growth stages. For example, boost fertilization in low-fertility soils or reduce frequency during rapid growth.

By following these guidelines, you can optimize green onion yields and quality while maximizing economic benefits. Proper fertigation practices balance nutrient supply, soil health, and plant safety.