1、Fertilizing onions: expert tips to get bigger crops

You can also use organic fertilizers, such as blood meal and bone meal granular fertilizers, which you can both get from Burpee. While the onion is growing, consider mulching around the plants with compost, grass clippings, well-rotted manure, or straw to add extra nutrients as it decomposes.

2、Guide to Fertilizing Your Green Onion Plant

There are many types of fertilizers available on the market, but not all are suitable for green onions. When choosing a fertilizer for your green onion plant, look for a balanced fertilizer with equal amounts of nitrogen, phosphorus, and potassium (NPK).

3、What fertilizer is good for growing green onions?

In order to increase the yield of green onions, it is still necessary to apply fertilizer in time, mainly applying compound fertilizer containing nitrogen, phosphorus and potassium.

4、What Fertilizer Do I Use for Onions? Grow Big Onions

With the increasing awareness of sustainable farming practices, the importance of using the correct fertilizer for onions cannot be overstated. In this comprehensive guide, we’ll explore the various types of fertilizers suitable for onions, their benefits, and potential challenges.

5、How to Fertilize Onion Plants: A Step

Proper fertilization is crucial to ensure healthy growth, robust yields, and high-quality bulbs. This comprehensive guide will walk you through the process of fertilizing onion plants at each growth stage, from planting to harvesting.

Green Onion

By being mindful of these special considerations, you can optimize your fertilization strategy for healthier green onions. Next, let’s explore the application methods that will help you put this knowledge into practice.

15 Best Fertilizers for Onions Farm [Organic & Inorganic]

Yes, you can use a combination of organic and inorganic fertilizers for onions. Organic fertilizers improve soil health and provide slow-release nutrients, while inorganic fertilizers offer precise nutrient control and immediate availability.

How to Fertilize Onions: When, How, and What to Use

To ensure a good harvest of large and juicy bulbs, it is important to fertilize onions correctly. Fertilizing onions is simple, but it does require some planning and attention. This guide will cover everything you need to know about when, how, and what to use to feed your onion plants.

What Kind of Fertilizer for Onions? Boost Onion Growth

Whether you are a commercial farmer or a backyard enthusiast, this comprehensive guide will help you make informed decisions about the kind of fertilizer to use on your onion crops.

7 Best Onion Fertilizers for 2025

It can be a little overwhelming when trying to choose the best onion fertilizer. Here is our full guide to fertilizing onions with a few helpful growing tips.

Green onions are a common vegetable with relatively high nutritional demands during their growth. Chlorine-containing fertilizers are often used to improve soil nitrogen levels and promote plant growth. their use must be cautious, as excessive application can lead to soil salinization, nutrient imbalances, and negatively impact the normal growth and quality of crops like green onions.

1. Chloride Ions in Soil

• Under natural conditions, chloride ions in soil primarily originate from atmospheric water vapor and groundwater, entering the soil system through precipitation and irrigation.
• When soil moisture evaporates, residual chloride ions combine with soil cations (e.g., sodium ions) to form soluble chlorides such as sodium chloride and calcium chloride. This process is called salinization.
• Soil salinization deteriorates soil structure, reduces water-holding capacity and air permeability, hindering root development and nutrient uptake.
• Excessive chloride ions may also react with other metal ions in the soil, forming insoluble precipitates and exacerbating salinization.

2. Mechanism of Chlorine-Containing Fertilizers

• These fertilizers typically contain high levels of essential nutrients like nitrogen and potassium, which are critical for plant growth.
• When applied, nutrients like nitrogen and potassium are absorbed by plants.
• During growth and metabolism, plants excrete some nutrients while storing others internally to support energy and material needs.
• Additionally, chlorine-containing fertilizers can raise soil pH, inhibiting pathogenic microorganisms and reducing disease risk.

3. Impact on Plants

• Excessive use may cause salinization, damaging root development and nutrient absorption.
• Long-term overuse can disrupt soil nutrient balance, stunting plant growth.
• Chloride ions may form insoluble compounds with metal ions, worsening salinization.
• Excessive chloride can also disrupt soil microbial communities, reducing biological activity and harming plant health.

4. Recommendations for Rational Use

• Apply chlorine-containing fertilizers based on soil conditions and crop needs. Generally, avoid exceeding 50 kg per mu.
• Conduct pre-application soil tests to assess pH, salinity, and nutrient levels, adjusting fertilization strategies accordingly.
• Control timing and methods to prevent overapplication. Combine organic and chemical fertilizers for balanced nutrition.
• After application, promptly remove residual fertilizers to minimize environmental and crop risks.

5. Alternatives to Chlorine-Containing Fertilizers

• Use natural organic fertilizers (e.g., animal manure, green manure) to improve soil structure and fertility.
• Implement crop rotation to reduce salinization risks by alternating crop types.
• Adopt agricultural practices like deep soil tillage and phosphorus-potassium supplementation to enhance soil health and yields.

6. Scientific Research and Promotion

• Strengthen research on the effects of chlorine-containing fertilizers to understand their mechanisms.
• Validate applications through experiments and field trials across soil types and crops.
• Develop science-based guidelines to guide farmers and expand adoption.
• Educate farmers on rational fertilization to promote sustainable practices.

while chlorine-containing fertilizers can meet nitrogen demands for crops like green onions, excessive use harms soil health. Cautious application and exploration of eco-friendly alternatives are recommended for sustainable agriculture.