1、Choosing the Right Fertilizer for Acidic Soils

Recommendation: In already acidic soils, avoid excessive use of ammonium-based fertilizers unless liming is applied regularly. Using nitrate forms or balanced nitrogen sources helps manage pH better.

2、Which Fertilizer Increases the Acidity of Soil?

Combine with other amendments: Mixing acidic fertilizers with other amendments, such as lime or calcium carbonate, can help balance soil pH levels and promote healthy plant growth.

3、Fertilizers and Soil Acidity

– Nitrate-based products are the least acidifying of the nitrogen fertilizers, while ammonium-based products have the greatest potential to acidify soil.

Which Fertilizers Are Acidic? (3 Things To Know)

Ammonium-based fertilizers (such as ammonium nitrate, ammonium sulfate, and urea) are acidic. Sulfur-based fertilizers (such as elemental sulfur, iron sulfate, and aluminum sulfate) are also acidic. Natural acidic fertilizers (such as peat moss, compost, and manure) acidify soil as they decompose.

Which Fertilizer Increases The Acidity Of Soil? – And How To Use Them

Acidic fertilizer – using an ammonium-based fertilizer in your lawn is also good for increasing the acidity of the soil. Ammonium nitrate and ammonium sulfate are very effective in providing nutrients and increasing the acidity of the soil.

Best Fertilizers For Acid

In this article, we will explain how to apply these fertilizers for best results, the relationship between acidic soils and plant health, and how to reduce the acidity of the soil.

What is the best fertilizer to lower pH?

For acidic soil, it is recommended to apply lime before fertilizer, whereas for nutrient-deficient soil, fertilizer should be applied before lime. Seed application should follow either one or both treatments.

Which Nitrogen fertilizer is best suited in acidic soil?

In practice, it is recommended that acidic soils be limed (eg by use of dolomitic limestone) so as to raise the soil pH to moderate levels that are suitable for most crops.

Which Fertilizer Increases the Acidity of Soil Experts Reveal

For crops that require acidic soil, such as blueberries and azaleas, fertilizers that acidify the soil, such as ammonium nitrate and elemental sulfur, can be used.

Which Fertilizers Produce Acidity in Soil? A Scientific Approach with

Understanding which fertilizers lower soil pH can help farmers and gardeners manage soil conditions more effectively. This article explores which fertilizers produce soil acidity, how they work, and which Olimpum fertilizers are most suitable for acidifying soils.

Acidic soil, defined by a pH value below 6.5, often lacks essential nutrients, particularly minerals like calcium and magnesium. In agricultural production, applying appropriate fertilizers can effectively enhance soil fertility and crop yields. Below are types of fertilizers suitable for acidic soils and their application methods:

1. Lime (Quicklime or Slaked Lime): Lime is a commonly used alkaline substance that raises soil pH. It neutralizes soil acidity by reacting with acidic components, improving soil structure. Lime also increases calcium content, crucial for plant growth. When applying lime, mix it with water first, spread evenly over the soil surface, and cover with a thin layer of soil to prevent water evaporation.

2. Sulfur: Sulfur, a common organic fertilizer, reduces soil acidity by raising pH. Through combustion, it produces sulfur dioxide gas, which reacts with acidic soil components to form stable sulfates, lowering acidity. Additionally, sulfur has antibacterial properties, reducing pathogenic microorganisms and promoting plant growth. When applying sulfur, mix it into a paste with water, spread evenly, and cover with a thin layer of soil.

3. Phosphate Fertilizers: Phosphate fertilizers are among the most widely used nitrogen sources in acidic soils. They help plants absorb phosphorus and potassium, improving crop yield and quality. By reacting with acidic soil components, they reduce acidity, making the soil more plant-friendly. When applying phosphate fertilizers, dissolve them in water, spread evenly, and cover with a thin layer of soil.

4. Organic Fertilizers: Organic fertilizers, such as animal manure, compost, and green manure, are excellent for acidic soils. Rich in essential nutrients like nitrogen, phosphorus, potassium, and trace elements, they provide nourishment while improving soil structure and bioactivity. When applying organic fertilizers, mix them with water, spread evenly, and cover with a thin layer of soil.

5. Microbial Fertilizers: Microbial fertilizers, made from beneficial organisms like rhizobia and nitrogen-fixing bacteria, convert atmospheric nitrogen into plant-absorbable forms. They also increase beneficial microbial populations, enhancing ecosystem stability. When applying microbial fertilizers, mix with water, spread evenly, and cover with a thin layer of soil.

6. Controlled-Release Fertilizers: These fertilizers contain high-concentration nutrients in solid or liquid form, releasing slowly over time. Ideal for acidic soils requiring sustained nutrient supply—especially in dry regions or long-term cultivation—they meet plants’ needs at different growth stages. When applying controlled-release fertilizers, mix with water, spread evenly, and cover with a thin layer of soil.

7. Foliar Spraying: This technique involves applying nutrients directly to plant leaves. It quickly replenishes essential elements, particularly during early growth or drought. Nutrients like nitrogen, phosphorus, potassium, and trace elements can be used. When foliar spraying, choose appropriate concentration and frequency to avoid harming plants.

when fertilizing acidic soils, select fertilizer types and methods based on soil pH, crop requirements, and local climate. Reasonable application is critical to avoid soil pollution and resource waste.