1、Granulated Potash: Comprehensive Guide to Benefits, Production, and

In soils with medium to low potassium content, 10-15kg of potassium sulfate is used as base fertilizer per mu, and 15-20kg is applied during the flowering and bolling period.

2、The Specific Use Methods of Potassium Sulphate

The amount of seed fertilizer used per mu is 1.5-2.5kg, which can also be made into 2% - 3% solution and used as external topdressing. The specific use methods of potassium sulphate.

3、How to Use Potassium Sulfate Effectively and Potential Challenges

When using potassium sulfate in farming, it is important to follow proper dosage recommendations to avoid over-application and ensure optimal plant growth. A typical application rate is 100-200 kg per hectare, depending on soil nutrient levels and the specific crop requirements.

4、News

When potassium sulfate is used as a base fertilizer in dry fields, the soil must be deeply applied to reduce the fixation of potassium crystals and facilitate the absorption of crop roots and increase the utilization rate.

Potassium sulfate: uses, dosage, and benefits in plants

Potassium sulfate provides K and S without chlorides, better for sensitive crops and salinity management. It optimizes fruit quality and preservation, improves resistance to drought and cold, and enhances nitrogen efficiency. Apply from setting to pre-harvest, with fractional doses and pH/EC control in fertigation.

How to apply potassium sulfate?

Potassium sulfate can be used as a base fertilizer and topdressing, as well as as as seed fertilizer and root dressing. Apply 15-20 kilograms of base fertilizer per mu, deeply cover with soil, and use 1.5-2.5 kilograms per mu as seed fertilizer; The optimal concentration for root dressing is 2-3%.

How To Use Base Fertilizer and apply it to the coprs? 2026

In this article, we will introduce how to apply base fertilizer. It will specifically involve how to use it, when to use it, and how much to use each time....

Best Practices for Applying Potassium Sulfate Fertilizer

Rate: Mix 200–300 grams of potassium sulfate in 100 liters of water. Spray until leaves are moist but not dripping—focus on undersides, where stomata (absorption pores) are most dense. Note: Use foliar sprays sparingly (2–3 times per season) as a supplement, not a replacement for soil applications.

Method for applying base fertilizer in greenhouse

Generally 30% of the total nitrogen fertilizer, 80% of the phosphate fertilizer, and 50% of the potassium fertilizer are used as the base fertilizer, and the biological fertilizer and the micro-fertilizer are all applied as much as possible.

Fertilizer application rate and nutrient use efficiency in Chinese

The main chemical K fertilizer from 1993 to 2010 was potassium sulfate, accounting for more than 64.00 % of base and top-dressing K fertilizers. From 2011 to 2020, the frequency of use of water-soluble fertilizers increased, accounting for 13.76–25.00 % of top-dressing K fertilizer.

Potassium sulfate is a common chemical fertilizer that provides essential potassium for plant growth. In agricultural production, proper application of potassium sulfate can promote crop growth and increase yields. Below is a detailed guide on the appropriate dosage of potassium sulfate as a base fertilizer per mu (a Chinese unit of area, approximately 0.067 hectares).

1. Determine Crop Type and Growth Stage

Before applying potassium sulfate as a base fertilizer, it is crucial to understand the crop type and growth stage. Different crops have varying potassium requirements. For example, gramineous crops (e.g., wheat, corn) typically require more potassium, while leguminous crops (e.g., soybean, mung bean) need less. Additionally, crop growth stages affect their potassium absorption capacity, so dosages should be adjusted accordingly.

2. Refer to Fertilizer Labels and Recommended Dosages

When purchasing potassium sulfate, carefully check the label for recommended usage. Different brands may suggest varying dosages. Consult local agricultural extension departments or experts to understand soil and crop-specific needs.

3. Calculate the Dosage

Based on crop type, growth stage, and label recommendations, calculate the required amount. Generally, 5–10 kg of potassium sulfate per mu is recommended. Adjust this dosage for less fertile soils (increase) or more fertile soils (decrease).

4. Application Methods

• Broadcast and Tillage: Evenly spread potassium sulfate on the soil surface, then till to mix it thoroughly.
• Spray Solution: Dissolve the fertilizer in water, spray evenly, and till.
• Avoid Direct Root Contact: Prevent direct application near crop roots to avoid fertilizer burn.

5. Timing of Application

• Apply during early to mid-growth stages.
• For spring-planted crops, broadcast after sowing and till within one week.
• For autumn harvests, incorporate potassium sulfate into the final topdressing.
• Avoid applying during hot weather to prevent reduced solubility and uptake.

6. Frequency of Application

• Apply every 7–10 days during early and mid-growth stages.
• Reduce frequency during late stages.
• Supplement with additional topdressing if needed.

7. Evaluate Fertilizer Effectiveness

Monitor crop growth and soil conditions post-application. Signs of stunted growth or yellowing leaves may indicate insufficient fertilization or poor-quality products. Adjust dosages or switch to higher-quality fertilizers if necessary. Also, check soil pH and moisture levels to ensure optimal conditions.

8. Key Considerations

• Avoid Overapplication: Excessive use can lead to soil salinization, harming root development.
• Combine with Other Fertilizers: Pair with nitrogen and phosphorus fertilizers to enhance efficiency.
• Avoid Acid Fertilisers: Mixing with acidic fertilizers reduces potassium sulfate’s solubility and effectiveness.
• Environmental Protection: Prevent pollution by avoiding direct root application and properly disposing of residue.

Rational use of potassium sulfate as a base fertilizer is critical for improving crop yield and quality. Tailor dosages and methods to crop needs, soil conditions, and environmental factors. Regularly assess results and prioritize sustainable practices to ensure long-term agricultural productivity.