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Item Number: F2260

Sulfate of Potash (50 lb)

Sulfate of Potash (50 lb)

Organic Standard Fines for Potassium Supplement

This is an all-natural, moderate to fast-release, mined source of potassium (50%) and sulfur (18%) from Ogden, Utah.

  • Average use rate is 1 lb/100 sq ft or 200-500 lb/acre depending on soil analysis and crop.
  • Soil test is recommended for accurate application rate

Sulfate of Potash (SOP), also known as potassium sulfate, is a valuable fertilizer that plays a crucial role in promoting healthy plant growth and enhancing crop yields. Comprising essential nutrients like potassium and sulfur, this mineral-based fertilizer offers numerous benefits to plants, making it a popular choice among gardeners and farmers.

Understanding Sulfate of Potash (SOP):

  1. Composition: Sulfate of Potash primarily consists of two essential plant nutrients – potassium (K) and sulfur (S). The ratio of these nutrients in SOP is typically around 0-0-50, indicating its high concentration of potassium.

  2. Potassium's Role: Potassium is one of the three primary macronutrients required by plants, alongside nitrogen and phosphorus. It is involved in various vital functions, including photosynthesis, enzyme activation, water uptake, and nutrient transport within the plant. Adequate potassium levels in plants result in improved drought tolerance, disease resistance, and overall growth.

  3. Sulfur's Significance: Sulfur, while needed in smaller quantities compared to potassium, is essential for the synthesis of amino acids, proteins, and vitamins within plants. It contributes to root development, enzyme activity, and the formation of chlorophyll, promoting healthy foliage and overall plant vigor.

Uses of Sulfate of Potash:

  1. Fertilization: SOP is primarily used as a high-potassium fertilizer. Its potassium content is beneficial for flowering and fruiting plants, making it particularly valuable for crops like tomatoes, potatoes, peppers, and fruit trees. Regular application of SOP helps improve fruit quality, size, and overall yield.

  2. Soil Amendment: In addition to its fertilizer role, SOP can be used as a soil amendment to correct potassium and sulfur deficiencies in the soil. It helps maintain proper nutrient balance, ensuring that plants have access to the nutrients they need for optimal growth.

  3. Alkaline Soil Treatment: SOP is especially useful in regions with alkaline soils, as it not only supplies potassium but also lowers soil pH levels over time. This is crucial because many plants prefer slightly acidic to neutral soil conditions.

  4. Drought Resistance: Potassium, provided by SOP, plays a significant role in regulating water movement within plants. As a result, it enhances a plant's ability to withstand drought stress, making it an essential nutrient for regions with irregular rainfall patterns.

Advantages of Sulfate of Potash:

  1. High Nutrient Concentration: SOP contains a high concentration of potassium without the additional phosphorus found in some other potassium sources. This makes it suitable for use in situations where phosphorus buildup is a concern.

  2. Low Salt Index: Unlike some potassium fertilizers with a high salt index, SOP has a lower salt index. This makes it less likely to cause soil salinity issues, which can harm plant roots and reduce water uptake.

  3. Compatibility: SOP is compatible with a wide range of fertilizers and can be blended with other nutrients to create custom fertilizer blends tailored to specific plant and soil needs.

  4. Environmental Benefits: SOP's reduced risk of soil salinity issues and lower environmental impact compared to chloride-containing potassium fertilizers make it a more environmentally friendly choice.

Sulfate of Potash (SOP) is a valuable fertilizer and soil amendment that provides essential potassium and sulfur to plants, promoting robust growth, improved fruit quality, and drought resistance. Its low salt index, compatibility with other fertilizers, and environmental benefits make it a preferred choice for both professional farmers and home gardeners looking to optimize their crop and plant health. When used responsibly and according to recommended application rates, SOP can contribute to healthier soils and more bountiful harvests.

Listed for Use in Organic Agriculture by the Organic Materials Review Institute
Quantity Discounts for Sulfate of Potash (50 lb)
Buy 5 for $52.01 each
Buy 10 for $49.27 each
$54.74
Discount applied. Offer ends soon.
Next-day shipping available

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Description

This is an all-natural, moderate to fast-release, mined source of potassium (50%) and sulfur (18%) from Ogden, Utah.

  • Average use rate is 1 lb/100 sq ft or 200-500 lb/acre depending on soil analysis and crop.
  • Soil test is recommended for accurate application rate

Sulfate of Potash (SOP), also known as potassium sulfate, is a valuable fertilizer that plays a crucial role in promoting healthy plant growth and enhancing crop yields. Comprising essential nutrients like potassium and sulfur, this mineral-based fertilizer offers numerous benefits to plants, making it a popular choice among gardeners and farmers.

Understanding Sulfate of Potash (SOP):

  1. Composition: Sulfate of Potash primarily consists of two essential plant nutrients – potassium (K) and sulfur (S). The ratio of these nutrients in SOP is typically around 0-0-50, indicating its high concentration of potassium.

  2. Potassium's Role: Potassium is one of the three primary macronutrients required by plants, alongside nitrogen and phosphorus. It is involved in various vital functions, including photosynthesis, enzyme activation, water uptake, and nutrient transport within the plant. Adequate potassium levels in plants result in improved drought tolerance, disease resistance, and overall growth.

  3. Sulfur's Significance: Sulfur, while needed in smaller quantities compared to potassium, is essential for the synthesis of amino acids, proteins, and vitamins within plants. It contributes to root development, enzyme activity, and the formation of chlorophyll, promoting healthy foliage and overall plant vigor.

Uses of Sulfate of Potash:

  1. Fertilization: SOP is primarily used as a high-potassium fertilizer. Its potassium content is beneficial for flowering and fruiting plants, making it particularly valuable for crops like tomatoes, potatoes, peppers, and fruit trees. Regular application of SOP helps improve fruit quality, size, and overall yield.

  2. Soil Amendment: In addition to its fertilizer role, SOP can be used as a soil amendment to correct potassium and sulfur deficiencies in the soil. It helps maintain proper nutrient balance, ensuring that plants have access to the nutrients they need for optimal growth.

  3. Alkaline Soil Treatment: SOP is especially useful in regions with alkaline soils, as it not only supplies potassium but also lowers soil pH levels over time. This is crucial because many plants prefer slightly acidic to neutral soil conditions.

  4. Drought Resistance: Potassium, provided by SOP, plays a significant role in regulating water movement within plants. As a result, it enhances a plant's ability to withstand drought stress, making it an essential nutrient for regions with irregular rainfall patterns.

Advantages of Sulfate of Potash:

  1. High Nutrient Concentration: SOP contains a high concentration of potassium without the additional phosphorus found in some other potassium sources. This makes it suitable for use in situations where phosphorus buildup is a concern.

  2. Low Salt Index: Unlike some potassium fertilizers with a high salt index, SOP has a lower salt index. This makes it less likely to cause soil salinity issues, which can harm plant roots and reduce water uptake.

  3. Compatibility: SOP is compatible with a wide range of fertilizers and can be blended with other nutrients to create custom fertilizer blends tailored to specific plant and soil needs.

  4. Environmental Benefits: SOP's reduced risk of soil salinity issues and lower environmental impact compared to chloride-containing potassium fertilizers make it a more environmentally friendly choice.

Sulfate of Potash (SOP) is a valuable fertilizer and soil amendment that provides essential potassium and sulfur to plants, promoting robust growth, improved fruit quality, and drought resistance. Its low salt index, compatibility with other fertilizers, and environmental benefits make it a preferred choice for both professional farmers and home gardeners looking to optimize their crop and plant health. When used responsibly and according to recommended application rates, SOP can contribute to healthier soils and more bountiful harvests.

Shipping Information

Ships from Northern CA.

Does not qualify for Flat Rate Shipping.

Shipping Weight: 51.0 lb

Dimensions: 9.5"L x 9.5"W x 14.5"H

Features

    Characteristics

    Organic Status: Approved for Use in Certified Organic Agriculture
    Animal-Based : No
    Fertilizer Type : Powdered/Granulated/Meal
    Major Nutrients : Over 3% Potassium
    Major Nutrients : Sulfur
    Nutrient Release Rate : Immediate (0-1 Months)
    Use as Foliar : No
    Organic Certifier: OMRI

    Use Instructions

    Useful Information

    Guarantee

    View full details

    Customer Reviews

    Based on 4 reviews
    75%
    (3)
    25%
    (1)
    0%
    (0)
    0%
    (0)
    0%
    (0)
    J
    Janice C.
    Delivered as Ordered

    I received the 3 50lb bags as ordered. The outer container (cardboard) was fairly tattered upon arrival, otherwise all was well. It will take a growing season of use before I am able to ascertain the quality, but I do trust this company to provide the product in the quality advertised (e.g., organic and 50% potassium.

    S
    Shoezie
    A Little Goes a Long Way

    Adding this to my soil which tested very low for potassium. Pretty powdery, so wear a dust mask. Very easy to apply and can mix it in water, but need to keep stirring it to keep it in solution. We will see how my plants respond, but I am hopeful.

    J
    John
    Saw quick improvement on my lawn

    After a soil sample, I learned my soil was deficient in potassium. I bought this sulfate of potash to help give my lawn a quick boost. After application, I saw a significant boost in green color in my lawn. I will continue the application every couple of months.

    One important thing to note. This is a very fine granule and doesn't spread using a traditional fertilizer spreader. It's water soluble, but it only works in a tank sprayer. I tried using a hose-end sprayer, but the amount of potash needed did not dissolve in the small hose end tank. My 2 gallon tank sprayer was able to dissolve two pounds of potash without an issue.

    S
    SL
    Good and Easy to Use

    Easy to pour out and use, used it on in a movable high tunnel that has never had any fertilizer application (outside of some compost). I'm excited to see this season develop. Only complaint is that the box it came in was squashed and some of the SOP was coming out.

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