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SOP fertilizer, or sulfate of potash, is a high-quality potassium fertilizer used in agriculture to enhance plant growth and improve crop yield. It is primarily composed of potassium sulfate, which provides essential potassium and sulfur nutrients to plants. SOP is especially beneficial for crops sensitive to chloride, making it a preferred choice for various high-value crops such as fruits, vegetables, and nuts.
| Chemical formula | K2SO4 |
| Potassium content | up to 50% K2O |
| Sulfur content | up to 18% S |
| Granule size | 2 to 4 mm |
| Solubility | Highly soluble in water |
When selecting SOP fertilizer, buyers should consider the specific potassium and sulfur needs of their crops. It's important to specify the desired granule size and the purity of the product, as well as any organic certifications if applicable. Quantities should also be determined based on the size of the agricultural operation and the specific crop requirements.
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SOP fertilizer is used to provide potassium and sulfur to crops, particularly those sensitive to chloride.
Yes, SOP fertilizer can be suitable for organic farming if it meets organic certification standards.
SOP contains no chloride, making it better for chloride-sensitive crops, while MOP (muriate of potash) contains chloride.
Crops such as fruits, vegetables, and nuts benefit significantly from SOP due to their sensitivity to chloride.
Application rates vary by crop but typically range from 100 to 300 kg per hectare.
Yes, SOP can be applied in the fall as part of pre-planting soil preparation.