Sulfur fertilizers – optimize nitrogen uptake and protein building
Sulfur and sulfate fertilizers replenishing sulfur — an element essential for efficient nitrogen use and protein building in plants.
Products in this category
SB 90
SB 90 is a granulated mineral fertilizer supplying plants with 90% elemental sulfur of natural origin. Bentonite accelerates granule breakdown in moist soil, while varied particle sizes ensure gradual, long-lasting nutrient release.
Discover SB 90Frequently asked questions
Find the key information about this fertilizer group. Match the product and rate to your soil test.
What are the main benefits of sulfur fertilizers for crop health?
Sulfur supports efficient nitrogen use and the formation of proteins, amino acids and chlorophyll. SB 90 supplies 90% elemental sulfur and uses bentonite to help the granule break down; it should be applied when a soil or crop need has been identified.
How do I choose the right type of sulfur fertilizer for my soil?
Start with a soil and crop assessment, then consider the sulfur form and release pattern. SB 90 supplies elemental sulfur that microorganisms convert gradually into plant-available sulfate; the correct choice and rate depend on soil moisture, crop demand, timing and the current label.
How do sulfur fertilizers compare in price and effectiveness?
The Bluebird content does not publish a price comparison, so no reliable price ranking can be given. Effectiveness depends on the sulfur form, soil conditions, moisture, microbial activity, crop demand and application rate; compare current offers and documentation for the specific products.
Why is sulfur essential for efficient nitrogen use and protein building in plants?
Sulfur participates in the formation of sulfur-containing amino acids and proteins and supports efficient use of nitrogen. Bluebird describes regular SB 90 use as supporting nitrogen use and the synthesis of proteins, amino acids and chlorophyll; the response depends on whether the crop is actually sulfur-limited.
When is the best time to apply granulated elemental sulfur on field crops?
Apply elemental sulfur early enough for soil microorganisms to convert it into sulfate before peak crop demand, while considering soil moisture and the crop plan. There is no single date for every crop; use the current SB 90 label and an agronomic recommendation rather than a calendar-only rule.