Comparing 0 Product(s)
View Product(s) Remove All

Spring Greens Fertility with Ammonium Sulfate

When considering fertilizer options this spring for your putting greens, look no further than ammonium sulfate. Delivering nitrogen in a plant-available form, ammonium sulfate-based fertilizers allow turfgrass to absorb nutrients more quickly and rely less on soil temperature and soil microbial activity compared to other nutrient sources.

Ammonium Sulfate vs. Urea
Providing plant-available nitrogen mostly in the form of NH4+ (ammonium) and NO3- (nitrate), ammonium sulfate fertilizers deliver ammonium directly. This is in contrast to urea, which requires soil enzymatic reactions for its nitrogen to become ammonium. Those reactions are dependent on warmer soil temperatures, which cannot always be relied on in spring.

Urea can also volatilize as NH3 gas before being converted into ammonium. Furthermore, the ammonium of ammonium sulfate has a positive charge and is better held on soil colloidal surfaces.

Ammonium Sulfate Solutions
We are proud to offer many fertilizers utilizing ammonium sulfate as the nitrogen source, including both granular and foliar solutions.

The latest innovation to join our CarbonCoat™ line of humic-coated fertility products is Humic Coated Ammonium Sulfate (HCAS™). HCAS (20-0-0-23S) combines ammonium sulfate granules and humic acid to create an ideal nitrogen source for the cooler months of the growing season, when green-up and growth are crucial.

Combine cool-season HCAS applications with summer applications of Humic Coated Urea (HCU®) (44-0-0) to deliver nutrition and humic acid throughout the growing season. Available in both soluble and spreadable formulations, HCAS can be used on both cool and warm-season turf species.




Our line of Contec DG granular fertilizers also includes a number of ammonium sulfate-based solutions perfect for spring applications on greens.

Contec DG 6-0-12 (100% AMS)


Contec DG 7-14-14 (70% AMS, with MUtech® slow-release N)

Contec DG 12-3-12 (100% AMS)

Contec DG 12-24-8 (50% AMS, MUtech® slow-release N)

Contec DG 14-7-14 (40% AMS)

Contec DG 18-9-18 (23% AMS)


© 2023 The Andersons, Inc. All Rights Reserved. The Andersons logo is a registered trademark of The Andersons, Inc. CarbonCoat and HCAS are trademarks of The Andersons, Inc. HCU and Contec DG are registered trademarks of The Andersons, Inc.

Contact Us!

With a focus on quality, service, and technology, the products we bring to market are designed to make work easier for those who use them. From a broad range of fertilizers, control products, and soil enhancers, to patented products and delivery systems, we’re committed to delivering next-generation solutions with the highest level of quality and customer service in the industry.

Have a question?  Complete the form and a representative will connect with you shortly.

aerification guide
  • Featured Article

    Take Back Control: How to Prevent Goosegrass and Crabgrass on Putting Greens

    Goosegrass and crabgrass are grassy annual weeds that germinate in the late spring and...

  • Featured Article

    SmartPhos® DG: Next-Level Phosphorus Control

    Phosphorus products are typically categorized one of two ways — as rock phosphates, which...

  • Featured Article

    A+ Rewards

    2024-2025 PROGRAM ENDED 5/31, AND THE SUBMISSION PORTAL IS NOW CLOSED. Check back in...

  • Featured Article

    Keep Greens Clean this Spring with CastAway™ DG

    With spring weather fast approaching, planning is key to ensuring your greens are ready...

  • Featured Article

    Spring Nutrient Solutions

    Golfers love early spring openings, but your turf doesn't necessarily share their enthusiasm. If...

  • Featured Article

    It's Aerification Season. Are You Ready?

    The process of mechanical aerification is a necessary management tool to improve airflow, nutrient...