UNSPSC 10171611: Calcium fertilizer

A fertilizer containing calcium which promotes the condensation reaction of the soil colloid, neutralizes acidity, and encourages active breeding of useful microbes.

UNSPSC 10171611 Calcium fertilizer is a Commodity code that encompasses granular and liquid fertilizer products—including ammonium sulfate, urea, diammonium phosphate (DAP), potash, micronutrients, and specialized blends—purchased by counties, municipalities, state agricultural departments, and special districts for turf maintenance, parks operations, and agricultural research. State and local procurement offices solicit these products primarily through informal written quotes (IWQs), invitations for bid (IFBs), and requests for proposal (RFPs) to supply ongoing parks and recreation turf care, vegetation management across municipal facilities, and agricultural support programs. The buying bodies span county parks and recreation departments, county stormwater and vegetation management divisions, state departments of agriculture managing research farms, and municipal recreation authorities. Fertilizer procurement typically requires vendors to meet modest business experience thresholds (often two to three comparable contracts), maintain general liability and workers' compensation insurance, provide delivery on an F.O.B. Destination basis, and certify non-debarment and compliance with state employment verification and drug-free workplace standards. Local vendor preferences and small business enterprise set-asides appear in some jurisdictions but are not universal across the code.

Recent activity spans Georgia, Florida, and Illinois. Gwinnett County, Georgia issued an IWQ in May 2026 for 840 bags of 34-0-0 ammonium sulfate (840 bags across 15 parks locations, due May 20, 2026); Pasco County, Florida posted an IFB in May 2026 for as-needed herbicides, fertilizers, and pesticides with a contract term through September 2029 and optional two-year extensions, due June 16, 2026; the Illinois Department of Agriculture issued small-purchase solicitations in March 2026 for fertilizer, seed, and chemical application services at two state research farms (Henry White Farm and Zell Farm), both with March deadlines; and White County, Georgia solicited an RFP for chemical application services at three parks facilities, due April 2, 2026. Palm Beach County, Florida maintains an open pre-qualification list for chemicals and fertilizers (RPQ posted January 2026, due March 13, 2028) with an anticipated contract value of $900,500 over sixty months. Pinellas County, Florida's April 2026 aerial larvicide application ITQ ($400,000 estimated annual value) sits outside the core calcium fertilizer scope but reflects broader county vegetation and pest management procurement activity touching the family.