UNSPSC 10171803: Limestone fertilizer

Agricultural lime, also called aglime, agricultural limestone, garden lime or liming, is a soil additive made from pulverized limestone or chalk. The primary active component is calcium carbonate. Additional chemicals vary depending on the mineral source and may include calcium oxide. Unlike the types of lime called quicklime (calcium oxide) and slaked lime (calcium hydroxide), powdered limestone does not require lime burning in a lime kiln; it only requires milling.

UNSPSC 10171803 Limestone fertilizer, a Commodity code, sees minimal recent state and local procurement activity, with no opportunities in the posted dataset directly soliciting limestone fertilizer or lime-based soil amendments for municipal operations. The code represents specialized soil conditioning and pH-management products—typically crushed limestone or hydrated lime—used by public works, parks, water utilities, and grounds-maintenance operations to neutralize acidic soils, stabilize unpaved surfaces, and improve turf establishment. However, recent state and local opportunities tagged under or near this code show a pattern of scope mismatch: posted solicitations cite soil remediation, environmental excavation, soil stabilization grouting, grounds maintenance chemicals, and erosion control services that involve earthwork, geotechnical injection, or mulch application rather than limestone fertilizer procurement. Sacramento County's grounds maintenance chemicals RFB (RFB #2023-RFB-0171, due June 1, 2023) is the closest proxy, covering herbicides, pesticides, fertilizers, and seeds across approximately 80 line items with an estimated annual spend of $435,000 for department-level users including Parks and Recreation and airports. The Orlando soil stabilization grouting IFB (IFB26-0227, due October 22, 2026) involves pressure injection and grout piping—a service distinct from fertilizer supply.

The code shows activity primarily among county public works departments and regional park authorities in California and Florida. Absent direct limestone fertilizer solicitations in the current dataset, the market for this commodity through state and local procurement appears either consolidated under broader chemical or materials supply contracts, bundled with grounds-maintenance chemicals through cooperative purchasing vehicles, or handled through standing MRO supply agreements rather than dedicated competitive bids. Business development focus should track Sacramento County's materials procurement cycles and inquire directly into county parks, water utilities, and environmental remediation programs to identify off-cycle or blanket-purchase opportunities where limestone and soil amendments are ordered incrementally.