Calcium Nitrate 15.5-26 — Soluble Ca + N for Fertigation & Foliar

Product overview

Calcium nitrate [Ca(NO3)2] supplies nitrate nitrogen and fully soluble calcium in a single salt — the reference input for protected horticulture, hydroponic nutrient solutions and foliar correction programmes. The 15.5% N and 26% CaO analysis dissolves cleanly in drip tank systems without emitter clogging when properly filtered, making it the primary tool against blossom-end rot in tomatoes, tip burn in lettuce and bitter pit in apples.

Unlike lime or gypsum, calcium nitrate delivers Ca²⁺ ions through irrigation lines within hours of application — critical when physiological disorders appear mid-cycle and soil amendments cannot respond in time. Low insolubles (0.2% max) and controlled moisture (0.5% max) preserve free-flowing granules through humid port handling and long storage in greenhouse warehouses.

Supply origins include integrated nitrate complexes in Europe, the Middle East and Central Asia. Export buyers include greenhouse operators across the Gulf and Levant, soluble-fertilizer blenders in South Asia, and distributor networks serving Mediterranean vegetable, berry and orchard production.

Loading ports & logistics

Calcium nitrate is classified as an oxidiser (UN 1454) and requires dedicated storage away from combustibles. Granular grade moves in moisture-proof packaging to prevent caking during transit through humid ports.

FOB loading at Black Sea chemical terminals and MENA nitrate complexes. Parcel sizes from 1,000 MT (coaster or containerised big-bag lots) to 5,000 MT on multipurpose or container vessels for bagged cargo.

CFR/CIF deliveries to South Asia (Nhava Sheva, Karachi), East Africa (Mombasa), the Gulf (Jebel Ali, Dammam) and Mediterranean horticulture hubs. Bagged shipments in 25 kg PP woven bags with PE liner or 1,000 kg FIBC suit ports without bulk nitrate handling licences.

Typical lead time 12–25 days from contract to loading window, subject to ADR/IMDG documentation and berth scheduling for oxidiser-class cargo.

Packaging & documentation

25 kg PP woven bags with inner PE liner, palletised and stretch-wrapped; 1,000 kg FIBC big-bags for greenhouse complexes with bulk dissolution tanks; or vessel-hold lots in moisture-barrier packaging. Each consignment ships with a mill certificate of analysis (COA), commercial invoice, packing list, bill of lading and certificate of origin. SDS per GHS and transport declarations for oxidiser-class cargo are included. SGS or Bureau Veritas inspection at loading available for LC-backed or first-time contracts.

Fertigation guidelines

In drip systems, calcium nitrate is typically injected at 0.5–2.0 mmol/L depending on crop stage and irrigation water calcium content. Never mix concentrated calcium nitrate with phosphate or sulphate fertilisers in the same stock tank — insoluble precipitates will form. In hard-water regions with bicarbonate above 150 mg/L CaCO3, acidify irrigation water to pH 5.5–6.0 before injection to prevent calcium precipitation in lines.

FAQ

Related products

• Potassium Nitrate Agricultural — chloride-free K + N for A/B fertigation tank B
• Magnesium Nitrate — compatible Mg + N source for hydroponic B-concentrates
• Mono Potassium Phosphate (MKP) — zero-N P + K for flowering-stage fertigation