Controlled & Slow Release Fertilizers
Controlled release products are bought by release curve, not by grade. Longevity is quoted at a reference soil temperature and shifts materially in warmer climates, so a 6-month product can exhaust in four. Coating technology also carries a regulatory dimension as biodegradability requirements tighten in several markets.
Does quoted longevity apply in a hot climate?
No. Release accelerates with temperature. The RFQ asks suppliers to state the curve at your site temperature, not only at the reference condition. Yes, but blending and spreading must be specified to avoid coating damage that turns controlled release into an uncontrolled dump.
Availability and the ability to trade depend on the law of each origin, destination and transit country and on the relevant permits and approvals. SeedMatch Group is not a manufacturer, importer, exporter, seller or regulatory approver; requests are reviewed by our team before any commercial introduction. Each participant is responsible for the requirements of its own role under applicable law: suppliers for their products in the origin and destination countries, buyers for their own import permissions and due diligence. We do not guarantee any supplier's compliance. Participant responsibilities · Regulation & restricted items
Commercial applications
- Container nursery and propagation production
- Turf, landscape and high-value perennial plantings
- Single-application programmes where re-entry is costly
- Nitrogen-loss reduction on leaching-prone soils
Who procures this
- Nurseries and propagation facilities
- Plantation and perennial crop estates
- Operations under nitrate-leaching regulation
Why it matters commercially
One incorporated application can cover a full production cycle, cutting labour and machinery cost.
Metered release reduces leaching and volatilisation losses where regulation or water cost makes them expensive.
A stated release curve lets the grower model nutrient availability against the crop demand curve.
What a complete RFQ specifies
Technical specification lines
- Longevity
- Months at a declared reference soil temperature, plus curve at site temperature
- Coating technology
- Polymer, resin, sulphur or hybrid; biodegradability status
- Release profile
- Percentage released at 7, 30, 90 days under standard test
- Physical integrity
- Coating damage tolerance in blending, transport and incorporation
- Grade
- N-P-K plus micronutrient inclusion where required
Typical project sizes
- Commercial nursery
- 20 – 200 t / year
- Perennial estate
- 200 – 1,500 t / year
- Regional programme
- 3,000 t+ / year
Standards, registrations and certification
- EN 13266 / equivalent release-rate test methods
- EU coating biodegradability requirements where applicable
- ISO 9001 with lot-level release testing
- Destination-market fertilizer registration
Frequently asked questions
No. Release accelerates with temperature. The RFQ asks suppliers to state the curve at your site temperature, not only at the reference condition.
Yes, but blending and spreading must be specified to avoid coating damage that turns controlled release into an uncontrolled dump.
You describe the requirement once. SeedMatchGroup structures it into a technically complete RFQ, runs a confidential process with qualified manufacturers in several producing regions, and returns a like-for-like comparison of specification, compliance documentation, lead time and landed cost. Supplier identities are only disclosed when you decide to contract.
The manufacturer. The supply contract is concluded directly between the manufacturer and the buyer. SeedMatchGroup is not a party to it and gives no product warranty. Registration in the country of use, import permits and application decisions remain the buyer's responsibility — see the fertilizer regulations overview and the platform disclaimer.
A lot-level certificate of analysis, safety data sheet in the language of the destination, label artwork and claims, proof of manufacturing quality system, registration or notification status in the destination market, and packaging and stability data for the transport route being quoted.
Input programmes are frequently structured with trade finance, supplier credit or a seasonal working-capital facility rather than paid from cash flow. The financing conversation runs in parallel with the technical evaluation so payment terms are part of the comparison rather than an afterthought.
As a rule of thumb, direct international procurement starts to price better than regional distribution from roughly one full container upwards, or where the specification is technical enough that local availability dictates the programme instead of the agronomy.
More in plant nutrition
The contract is between the manufacturer and the buyer. SeedMatchGroup is not a party to it.
SeedMatchGroup is an independent, supplier-neutral sourcing and introduction service. We do not manufacture, formulate, blend, register, certify, store, transport, apply, import, export or sell any fertilizer, crop-protection product, biological, seed, equipment or other input. Every supply agreement, price, warranty, specification, certificate of analysis, registration, label and delivery obligation is concluded and performed directly between the manufacturer or supplier and the buyer.
SeedMatchGroup gives no warranty for any product, quotation or supplier. Claims about product defects, non-conforming consignments, rejected imports, residue exceedances, regulatory penalties, crop damage, delays or supplier insolvency are to be pursued against the contracting manufacturer or supplier under the supply contract. SeedMatchGroup's own liability — including what it never excludes — is set out in the Terms of Service. Nothing on this page is legal or regulatory advice; buyers must verify current requirements with the competent authority in each relevant jurisdiction.
הודעה משפטית: SeedMatchGroup היא שירות רכש ותיווך עצמאי בלבד. איננו מייצרים, מפעילים, רושמים, מאשרים, מייבאים או מוכרים דשנים, תכשירי הגנת הצומח, תשומות או ציוד. ההתקשרות המסחרית נכרתת במישרין בין היצרן/הספק לבין הקונה, והם בלבד אחראים לאיכות המוצר, לרישום ולעמידה ברגולציה, לאספקה, להובלה ולתוצאה החקלאית. SeedMatchGroup אינה נותנת אחריות למוצר, להצעה או לספק, ותביעות בגין המוצר יופנו לספק המתקשר על פי חוזה האספקה. חבותה של SeedMatchGroup עצמה, לרבות מה שאינו מוגבל לעולם, מפורטת בתנאי השימוש (באנגלית). אין באמור ייעוץ משפטי או רגולטורי.
How this guidance is produced
We do not manufacture equipment and do not represent a fixed vendor list. Guidance reflects the project, not a catalogue.
Content is prepared and reviewed by sourcing specialists working on live commercial agriculture projects, supported by proprietary technology.
Practice drawn from greenhouse, CEA, irrigation, nursery, packing-house and processing projects across multiple climates and regulatory environments.
Project details stay private. Nothing is published, listed or shared with suppliers without your approval.
Editorial approach and company background: About SeedMatch Group.
What to do next
Most organizations move through these four steps in order. Each one can be started independently, and nothing is shared with suppliers until you approve the scope.
Turn your project scope into one supplier-neutral request qualified manufacturers can price consistently.
Site, water, energy, permits and documentation — the readiness work lenders and EPC contractors expect before quoting.
Debt, leasing, blended and export-credit structures for commercial agriculture CAPEX, assessed alongside the technical scope.
Supplier-neutral guidance on greenhouses, CEA, irrigation, nurseries, packing houses and project finance.