Coarse granules
FAD-SAP-03
1.0–2.5 mm · 25 kg
- 500 kg standard order
- 25 kg bags
- 20 g material sample; postage extra
Placement & field operations
Distribute granules evenly in the effective root zone, then backfill and irrigate. Plan placement, mixing and subsequent watering together.
| Application | Placement & operation | Reference / selection factors |
|---|---|---|
| Field row crops | Furrow placement or incorporation during sowing at about 10–15 cm | Reference rate: 45–75 kg/ha (3–5 kg/mu) |
| Orchards & forestry | Place along the effective root zone or mix with planting-hole backfill | Match location and per-tree quantity to tree size, roots and soil |
| Nurseries & transplanting | Mix into the root-ball planting zone or intended root layer | Mix evenly, backfill and water |
| Containers & horticulture | Mix uniformly into the intended substrate layer | Check container volume, grade and room for swelling |
Adjust rates for crop, soil, water quality and grade. Before combining with fertilizer or spreading equipment, check compatibility, metering and mixing uniformity.
Grades & Performance
Medium granules
FAD-SAP-01
0.8–1.0 mm · 25 kg
Fine granules
FAD-SAP-02
0.2–0.8 mm · 25 kg
| Pure-water absorption reference | 300–500 g/g |
|---|---|
| Absorption in 0.9% saline water | 60–100 g/g |
| Effective service period reference | Service duration depends on grade and application conditions; confirm the relevant evidence. |
Absorption depends on water quality; field performance and effective duration vary with soil and application conditions.
Reading water-absorption dataClick to expandClick to collapse
| Metric | How to read it | What it tells you |
|---|---|---|
| Absorption ratio · g/g | Mass of absorbed water ÷ dry material mass | Water-storage capacity under the same water quality and test duration |
| Absorption rate · g/(g·min) | Water absorbed per unit dry mass per unit time | Early uptake and time to reach a plateau |
| Cycle retention · % | Ratio at cycle N ÷ initial ratio ×100% | Performance of the same sample after wetting–drying cycles |
Application Results & Costing
Wheat Field Trial Results
| Crop | Wheat |
|---|---|
| Trial period | 2018–2019 |
| Water saved | 60 m³ / mu |
| Average yield increase | 13.77% |
In 2018–2019 wheat field trials, average yield increased by 13.77% with irrigation water savings of 60 m³ per mu (1 mu ≈ 667 m²). Results relate to the trial’s cultivation and application conditions.
Worked Cost Example · Hypothetical
| Material | 120 USD |
|---|---|
| Allocated freight | 30 USD |
| Additional application labour & equipment | 50 USD |
| Total additional cost | 200 USD |
| Water & energy savings | 100 USD |
| Irrigation labour savings | 80 USD |
| Total cost savings | 180 USD |
Illustrative calculation in USD for the same area and season; assumed costs and savings, not a quotation or field measurement.
Without added crop contribution: 180 − 200 = −20 USD. With an additional 100 USD crop contribution, net of extra harvest and selling costs: 180 + 100 − 200 = 80 USD.
European viticulture researchClick to expandClick to collapse
Published studies: materials, growing conditions and measured outcomes.
| Study & location | Design & materials | Reported outcome |
|---|---|---|
| Italy · 2025 Frioni et al. ↗ | Potted vines and a new rainfed vineyard; potassium polyacrylate hydrogel (SH1) and organic hydrogel (SH2) | Field shoot growth and final leaf area were about 25% higher in treated vines after two years. |
| Portugal · 2026 Victorino et al. ↗ | Two-year controlled pot study; potassium polyacrylate SAP (SOCO SDK205X) | Irrigated water productivity increased by 25.5% under well-watered and 30.0% under deficit conditions. |
Potassium acrylate–acrylamide copolymer combined with natural attapulgite. Select the granule grade around the crop, soil or growing medium, irrigation water and placement method.
How SAP Stores and Releases Water
From rainfall and irrigation to moisture held close to the roots.
Absorb
Dry granules take up water from rainfall or irrigation. The cross-linked polymer network expands into a hydrated gel.
Hold
Dispersed through the intended soil layer, the hydrated material stores water within its polymer network.
Release
As water conditions change around the roots, retained moisture becomes available to the surrounding soil and plants. The material can absorb water again when rewetted.
Degradation mechanisms & publications →
Material composition: polymer network & attapulgiteClick to expandClick to collapse
A potassium-based hydrophilic polymer network is combined with attapulgite mineral, bringing together water storage and mineral-surface interactions.
Polymer network · PAM & carboxylate groups
Amide and carboxylate groups interact with water. Crosslinking lets the granule swell into a gel and store and release moisture through repeated wetting and drying.
Attapulgite · mineral composite component
Attapulgite has fibrous crystals, channels and adsorption sites. Together with the polymer network, it forms an organic–inorganic composite that influences swelling, water retention and material structure.
Ageing & degradation: mechanisms and publicationsClick to expandClick to collapse
Polymer and mineral components follow different pathways. Wetting and drying, temperature, oxygen and soil microorganisms influence changes after use.
Side-group changes
PAM amide groups can undergo hydrolysis or biological transformation. This differs from complete breakdown of the carbon backbone. [1]
Chain breakdown
Oxidation, light or biological activity can shorten polymer chains, changing network structure and water absorption. [2]
Further transformation
Some products can undergo further microbial use or mineralization; attapulgite remains an inorganic mineral component. [2]
Functional service life describes how long water-retention performance persists; it is different from the time required for complete polymer mineralization.
Related publications
- Mechanism review
Nyyssölä & Ahlgren · 2019
Microbial degradation of polyacrylamide and the deamination product polyacrylate
Distinguishes amide deamination from carbon-backbone degradation and reviews bacterial and fungal pathways.
International Biodeterioration & Biodegradation 139, 24–33
Original study ↗DOI: 10.1016/j.ibiod.2019.02.005 - Fungal culture experiment
Mai et al. · 2004
Degradation of acrylic copolymers by white-rot fungi
Culture experiments distinguish molecular-weight reduction and depolymerization from complete mineralization.
Applied Microbiology and Biotechnology 65, 479–487
Original study ↗DOI: 10.1007/s00253-004-1668-5 - Agricultural review
Sroka & Sroka · 2024
Superabsorbent Hydrogels in the Agriculture and Reclamation of Degraded Areas
Reviews agricultural hydrogel composition, degradation in soil and application conditions.
Sustainability 16(7), 2945
Original study ↗DOI: 10.3390/su16072945
Production, Laboratory & Delivery
Production
Granule processing and packing scene.
Laboratory R&D
Sample preparation and laboratory testing scene.
Agree the packaging
Agree pack weight, lining, marking and storage instructions for the order.
Prepare for the destination
Confirm pallet arrangement, freight conditions and required documents.
Buying Guide
- Selection: provide crop, soil or substrate, irrigation water and application method; select the grade and confirm any custom requirements.
- Trial: record product batch, amount and placement, irrigation, labour and saleable yield over matched areas in the same season.
- Order: agree quantity, packaging and destination, then confirm the quotation, sample reference and dispatch date.
| Minimum order & sample | Standard orders: 500 kg, equivalent to 20 standard 25 kg bags. A 20 g sample may be supplied free of material charge; postage is paid by the customer. Custom grades and packaging are quoted separately. |
|---|---|
| Quotation & payment | FOB preferred; CIF and factory-gate pricing can be discussed. A 30% deposit is generally proposed, with the balance before delivery or collection. Port, fees, currency, validity and dispatch date are agreed per order. |
Product information
English product information is available below. Use the stated model and revision when preparing an enquiry.
Samples and Supply for Your Market
For an application enquiry, share the crop, soil or substrate, water source and placement method. For distribution, add the target market, expected quantity, packaging and required arrival window.