Organic fertiliser and crop nutrition for arable farming
Organic fertiliser and crop nutrition for arable farming
UK arable farming is under increasing pressure. Soil health is declining, our climate is becoming more volatile, environmental regulations are tightening and input costs are rising. At SoilWorx, we work alongside arable farmers to deliver a solution: consistent, high-quality, slow-release organic fertilisers that build enduring soil health, maintain yields, reduce nutrient run-off and deliver a measurable return on investment.
Our fully automated production line is capable of producing over 500 tonnes of organic pellets every week, to exactly the same specification. Our process of composting, heating and sterilising delivers consistent moisture levels whilst eliminating pathogens too. So they are safe to use on Class 1 veg and all crop types. With 75%+ organic matter content and four times the nutrient density of standard manure, SoilWorx crop nutrition solutions offer a genuine path to more sustainable arable production without compromising performance.
Why choose organic crop nutrition for arable crops?
Decades of reliance on synthetic fertilisers, soil compaction and now climate change have taken a toll on arable soils across the UK and Ireland. Organic matter levels on many arable farms have fallen below 3%, leading to poor soil structure, reduced water-holding capacity and increased erosion risk.
Organic fertiliser addresses these challenges at the root:
- Rebuilds soil organic matter: Every tonne of SoilWorx crop nutrition product adds measurable organic matter, improving soil structure season on season.
- Feeds the soil biology: Organic inputs stimulate microbial activity, unlocking nutrients already present in the soil and improving natural disease suppression.
- Slow-release crop nutrition: Nutrients are released in line with crop demand, reducing leaching losses and improving nitrogen use efficiency.
- Reduces chemical dependency: By improving natural soil fertility, organic fertiliser can reduce or replace a proportion of synthetic inputs as part of a hybrid approach over time.
- Supports environmental schemes: Organic fertiliser use aligns with SFI (Sustainable Farming Incentive), ELMS and cross-compliance requirements.
Recommended SoilWorx products for arable
Dynamo 4-2-3
A base dressing for all crops
Dynamo is the foundation of any arable or grassland nutrition programme. With a balanced 4-2-3 NPK analysis plus 75%+ organic matter, it delivers essential macro-nutrients alongside the organic matter your soil needs. Organic Trust and OMRI certified. For crops, apply pre-drilling as a base dressing to establish a strong nutrition programme for the growing season.
N-Boost 8-2-2
Higher nitrogen content for cereals and oilseed rape
Provides an 8% nitrogen push when it’s needed, in a slow-release organic form (e.g. for cereals entering stem extension and oilseed rape). Unlike urea or ammonium nitrate, N-Boost releases nitrogen gradually, reducing the risk of scorch and leaching while providing sustained nutrition through the critical growth stages.
Feather Meal 13-0-0
Slow-release nitrogen for crop nutrition
For situations demanding higher nitrogen without additional phosphorus or potassium, Feather Meal offers 13% N in a form that breaks down steadily over 8–12 weeks. Organic Trust certified. Ideal for reducing nitrogen application rates or correcting mid-season deficiency.
K-Boost 3-2-17
Purpose-built for potassium-hungry crops
SoilWorx K-Boost delivers a concentrated dose of potassium alongside essential base nutrition and 60%+ organic matter. Applied pre-planting, K-Boost ensures potassium availability at critical growth stages for all fruit and veg, especially potatoes.
Seasonal application guide for arable
|
Season
|
Timing
|
Product
|
Application
|
|---|---|---|---|
|
Autumn
|
Pre-drilling (Sept–Oct)
|
Dynamo 4-2-3
|
Base dressing at 500–750 kg/ha.
Incorporate before drilling winter cereals or oilseed rape. |
|
Late winter
|
Feb–March
|
N-Boost 8-2-2
|
First nitrogen application at 400–600 kg/ha as crops resume growth.
|
|
Spring
|
March–April
|
N-Boost 8-2-2 or Feather Meal
|
Second nitrogen split at 400–600 kg/ha to or Feather Meal support stem extension and ear development.
|
|
Spring
(new crops) |
Pre-drilling (March–May)
|
Dynamo 4-2-3
|
Base dressing for spring cereals, pulses and root crops at 1250kg/ha.
|
Application rates are a guide. Use the SoilWorx Fertiliser Calculator and consult soil analysis results for precise recommendations. Always talk to your agronomist or qualified adviser.
Crop-specific recommendations
|
Crop
|
Key Nutrient Needs
|
Recommended Products
|
Notes
|
|---|---|---|---|
|
Winter Wheat
|
High N,
moderate P & K |
Dynamo (base) + N-Boost or Feather Meal (top-up)
|
Split nitrogen applications for milling wheat quality.
|
|
Winter Barley
|
Moderate N,
moderate P & K |
Dynamo (base) + N-Boost (single spring app)
|
Lower total N than wheat. Early application timing critical.
|
|
Oilseed Rape
|
High N, high S, moderate K
|
Dynamo (autumn base) + N-Boost (spring)
|
Autumn establishment critical. Consider sulphur supplementation.
|
|
Spring Oats
|
Moderate N, moderate P & K
|
Dynamo (base) + N-Boost if needed
|
Avoid excessive N to prevent lodging.
|
|
Field Beans / Peas
|
Moderate P & K
|
Dynamo (base only)
|
Legumes fix their own nitrogen. Use only as a soil improver before planting.
|
Organic crop nutrition vs synthetic fertiliser for arable
|
Factor
|
Organic (SoilWorx)
|
Synthetic (Conventional)
|
|---|---|---|
|
Nutrient release
|
Slow, sustained release matching crop demand
|
Fast release, higher leaching risk
|
|
Soil organic matter
|
Builds organic matter with every application
|
No organic matter contribution
|
|
Soil biology
|
Feeds and stimulates microbial populations
|
Can suppress soil biology over time
|
|
Environmental impact
|
No chemical additives or plastic
|
Chemical additives
|
|
Reliability of supply
|
UK-produced with dependable, local supply
|
Tied to international markets and geopolitical events
|
|
Scheme compliance
|
Supports SFI, organic certification
|
May conflict with environmental scheme targets
|
Meeting sustainability requirements
The agricultural policy landscape is shifting decisively towards environmental outcomes. Under the Sustainable Farming Incentive (SFI) in England, and equivalent schemes across the devolved nations, farmers are incentivised to improve soil health, reduce nutrient pollution and increase organic matter levels.
Including SoilWorx organic fertilisers in your crop nutrition programme supports compliance with:
- SFI Soil Health actions: Organic matter additions directly support improved soil structure
- Nutrient management requirements: NVZ rules limit the application of all fertilisers in areas with poor river pollution. Although SoilWorx organic fertilisers improve soil structure and reduce the risk of nutrients leaching into watercourses, farmers must follow NVZ spreading rules and closed periods.
- Organic certification: SoilWorx crop nutrition products are OMRI Listed and Organic Trust certified, suitable for fully organic systems.
- Carbon and sustainability reporting: Lower carbon footprint than synthetic alternatives supports farm-level sustainability metrics.
Frequently asked questions
If I add SoilWorx to my crop nutrition programme, will I see any difference in yields?
Like any organic fertiliser, replacing a portion of your synthetic fertiliser programme with SoilWorx may lead to a short transition period, with modest yield adjustment as soil biology rebuilds. However, many arable farmers using SoilWorx report comparable yields within two to three seasons, with the added benefit of improved soil resilience and lower input costs over time.
How do I spread pelletised organic fertiliser?
SoilWorx products are suitable for most spreaders and no specialist equipment should be required. Test and calibrate your spreader prior to application. The consistent pellet size (4–5mm) ensures an even distribution at normal spreading widths of up to 36 metres.
Is there any odour issue with SoilWorx products?
Our products are heat-treated at over 115°C, which sterilises the material and greatly reduces odour. Most customers report minimal smell: far less than raw manure or slurry.
Can I use SoilWorx alongside synthetic fertilisers?
Yes. Many arable farmers include SoilWorx organic fertiliser in their crop nutrition programmes and supplement with synthetic nitrogen if needed. This hybrid approach reduces overall synthetic use while building soil health.
What about weed seeds and pathogens?
Our heat-treatment and milling process eliminates weed seeds, pathogens and harmful bacteria. SoilWorx products are safe to use on any crop without risk of introducing contaminants.
Ready to improve your arable soil?
Talk to your agronomist or qualified adviser to discuss a tailored crop nutrition programme for your farm, or use our fertiliser calculator to estimate your requirements. Get in touch.