The Perfect Starter Fertiliser for High-Performing Oilseed Rape

As growers prepare for oilseed rape drilling, establishing a strong, resilient crop from day one remains a key priority. A blend of DAP and POLY4 is proving to be an effective starter fertiliser combination, delivering both immediate nutrient availability and balanced, season-long nutrition.

Combining Fast Nutrition with Long-Term Performance

Oilseed rape requires rapid establishment to maximise yield potential, particularly when facing challenging autumn conditions. DAP provides readily available nitrogen and phosphate to drive early crop growth, while POLY4 complements this with a sustained supply of essential nutrients that support continued development throughout the season.

The resulting blend delivers six key nutrients in a single application, helping growers build the foundations for a healthy, resilient crop.

Why DAP + POLY4 Works for OSR

Balanced nutrition at drilling
The combination of DAP and POLY4 supplies nitrogen, phosphate, potash, sulphur, magnesium and calcium, providing a more balanced nutritional package from the outset.

Strong early establishment
High levels of phosphate from DAP, supported by calcium and magnesium from POLY4, encourage root development and vigorous early growth.

Long-lasting sulphur supply
Sulphur plays a critical role in oilseed rape production. POLY4 provides a sustained release source of sulphur, helping to support crop growth throughout the season.

Improved nutrient efficiency
By pairing nitrogen from DAP with sulphur and additional secondary nutrients from POLY4, crops are better equipped to utilise available nutrients effectively.

Built for OSR Performance from Day One

Applied directly at drilling, the blend is designed to give young plants the best possible start.

Recommended application rate: 250 kg/ha

At this rate, growers can expect to supply approximately:

• 30 kg/ha Nitrogen (N)
• 77 kg/ha Phosphate (P₂O₅)
• 12 kg/ha Potash (K₂O)
• 16 kg/ha Sulphur (SO₃)
• Plus valuable Magnesium (MgO) and Calcium (CaO)

A Solid Foundation for the Season Ahead

With early establishment becoming increasingly important for successful OSR production, DAP blended with POLY4 offers growers a practical solution that combines the immediate benefits of a traditional starter fertiliser with the longer-term advantages of balanced nutrition.

By promoting strong rooting, sustained crop development and efficient nutrient utilisation, DAP + POLY4 provides a solid foundation for a productive and resilient oilseed rape crop.

For more information on DAP + POLY4 blends and tailored OSR nutrition programmes, contact the Thomas Bell team.

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