Clover: The Move Is On

Why It Matters

Clover integration offers Irish farmers a cost‑effective, climate‑resilient pathway to maintain profitability while reducing dependence on volatile fertilizer markets.

Key Takeaways

• Fertilizer price volatility drives push for clover integration.
• White clover reduces chemical nitrogen use by ~17% nationally.
• Clover swards boost milk solids 10‑40 kg per cow.
• Grazing‑efficient ryegrass varieties increase clover persistence in swards.
• New Clover Profit Index will guide variety selection for farmers.

Summary

The webinar, hosted by Teagasc’s dairy enterprise leader Eimear Kennedy, highlighted the accelerating move toward integrating white clover into Irish grasslands as fertilizer prices soar amid geopolitical tensions. Speakers emphasized that clover offers a resilient, locally sourced nitrogen source, reducing reliance on volatile imported fertilizers.

Data presented by Michael O'Donovan showed a 17% national drop in chemical nitrogen applications and a 40% rise in clover seed sales over the past three years. Field trials demonstrated 10‑40 kg per cow increases in milk solids, 10 kg carcass gains for beef, and earlier lamb finishing when clover is mixed with perennial ryegrass.

Researcher Sarah Walsh found that grazing‑efficient ryegrass varieties sustain 20‑30% clover content, improving post‑grazing heights and overall utilization. PhD student Kira Curran reported up to 660 kg ha⁻¹ extra dry matter from superior clover varieties and highlighted a 45 kg ha⁻¹ nitrogen fixation gap between top and bottom performers. The upcoming Clover Profit Index will translate these agronomic traits into economic values for farmers.

The implications are clear: adopting clover swards can cut fertilizer costs, boost animal productivity, and enhance soil health. With tools like the nitrogen calculator and the Clover Profit Index slated for release, 2026 is positioned as the target year for widespread clover adoption across dairy, beef, and sheep enterprises.

Original Description

A Clover: The Move is On webinar took place on Wednesday, 25 March. Dr. Emer Kennedy, Dairy Enterprise Leader, Teagasc was joined in studio by Professor Michael O'Donovan, Teagasc, Head of Grassland Science; Dr. Michael Egan, Teagasc Grassland Researcher; and dairy farmer Jim White.

Michael O'Donovan discussed ensuring successful establishment and management; Michael Egan provided an insight into the role of white clover and new advances; and Jim White provided a farmers' perspective on what clover offers.