Why More Dairy Farmers Are Using Annual Ryegrass in Their Fields

By Blake Jackson

Annual ryegrass (Lolium multiflorum) is a valuable cool-season grass used in New York dairy farming systems as both a forage crop and a winter cover crop. It is recognized for its strong forage quality, extensive root system, ability to reduce soil erosion, and effectiveness in capturing leftover nitrogen from the soil.

Despite these benefits, growing annual ryegrass comes with challenges. Winter survival can vary across the Northeast, and farmers must balance their goals between maintaining spring cover and harvesting the crop as forage.

Successful establishment depends on proper planting timing, with early spring or early August being the most effective periods, along with sufficient soil moisture. Because of these requirements, annual ryegrass is generally a better fit after winter wheat or spring cereals rather than after summer crops like corn and soybeans.

Nutrient management is another important consideration. The crop efficiently absorbs nitrogen, meaning additional fertilizer is usually only needed on fields with low fertility where forage production is the goal.

Managing annual ryegrass before planting the next row crop can also be challenging. Effective termination requires active plant growth, and the discovery of glyphosate-resistant populations in New York highlights the importance of using certified seed and seeking guidance from crop advisers when selecting control methods.

Although annual ryegrass typically produces less dry matter than cover crops such as cereal rye, it provides excellent digestibility and forage value, especially when harvested at the boot stage. Proper harvesting and drying methods are essential for quality silage.

Overall, annual ryegrass works best as a targeted component of a larger cropping strategy. Farmers should remain flexible, plan for alternative uses, and prioritize successful termination and resistance monitoring for long-term success.