Annual ryegrass, also called Italian ryegrass, is a turf grass with a dense, shallow root system. The extensive root system of this cover crop tolerates compacted soils and makes it an effective catch crop for excess nitrogen. It offers many benefits, including erosion control, improvement of aggregate stability, and minimization soil compaction, which is useful in high traffic areas. It can also be used as a nurse crop with fall-planted legumes such as clover. Annual ryegrass grows vigorously enough to out-compete late summer annuals as well as winter annuals that start in the fall. Ryegrass will tolerate a wide range of soils but performs best on loam soils with high fertility. Rapid, dense growth will suppress weeds in 4-6 weeks and will provide winter cover. These many attributes make annual ryegrass an effective management tool in vegetable crop rotations
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