Hybrid ryegrasses are bred from perennial ryegrass and Italian ryegrass to combine the best features of both parent species.
They range from types that resemble Italian ryegrass more (traditionally known as short-rotation ryegrasses), with high yields of larger-leaved forage, persisting from 2-4 years, to types almost as persistent as perennial ryegrass (traditionally called long-rotation ryegrass). Some cultivars may contain the same endophyte as described for perennial ryegrass.
Hybrid ryegrasses are frequently added to perennial pasture seed mixtures to provide increased winter production during the first few years and to boost animal performance in cooler regions. They are commonly sown in late summer/autumn to provide increased winter/early spring production.
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Suggested sowing rates
Hybrid ryegrass are usually Tetraploids, with large seeds. Therefore a full sward would be planted at 30-35kg/ha. A Diploid would be planted at 20-30kg/ha. Hybrids are a great option to be undersown into perennial pastures at 13-18kg/ha for Tetraploids or 10-15kg/ha for Diploids.