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Italian ryegrass - recommended varieties 1979-80



Italian ryegrass - recommended varieties 1979-80



Agriculture in Northern Ireland 54(2): 34-36



Data are presented on DM yields, av. date of 50% heading, persistence and winter hardiness of 6 Italian ryegrass and 3 hybrid ryegrass under (a) simulated grazing (9 cuts/yr) and (b) silage systems (5 cuts) and given total annual applications of 450 and 350 kg N/ha, resp. DM yields expressed as percentage of R.v.P., which gave 13.4 and 19.6 t/ha in (a) and (b), ranged from 90% in Italian ryegrass Serenade to 101% in Delecta in (a) and from 92% in Optima to 104% in Meritra in (b).

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Accession: 000688495

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