We used
two native monoculture accessions,perennial ryegrass (Lolium perenne L. ‘Yarand’)and(Lolium perenne L.
‘Shadegan’), Native low-variety Mixture(NM1):consistingof50% Lolium multiflorum ‘Shadegan’, 50% Festuca
spp. ‘Shadegan’,Nativehigh-varietyMixture(NM2):consistingof55% Lolium perenne L. ‘Yarand’,35%
Lolium perenne L. ‘Shadegan’,5% L. multiflorum ‘Shadegan’ and5% Festuca spp.