BREEDING AND DESCRIPTION OF GRASSLANDS SUSTAIN, A MEDIUM-LARGE-LEAVEDWHITE CLOVER (TRIFOLIUM-REPENS L) CULTIVAR

'Grasslands Sustain' white clover was bred to break the negative relat ionship between yield potential and persistence, by combining medium-l arge leaf size with high stolen growing point density. It is expected to grow and persist well under a range of stock classes and management systems. Winter growth is similar to that of 'Grasslands Kopu' but au tumn, spring, and summer growth is improved. Depending on the trial, 5 0-60% of genotypes were cyanogenic. Peak flowering occurred 2 weeks af ter the longest day irrespective of closing date.