RUST INCIDENCE AND HEADING OF OVERSEAS RYEGRASS CULTIVARS IN NEW ZEALAND

Abstract

Spaced plant data on rust and heading are summarized, comparing overseas ryegrass cultivars with those of New Zealand. Relative to 'Grasslands Ruanui' perennial ryegrass, most overseas cultivars were equally or more resistant to field infections of rust, and tended to be later heading. Overseas cultivars of annual ryegrasses tended to be earlier heading than 'Grasslands Paroa' Italian ryegrass.