Dry matter and sheep production of four dryland tall fescue-clover pastures 4-6 years after establishment

Black, Alistair; Moir, James L.

doi:10.33584/jnzg.2015.77.492

Cited by 1 publication

(1 citation statement)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Most studies of greater than 3 years have compared different grass species (e.g. Barker et al 1993), and only four have incorporated comparisons of multiple genotypes/cultivars within species (Allan & Keoghan 1994;Chapman et al 2015;Black & Moir 2015;Lee et al 2017). Except for Allan & Keoghan (1994), who used a plant survival score, these studies have used DM yield and/or botanical composition as the main measure of persistence.…”

Section: Time Scales and Data Limitationsmentioning

confidence: 99%

The measurement of perennial ryegrass persistence

Dodd

Chapman

Ludemann

et al. 2018

Journal of NZ Grasslands

View full text Add to dashboard Cite

Poor persistence in perennial ryegrass has been identified as a major limitation to pasture productivity, particularly in the upper North Island. Persistence can best be defined as the continuity of forage yield relative to a cultivar’s potential. Though there is limited evidence of differences in persistence between cultivars, there is interest in including persistence in the DairyNZ Forage Value Index. This requires an agronomically robust metric of persistence, measured over a suitable time frame and connected to economic value. Five candidates are evaluated: plant populations, tiller populations, basal cover, ground score and annual dry matter yield. Scarcity of long-term data is a major limitation to development of performance values for persistence, and must be addressed. The four abundance-based measures also lack a clear connection to economic values, from the limited data available. A persistence metric is proposed, that relates medium-term dry matter yield to short-term dry matter yield, for which perennial ryegrass functional type and cultivar differences are demonstrated.

show abstract