Theme 13: Plant Improvement
Description
The purpose of this study was to investigate the effect of the 'stay-green' character, originally introduced into perennial ryegrass (Lolium perenne L.) for amenity purposes, on herbage yield, N concentration and colour in field swards of 'stay-green' forage ryegrass managed in different ways for agricultural use. The conclusions were that the introduction of the 'stay-green' character (1) confers greater greenness only at some times of year and only when there has been a sufficiently long period of regrowth, (2) is expressed only in older, as distinct from young, tillers, (3) reduces herbage yield, particularly when a long interval is allowed between defoliations, and (4) reduces the decline in the concentration of N in herbage during the latter part of a long period of regrowth.
Citation
Wilman, D.; Kennedy, K. R.; and Humphreys, M. O., "'Stay-Green' and Non-'Stay-Green' Perennial Ryegrass in Field Swards with Different Intervals between Cuts" (2021). IGC Proceedings (1993-2023). 9.
https://uknowledge.uky.edu/igc/19/13/9
Included in
'Stay-Green' and Non-'Stay-Green' Perennial Ryegrass in Field Swards with Different Intervals between Cuts
The purpose of this study was to investigate the effect of the 'stay-green' character, originally introduced into perennial ryegrass (Lolium perenne L.) for amenity purposes, on herbage yield, N concentration and colour in field swards of 'stay-green' forage ryegrass managed in different ways for agricultural use. The conclusions were that the introduction of the 'stay-green' character (1) confers greater greenness only at some times of year and only when there has been a sufficiently long period of regrowth, (2) is expressed only in older, as distinct from young, tillers, (3) reduces herbage yield, particularly when a long interval is allowed between defoliations, and (4) reduces the decline in the concentration of N in herbage during the latter part of a long period of regrowth.
