Effect of<i>Lolium perenne</i>sward density on productivity under simulated and actual cattle grazing

Creighton, P.; Gilliland, T. J.; Delaby, Luc; Kennedy, E.; Boland, T. M.; O’Donovan, M.

doi:10.1111/j.1365-2494.2012.00872.x

Cited by 17 publications

(22 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The lack of difference between cutting and grazing in the PRG‐only swards in the current study supports findings by Creighton et al () and Cashman et al (). While these authors did not report a decrease in production in response to defoliation method, DM yields were more variable under grazing compared to cutting.…”

Section: Discussionsupporting

confidence: 92%

mentioning

confidence: 99%

“…Herbage DM production can be evaluated under both cutting and grazing (Creighton et al, 2012), with cutting being the most efficient method with respect to available resources within most research and evaluating institutes. Sward productivity under cutting is higher (Binnie & Chestnutt, 1991) and more stable (Creighton et al, 2012) than under grazing. This is because the pressures associated with grazing animals e.g., treading, urine excretion and selective grazing are not apparent in cut plots (Evans, Williams, Jones, & Evans, 1998;Jing et al, 2017).…”

mentioning

confidence: 99%

See 2 more Smart Citations

The effect of grazing versus cutting on dry matter production of multispecies and perennial ryegrass‐only swards

Grace

Boland

Sheridan

et al. 2019

Grass and Forage Science

View full text Add to dashboard Cite

Dry matter (DM) production of multispecies swards compared to perennial ryegrass (Lolium perenne; PRG) swards under intensive grazing warrants investigation as it is relatively unknown. A 5 × 2 factorial experiment, with five sward types and two defoliation methods, was used to investigate the effect of grazing versus cutting on dry matter (DM) production of multispecies and PRG‐only swards. Five sward types were established namely: a PRG‐only sward, receiving 250 kg N ha−1 year−1 (PRG250), and a PRG‐only sward (PRG90), a two‐species sward with PRG and white clover (Trifolium repens; PRGWC), a six‐species sward (6S) and a nine‐species sward (9S), each receiving 90 kg N ha−1 year−1. Cutting plots measured 1.95 × 10 m and grazing plots measured 10 × 10 m. All plots were harvested concurrently every 21–30 days from April‐November for two years (2015 and 2016). A strip from the grazing plots was cut for DM yield determination prior to turning in cattle for grazing. There was an interaction between sward type and defoliation method (p < .01), whereby there was no effect of defoliation method on the PRG‐only swards, however, the annual DM production of PRGWC, 6S and 9S swards reduced under grazing compared to cutting (p < .001; on average 1,929 kg DM/ha lower). Multispecies swards had lower DM production under grazing compared to cutting, while the DM yield of PRG‐only swards was unaffected by defoliation method.

show abstract

Section: Discussionsupporting

confidence: 92%

mentioning

confidence: 99%

mentioning

confidence: 99%

See 1 more Smart Citation

The effect of grazing versus cutting on dry matter production of multispecies and perennial ryegrass‐only swards

Grace

Boland

Sheridan

et al. 2019

Grass and Forage Science

View full text Add to dashboard Cite

show abstract

“…For example, higher herbage yield under cutting compared to grazing were observed by Binnie and Chestnutt [24] and Jackson and Williams [25]. In contrast, Creighton et al [26] found no difference in herbage production between grazing and cutting; Lantinga et al [27] found 10% higher herbage production in animal-grazed swards compared to cutting swards at 250 kg N ha -1 , whereas the difference disappeared at 550 kg N ha -1 . These contrasting effects were probably attributed to differential effects of grazing and cutting on plant species, consequently influencing sward structure [28], productivity and persistence.…”

Section: Introductionmentioning

confidence: 99%

Species Diversity Effects on Productivity, Persistence and Quality of Multispecies Swards in a Four-Year Experiment

et al. 2017

View full text Add to dashboard Cite

Plant species diversity may benefit natural grassland productivity, but its effect in managed grassland systems is not well understood. A four-year multispecies grassland experiment was conducted to investigate the effect of species diversity–legumes and non-leguminous forbs–on productivity, persistence and sward quality under cutting or grazing regimes and with or without slurry application. Three mixtures were established– 3-mix: grass, red and white clover, 10-mix: 3-mix plus birdsfoot trefoil and six non-leguminous forbs, and 12-mix: 10-mix plus lucerne and festulolium. Species diversity increased sward production and yield persistence under cutting regime. The 12-mix had the highest yield from the second year onwards and no statistically significant yield reduction over four years, while annual yields in the 3-mix and 10-mix decreased significantly with increasing grassland age. The higher yield in the 12-mix was mainly due to the inclusion of high-yielding lucerne. The 10-mix and 12-mix had lower proportions of unsown species than the 3-mix, the difference being dependent on grassland age. Generally, the 3-mix had higher concentrations of in-vitro organic matter digestibility (IVOMD), neutral detergent fiber (NDF) and crude protein (CP), and a lower concentration of ash than the 10-mix and 12-mix. Slurry application increased annual yield production by 10% and changed the botanical composition, increasing the proportion of grass and decreasing the proportion of legumes. Compared to cutting, grazing increased forage production by 9% per cut on average and lowered legume and forb proportions in the mixtures, but yields did not differ among the three mixtures. Overall, our results suggest that species diversity increases sward productivity and persistence only under an ungrazed cutting regime. We conclude that increasing species diversity by selecting appropriate species with compatible management is key to achieving both high yields and high persistence in managed grasslands.

show abstract

“…Previous research on the impact of ryegrass seeding rate on herbage accumulation has produced inconsistent results. Some studies reported greater herbage accumulation from higher seeding rates (>18 kg seed per ha) for the first 2 years after sowing (Creighton et al, 2012;Culleton & Murphy, 1987;Venuto, Redfearn, Pitman, & Alison, 2004), while others reported that the yield advantage from higher seeding rates dissipated after the first year (Culleton, Murphy, & O'Keefe, 1986;Keane, 1980). Conversely, others reported similar total herbage accumulation across a range of seeding rates for 1-3 years after sowing (Brougham, 1952;Frame & Boyd, 1986;Heddle & Herriott, 1954).…”

mentioning

confidence: 99%

High perennial ryegrass seeding rates do not negatively impact pasture sward persistence

Lee

Thom

Chapman

et al. 2017

Grass and Forage Science

View full text Add to dashboard Cite

Poor persistence of perennial ryegrass swards is a common problem; however, there is a lack of long‐term studies to understand the mechanisms associated with poor persistence. This study describes an experiment to test the hypothesis that high ryegrass seeding rates (>18 kg seed per ha) reduce long‐term population persistence because of smaller plant size and poorer survival during the first year after sowing. Four cultivars, representing four functional types of perennial ryegrass, were sown at five seeding rates (equivalent to 6, 12, 18, 24 and 30 kg seed per ha) with white clover in three regions of New Zealand. Swards were monitored for 5 years. No evidence was found to indicate a lack of persistence of ryegrass‐based swards sown at higher seeding rates. During the first year, swards sown at higher seeding rates had greater herbage accumulation (except at the Waikato site), greater ryegrass tiller density and greater ryegrass content. This initial impact of high seeding rates had largely dissipated by the fourth year, resulting in swards with similar annual herbage accumulation, tiller density and botanical composition. Similarly, there were relatively few differences among cultivars for these variables. Although high seeding rates did not negatively impact sward persistence, geographical location did, with strong evidence of ryegrass population decline at the Waikato site for all treatment combinations, some decline in Northland, and stable populations in Canterbury. It is possible that productive perennial ryegrass pastures can only be sustained for 4–5 years in some situations, even when the best ryegrass technology and management practices are used.

show abstract

Effect ofLolium perennesward density on productivity under simulated and actual cattle grazing

Cited by 17 publications

References 22 publications

The effect of grazing versus cutting on dry matter production of multispecies and perennial ryegrass‐only swards

The effect of grazing versus cutting on dry matter production of multispecies and perennial ryegrass‐only swards

Species Diversity Effects on Productivity, Persistence and Quality of Multispecies Swards in a Four-Year Experiment

High perennial ryegrass seeding rates do not negatively impact pasture sward persistence

Contact Info

Product

Resources

About