Exploring the potential of grass feedstock from marginal land in Ireland: Does marginal mean lower yield?

Meehan, Peter G.; Burke, Brendan; Doyle, Deirdre; Barth, Susanne; Finnan, John

doi:10.1016/j.biombioe.2017.10.014

Cited by 16 publications

(13 citation statements)

References 35 publications

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“…The high agronomic yield of King Grass resulted also in a high area-specific CH4 yield. The areaspecific methane yields obtained here are higher to those reported for other climate conditions with different types of grass feedstock: 702 m 3 CH4 ha −1 y −1 in Denmark [27], 3500 m 3 CH4 ha −1 y −1 in Finland [28], and 4689 m 3 CH4 ha −1 y −1 in Ireland [29]. The statistical analysis of area-specific methane yields (Table 1) showed significant differences between all the treatments (p < 0.05).…”

Section: Influence Of Harvesting Age On the Methane Yieldcontrasting

confidence: 66%

Effect of Harvesting Age and Size Reduction in the Performance of Anaerobic Digestion of Pennisetum Grass

et al. 2020

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In the rural zones of Latin American and Caribbean developing countries, the poorest households rely on traditional fuels such as firewood to meet their daily cooking needs. Many of those countries are located near the equator, where they have a tropical climate and grass is one of the most common biomass crops. The aim of this study was to evaluate the effect of harvesting age (30, 44, and 57 days) in the performance of anaerobic digestion of King Grass (Pennisetum purpureum cv. King Grass) grown under tropical climate conditions. Three reduction methods of crop size were also compared. Results showed that 44-day harvesting age presented the greater specific methane yield (347.8 mLCH4 g−1VS) and area-specific methane yield (9773 m3CH4 ha−1 y−1). The machine chopped method (1–3 cm for stems and 1–10 cm for leaves) was the reduction method that maximized the methane production. From those results, the calculated area required for grass cultivation to provide the cooking energy to a typical family in the Colombian rural zones is 154 m2.

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Section: Influence Of Harvesting Age On the Methane Yieldcontrasting

confidence: 66%

Effect of Harvesting Age and Size Reduction in the Performance of Anaerobic Digestion of Pennisetum Grass

et al. 2020

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“…Different levels of grass BM and CP were studied by applying different levels of nitrogen fertilization in the study area ( Table 1). The measured BM and CP (Table 4) were within the range usually reported for Irish grassland [34,[67][68][69]. For accurate grass BM and CP modelling, the MSI-UAV datasets and the HSI data were transformed to surface reflectance images.…”

Section: Discussionmentioning

confidence: 66%

Evaluation of Grass Quality under Different Soil Management Scenarios Using Remote Sensing Techniques

et al. 2019

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Hyperspectral and multispectral imagery have been demonstrated to have a considerable potential for near real-time monitoring and mapping of grass quality indicators. The objective of this study was to evaluate the efficiency of remote sensing techniques for quantification of aboveground grass biomass (BM) and crude protein (CP) in a temperate European climate such as Ireland. The experiment was conducted on 64 plots and 53 paddocks with varying quantities of nitrogen applied. Hyperspectral imagery (HSI) and multispectral imagery (MSI) were analyzed to develop the prediction models. The MSI data used in this study were captured using an unmanned aircraft vehicle (UAV) and the satellite Sentinel-2, while the HSI data were obtained using a handheld hyperspectral camera. The prediction models were developed using partial least squares regression (PLSR) and stepwise multi-linear regression (MLR). Eventually, the spatial distribution of grass biomass over plots and paddocks was mapped to assess the within-field variability of grass quality metrics. An excellent accuracy was achieved for the prediction of BM and CP using HSI (RPD > 2.5 and R2 > 0.8), and a good accuracy was obtained via MSI-UAV (2 < RPD < 2.5 and R2 > 0.7) for the grass quality indicators. The accuracy of the models calculated using MSI-Sentinel-2 was reasonable for BM prediction and insufficient for CP estimation. The red-edge range of the wavelengths showed the maximum impact on the predictability of grass BM, and the NIR range had the greatest influence on the estimation of grass CP. Both the PLSR and MLR techniques were found to be sufficiently robust for spectral modelling of aboveground BM and CP. The PLSR yielded a slightly better model than MLR. This study suggested that remote sensing techniques can be used as a rapid and reliable approach for near real-time quantitative assessment of fresh grass quality under a temperate European climate.

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“…The results from this trial for DMY demonstrate that Festulolium hybrids perform well in terms of productivity and in some cases out yield Lolium pure species. Similarly, Meehan et al (2017) found that Festulolium hybrids along with F. arundinacea were capable of producing greater DMY than L. perenne under suboptimal conditions, over a two year period for biomass production. Studied years tended to exhibit poorer yields in grasses as well as sharp declines in DMY in 2016 and 2018.…”

Section: Discussionmentioning

confidence: 86%

“…Both methods allow for grasses with adequate yield and nutrition and increased hardiness and persistency providing ecosystem services (Macleod et al 2013, Grogan et al 2018. Festulolium has been shown to out yield perennial ryegrass on marginal land for biomass production, illustrating the potential of hybrids under suboptimal growing conditions (Meehan et al 2017). Though the production model in Ireland is based on grazed grass, silage is a significant constituent in beef and dairy production because grass growth is seasonal and yield varies within the year.…”

Section: Introductionmentioning

confidence: 99%

Persistency, yield, and silage quality of Festulolium cultivars over a consecutive five-year period under a mild Atlantic climate

Curran¹,

Grogan²,

Milbourne³

et al. 2021

Biologia plant.

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Festulolium are hybrids between species within the Lolium and Festuca genera. They are attractive candidates for hybridisation due to their complementary characteristics in the context of forage production and environmental challenges, with Lolium exhibiting greater digestibility and Festuca possessing superior resilience to abiotic stress. To establish the extent of the representation of these characteristics in different Festulolium hybrids, a five-year field experiment was undertaken in a mild Atlantic climate. Four alternative species combinations and six pure species (controls) were evaluated for dry matter yield and persistency from 2014 to 2018, and various nutritional parameters in the first silage cut were measured from 2015 to 2017. Festulolium hybrids derived from L. multiflorum were found to group with both Lolium and Festuca pure species for a mean ground score to evaluate persistency (P < 0.05). Hybrid types of the L. perenne lineage were found to have ground score values more alike to their Lolium component and distinct from the F. pratensis pure species. In terms of dry matter yield, the majority of L. multiflorum hybrids observed formed a higher yielding group with the tetraploid L. multiflorum pure species and distinct from diploid F. pratensis pure species, whereas all other hybrid types and controls shared groups in common. For the nutrient content parameters including dry matter digestibility, water soluble sugars, and buffering capacity, Lolium pure species exhibited more favourable values, whereas hybrids were largely found to display intermediate to low values. Festuca pure species consistently exhibited poorer values with the exception of crude protein content where F. pratensis displayed the highest values and also the 2017 measurement of buffering capacity. In conclusion, the Festulolium hybrids shared characteristics with both parental types, but they often showed a greater likeness to the Lolium component.

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Exploring the potential of grass feedstock from marginal land in Ireland: Does marginal mean lower yield?

Cited by 16 publications

References 35 publications

Effect of Harvesting Age and Size Reduction in the Performance of Anaerobic Digestion of Pennisetum Grass

Effect of Harvesting Age and Size Reduction in the Performance of Anaerobic Digestion of Pennisetum Grass

Evaluation of Grass Quality under Different Soil Management Scenarios Using Remote Sensing Techniques

Persistency, yield, and silage quality of Festulolium cultivars over a consecutive five-year period under a mild Atlantic climate

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