Evaluating changes in switchgrass physiology, biomass, and light-use efficiency under artificial shade to estimate yields if intercropped with Pinus taeda L.

Albaugh, Janine M.; Albaugh, Timothy J.; Heiderman, Ryan R.; Leggett, Zakiya H.; Stape, José Luiz; King, Kyle; O’Neill, Katherine; King, John S.

doi:10.1007/s10457-014-9708-3

Cited by 24 publications

(14 citation statements)

References 52 publications

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“…Trials examined switchgrass species optimization, provenance, spacing and configuration, fertilization rates and timing, herbicide prescriptions, shading effects, planting equipment and methods, harvest timing and frequency, site preparation, pine/switchgrass competition, and ash content. The intercropping system was patented [38], and while some studies were proprietary, others overlapped sustainability work and were published (e.g., [39][40][41][42][43][44]). Many trials were Fig.…”

Section: Dedicated Forest-based Feedstock Grown Specifically For Bioementioning

confidence: 99%

“…2). Plot studies demonstrate lower switchgrass height and productivity on edges nearest to pine, due to competition and shading [39,40]. Effect magnitude increases with pine age and competition for resources, including light.…”

Section: Site Planningmentioning

confidence: 99%

“…Effect magnitude increases with pine age and competition for resources, including light. Although a shading effect is not apparent early in the intercropping cycle [40] and has been hypothesized to help young switchgrass outcompete other grass [46], it greatly limits productivity as switchgrass matures [39].…”

Section: Site Planningmentioning

confidence: 99%

“…Preliminary results also found desynchronized planting reduced water quality response to switchgrass site preparation [47,48] comparison to simultaneous planting. However, switchgrass loses significant productivity under a shading equivalent of 6-8-year-old pine [39], moving switchgrass production to a 4-6-year window in a 25-year pine rotation.…”

Section: Site Planningmentioning

confidence: 99%

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Sustainable Production of Bioenergy Feedstock from the Industrial Forest: Potential and Challenges of Operational Scale Implementation

Nettles

Birks

Sucre

et al. 2015

Curr Sustainable Renewable Energy Rep

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There is increasing interest in energy from woody biomass as fossil fuel replacement, yet environmental and economic limitations have reduced feedstock available for bioenergy. Supply could likely be substantially increased with intensive forest management for productivity and utilization as well as forest-based dedicated energy crops. This paper discusses the role of industrial forests in sustainable bioenergy feedstock production and the lessons learned in an operational scale project. Catchlight Energy, LLC, a Chevron|Weyerhaeuser joint venture, evaluated intercropping switchgrass (Panicum virgatum) in loblolly pine plantations for liquid transportation fuel, with the goal of full-scale production. Within Weyerhaeuser, sustainability and operational research were conducted simultaneously. While the environmental research is non-proprietary and being published as it is completed, operational trials were internal. To understand lessons learned, staff responsible for management, planning, logistics, and field operations were interviewed, and perceived and actual barriers to production described. Ongoing environmental research is showing that carefully planned field operations can be conducted sustainably, but energy crop production fell below levels needed for economic feasibility.

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Section: Dedicated Forest-based Feedstock Grown Specifically For Bioementioning

confidence: 99%

Section: Site Planningmentioning

confidence: 99%

Section: Site Planningmentioning

confidence: 99%

Section: Site Planningmentioning

confidence: 99%

See 2 more Smart Citations

Sustainable Production of Bioenergy Feedstock from the Industrial Forest: Potential and Challenges of Operational Scale Implementation

Nettles

Birks

Sucre

et al. 2015

Curr Sustainable Renewable Energy Rep

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“…Solar radiation is an essential energy source for the maintenance of any cultivated species whose interactions with vegetation cover creates a microclimate capable of affecting the quantity and quality of energy available within the canopy, and consequently, the physiological processes of plants (Albaugh et al, 2014;Ehrenbergerová et al, 2016;Hung et al, 2016). Solar radiation, when intercepted by a crop, plays a fundamental role in the environment, and the available energy balance is associated with biomass production (Monteith & Moss, 1977).…”

Section: Introductionmentioning

confidence: 99%

Conversion Efficiency of Photosynthetically Active Radiation Into Acacia mearnsii Biomass

2018

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The objective of this experiment was to determine the conversion efficiency of intercepted photosynthetically active radiation into biomass of Acacia mearnsii De Wild. seedlings. A forest species, plastic tubes (90 cm 3 ), and 11 evaluation periods (up to 180 days after emergence) were used in this study. The leaf area index (LAI), total dry biomass (BIO), global solar radiation (GSR), cumulative intercepted photosynthetically active radiation (PARic), and conversion efficiency of radiation (εb) were determined using a pyranometer (LI200X, LICOR). The value of εb in BIO seedlings of Acacia mearnsii was 7.76 g MJ -1 . LAI was directly related to the efficiency of PARic, and this influenced the development, production potential and accumulation of BIO. The value of GSR flow was 11.81 MJ m -2 day -1 , while the value inside the greenhouse was 6.26 MJ m -2 day -1 .

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Tree–Crop Interactions in Temperate Agroforestry

Jose¹,

Holzmueller²

2021

North American Agroforestry

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Evaluating changes in switchgrass physiology, biomass, and light-use efficiency under artificial shade to estimate yields if intercropped with Pinus taeda L.

Cited by 24 publications

References 52 publications

Sustainable Production of Bioenergy Feedstock from the Industrial Forest: Potential and Challenges of Operational Scale Implementation

Sustainable Production of Bioenergy Feedstock from the Industrial Forest: Potential and Challenges of Operational Scale Implementation

Conversion Efficiency of Photosynthetically Active Radiation Into Acacia mearnsii Biomass

Tree–Crop Interactions in Temperate Agroforestry

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