Full TGIF Record # 309193
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DOI:10.1016/j.agee.2019.106691
Web URL(s):https://www.sciencedirect.com/science/article/pii/S016788091930307X
    Last checked: 11/12/2019
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https://www.sciencedirect.com/science/article/pii/S016788091930307X/pdfft
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Publication Type:
i
Report
Author(s):Lowry, Carolyn J.; Bosworth, Sidney C.; Goslee, Sarah C.; Kersbergen, Richard J.; Pollnac, Fredric W.; Skinner, R. Howard; Warren, Nicholas D.; Smith, Richard G.
Author Affiliation:Lowry: Global Change and Photosynthesis Research, U.S. Department of Agriculture-Agricultural Research Service, University of Illinois, Urbana, IL; Bosworth: Department of Plant and Soil Science, University of Vermont, Burlington, VT; Goslee and Skinner: USDA-ARS Pasture Systems and Watershed Management Research Unit, University Park, PA; Kersbergen: Maine Food and Agriculture Center and UMaine Cooperative Extension, University of Maine, Waldo, ME; Pollnac, Warren, and Smith: Department of Natural Resources and the Environment, University of New Hampshire, Durham, NH
Title:Effects of expanding functional trait diversity of productivity and stability in cultivar mixtures of perennial ryegrass
Source:Agriculture, Ecosystems & Environment. Vol. 287, January 1 2020, p. 1-12.
# of Pages:12
Publishing Information:Amsterdam, The Netherlands: Elsevier Science Publishers
Related Web URL:https://www.sciencedirect.com/science/article/pii/S016788091930307X#abs0010
    Last checked: 11/12/2019
    Notes: Abstract only
Keywords:TIC Keywords: Biodiversity; Biomass; Cold resistance; Cultivar variation; Dry weight; Forage; Heading date; Lolium perenne; Productivity; Seed mixtures; Traits
Abstract/Contents:"Cultivar mixtures can provide a host of beneficial agroecosystem services in annual grain crops; however, it remains unclear whether these same benefits apply to perennial forage cropping systems, or the degree to which beneficial effects depend on the functional trait diversity of the mixtures. We conducted a field experiment across four locations in the Northeast US in which we grew perennial ryegrass cultivar mixtures varying in cultivar number and range of expression of three functional traits (winter hardiness, heading date, and extended growth) and assessed the effects on dry matter yield and inter-annual yield variability. Trait ratings supplied by the seed company were related to observed variation in perennial ryegrass productivity and/or stability at both the individual cultivar and mixture levels. Winter hardiness was associated with greater perennial ryegrass cumulative biomass, and lower interannual stability. In contrast, extended growth was associated with lower cumulative biomass, and both extended growth and later heading date were associated with greater interannual variability. Overall, cultivar richness was negatively associated with perennial ryegrass biomass and stability; however, the best performing mixtures performed as well as the recommended cultivar for the region. When comparing mixtures with equal cultivar richness, functional trait diversity measured as the additive trait range-the summed range of the three traits associated with the cultivars in that mixture-was positively associated with biomass production and over-yielding, but not interannual variability. Cultivar mixtures of perennial ryegrass can lead to improved forage production when specific functional traits are optimized within mixtures. Our results support the growing understanding that efforts to ecologically intensify agriculture through enhancement of crop diversity are more likely to succeed when they explicitly consider the functional traits of the crops involved rather than solely numbers of cultivars or species."
Language:English
References:53
Note:Figures
Tables
Graphs
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Lowry, C. J., S. C. Bosworth, S. C. Goslee, R. J. Kersbergen, F. W. Pollnac, R. H. Skinner, et al. 2020. Effects of expanding functional trait diversity of productivity and stability in cultivar mixtures of perennial ryegrass. Agric. Ecosyst. Environ. 287:p. 1-12.
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DOI: 10.1016/j.agee.2019.106691
Web URL(s):
https://www.sciencedirect.com/science/article/pii/S016788091930307X
    Last checked: 11/12/2019
    Requires: JavaScript
    Access conditions: Item is within a limited-access website
https://www.sciencedirect.com/science/article/pii/S016788091930307X/pdfft
    Last checked: 11/12/2019
    Requires: PDF Reader
    Access conditions: Item is within a limited-access website
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