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    Identification of pasture mixtures that maximise dry matter yield

    Black, Alistair; Anderson, S; Dalgety, SK
    Abstract
    A mixture experiment was conducted to identify an optimal pasture seed mixture that maximised dry matter (DM) yield under irrigated, sheep-grazed conditions inmid-Canterbury, New Zealand. Nineteen seed mixtures were created using a simplex design from a pool of four species: perennial ryegrass, plantain, white clover and red clover. Seed mixtures were drilled into plots in March 2015 and the yield from sowing to May 2017 was modelled. The model analysis defined the optimal seed mixture proportions as 0.25 ryegrass, 0.28 plantain and 0.47 red clover of total number of seeds per unit area, or 7.5, 6.3 and 8.2 kg/ha, respectively (22.0 kg total seed). This mixture was predicted to yield 39.81 t DM/ha after 2 years. Ryegrass and plantain interacted more strongly with red clover than white clover, leading to increased yields over monocultures (diversity effects). Additional yield benefits arose from the three-species mixture of ryegrass, plantain and red clover.... [Show full abstract]
    Keywords
    diversity effect; pasture establishment; perennial ryegrass; plantain; red clover; seed mixtures; simplex design; white clover
    Fields of Research
    0703 Crop and Pasture Production; 070302 Agronomy
    Date
    2017
    Type
    Journal Article
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    • Department of Agricultural Sciences [1743]
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    PBRF Supporting Evidence Identification of pasture-Black.PNG
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    © The Authors and NZGA
    Citation
    Black, A.D., Anderson, S., & Dalgety, S.K. (2017). Identification of pasture mixtures that maximise dry matter yield. Journal of New Zealand Grasslands, 79, 103-109.
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