Beechey-Gradwell, Zac D, Somrutai Winichayakul, and Nick J Roberts. 2018. “High Lipid Perennial Ryegrass Growth under Variable Nitrogen, Water and Carbon Dioxide Supply”. Journal of New Zealand Grasslands 80 (December):219-24. https://doi.org/10.33584/jnzg.2018.80.349.