Edmeades, Douglas, and Robert McBride. “Is Soil Fertility a Factor Limiting Pasture Production and Persistence in New Zealand?”. Journal of New Zealand Grasslands 87 (November 7, 2025): 79–85. Accessed June 6, 2026. https://www.nzgajournal.org.nz/index.php/JoNZG/article/view/3723.