Wright, Peter J., Bruce Searle, Joy L. Tyson, and Kieran D. Mellow. “The Current Outbreak of Stemphylium Leaf Blight of Onion in New Zealand – Identification of Cause and Review of Possible Risk Factors Associated With the Disease”. New Zealand Plant Protection 72 (July 22, 2019): 10–20. Accessed August 29, 2026. https://journal.nzpps.org/index.php/nzpp/article/view/254.