Western Australia, Brown rot, Collar rot, Citrus, Citrus disease, Citrus pathology
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Brown rot is a serious disease of citrus, which fortunately has proved to be readily controllable. It attacks both leaves and fruits causing partial or complete defoliation, and a rather characteristic fruit rot. The disease may also affect the bark of citrus trees in the basal trunk region resulting in "collar rot," or as it is sometimes called, brown rot gummosis. This phase of the disease will be referred to later.
Cass Smith, W P.
"Brown rot and collar rot of citrus,"
Journal of the Department of Agriculture, Western Australia, Series 3: Vol. 1
, Article 8.
Available at: https://researchlibrary.agric.wa.gov.au/journal_agriculture3/vol1/iss2/8