Comic Of Citrus Canker On Stem Characters. Infection causes lesions on the leaves stems and fruit of citrus trees including lime oranges and grapefruit. A fruit infected with canker is safe to eat but too unsightly to be sold.
On some varieties these circles are raised with a rough texture on other varieties the concentric circles are relatively flat like the surface of a record. Fruit typical citrus canker lesions on fruit will range from 1 10 mm in size. Fruit lesions consist of concentric circles.
Where inoculum present considerable mature leaf infection and stem lesions particularly bad in young blocks especially if high canker in surrounding blocks.
On fruit the lesions can vary in size because the rind is susceptible for a longer time than for leaves and more than one infection cycle can occur figure 9. Where inoculum present considerable mature leaf infection and stem lesions particularly bad in young blocks especially if high canker in surrounding blocks. Fruit lesions consist of concentric circles. Dewdney associate professor of plant pathology and extension specialist.
