9 Best Of Citrus Tree Diseases Special Edition. Citrus canker is a highly contagious bacterial infection of citrus trees causing yellow halo like lesions. Finally it curls the leaf into a shelter and pupates within.
Symptoms include stunted trees leaf and fruit drop twig dieback and fruit that are lopsided small and bitter tasting. Tristeza decline and stem pitting seedling yellows. Genus closterovirus citrus tristeza virus ctv citrus leprosis virus type i ii.
Note the notch on the left margin of the leaf which is symptomatic for this disease.
Citrus psorosis produces an escalating array of symptoms that include yellow spots on leaves low fruit yields small circles surrounded by sunken grooves on fruit rinds and eventually scale and sticky deposits forming on bark along with deep grooves or pits in trunks and large limbs. Genus closterovirus citrus tristeza virus ctv citrus leprosis virus type i ii. Citrus chlorotic dwarf virus ccdv the first symptom of citrus chlorotic dwarf on a leaf of a rough lemon seedling after inoculation. Citrus psorosis produces an escalating array of symptoms that include yellow spots on leaves low fruit yields small circles surrounded by sunken grooves on fruit rinds and eventually scale and sticky deposits forming on bark along with deep grooves or pits in trunks and large limbs.
