Sweet Orange Diseases

A Lecture To ToT trainees ( FFS)

By Mr. Allah Dad

Khan Provincial

Coordinator IPM KPK

MINFAL Pakistan

Tristeza

Tristeza

Tristeza

Tristeza

Citrus Scab

Citrus Scab

Citrus Scab

Citrus Scab

Citrus Canker Citrus canker is a serious bacterial disease of citrus trees including

grapefruit, lemons, limes and oranges. It reduces the growth of new fruit and spoils healthy fruit. Outbreaks of this disease have been eradicated from Queensland and the Northern Territory at great cost to industry and growers.

The disease attacks the leaves, twigs and fruit of citrus trees. It causes the leaves to drop and fruit to fall to the ground before it ripens. People may also contribute to disease spread by moving infected plants or plant parts

Citrus Canker

Citrus Canker

Citrus Canker

Citrus Canker

Anthracnose

Anthracnose

Citrus greening

Identification tip:  Mottling and yellowing that

cross leaf veins help to distinguish citrus greening (Huanglongbing), an exotic tree-killing bacterium. When zinc deficiency is the cause, discoloring occurs between distinctly greener veins. Report to agricultural officials any finding citrus greening disease

Huanglongbing( HBL)Citrus Greening)

Huanglongbing( HBL)Citrus Greening)

Huanglongbing( HBL)Citrus Greening)

Phytophthora gummosis

Identification tip :Phytophthora

gummosis is the most common cause of profuse dark exudate from bark. Several other limb, trunk, and root diseases cause oozing bark and can stunt and sometimes kill trees.

Phytophthora gummosis

Phytophthora gummosis

Phytophthora gummosis

Citrus Chlorotic dwarf virus

Citrus Chlorotic dwarf virus

Citrus Chlorotic dwarf virus

Pseudocercospora Fruit and Leaf Spot

Pseudocercospora Fruit and Leaf Spot

Pseudocercospora Fruit and Leaf Spot

Pseudocercospora Fruit and Leaf Spot