Coriander diseases A lecture on ToT training of FFS By Mr Allah Dad Khan Provincial Coordinator...

Coriander DiseasesA

Lecture To ToT trainees ( FFS) By

Mr. Allah Dad Khan Provincial Coordinator

IPM KPK MINFAL Pakistan

Bacterial leaf spot Pseudomonas syringae

Symptoms

• Very small water-soaked spots between leaf veins which enlarge and turn dark brown to black; stems may have elongated dark streaks; inflorescences yellowing and turning brown and blighted; water-soaked lesions on fruit

Soft rot Erwinia carotovoraErwinia chrysanthemi

Pseudomonas marginalis

Symptoms

• Small water-soaked lesions near base of petioles which become soft, sunken and brown

Powdery mildew Erisyphe heraclei

Symptoms

• Powdery growth on leaves, petioles flowers stalks and bracts; leaves becoming chlorotic; severe infections can cause flowers to become distorted

Damping-off Pythium spp.Rhizoctonia solani

Symptoms

• Soft, rotting seeds which fail to germinate; rapid death of seedling prior to emergence from soil; collpase of seedlings after they have emerged from the soil caused by water-soaked reddish lesions girdling the stem at the soil line

Carrot motley dwarf (CMD)Carrot redleaf virus (CRLV)

+ Carrot mottle virus (CMoV)

Symptoms

• Yellow and red leaves; stunted plant growth

Root knot nematode Meloidogyne spp.

Symptoms

• Galls on roots which can be up to 3.3 cm (1 in) in diameter but are usually smaller; reduction in plant vigor; yellowing plants which wilt in hot weather