Date post: | 15-Apr-2017 |
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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