this is the poster on the economically important and some minor diseases of vegetable okra and fruit pomegranate. Diagnostic disease symptoms are also include along with their pathogen which helps in the identification of the respective diseases.

1. DIAGNOSTIC SYMPTOMS OF DISEASES OF POMEGRANATE AND OKRA
Arjun Rayamajhi
Department of Plant Pathology
Agriculture and Forestry University (AFU), Rampur, Chitwan
OkraPomegranate
1. Cercospora leaf spot
Etiology: Cercospora abelmoschi (Sooty black angular leaf spot)
C. malayensis (Brown irregular leaf spot with grey centre and red to purple boarders),
C. hibiscina (dark olivaceous patches on the lower surface of leaf)
2. Powdery mildew
Etiology: Erisiphe cichoracearum (Oidium
asterie-punicae
Symptoms: Greyish powdery growth on the
under as well as upper surface of leaf
3. Okra Yellow Vein Mosaic
Etiology: Yellow vein mosaic virus (YVMV)
Symptoms: Yellowing of entire network of veins in the leaf blade at any stage of plant.
Transmitted by whitefly (Bemisia tabaci)
1. Cercospora fruit rot
Etiology: Cercospora punicae
Symptoms: Light brown spot
with zoonation on the leaves
and fruit
2. Cercospora fruit rot
Etiology: Xanthomonas
axonopodis pv. punicae
Symptoms: Small water-
soaked dark colored irregular
spot on leaves and fruit.
L- shaped cracking on fruit on
severity
3. Bitter rot/ Anthracnose
Etiology: Colletotrichum
gleosporiodes
Symptoms: Minute sunken spot
of brown to blackish on stem,
flowers, fruits with more or less
marked yellow hallo
4. Altenaria black fruit rot/
Heart rot/ Black heart
Etiology: Alternaria alternate
Symptoms: Small, reddish
brown or black circular spot
surrounded by green yellow
hallo on fruits and leaves.
Comparison of Disease symptoms post harvest
diseases of pomegranate. a, fruit spots
(Aspergillus niger); b, c, Black spots (Alternaria
alternata) and d, e, f, fruit blotches (Alternaria
alternata, Alternaria spp.).
4. Aspergillus fruit rot
Etiology: Aspergillus foetidus
Symptoms: Round black
spots starting from calyx and
gradually entire fruit show
black spot.
5. Wilt of Pomegranate:
Etiology: Ceratocystis fimriata
Symptoms: Yellowing of lower foliage or branches to complete defoliation, stem cracks vertically,
in cross-section dark greyish brown discoloration of wood.
A (Alternaria
alternata ‘heart rot’),
B (Aspergillus niger
‘fruit rot’), C
(Aspergillus niger
‘heart rot’), D
(Botrytis cinerea
‘greymould’), E
(Penicillium spp.
‘blue mould’), and F
(Coniella granatai),
G (Rhizopus
stolonifer ‘fruit rot’),
H (Xanthomonas
axanopodis pv
punicae ‘Bacterial
blight rot’), I
(Xanthomonasaxano
podis pv punicae
‘Bacterial blight
rot’), J
(Colletotrichum
gloeosporioides
‘Anthracnose’) and K
Ceratocystis spp.
(‘Wilt’).
7. Phyllostica leaf spot
Etiology: Phyllostica sp.
Symptoms: Large irregular shaped
leafspot with tan spot
8. Damping off
Etiology: Pythium spp., Rhizoctonia solani
Symptoms: Characteristic water-soaked lesions
formed at or below the soil line, expanding lesions
quickly girdle young and tender stems
4. Fusarium wilt
Etiology: Fusarium oxysporium f.sp. vasinfactum
Symptoms: Typical wilting beginning with yellowing, if stem split lengthwise, vascular
bundle appears as dark streak
6. Charcoal rot
Etiology: Macrophomina
phaseolina
Symptoms: Discoloration
of stem at soil line;
cankers on stem spread
upwards; numerous black
sclerota develop in
affected tissue.
5. Bacterial blight
Etiology: Xanthomonas campestris pv.
malvacearum
Symptoms: Vein blackening.
Watersoaked, vein restricted, angular
leafspot more obvius on underside of
leaves. Spots on pods are round, shiny,
more waxy and oily