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Symptoms:
This is a very serious disease of pomegranate plants
affecting leaf and fruits. Pathogen causes irregular,
scattered, yellowish spots on leaves having a halo
around at the early stage, subsequently the spots
increase in size and form bigger patches and become
blackish. The lesions are covered with dull white crust
of fungal growth. Severe infection of the disease leads
to defoliation and hampers plant growth. On flower buds
brownish black irregular small spots appear which grow
in size along with the fruit. Spots become deeper and
more prominent. At greenish stage of fruit, reddish
irregular dots/spots develop on the fruits. The spots
get covered with deposit of ash colored spores under
favorable humid conditions. Mature fruits show numerous
black, irregular, slightly corky patches of the infected
hard necrotic tissue. Severely infected fruits show
cracking at times. Disease is severe in high humidity
areas and during rainy season.
Management :
Hexaconazole (Contaf 0.1%) or carbendazim (Bavistin
0.1%) or thiophanate methyl (Topsin M or Roko 0.1%)
sprayings control the disease. First spray at flower bud
stage and subsequently 8-9 sprays at 7-10 days interval
depending upon the weather conditions. Among
non-systemic fungicide Chlorothalonil (Kavach 0.2%) or
Mancozeb (Indofil Dithane M 45 0.2%) also check the
disease.
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