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ANTHRACNOSE OF POMEGRANATE

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DharaniTamilmaran

Pomegranate anthracnose is caused by the fungus Colletotrichum gleosporioides. It causes spotting and rotting of pomegranate fruits, reducing both price and quality. The fungus is found worldwide in tropical regions and spreads via infected leaves and wind-borne spores. High temperatures and humidity provide favorable conditions for growth of the pathogen. Chemical management includes fungicide sprays while biological control uses competitive fungi.

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COLLEGE OF AGRICULTURAL TECHNOLOGY (Affiliated to Tamil Nadu Agricultural University, Coimbatore-3) Kullapuram (Po),ViaVaigai D Pomegranate anthracnose Colletotrichum gloesporioides STUDENT Miss KARISHMAA C ID. No. 2015021054 COURSE TEACHER Dr. PARTHASARATHY S Asst. Professor (Plant Pathology)
INTRODUCTION Pomegranate anthracnose is a severe disease in karnataka it causes spotting and rot of pomegranate fruit leading to decrease in price and quality.
Taxonomic classification Kingdom: Fungi Phylum : Ascomycota Class :Sordariomycetes Order : Incertae sedis Family : Glomerellaceae Genus :Colletotrichum Species : C gleosporioides
Occurrence and distribution This organism is found worldwide in almost all the countries particularly in perennials in tropical regions.
History Colletotrichum gleosporioides was first isolated from Trinidad and Mexico. Butler (1918) reported colletotrichum gleosporioides for the first time in India causing leaf spot in coffee.Mc Rae reported it as causitive agent for mango anthracnose.
Host Citrus, yam, papaya, avocado, coffee, eggplant, sweet pepper and tomato.
Favourable conditions High temperature and high humidity are favourable for the growth of the pathogen. Germination of the spores require high humidity. when the moisture content is high acervuli is able to release spores. The fungus is not active during dry weather.
Symptoms Small , regular to irregular black spots on leaves, calyx region and fruits which turn later on as dark brown depressed spots. Infected leaves turn yellow and drop off.
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息沿鉛温稼岳庄恰.稼艶岳
Mode of spread Primary spread : Infected leaves Secondary spread :Wind borne conidia
Disease cycle 息sciencedirect.com息
Chemical management Carbendazim /Difenconaole or Thiophanate methyl @ 0.1%. Chlorothalonil 0.2% spray at forty night intervals. Spraying of Prochloraz 45 EC @ 0.75ml/lit were effective against anthracnose.
Biological management Known biocontrol agents are competitive fungi Aspergillus flavus, Hypocrea rufa, Hyponectria tuberculariformis and Nectriella muelleri.
References H.W. Anderson, Diseases of Fruit Crops , 2nd edition, J.V Publishing house. Pg (172 173) T.S. Thind , Diseases of Fruit and Vegetabes and their Management, Kalyani Publishers.Pg(26 30) www.agriportal.com

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ANTHRACNOSE OF POMEGRANATE

  • 1. COLLEGE OF AGRICULTURAL TECHNOLOGY (Affiliated to Tamil Nadu Agricultural University, Coimbatore-3) Kullapuram (Po),ViaVaigai D Pomegranate anthracnose Colletotrichum gloesporioides STUDENT Miss KARISHMAA C ID. No. 2015021054 COURSE TEACHER Dr. PARTHASARATHY S Asst. Professor (Plant Pathology)
  • 2. INTRODUCTION Pomegranate anthracnose is a severe disease in karnataka it causes spotting and rot of pomegranate fruit leading to decrease in price and quality.
  • 3. Taxonomic classification Kingdom: Fungi Phylum : Ascomycota Class :Sordariomycetes Order : Incertae sedis Family : Glomerellaceae Genus :Colletotrichum Species : C gleosporioides
  • 4. Occurrence and distribution This organism is found worldwide in almost all the countries particularly in perennials in tropical regions.
  • 5. History Colletotrichum gleosporioides was first isolated from Trinidad and Mexico. Butler (1918) reported colletotrichum gleosporioides for the first time in India causing leaf spot in coffee.Mc Rae reported it as causitive agent for mango anthracnose.
  • 6. Host Citrus, yam, papaya, avocado, coffee, eggplant, sweet pepper and tomato.
  • 7. Favourable conditions High temperature and high humidity are favourable for the growth of the pathogen. Germination of the spores require high humidity. when the moisture content is high acervuli is able to release spores. The fungus is not active during dry weather.
  • 8. Symptoms Small , regular to irregular black spots on leaves, calyx region and fruits which turn later on as dark brown depressed spots. Infected leaves turn yellow and drop off.
  • 11. Mode of spread Primary spread : Infected leaves Secondary spread :Wind borne conidia
  • 13. Chemical management Carbendazim /Difenconaole or Thiophanate methyl @ 0.1%. Chlorothalonil 0.2% spray at forty night intervals. Spraying of Prochloraz 45 EC @ 0.75ml/lit were effective against anthracnose.
  • 14. Biological management Known biocontrol agents are competitive fungi Aspergillus flavus, Hypocrea rufa, Hyponectria tuberculariformis and Nectriella muelleri.
  • 15. References H.W. Anderson, Diseases of Fruit Crops , 2nd edition, J.V Publishing house. Pg (172 173) T.S. Thind , Diseases of Fruit and Vegetabes and their Management, Kalyani Publishers.Pg(26 30) www.agriportal.com