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Production · Protection · Nutrients · Water
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1,513 crop protection pages, pest and disease by crop•98 crops tagged — rice, cotton, sugarcane, mango and more•261 nutrient management pages, deficiency symptoms and correction measures•3,462 data tables preserved from the source pages

Causal organism

Black Gram

Colletotrichum lindemuthianum

Field diagnostic symptoms
Circular, black, sunken spots with dark center and bright red orange margins on leaves and pods. Severe infections spread entire leaf gives blighted appearance Affected parts wither off. Causal organism Colletotrichum lindemuthianum Mycelium - hyaline, septate and branched Conidiophores - hyaline, short and unbranched Conidia - hyaline, one celled, oblong, cylindrical with rounded ends Perfect stage perithecia produce ascus contains 8 ascospores Conidia Survival and mode of spread Survival: Seed, plant debris and soil-borne Primary spread: Seed and plant debris Secondary spread: air-borne conidia Rain splash also helps in the dissemination of the fungus Favourable conditions Temperature : 15-20°C Relative humidity : Above 90 per cent Cloudy rainy weather Integrated disease management Remove and destruct plant debris Seed treatment with Carbendazim @ 2g/kg Spray any one of the following fungicides at initial symptom appearance Mancozeb 72 WP @ 1000g/ha Carbendazim 50% WP @ 500/ha Tebuconazole 50% + trifloxystrobin 25% WG @ 500 g/ha Tebuconazole 25.9% EC @ 500 ml/haAnthracnose infected plants
  • Circular, black, sunken spots with dark center and bright red orange margins on leaves and pods.
  • Severe infections spread entire leaf gives blighted appearance
  • Affected parts wither off.
  • Mycelium - hyaline, septate and branched
  • Conidiophores - hyaline, short and unbranched
  • Conidia - hyaline, one celled, oblong, cylindrical with rounded ends
  • Perfect stage perithecia produce ascus contains 8 ascospores

Survival and mode of spread

  • Survival: Seed, plant debris and soil-borne
  • Primary spread: Seed and plant debris
  • Secondary spread: air-borne conidia
  • Rain splash also helps in the dissemination of the fungus

Favourable conditions

  • Temperature : 15-20°C
  • Relative humidity : Above 90 per cent
  • Cloudy rainy weather

Integrated disease management

  • Remove and destruct plant debris
  • Seed treatment with Carbendazim @ 2g/kg
  • Spray any one of the following fungicides at initial symptom appearance