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Pests of Gerbera – Kisan Suvidha
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Pests of Gerbera

Gerbera pests

Pests of Gerbera

Major pests of Gerbera are:-

1.Gerbera Root rot:  Rhizoctonia solani 

Symptoms:

  • The infection results in stunted growth.
  • Ultimately the entire plant dry. Rhizoctonia solani causes more losses and can attack older plants.

Management:

  • Soil sterilization controls the diseases.
  • Drenching with Pseudomonas fluorescens 2g/litre of water.

 

2.Gerbera Powdery mildew: Erysiphe chichoracearum and Oidium erysiphoides f.sp. gerbera

Symptoms:

  • The fungus forms a white powdery coating on the foliage.

 Management:

  • Spraying with 0.2% Wettable sulphur controls E. Chichoracearum.
  • Diseased leaves should be removed and destroyed.

 

3.Gerbera Anthracnose:  Colletotrichum gloeosporioides

Symptoms:

  • The disease appears as circular, scattered, reddish brown spots.
  • They coalesce with one another during moist weather involving large area and resulting in withering, rolling and drying of leaves.

 Management:

  • Excessive watering and crowding of plants should be avoided.
  • Diseased leaves should be collected and burnt.
  • Spraying with Pseudomonas fluorescens 2g/litre of water.

 

4.Gerbera Blossom blight:  Phytophythora palmivoras

Symptoms:

  • The disease appears as light brown, irregular, water-soaked spots on flower stalks and petals.
  • The spots increase rapidly and coalesce with one another and form distinct depressed lesions.
  • Under humid conditions, the infections become severe involving the entire flower head and resulting in blossom blight and stalk rot.
  • The disease is favoured by drizzling rains and cool moist weather.  The fungus is soil-borne and the infection starts from the base touching the soil.

Management:

  • Use of disease-free soil for cultivation reduces the disease incidence.
  • Affected flowers should be collected and destroyed.
  • Excessive watering should be avoided.

 

Source-

  • TamilNadu AgritechPortal.

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