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Agricultural crops :: Cereals :: Maize

 Pythium stalk rot: Pythium aphanidermatum

Symptoms
  • Usually the basal internodes become soft, dark brown water soaked, causing the plants lodge.
  • Damaged internodes commonly twist before the plants lodge.  Diseased plants can remain alive until all vascular bundles become affected.
  • Isolations in culture media are necessary to differentiate Pythium from Erwinia stalk rots.
Management
  • Planting time between 10 & 20 July in Northern India.
  • Maintain plant population around 50,000/ha.
  • Good field drainage.  
  • Removal of previous crop debris.
  • Soil drench with Captan at basal internode (5-7week growth stage)@ 1g/lit of water.
  • Resistant varieties – Ganga,  Safed 2

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