Agritech Archive
Loading
Agritech ArchiveSkip to main contentAbout this archive
Text size
Crop guidance, searchable

Agritech Archive

Production · Protection · Nutrients · Water
In here
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

Symptoms

Downy mildew: Peronospora parasitica Symptoms It may attack young plants and also at the seed production stage as being commonly observed in northern India in recent years, when high humidity prevails during seed production stage. The fungus when attacks the young seedlings, discoloration occurs and in severe cases the whole plant perishes. Purplish leaf spots or yellow brown spots on the upper surface of the leaf appear, while fluffy downy fungus growth is found on the lower surface. Management Seed treatment with Metalaxyl (Apron 6g/kg of seed ) Foliar spraying with Metalaxyl (Ridomil) 0.4%.
  • It may attack young plants and also at the seed production stage as being commonly observed in northern India in recent years, when high humidity prevails during seed production stage.
  • The fungus when attacks the young seedlings, discoloration occurs and in severe cases the whole plant perishes.
  • Purplish leaf spots or yellow brown spots on the upper surface of the leaf appear, while fluffy downy fungus growth is found on the lower surface.

Management

  • Seed treatment with Metalaxyl (Apron 6g/kg of seed )
  • Foliar spraying with Metalaxyl (Ridomil) 0.4%.