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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

Alternaria Leaf Spot: Alternaria spp. Symptoms The pathogen affects leaves, stem, pods and seeds. Symptoms of the disease first appear on the leaves of seed stem in the form of small, yellowish, slightly raised lesions. Lesions appear later on the stems and seed pods. Infection spreads rapidly during rainy weather, and the entire pod may be so infected that the styler end becomes black and shrivelled. The fungus penetrates in pod tissues, ultimately infecting the seeds. The infected seed fails to germinate. Management Spraying with Mancozeb 0.25 %
  • The pathogen affects leaves, stem, pods and seeds.
  • Symptoms of the disease first appear on the leaves of seed stem in the form of small, yellowish, slightly raised lesions.
  • Lesions appear later on the stems and seed pods. Infection spreads rapidly during rainy weather, and the entire pod may be so infected that the styler end becomes black and shrivelled.
  • The fungus penetrates in pod tissues, ultimately infecting the seeds. The infected seed fails to germinate.

Management

  • Spraying with Mancozeb 0.25 %