Onion White Rot: Complete Treatment Guide

Onion White Rot

What is Onion White Rot?

Symptoms

  • White fungal growth
  • Black sclerotia
  • Yellowing leaves
  • Root rot
  • Easy plant pull
  • Progressive decay

What Causes Onion White Rot?

  • Sclerotium cepivorum
  • Cool temperatures
  • Moist soil
  • Previous infection
  • Long soil survival
  • Host presence

How to Treat Onion White Rot

Organic Treatments

  • Beneficial fungi
  • Long rotation
  • Soil solarization
  • Clean practices
  • Resistant varieties
  • Organic amendments

Chemical Treatments

  • Soil fungicide
  • Pre-plant treatment
  • Systemic fungicides
  • Protective sprays

Cultural Controls

  • Crop rotation
  • Clean equipment
  • Disease-free soil
  • Proper drainage
  • Plant spacing
  • Field selection

How to Prevent Onion White Rot

  • Long rotation
  • Clean practices
  • Soil testing
  • Field selection
  • Disease-free sets
  • Regular monitoring

Recommended Fertilizers for Onion White Rot

  • Beneficial fungi
  • Soil improvers
  • Root stimulants
  • Plant strengtheners