Lettuce Downy Mildew: Complete Treatment Guide

Lettuce Downy Mildew

What is Lettuce Downy Mildew?

Symptoms

  • Yellow leaf spots
  • White fuzzy growth
  • Angular lesions
  • Leaf browning
  • Progressive spread
  • Quality reduction

What Causes Lettuce Downy Mildew?

  • Fungal infection
  • Cool temperatures
  • High humidity
  • Poor air flow
  • Leaf wetness
  • Weather conditions

How to Treat Lettuce Downy Mildew

Organic Treatments

  • Copper fungicide
  • Remove infected leaves
  • Improve airflow
  • Organic sprays
  • Plant spacing
  • Clean cultivation

Chemical Treatments

  • Systemic fungicide
  • Preventive sprays
  • Disease control
  • Regular treatment

Cultural Controls

  • Good air circulation
  • Proper spacing
  • Morning watering
  • Remove debris
  • Clean tools
  • Regular monitoring

How to Prevent Lettuce Downy Mildew

  • Resistant varieties
  • Proper spacing
  • Air circulation
  • Timing irrigation
  • Clean cultivation
  • Weather monitoring

Recommended Fertilizers for Lettuce Downy Mildew