List of diseases and pests

Asteraceae

 Fungi and Oomycetes

• Cercosporosis of lettuce ( Cercospora longissima )
• Damping off  
• Downy mildew (Bremia lactucae)
• Sclerotium rots ( Sclerotium rolfsii )
• Crown rot ( Sclerotinia sclerotiorum )
• Rhizoctone brun ( Rhizoctonia solani )
• Septoriose de la salade ( Septoria lettuce )

bacteria

• Bacterial rot  ( Pectobacterium carotovorum )

Virus

• Tomato spotted wilt virus (TSWV)

Nematodes

• Root-knot nematodes ( Meloidogyne spp.)

Insects

• Leafminer flies ( Liriomyza spp.)
• Thrips  

Others

• slugs
• Snails  

Non-parasitic diseases

• Marginal necrosis