Common names

Scientific names

Diseases

iris yellow spot virus

onion black mold

Aspergillus niger

onion neck rot, (gray mold)

Botrytis allii

onion plate rot

Fusarium oxysporum

onion translucent scale

powdery mildew

Leveillula taurica

potato late blight

Phytophthora infestans

Insects

cereal leaf beetle

Oulema melanopus

lygus bug

Lygus hesperus

onion maggot

Delia antiqua

onion thrips

Thrips tabaci

pea aphid

Acyrthosiphon pisum

seed corn maggot

Delia platura

spidermite

Tetranychus spp.

stinkbug

Pentatomidae spp. 

sugar beet root maggot

Tetanops myopaeformis

western flower thrips

Franklinella occidentalis

willow sharpshooter

Graphocephala confluens (Uhler)