Pink root rot: Undersized onion bulbs
Pathogen: Phoma terrestris (syn. Pyrenochaeta terrestris) Symptoms In severe cases the roots may die and the plants become weakened or...
Pink root rot: Roots turn pink or maroon
Pathogen: Phoma terrestris (syn. Pyrenochaeta terrestris) Symptoms Roots turn pink or maroon when infected.​ Leaf number and size are...
Pink root rot: Reduced size of onion bulb
Pathogen: Phoma terrestris (syn. Pyrenochaeta terrestris) Symptoms Reduced bulb size. Roots turn pink or maroon when infected.​ Leaf...
Pink root rot: Infected roots of onion
Pathogen: Phoma terrestris (syn. Pyrenochaeta terrestris) Symptoms Infected roots show a light pink color that become deeper pink or red...
Pink root rot: Roots develop pink color
Pathogen: Phoma terrestris (syn. Pyrenochaeta terrestris) Symptoms Onion roots develop pink color. May occur in seedling stage or mature...
Onion smut: Stunted growth of plant
Pathogen: Urocystis colchici and U. cepulae Symptoms Affected leaves may bend or twist abnormally and usually are shed prematurely....
Onion smut: Affected leaves with smut
Pathogen: Urocystis colchici and U. cepulae Symptoms Infected seedlings often die within six weeks of emergence. Dark areas can be seen...
Onion smut
Pathogen: Urocystis colchici and U. cepulae Symptoms When the plant grows lesions form on the leaf and any bulbs that form will be...
Onion smut: Seedlings infected with smut
Pathogen: Urocystis colchici and U. cepulae Symptoms Infected seedlings often die within six weeks of emergence. Dark areas can be seen...
Onion smut: Onions infected with smut
Pathogen: Urocystis colchici and U. cepulae Symptoms When the plant grows lesions form on the leaf and any bulbs that form will be...