White rot: Fungal invasion on the bulb
Pathogen: Sclerotium cepivorum Symptoms Numerous sclerotia form on the diseased tissues. As the fungus invades the root system and basal...
White rot: Affected bulb with Sclerotium sp.
Pathogen: Sclerotium cepivorum Symptoms Affected bulbs may become watery, and outer scales crack as they dry and shrink. Thick white...
White rot: Water soaked bulb white mycelial growth
Pathogen: Sclerotium cepivorum Symptoms Thick white fungal growth will be seen on the roots and the bottom of the bulb. The bulbs become...
White rot: Yellowing and dieback of leaf tips
Pathogen: Sclerotium cepivorum Symptoms Leaves become yellow and wither. The initial symptoms are yellowing and dieback of leaf tips....
White rot: Black sclerotia around the neck of the bulb
Pathogen: Sclerotium cepivorum Symptoms Innumerable small black sclerotia form in the fungal growth and on the affected parts. Fluffy...
White rot: Soft rot development at the base of the bulb
Pathogen: Sclerotium cepivorum Symptoms A soft rot gradually develops in the bulb and a thick white mycelial growth develops on the base...
White rot: Fungal growth on the base of the bulb
Pathogen: Sclerotium cepivorum Symptoms A thick white fungal growth will be seen on the roots and the bottom of the bulb when an infected...
Stemphylium blight: Black fruiting bodies on leaves
Pathogen: Stemphylium vesicarium Symptoms Initially small, light yellow to brown, watery spots appears on the affected leaves which later...
Stemphylium blight: Affected onion plants in field
Pathogen: Stemphylium vesicarium Symptoms Initial infections on the leaves and leaf sheaths are small, light yellow to brown, and...
Stemphylium blight: Leaves dry at the edges with dark spots
Pathogen: Stemphylium vesicarium Symptoms Dark spots on the ends of dying stems can be seen. The leaves and leaf sheaths are small, light...