Iris Yellow Spot Virus(IYSV) disease : Necrotic diamond-shaped lesion on leaves
Pathogen: Tomato Spotted Wilt Virus (Tospo virus group) Symptoms Appearance of necrotic diamond-shaped lesion. These lesions can be small...
Iris Yellow Spot Virus(IYSV) disease : Coalesced lesions on onion leaf
Pathogen: Tomato Spotted Wilt Virus (Tospo virus group) Symptoms Lesions can coalesce making unusual, irregular shaped, larger lesions...
Iris Yellow Spot Virus(IYSV) disease
Pathogen: Tomato Spotted Wilt Virus (Tospo virus group) Symptoms Lesions on onion leaves often appear more elongated than wide and are...
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...