PHOENIX DISEASES
PHOENIX DISEASES
False smut or leaf scab causes formation of yellow leaf spots followed by small black scabs or warts. Syringing spreads the disease.
Leaf spot is most serious in poorly lit greenhouses. The spots are small, round, yellowish and transparent. The spots may run together to form large, irregular, gray-brown blotches. If numerous, these may cause death of the leaf. Syringing may spread this disease.
