Fly speck
Zygophiala jamaicensis (Schizothyrium pomi)
Flyspeck is a disease of maturing apples, caused by the fungus Zygophiala jamaicensis (also known as Schizothyrium pomi). Spores germinate when temperatures are between 60 and 83 degrees Fahrenheit (15-28 C.) for about 15 days, and relative humidity exceeds 95 percent. Flyspeck apple disease appears on fruits as a series of tiny black dots, typically in groups of 50 or more.
The fungus responsible for flyspeck overwinters on apple twigs, but may be blown in from wild sources or other fruit trees for a period lasting up to two months around bloom time.
Pesticides
Dithane Rainshield Neo Tec
intensity: ★★★
Frenta 750 WG
intensity: ★★★
Manzate DF
intensity: ★★★
Penncozeb
intensity: ★★★
Penncozeb 750 DF
intensity: ★★★
Polyram DF
intensity: ★★★
Rotam Winner Mancozeb WP
intensity: ★★★
Unizeb Disperss 750 DF
intensity: ★★★
Arysta LifeScience Mancozeb 750 WG
intensity: N/A
Manco 750 WG
intensity: N/A
Mancoflo
intensity: N/A
Mankocide DF
intensity: N/A
Manzeb
intensity: N/A