Citrus black spot
Guignardia citricarpa (Phoma citricarpa)
This Ascomycete fungus affects citrus plants throughout subtropical climates, causing a reduction in both fruit quantity and quality. Symptoms include both fruit and leaf lesions, the latter being critical to inter-tree dispersal. Strict regulation and management is necessary to control this disease since there are currently no citrus varieties that are resistant.
Leaf symptoms are only noticeable on highly susceptible citrus plants; lemons in particular. The symptoms generally develop from latent infections after the leaves have died. Red-brown, pin-point dots may develop into larger, circular necrotic lesions with gray centers and red or brown margins.
Pesticides
Amistar 250 SC
intensity: ★★★
Antracol
intensity: ★★★
Cupro Isagro 375 WG
intensity: ★★★
Cuprofix Bordeaux Mixture
intensity: ★★★
Cuprofix Disperss Bordeaux Mixture
intensity: ★★★
Dithane Rainshield Neo Tec
intensity: ★★★
Frenta 750 WG
intensity: ★★★
Isacop
intensity: ★★★
Kocide Blue Xtra
intensity: ★★★
Manzate DF
intensity: ★★★
Neoram 375 WG
intensity: ★★★
Ospray Copper Oxychloride-WP
intensity: ★★★
Penncozeb
intensity: ★★★
Penncozeb 750 DF
intensity: ★★★
Rotam Winner Mancozeb WP
intensity: ★★★
tradewyns Blu-Cop 400DF
intensity: ★★★
Uniguard 500 WP
intensity: ★★★
Unizeb Disperss 750 DF
intensity: ★★★
Arysta LifeScience Copper Oxychloride 50 WP Fungicide/Bactericide
intensity: N/A
Arysta LifeScience Copper Oxychloride WP Fungicide/Bactericide
intensity: N/A
Arysta LifeScience Mancozeb 750 WG
intensity: N/A
Barmac Copper Oxychloride
intensity: N/A
Barmac Zineb
intensity: N/A
Copper Oxychloride
intensity: N/A
Cuprofix Crop Care Australasia
intensity: N/A
Isagro Neoram 375 WG
intensity: N/A
Liquicop
intensity: N/A
Manco 750 WG
intensity: N/A
Mancoflo
intensity: N/A
Mankocide DF
intensity: N/A
Manzeb
intensity: N/A