Australia

Freckle

Venturia carpophila

Scab can affect fruit, leaves and shoots. It first appears on fruits as small dark spots about six to eight weeks after petal fall. On mature fruits, the fungus forms small, circular, sooty-brown spots or freckles which become scabby. These can merge to form large, irregular dark brown lesions. When infection is severe, the fruit can crack, shrivel and fall prematurely. On apricot fruit the disease should not be confused with Shot-hole, which causes raised scabs on the fruit surface; by contrast Scab lesions are pale green and remain flush with the fruit surface. On peaches, lesions are flat, circular black spots up to 3 mm in diameter. When nectarines are affected, the skin loses its pigment and becomes pale green to cream in colour. The centre of each spot is dark with the development of spores.

Leaf infections appear as sooty or olive blotches on the underside of leaves, and as dark lesions running along the mid-rib and petiole. Severe leaf infection can cause defoliation, but in some cases, little or no leaf infection can be found even when the fruit is badly affected. On the shoots, small brown lesions with slightly raised margins may appear. The margins of these lesions become olivaceous where the pathogen is sporulating.

Pesticides
Aprisco 900 WG
intensity: ★★★
Bravo
intensity: ★★★
Bravo Weather Stik
intensity: ★★★
Cavalry Weatherguard
intensity: ★★★
Cherokee 900
intensity: ★★★
Conan 500
intensity: ★★★
Conan 720 SC
intensity: ★★★
Cupro Isagro 375 WG
intensity: ★★★
Cuprofix Bordeaux Mixture
intensity: ★★★
Cuprofix Disperss Bordeaux Mixture
intensity: ★★★
Delan 700 WG
intensity: ★★★
Dithane Rainshield Neo Tec
intensity: ★★★
FMC Chlorothalonil 720
intensity: ★★★
FMC Chlorothalonil Bond 720
intensity: ★★★
Fontelis
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 Aprisco
intensity: ★★★
Rotam Winner Mancozeb WP
intensity: ★★★
tradewyns Blu-Cop 400DF
intensity: ★★★
Uniguard 500 WP
intensity: ★★★
Unizeb Disperss 750 DF
intensity: ★★★
Ziram Granuflo
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 Thiram DG
intensity: N/A
Barmec Ziram DG
intensity: N/A
Barrack Betterstick
intensity: N/A
Blue Shield DF
intensity: N/A
Chlornil 720 SC
intensity: N/A
Chloronil Pro
intensity: N/A
Chlorothalonil
intensity: N/A
Clash Dry 900 WG
intensity: N/A
Clash Storm Guard 720 SC
intensity: N/A
Copper Oxychloride
intensity: N/A
Cuprofix Crop Care Australasia
intensity: N/A
Dragon 700 WG
intensity: N/A
Echo 720
intensity: N/A
Isagro Neoram 375 WG
intensity: N/A
Liquicop
intensity: N/A
Manco 750 WG
intensity: N/A
Mancoflo
intensity: N/A
Manzeb
intensity: N/A
Pacific Echo 500 SC
intensity: N/A
Thiragranz
intensity: N/A