Rough bollworm
Earias huegeliana
Larvae are up to 18mm long, thickset, mottled grey and brown with irregular yellow-orange spots in rows along the back. Moths are 11mm long and are off-white with a green or brown stripe on the forewing. Eggs are initially blue-green and difficult to find.
Damage: Most severe damage occurs when the larvae feed inside the green boll resulting in the loss of that boll section. Feeding sites can also allow the entry of boll-rotting fungi. Larvae can attack squares and young bolls resulting in shedding. Initial symptoms can be tunnelling into the growing point, destroying it.
Pesticides
Alpha-Scud Elite
intensity: ★★★
Altacor
intensity: ★★★
Arrivo 250 EC
intensity: ★★★
Arrivo 40 ULV
intensity: ★★★
Cyrux 200 EC
intensity: ★★★
Cyrux 250 EC
intensity: ★★★
Dominex 16 ULV
intensity: ★★★
Dominex Duo
intensity: ★★★
Fastac Duo
intensity: ★★★
Fury 14 ULV
intensity: ★★★
Rotam Hitraz 200 EC/ULV
intensity: ★★★
Unichoice 100 EC
intensity: ★★★
Alpha Duo 100
intensity: N/A
Alpha Forte 250 SC
intensity: N/A
Alphasip Duo100
intensity: N/A
Endosulfan 350
intensity: N/A
Mascot Duo
intensity: N/A