Blueberry Maggot

Harvesting

Harvesting techniques that reduce fruit loss can minimize the number of infected fruit left on the plants and on the ground. Avoid edges as higher infestations occur there.  Allowing infected fruit to drop before harvest will increase fly populations and future losses.

Clean Winnow Piles

Compost, burn or dispose of winnower refuse or hot spots of fly emergence will be created.

Keep all fields in same cycle

Since 90% of the flies emerge from the previous crop field, having all fields in the same locale will deny flies fruit and reduce maggot infestation.

Flea beetle, Spanworm,
Sawfly, Tip midge

Fire pruning

Blueberry litter must be ignited, if too wet then will have incomplete sanitation.

Thrips

Fire pruning

Burn curled stems as soon as extensive curling occurs in early spring but before June 1.

BioControl
Spanworm
BT(Bacillus thuringiensis)

Micotrol-0
(Beauveria bassiana)

Entrust

Multiple labels

1 qt/acre

2 oz/acre

Apply to small early instar larvae for best control. Larval death not immediate, but feeding quickly inhibited. May use when bees pollinating.

Do not apply when bees are actively foraging, toxic to bees. Best results occur when applications are made in the evening since sunlight kills the Beauveria spores over time.

Do not apply when bees are actively foraging toxic to bees for 3 hours after application.

Flea beetle
Strawberry rootworm

Micotrol-0
(Beauveria bassiana)

Entrust

1 qt/acre

2 oz/acre

Apply at 7-10 day intervals in evening. Flea beetle larvae only.  Best results occur when applications are made in the evening since sunlight kills the Beauveria spores over time. 

Do not apply when bees are actively foraging, toxic to bees.


Do not apply when bees are actively foraging toxic to bees for 3 hours after application.

Monolinia Blight

Botyrytis Blight

Fire pruning

Mulch

Blueberry litter must be ignited, if too wet then will have incomplete sanitation.

A 2-inch layer of mulch will prevent germination of mummies.