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Planning for refuge crops

 

Refuge Crop

Growers planting Bollgard® 3 are required to grow a refuge crop that is capable of producing large numbers of Helicoverpa spp. moths which have not been exposed to selection to the Bt proteins Cry1Ac, Cry2Ab and Vip3A.

These unselected moths are expected to dominate matings with any survivors from Bollgard 3 crops and thus help to maintain resistance alleles to the Bt proteins Cry1Ac, Cry2Ab and Vip3A at low frequencies. For each area of Bollgard 3 a dryland grower is required to plant:

Crop

Conditions

% of Bollgard 3 area

Cotton Dryland or irrigated, sprayed conventional cotton 100
Dryland or irrigated, unsprayed conventional cotton 5
Pigeon pea Dryland or fully irrigated, unsprayed. Dryland pigeon peas can
only be planted with an approved plan from Monsanto Australia.
2.5

 

Dryland Bollgard 3 cotton refuge options for Central Queensland planted after October 31

Crop

Conditions

% of Bollgard 3 area

Cotton Dryland or irrigated, sprayed conventional cotton 100
Dryland or irrigated, unsprayed conventional cotton 10
Pigeon pea Dryland or fully irrigated, unsprayed. Dryland pigeon peas can
only be planted with an approved plan from Monsanto Australia.

A dryland refuge must be planted within the 2 week period prior to the first day of planting and be in the same row configuration as the Bollgard 3 cotton. For more information refer to the Bollgard 3 Resistance Management Plan.