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YieldGard VT Triple™ corn technology combines YieldGard Corn
Borer and YieldGard VT Rootworm/RR2 technology into a single plant.
YieldGard VT Triple corn hybrids control European and southwestern
corn borer, sugarcane borer, southern corn stalk borer, western corn
rootworm, northern corn rootworm, and Mexican corn rootworm.
YieldGard VT Triple hybrids will also provide intermediate protection
against corn earworm, fall armyworm, and stalk borer. By providing
in-plant protection against the above insect pests, the genetic yield
potential of YieldGard VT Triple corn hybrids is preserved.
YieldGard VT Triple corn hybrids also include Roundup Ready 2
Technology. This trait allows a grower to experience the benefits of
utilizing Roundup agricultural herbicides in a weed control system that
provides the broadest weed control spectrum available, along with better
application fl exibility, and superior crop safety.
YieldGard VT Triple containing seed is treated with seed applied
insecticides.**
**A seed-applied insecticide can protect seed, roots and seedlings from
insects such as black cutworm, wireworm, white grubs, seedcorn
maggots, chinch bug and early flea beetles.
Refuge Planting Requirements
Any corn hybrid that does not contain a B.t. technology for control of
western, northern, and Mexican corn rootworm and is planted within
or adjacent to the stacked B.t. technology corn can serve as a refuge for
corn rootworm. Any corn hybrid that does not contain a B.t. technology
for control of European and southwestern corn borer and is planted
within 1⁄2 mile (1⁄4 mile preferred) of the stacked B.t. technology corn
field can serve as a refuge for corn borer.
- Plant a refuge on every farm where stacked B.t. technology corn
hybrids are planted.
- Plant the refuge at the same time as stacked B.t. technology corn.
- Mixing non-B.t. seed with stacked B.t. technology seed for use in the
refuge is not permitted.
- If the refuge is planted on rotated ground, then stacked B.t.
technology corn must also be planted on rotated ground.
- If the refuge is planted in continuous corn, then the stacked B.t.
technology corn field can be planted on either continuous or rotated
ground.
- Adjacent and separate refuge fi elds must be owned or managed by the
same grower planting stacked B.t. technology.
Common Refuge
The first option is to plant a common refuge that will serve as the refuge
for both corn borer and corn rootworm. The common refuge must be
planted with corn hybrids that do not contain B.t. technologies for the
control of corn borer or corn rootworm.
Common Refuge Requirements
On each farm, up to 80 percent of corn acres can be planted with
stacked B.t. technology corn. The refuge area must represent at least 20
percent of the grower’s corn acres (stacked B.t. technology acres plus
any non-B.t. acres) as shown below. The refuge can be within or adjacent
to the stacked B.t. technology field and can be planted as a block,
strips within the field, or as a perimeter around the field. If perimeter or
strips are used for the refuge, the strips must be at least four consecutive
rows wide.
Common Regude Configuraton Options
Please refer to the YieldGard IRM Guide for complete refuge configurations options.
 
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