YieldGard® Plus, YieldGard VTTM & HerculexTM Xtra Corn Common Refuge Configuration Options
When planting a refuge that will serve as a common refuge for corn borers and corn rootworms, the 2008 growing season requirements are as follows:
- When using a common refuge plan, in corn growing regions, plant up to 80 percent of corn acres with YieldGard® Plus, YieldGard VTTM & HerculexTM Xtra corn hybrids on each farm. Plant at least 20 percent of the corn acres to a corn refuge that does not contain a B.t. technology.
- The common refuge can be treated for corn rootworm larvae and other pests with soil-applied, seed-applied, or foliar-applied insecticides.
- If a late season pest such as corn borer reaches the economic threshold, the common refuge may be treated with a non-B.t. insecticide to control the pest, however the YieldGard® Plus, YieldGard VTTM & HerculexTM Xtra corn must also be treated if rootworm beetles (adults) are present at the time of the foliar application.
- Corn planted in the common refuge may be Roundup Ready® Corn 2 or conventional corn, but may not be B.t. corn.
- The common refuge must be planted within or adjacent to the YieldGard® Plus, YieldGard VTTM & HerculexTM Xtra corn fields. The refuge can be separated by a ditch or a road, but not by another field. Alternatively, the refuge may be planted as in-field or perimeter strips. These strips must be at least six consecutive rows wide, but preferably 12 rows wide.
- Plant a refuge on every farm where YieldGard® Plus, YieldGard VTTM & HerculexTM Xtra corn hybrids are planted.
- Plant the refuge at the same time as the YieldGard® Plus, YieldGard VTTM & HerculexTM Xtra Corn corn.
- Mixing non-B.t. seed with YieldGard® Plus, YieldGard VTTM & HerculexTM Xtra corn seed for use as a refuge is not permitted.
- Plant the refuge and the YieldGard® Plus, YieldGard VTTM & HerculexTM Xtra corn hybrids to fields with a similar crop history. For example, if the field planted to YieldGard® Plus, YieldGard VTTM & HerculexTM Xtra corn was corn the previous year, then the refuge must also be planted in a field that was also planted to corn the previous year.
- Refuge fields must be owned or managed by the grower.
Download the 2008 Monsanto Technology Use Guide 
Download the Herculex Product Use Guide
Growers should refer to Monsanto's Technology Use Guide for the most complete information on crop stewardship and refuge configuration options.
Growers should refer to the Herculex Product Use Guide for the most complete information on crop stewardship and refuge configuration options.
YieldGard® Corn Borer & HerculexTM I Corn Refuge Configuration Options
The refuge on each farm may be arranged in a number of configurations. These
options offer the flexibility to easily incorporate an effective corn refuge
into farm operations.
Options include:
- Plant a separate corn refuge within 1/2 mile of each YieldGard® Corn Borer & HerculexTM I corn field (1/4 mile or closer preferred).
- Plant 20 percent refuge in a block within a YieldGard® Corn Borer & HerculexTM I corn field.
- Plant field perimeters or end rows to a corn refuge.
- Split the planter to alternate four or more consecutive rows of refuge corn with YieldGard® Corn Borer & HerculexTM I corn (6 rows preferred).
Download the 2008 Monsanto Technology Use Guide
Download the Herculex Product Use Guide
Growers should refer to Monsanto's Technology Use Guide for the most complete information on crop stewardship and refuge configuration options.
Growers should refer to the Herculex Product Use Guide for the most complete information on crop stewardship and refuge configuration options.
