Source: Syngenta news release

Agrisure RW hybrids are accepted tools for boosting yields in corn crops with corn rootworm pressure. However, new data from Syngenta indicates hybrids containing the Agrisure RW trait, such as the Agrisure 3000GT triple stack, may generate incremental yield increases even in the absence of such pest pressure, and especially under stress conditions such as drought.

Syngenta strip trials1 in 2007 and 2008 compared yield performance of either Agrisure 3000GT hybrids or Agrisure CB/LL/RW hybrids to their respective Agrisure CB/LL isolines. Following a crop other than corn and using local best management practices, the hybrids containing the Agrisure RW trait posted an average 3 bu/A gain over their non-rootworm-traited counterparts. The yield gains were even higher in continuous corn situations. There, the Agrisure RW hybrids yielded an average of 4.6 bu/A more than their non-RW comparison hybrids. Managed stress testing environments lead to an even greater yield advantage at 10.6 bu/A2.

Syngenta Agronomy Marketing Manager Bruce Battles cites several factors in the performance of the Agrisure RW hybrids. "Trials indicate hybrids with the Agrisure RW trait appear to have improved yield potential compared to controls under stressful environments without rootworm pressure," Battles said. "In addition, the data indicates that the Western corn rootworm variant, and the Northern corn rootworm extended diapause, are expanding. As a result, you may have fields where the corn rootworm pressure is either underestimated, or not even acknowledged."