In soybean, insecticide termination is determined by reproductive growth stage, primarily between R6 (full seed) and R7 (beginning maturity). Correctly identifying these stages is critical for deciding when additional insecticide applications are unlikely to provide an economic return.
Recommended termination stages by pest include:
- Podworms (corn earworm): R6
- Stink bugs: R6.5 (7 -10 days after R6)
- Defoliating caterpillars (soybean looper, green cloverworm, velvetbean caterpillar, and saltmarsh caterpillar): R6.5
- Armyworms: R6.5
- Bean leaf beetles: R6.5
