Monitoring for Pyrethroid Resistance in the Bollworm (<i>Helicoverpa zea</i>) in Texas: Trends from 2003-2005

Fig. 1. Highest LC50 and LC90 estimated values (µg cypermethrin/vial) in Texas (2005) by county, with corresponding resistance ratios shown above the histogram bars. Significant (P < 0.05) resistance ratios in red. LC90s correspond to the same date when the highest LC50 was detected.



Image from Plant Health Progress article:
Monitoring for Pyrethroid Resistance in the Bollworm (Helicoverpa zea) in Texas: Trends from 2003-2005