| Field experiments were conducted in Stoneville, MS and Sidon, MS in 2016 and 2017 to evaluate a new transgenic cotton variety (MON 88702) (Cry51Aa2.834_16) and its effects on tarnished plant bug, Lygus lineolaris (Palisot de Beauvois), populations, frequency of insecticide applications, and yield. Experiments were designed to compare the interactions between the Bt traited plots and non-traited plots and the insecticide spray treatments, which consisted of different application thresholds as well as treatments sprayed only during the early season and only during the late season. MON 88702 provided a significant reduction in later instar tarnished plant bug nymphs, dirty squares, and insecticide applications, especially during the late season. MON 88702 also provided a significant increase in yield compared to non-traited plots. By implementing this transgenic approach, the number of insecticide applications necessary to effectively manage tarnished plant bug will be reduced compared to non-transgenic isolines, while also protecting yield. |
