July 18, 2018
Trap catch numbers showed increased bollworm moth activity at the Elmore and Baldwin county trapping sites. Cotton growers across AL should begin monitoring their dual-gene cotton closely for bollworm larvae . Non-Bt cotton has been planted in small plots/strips at Auburn University experiment stations in north, central and south Alabama to serve as sentinel plots for increased bollworm activity. Extension personnel will begin looking at these plantings this week. Four to 6 row strips of non-Bt cotton have also been planted in 4 grower fields in Lawrence and Colbert Counties to serve as sentinel plots. The 3 non-Bt cotton plantings in Lawrence county were inspected on July 16 and no bollworm larvae were detected. Two newly emerged bollworm moths were seen while inspecting the sentinel plantings. Reports indicate bollworm moth activity in Tennessee Valley cotton fields has been light to date with only a very few moths observed in cotton fields. Trap catch numbers at Belle Mina and near Hillsboro have been very low during the last 7 days. Historically, the bollworm moth flight in the Tennessee Valley has begun in either the last week in July or the first week in August. However, in 2017 a few cotton fields required treatment for bollworms during the 3rd week in July in northwest AL.
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