Climate change brings armyworms back
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South Texas Farm & Ranch Show
Takes place Oct. 28-29
Victoria Community Center
Purchase tickets for luncheons by Monday, Oct. 26, at the extension office.
For more information, visit www.southtexasfarmandranchshow.com or call 361-575-4581
What a welcomed climate change we are having.
After more than 12 months of drought conditions, the recent rains have everyone talking and singing praises. While some areas, like Yoakum, recently received 11-inches of rain in one day, the majority of Victoria County now has received from 7- to 14-inches in several rains over the past month.
Grass is green again, pastures are growing and livestock are foraging on lush, high quality grass.
Along with lush pastures, comes yet another flush of armyworms. Armyworms have re-emerged and producers need to once again be on the lookout.
Many producers are attempting to make at least one cutting of hay and they may need to check their pastures frequently for armyworms.
The small larvae will chew the green layer from the leaves, creating a window pane effect. The first three instars cause very little feeding damage, while the last two instars consume 85 percent of the total foliage consumed, usually within two to four days.
Thresholds in improved pastures vary with conditions but typically, treatment should be considered when counts average three or more worms per square foot. Insecticide choices labeled for use for armyworms in pastures include: Carbaryl (Sevin), Karate Z, Mustang Max, Baythroid XL, Malathion, Methly parathion 4E, Tracer 4SC, Intrepid 2F and Dimilin.
Joe Janak is a Victoria County extension agent.
