Armyworms on the march post-Tropical Storm Barry

phys.org | 9/16/2013 | Staff
jenny1246 (Posted by) Level 3
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Fall armyworm (Spodoptera frugiperda) larva and adult. (A) Late instar larva feeding on corn (Courtesy: C. Stuhl, USDA-ARS). (B) Adult male from pheromone trap (Courtesy: M. Hay-Roe, USDA-ARS).

Fall armyworms could follow rainfall delivered by Tropical Storm Barry, warns a Texas A&M AgriLife Extension Service expert.

Texas - A - M - AgriLife - Extension

Texas A&M AgriLife Extension Service agents in a few Central and East Texas counties have reported armyworm activity in hayfields and pastures over the past few weeks. Dr. Vanessa Corriher-Olson, AgriLife Extension forage specialist in Overton, said producers should expect an increase in armyworm numbers, especially in areas where Tropical Storm Barry delivers rainfall and cooler temperatures.

"I've seen a few reports about armyworms, and this expected rain could mean an explosion in their populations," she said. "Armyworms can devastate grazing and forage production pastures quickly. So, producers need to be mindful to watch their pastures for the pest. It is shaping up to be a good hay production year following such a poor season, and it would be a shame to lose a cutting or valuable grazing to armyworms."

Armyworm - Moths - Eggs - Days - Report

Armyworm moths can lay up to 2,000 eggs that hatch in two to three days, according to a 2015 report by AgriLife Extension entomologist Dr. Allen Knutson. There are typically four to five generations per year.

Corriher-Olson...
(Excerpt) Read more at: phys.org
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