Impact of corn earworm on yields of grain sorghum

Monday, November 11, 2013
Exhibit Hall 4 (Austin Convention Center)
Chris Dobbins , Delta Research and Extension Center, Mississippi State University, Stoneville, MS
Jeffrey Gore , Delta Research and Extension Center (DREC), Mississippi State University, Stoneville, MS
Don Cook , Delta Research and Extension Center (DREC), Mississippi State University, Stoneville, MS
Angus Catchot , Dept. of Biochemistry, Molecular Biology, Entomology and Plant Pathology, Mississippi State University, Mississippi State, MS
Fred Musser , Dept. of Biochemistry, Molecular Biology, Entomology, and Plant Pathology, Mississippi State University, Mississippi State, MS
The headworm complex is the most important insect pests of grain sorghum in the southern U.S.  The corn earworm, Helicoverpa zea (Boddie), is the most important insect of that group.  Experiments were conducted at the Delta Research and Extension Center in Stoneville, MS to determine the impact of corn earworm density on grain sorghum yields.  Corn earworms were artificially infested at seven densities ranging from 1 larva per per panciles to 6 larvae per panicle.  Results from these infestations will be presented.
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