The Impact of Fall Armyworm, Spodoptera Frugiperda, on Growth and Yield of Rice

Wednesday, January 9, 2019: 4:15 PM
Preservation Hall Studios 7 - 8 (New Orleans Marriott)
Layton D McCullars , University of Arkansas
Gus Lorenz , The University of Arkansas
Nick R. Bateman , University of Arkansas - RREC
Jarrod Hardke , University of Arkansas-RREC
Aaron Cato , University of Arkansas
Benjamin C Thrash , University of Arkansas
Nichole Taillon , University of Arkansas CES
Kevin McPherson , University of Arkansas
Tara Clayton , University of Arkansas-RREC
Andrew Plummer , University of Arkansas CES
Garrett Felts , University of Arkansas- RREC
Fall armyworm (FAW), Spodoptera frugiperda (J.E. Smith), is a common pest of rice in the Midsouth.  Infestations can cause rapid defoliation of rice plants at any time throughout the growing season. However, little is known about the impact of defoliation on rice yields. Actual FAW infestations and mechanical defoliation were evaluated at the 2-3 leaf, tillering, and panicle internode elongation stages at defoliation levels of 25, 50, and 100%.  The objective of this study was to determine the impact of defoliation on rice yield and to develop a treatment threshold for FAW if needed on rice.