Calculation of an economic injury level (EIL) for Spodoptera exigua, beet armyworm in tomato
James E. Taylor, email@example.com and David G. Riley, firstname.lastname@example.org. University of Georgia, Entomology, P.O. Box 748, S. Entomology Dr., Rainwater Rd, Tifton, GA
Spodoptera exigua, beet armyworm is a major agricultural pest in the USA and has recently become a problem pest in tomato production in South Georgia. In 2004, an insecticide efficacy trial was conducted to determine the effect of beet armyworm on tomato yield and to determine a range of infestation levels for 2005 and 2006 artificial infestation trials appropriate for estimating an economic injury level (EIL). A range of 1-40 beet armyworm larva(e) per 25 plants was used in artificial infestation trials to create a population that could cause significant economic damage. An EIL of one beet armyworm larva per 20 tomato plants was determined to prevent economic yield loss in tomato.
Species 1: Lepidoptera Noctuidae Spodopteraexigua (beet armyworm)