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Spatial and Temporal Variation of Cotton Aphid and Lady Beetle Densities in a Louisiana Cotton Field

J.P. Lee, J.H. Temple, B.R. Leonard, and R.D. Bagwell


Engineering and geospatial technologies are being modified for use in cotton integrated pest management. Global positioning systems (GPS) and geographic information systems (GIS) both are useful in monitoring and recording insect densities across a cotton field. This study was conducted in Tensas Parish, LA, to evaluate the temporal occurrence and intra-field variations of cotton aphid, Aphis gossypii (Glover), infestations and lady beetles, Coccinellidae. The field was divided into one acre sections (cells) using GIS and five sample sites within each grid cell. Insects were sampled between May 28 and June 24. Densities of both pests varied temporally and spatially. To accurately detect infestations of these insects, frequent samples at multiple locations are necessary, especially when low numbers occur.

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Document last modified 04/27/04