The spatial and temporal distribution of the grain aphid Sitobion avenae in winter wheat |
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| Authors: | L. Winder J.N. Perry J.M. Holland |
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| Affiliation: | (1) Seale-Hayne Faculty, University of Plymouth, Newton Abbot, Devon, TQ12 6NQ, UK;(2) IACR-Rothamsted, Harpenden, Hertfordshire, AL5 2JQ, UK;(3) The Game Conservancy Trust, Fordingbridge, Hampshire, SP6 1EF, UK |
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| Abstract: | ![]()
The spatial and temporal distribution of the grain aphid Sitobion avenae F. (Homoptera: Aphididae) was studied within a field of winter wheat during the summer of 1996. Sampling was done using four nested grids comprising 133 locations. Analysis by Taylor's power law gave results typical for insect populations. Analysis by SADIE (Spatial Analysis by Distance Indices) showed spatial pattern due to edge effects and sampling scale, and positive but mild spatial association, although spatial patterns were ephemeral. Reasons for these findings and the implications for integrated crop management are discussed. |
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| Keywords: | Sitobion avenae cereal aphids spatial distribution pattern |
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