Spatio temporal dynamics in artificially infested wheat plots with greenbug, Schizaphis graminum (Rondani)

During three growing seasons from 2005-2008 winter wheat was planted at the same location. Each growing season a study area was established that was 50x50 meters with a rectangular lattice superimposed of 5 by 5 plots each with the size of 1x1 meter and 5 meters between them. The central plot was artificially infested by greenbugs at the beginning of the vegetative growth. Inside of each plot greenbugs and natural enemies were sampled weekly. Data collected were used to analyze the spatio-temporal dynamics of the greenbug population and the impact of natural enemies and weather on the dynamics.