In Poland organized monitoring of pests and diseases has been provided since 1957. The Department of Methods of Forecast and Pest Registration of the Plant Protection Institute in Poznan is engaged in the work, aimed at monitoring the occurrence and detrimental impact of the more important pests and diseases on agricultural plants. The data obtained during field observations are used for every decision support system, since data concerning the stage of pests and diseases, and their status, are as important as meteorological data and details of fertilization level and cultivar susceptibility. Such information allows the most suitable time for effective chemical treatment or alterative non-chemical control measures to be identified. Evaluation of pests and diseases harmfulness in particular regions is also very useful for long-term forecasting.
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