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Download green cutworm7/13/2023 ![]() ![]() During the study, the time for insecticidal treatments against cutworms was determined by the signaling method between the 29th and the 41st day following the onset of the cutworm moths’ mass flight. The beginning of oviposition, hatching of the first caterpillars and the caterpillars’ growth to 10–12 mm was observed, and optimal date of chemical treatment against cutworms was forecasted. The usefulness of monitoring cutworm catches was also compared with systematic observations of sugar beet fields at the moment when the mass flight of cutworm moths was identified. ![]() The date of first flights and the total number of pests on plantations were determined. Consequently, two forecasting models for determining the chemical control time were compared: one based on a signaling method and the other based on average of temperatures necessary for caterpillars to achieve the desired L 2 stage. The aim of this research was to create an advisory system for commodity services and sugar beet growers to support their decisions about the use of chemical control against the cutworms. ![]()
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