Monitoring of wireworms (Coleoptera: Elateridae) density - a basis for rational insecticide use
2005
Camprag, D.(Faculty of Agriculture, Novi Sad (Serbia and Montenegro)) | Keresi, T. | Sekulic, R.
The dynamics of incidence of click beetle (Coleoptera: Elateridae) larvae, or wireworms, has been monitored in the Vojvodina Province for more than 40 years using the method of soil examination (one 0.25 square meter per 1-2 ha). During this period, around 140 fields (10,452 ha) were examined each year after small grains - the most common preceding crops for row crops. During the period 1961-2003, 3.3 click beetle larvae were found on average per meter square (0.6-8.2/square meter). In springs following an autumn whith a large average wireworm density (4.3-8.2/square meter), savings in chemical treatment are possible only on 16% of the fields intended for sowing row crops. By contrast, in years before which this incidence was low (0.7-1.3/square meter), the control was not necessary on around 60% of the fields, making it possible to greatly reduce plant protection costs and hence the risk of contamination of agricultural biocenoses and the environment.
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