| Název článku: | Vliv technologie přípravy půdy na míru ohrožení výsadby borovice lesní ponravou chrousta maďálového (Melolontha hippocastani Fabr.) v požářišti Bzenec (LS Strážnice) |
|---|---|
| Číslo: | 4 |
| Rok: | 2015 |
| Autor: | Emanuel Kula |
Forest cockchafer (Melolontha hippocastani Fabr.) is known to inhabit forest sites typical of sandy soils and favourable warm climate. The aim of this study is to deduce the level of attractiveness of pine stands for oviposition by female M. hippocastani. Dispersion of white grubs was determined in control soil pits. The investigation was carried out in the Hodonínsko-Bzenecká Doubrava area, in pine stands covering a large-scale site of fire (180–222 m a.s.l.) (Strážnice Forest District, Czech Republic). Occurrence of grubs proved that female forest cockchafer laid their eggs in pine stands of the I.–VII. age classes. The most attractive stands for oviposition were those of the II. age class. The highest number of hibernating 3rd instar grubs was found in the depth of 21–60 cm and it was confirmed that the spring activity of grubs is limited by the temperature of 7 °C. The most suitable method of site preparation for reforestation in the areas with higher occurrence of forest cockchafer grubs is deep cultivation using the rotary tiller.
