| Název článku: | Zhodnocení početnosti ponrav Melolontha hippocastani Fabr. a rozsahu ztrát v lesních kulturách v závislosti na ekologických podmínkách |
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| Číslo: | 1 |
| Rok: | 2012 |
| Autor: | Milan Švestka, Karel Drápela |
Between two swarming periods of Melolontha hippocastani Fabr. (2007 – 2011) we assessed the abundance of grubs and the extent of damage to plants; we also monitored the environmental conditions which affect the females’ choice of locality for laying eggs. In the period of 2008 – 2010 we explored the abundance of grubs in soil pits located in uneven-aged stands of different species composition and explored the extent of damage in forest plantations established by artificial reproduction and natural regeneration. By assessing the correlation between the abundance of the grubs and extent of loss on one hand, and characteristics of the trial plots and temperature course at the time of swarming on the other, we deduced the conditions that influence the M. hippocastani Fabr. females´ choice of locality for laying eggs. The results were compared with information obtained in the period between the two previous heavy swarmings (2003 – 2007).
