Acta Scientiarum Polonorum
Silvarum Colendarum Ratio et Industria Lignaria

ISSN:1644-0722, e-ISSN:2450-7997

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short reportIssue 19 (2) 2020 pp. 113–119

Robert Kuźmiński, Krzysztof Wojtkowski

Katedra Entomologii Leśnej, Wydział Leśny, Uniwersytet Przyrodniczy w Poznaniu

EFFICIENCY AND STABILITY OF RESULTS IN AUTUMN SEARCH METHODS FOR WEB-SPINNING SAWFLIES CEPHALCIA SPP. BASED ON THE SZKLARSKA PORĘBA FOREST DISTRICT

Abstract

Two methods of autumn search for spruce web-spinning sawflies were compared – the currently employed, performed under the canopy of eight trees in the control plot on crown projection areas of 0.25×0.25 m, and the previous method, in which search was carried out on one crown projection area of 1×1 m. Despite a lack of statistically significant differences between both methods, on average more larvae were found applying the currently used standard method involving 8 pitfall traps. Thanks to a higher number of locations, in which search was performed, the method involving 8 control pitfall traps minimises the risk of considerable errors resulting from a subjective selection of a single search location. It provides greater stability of results and thus facilitates more accurate assessment of the current threat to the stand. Application of this method in forestry practice is fully justified. This study confirmed the need to thoroughly search the soil, particularly around and under stones and at the roots. Larvae tended to gather in these locations. Moreover, it is recommended to search through or even shake out the sod, since in this study many larvae were found within this layer.

Keywords: autumn sampling, forecasting of pest threat in stands, webworms, Cephalcia, Picea abies
pub/.pdf Full text available in english in Adobe Acrobat format:
http://www.forestry.actapol.net/issue2/volume/12_2_2020.pdf

https://doi.org/10.17306/J.AFW.2020.2.12

For citation:

MLA Kuźmiński, Robert, and Krzysztof Wojtkowski. "EFEKTYWNOŚĆ I STABILNOŚĆ METOD JESIENNYCH POSZUKIWAŃ ZASNUJ CEPHALCIA SPP. (SYMPHYTA: PAMPHILIDAE) NA PRZYKŁADZIE NADLEŚNICTWA SZKLARSKA PORĘBA [EFFICIENCY AND STABILITY OF RESULTS IN AUTUMN SEARCH METHODS FOR WEB-SPINNING SAWFLIES CEPHALCIA SPP. BASED ON THE SZKLARSKA PORĘBA FOREST DISTRICT]." Acta Sci.Pol. Silv. 19.2 (2020): . https://doi.org/10.17306/J.AFW.2020.2.12
APA (2020). EFEKTYWNOŚĆ I STABILNOŚĆ METOD JESIENNYCH POSZUKIWAŃ ZASNUJ CEPHALCIA SPP. (SYMPHYTA: PAMPHILIDAE) NA PRZYKŁADZIE NADLEŚNICTWA SZKLARSKA PORĘBA [EFFICIENCY AND STABILITY OF RESULTS IN AUTUMN SEARCH METHODS FOR WEB-SPINNING SAWFLIES CEPHALCIA SPP. BASED ON THE SZKLARSKA PORĘBA FOREST DISTRICT]. Acta Sci.Pol. Silv. 19 (2), https://doi.org/10.17306/J.AFW.2020.2.12
ISO 690 KUźMIńSKI, Robert, WOJTKOWSKI, Krzysztof. EFEKTYWNOŚĆ I STABILNOŚĆ METOD JESIENNYCH POSZUKIWAŃ ZASNUJ CEPHALCIA SPP. (SYMPHYTA: PAMPHILIDAE) NA PRZYKŁADZIE NADLEŚNICTWA SZKLARSKA PORĘBA [EFFICIENCY AND STABILITY OF RESULTS IN AUTUMN SEARCH METHODS FOR WEB-SPINNING SAWFLIES CEPHALCIA SPP. BASED ON THE SZKLARSKA PORĘBA FOREST DISTRICT]. Acta Sci.Pol. Silv., 2020, 19.2: . https://doi.org/10.17306/J.AFW.2020.2.12
Streszczenie w języku polskim:
http://www.forestry.actapol.net/tom19/zeszyt2/streszczenie-12.html