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Bats have a set of features that make them very effective insects predators, thus they can potentially play an important role as a biological pest control agent in forests. The active flight ability, nocturnal lifestyle, high level of metabolism and a lack of a significant threat from predators make bats the most important predators of insects active in the evening and at night. All bats species noted...
In response to the information published in “Forest Research Papers” (vol. 77(4), 2016), regarding the problem of the European spruce bark beetle Ips typographus (L.) in the Białowieża Forest, we present our viewpoint on this issue. The role of the European spruce bark beetle in the Białowieża Forest is discussed based on experience gained in Europe’s forests. We present the effects of I. typographus...
Od 1983 roku na obszarze Bawarskiego Lasu i Szumawy obserwuje się zjawiska niesprzyjające świerkowi pospolitemu (huragany, okiść, wyższe temperatury latem). Czynniki te spowodowały masowy pojaw kornika drukarza w górnoreglowych świerczynach. Obydwa parki narodowe przyjęły odmienny sposób postępowania z gradacją tego chrząszcza. Na Szumawie zastosowano czynne metody ochrony drzewostanów m.in. korowanie...
Jednym z głównych problemów ochrony lasu są powtarzające się gradacje szkodników pierwotnych sosny powodujące uszkodzenia drzewostanów sosnowych, a w skrajnych przypadkach prowadzące do zagrożenia trwałości drzewostanów. Dla praktyki leśnej podstawą podejmowania skutecznych działań ochronnych jest właściwa lokalizacja pierwotnych ognisk gradacyjnych, których prawidłowe wskazanie oraz znajomość mechanizmów...
The Sustainable Use Directive (2009/128/EC) establishes a framework for European Community action to achieve the sustainable use of pesticides imposed restrictions in agro−aviation pesticides application. As a result of the creation of buffer zones, part of the endangered area must be excluded from spraying and the area will be fragmented. This article evaluated the impact of the size, shape and distance...
This study evaluated the environmental risk drivers affecting the occurrence of cockchafer grubs in mature stands bordering with open spaces. The following factors were taken into the consideration: the distance from the edge towards the forest interior, the forest site type, species composition, canopy openness and the cover of forest floor with vegetation as well as cutting treatment in some of...
Jedyna zidentyfikowana do tej pory roślina żywicielska dla T. solanivora jest ziemniak. Uszkodzenia są podobne do powstałych wskutek żerowania innych szkodników z rodziny Gelechiidae. Samica składa jaja do gleby, w pobliżu części nasadowej rośliny, czasami na samych roślinach. Jaja można również znaleźć na bulwach w przechowalni. Gąsienice wygryzają w miaższu korytarze, wypełnione resztkami pokarmu,...
During the autumn 2010 and 2011, at the experimental fields of the Re-search Institute of Horticulture in Skierniewice, the species composition of phy-tophagous insect, occurring on winter onion crop, was determined. Observations were conducted on five cultivars of winter onion: ‘Elody’, ‘Hi-Keeper’, ‘Labra-dor’, ‘Sibir’ and ‘Swift’. Each of the cultivars were seeded in the middle of August, in the...
Pea moth (Cydia nigricana F.) is one of the most important pea pests. To achieve high efficiency of pea moth control by chemical methods it is essential to have an information about correct date of insecticide application. The aim of the study was to determine the optimum date of insecticide application to control of pea moth occurring on pea using pheromone traps for pest monitoring. The experiment...
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