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Wild boar causes damage to the field crops in the Zielonka Game Investigation Centre for nine months a year. The most susceptible crops include rye, cereal mixes, oats, triticale, wheat, maize and potato. The reduced damage area (the damaged part of a manipulation area) in the research period varied from 8.42 ha in 2006 to 20.42 ha in 2005. The annual average reduced damage area was 14.42 ha.
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