spanish slug arion vulgaris snail parasitizes on radish or lettuce cabbage moves garden field, eating ripe plant crops

agriculture arion brownish cabbage closeup crops czech damage dangerous detail disposal eating enemies enormous europe european farm farming field garden granules iberian invasive lactuca land lettuce molluscicides moves moving native overgrowth overpopulation parasites parasitic parasitizes peninsula pest pesticides plant poison radish raphanistrum raphanus ripe sativa slug snail spain spanish vulgaris