Remarks on slug occurrence, harmfulness and activity connected with penetration of ground
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Agricultural University, Department of Mathematical and Statistical Methods Wojska Polskiego 28, 60-637 Poznań, Poland
Institute of Plant Protection, Miczurina 20, 60-318 Poznań, Poland
Corresponding author
Maria Kozłowska
Agricultural University, Department of Mathematical and Statistical Methods Wojska Polskiego 28, 60-637 Poznań, Poland
Journal of Plant Protection Research 2004;44(4):331-339
The intensity of Arion lusitanicus occurrence and the damage degree of 31 crop species have been estimated. It has been found that the slug damaged lettuce and cabbage plants very heavily ( Lactuca sativa L. var. capitata L., Brassica oleracea L. var. capitata L. f. alba ) and many species of other vegetables ( Cucumis sativus L., Phaseolus vulgaris L., Raphanus sativus L. subvar. radicula Pers.). Plant damages in the edge strips were also observed on rape and barley plantations attacked by this slug. The moving activity of particular individuals of Arion lusitanicus was varying. Planning of the experiments in a nested block design has made it possible to statistically determine tendencies of the slug movement. It was observed that when some individuals remained at the point where they were initially placed, others, 2 hours after, moved over 7 m away. The mean weighed length of pathway covered by a single individual and the mean movement rate of one were estimated for each of 9 observation dates. It has been found that slugs penetrating the site surface under observation displayed their tendencies to move towards more moist places and towards food sources
The authors have declared that no conflict of interests exist.
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