This paper presents preliminary results of observations of circadian activities of one of the tested slug species – Arion lusitanicus. The study was conducted in laboratory conditions at two different temperatures 10 and 16ºC. The results showed that slugs were much more active at night than during the day. Most of the time during the day they spent in shelter, but little time devoted to nutrition. Arion lusitanicus slugs activity was significantly lower at 10 than at 16°C.
Spray forms of various chemical compounds including compounds of plant origin, molluscicides, and insecticides were tested in order to investigate their possibilities for reducing damage to young rape plants caused by the slug Arion lusitanicus Mabille, 1868. Among them, abamectin (0.2%), methiocarb (0.5%) and metaldehyde (1.0%) reduced damage to the plants, although metaldehyde remained active for only nine days. These three chemical compounds were not phytotoxic to rape plants, and none of them proved lethal to the slugs at the concentration used. The reduction in rape plant damage was obtained as a result of their deterrent and/or antifeedant action. The results indicate that abamectin has high potential usefulness in protecting winter rape seedlings from slugs.
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.