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Effectiveness of several kinds of beer and molluscicides in gastropod control was tested in a 15-week experiment in an allotment garden, using plants of Callistephus chinensis. Among the total of 462 gastropods trapped during the observation period, 98.1% were slugs; the greatest number of gastropods was trapped in July, in the first week of the experiment. The most effective baits were beer Żubr (25.5% of all trapped gastropods), Mesurol SK 04 GB (14.5%) and beer Żywiec Porter (13.2%). The degree of plant damage dependend negatively on the number of trapped gastropods, suggesting a possibility of slug control in allotments by means of various kinds of baits.
Scatella stagnalis as a result of excessive proliferation may be a pest to plants and very troublesome for the working people. At the slightest movement of plants these flies squeeze into the mouth, nose or ears. The larvae damage the roots and carry fungal spores. The effect of the liquidation of algae from the surface of rockwool cubes on the numbers of pupae S. stagnalis was study. The following treatments were used hydrogen peroxide 3; 5 and 10%, GlonoJad and Mogeton 25 WP. The best results were obtained using 10% hydrogen peroxide and the preparation GlonoJad.
The results of performed studies revealed that in marjoram and basil growing, the species Lygus rugulipennis predominated, and represented 65% of all caught Lygus. Two generations of the pest were observed during the year. Most numerous catches of Lygus were recorded in July and August.
Plant infusions: 1.0% tea, 0.5% onion and 2.0% garlic, were found to limit the feeding of Deroceras laeve (O. F. Müller, 1774). Their absolute deterrence index was 92.96; 95.32 and 92.61, respectively. 0.5% coffee infusion, 0.5% and 1.0% garlic infusions proved to be slug attractants, with palatability indices of 2.09, 2.12 and 2.08, respectively.
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