control of slugs under controled conditions

The trial was carried out under controlled conditions in a breeding chamber at 20 °C ± 1 °C and a photoperiod of 12 hours of light. Glass pots of 30 x 40 x 30 cm were used, with 1/3 of land covered with corn stover (4000 kg DM / ha). Molluscicide baits were applied manually. Five slugs (Deroceras reticulatum) of 400-500 mg were placed into each pot. Vaseline with salt was used on the upper edges of the pots to prevent leakage of slugs. A randomized complete block design with 5 replications was used and treatments were a control without bait application, 3 rates of Molluscicide ACAY and 3 rates of another commercial molluscicide. 2, 4 and 6 kg / ha of each bait were used. Before starting treatments, slugs were kept confined for a week to achieve acclimatization. The number of live and dead slugs at 9, 14 and 17 days after application (DAA) was evaluated.


Molluscicide ACAY showed better control than the other product across all rates. This would be explained by the smaller and more uniform particle size of Molluscicide ACAY (100 granules of ACAY bait weight 0.712 kg against 1.949 kg of the other product tested). Smaller size of ACAY bait allowed a better distribution in soil surface which increase the probability of being found by slugs.