Efficacy of Lumakidin 5G® and Ferricol® in combination with attractant traps against Deroceras agreste Linnaeus in greenhouse and lettuce field

Deroceras agreste is one of the most important pests of greenhouses and lettuce fields, which reduces the quantity and quality of lettuce. Efficacy of seven treatments including 1- Lumakidin 5G® chemical bait, 2- Ferricol® bait, 3- combination of Lumakidin 5G ®with non-alcoholic beer trap, 4- combination of Ferricol® with non-alcoholic beer trap, combination of Lumakidin 5G® with milk trap, 6- combination of Ferricol® with milk trap and 7- control were evaluated in four replications in the greenhouse and lettuce field of Ghaemshahr, Mazandaran in 2019 and 2020. Counting the number of live slugs in the experimental plots were done one day before and 2, 4, 8, 14 and 21 days after the treatments. According to the results, in greenhouse and field, the use of non-alcoholic beer trap significantly increased the efficiency of Lumakidin 5G® and Ferricol® in controlling D. agreste. On the twenty-first day, the highest efficiency percentage (100% in greenhouse and field) obtained in Lumakidin 5G® treatment with non-alcoholic beer trap. In this day, the highest percentage of damaged lettuce leaves was in the control (about 70%) and then in Ferricol® (13.8% and 14.2% in the greenhouse and field, respectively). No eaten leaf area was observed in Lumakidin 5G® with non-alcoholic beer trap treatment. Therefore, the use of non-alcoholic beer trap in combination with Lumakidin 5G® and Ferricol® are recommended to increase the efficiency of these baits. Among them, Lumakidin 5G®with non-alcoholic beer trap having more effect in controlling D. agreste while is also more economical.