A plastic-lining trenching device for the control of Colorado potato beetle: Beetle Excluder.
Equipment was developed to dig a trench and line it with plastic as a means of controlling Leptinotarsa decemlineata. The prototype machine was based on the concept of a plastic mulch laying device used by the market garden industry. The plastic lined trenches were "V" shaped with an average width at the top of 740 ± 17 mm and a depth of 223 ± 12 mm. Controlled field experiments in potatoes at Florenceville, New Brunswick, demonstrated that trenches produced by this 'Beetle Excluder' retained 95% of the beetles trapped. The trenches survived the weathering of a full season without requiring any maintenance.