Portable trench barrier for insect pests in agriculture

Details Portable trench barrier for insect pests in agriculture Portable trench barrier for insect pests in agriculture

A - Human Necessities

01

G

A01G 13/10 (2006.01) A01G 1/08 (2006.01) A01M 1/10 (2006.01)

Patent

CA 2200007

A portable trench barrier is capable of greatly reducing the number of beetles migrating into a cultivated area, such as a field of potato plants. The device comprises a series of linear barrier sections and connector pieces joined together to enclose and protect a cultivated area. Each linear barrier section comprises an extruded plastic section having (a) an elongated floor section, (b) a pair of continuous leg portions extending downwardly from the side edges of the floor portion. The leg portions are adapted to penetrate the soil and form a continuous sub-surface barrier. A pair of opposed upwardly inclined elongated ramp portions extending upwardly and inwardly from the side edges of the floor portion, these ramp portions terminating in downwardly curved free edge portions having smooth outer surfaces with the curved free edge portions of the opposed ramp portions forming therebetween a gap having a width of up to about 20 mm. The opposed ramp portions and gap are arranged such that beetles are able to climb the ramp and continue along the ramp until they reach a point on the curved free edge portion where they lose their footing and slide down into and are trapped in a chamber formed by the floor section and ramp portions.

Enceinte-tranchée portative contribuant à réduire considérablement le nombre d'insectes nuisibles qui migrent sur une terre cultivée, notamment un champ de pommes de terre. L'appareillage se compose d'une série de segments de barrière linéaires et de pièces de raccordement, reliés les uns aux autres, pour entourer et protéger une terre cultivée. Chaque segment de barrière est constitué d'un élément longitudinal en plastique extrudé comportant (a) un plancher et (b) deux segments allongés continus se trouvant le long des bords latéraux du plancher. Les segments allongés continus sont conçus de manière à pénétrer dans le sol et à former une barrière sub-superficielle. Deux éléments de rampe allongés opposés sont inclinés vers le haut et vers l'intérieur à partir des bords latéraux du plancher, l'extrémité de ces rampes se terminant par un bord libre courbé vers le bas ayant des surfaces extérieures lisses, les parties à rebord libre recourbé de la rampe opposée formant un vide d'une largeur d'environ 20 mm. La rampe opposée et le vide sont disposés de sorte que les insectes peuvent monter sur la rampe et continuer le long de la rampe jusqu'à un point sur la partie à rebord libre recourbé où ils perdent pied, glissent et sont ainsi piégés dans une partie formée par le plancher et la rampe.

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