The present disclosure relates to an agricultural planter row unit (10) configured to move in a forward direction along a soil surface, the planter row unit (10) including a row unit frame (14) supporting a trench opening assembly (18) configured to open a seed trench (3) in the soil surface into which seed (5) is deposited, the row unit (10) further comprising: a closing assembly (100, 100') disposed rearward of the trench opening assembly (18), said closing assembly (100, 100') comprising a pivot arm (150) supporting closing wheels (110, 2032, 2034) disposed to roll along the soil surface and configured to close the seed trench (3) after the seed (5) is deposited, said pivot arm (150) having a forward end pivotally mounted to the row unit frame (14)； a primary actuator (120) disposed to modify a primary downforce between said closing assembly (100, 100') and said soil surface； and a secondary trench closing device (130) mounted to said pivot arm (150) and disposed rearward of said closing assembly (100, 100'), said secondary trench closing device (130) disposed to resiliently contact said soil surface.Selon l'invention, un ensemble de roues de fermeture est destiné à une planteuse agricole d'unité de rangée. La planteuse est conçue pour ouvrir une tranchée dans le sol et l'ensemble de roues de fermeture est conçu pour fermer la tranchée. Un élément plat élastique est conçu pour raffermir et niveler le sol retourné dans la tranchée par l'ensemble de roues de fermeture. L'invention concerne également des roues de fermeture décalées montées de manière à pouvoir pivoter.
