PROBLEM TO BE SOLVED: To remove weeds and clods of a ridge both in a right and left side of root vegetable crop vegetated in the ridge in the front of a moving vehicle body.SOLUTION: In the clod removal device, a pair of clod removers 4 is arranged on a leading end of a front arm 3, wherein a base end thereof is pivotally mounted on the moving vehicle body 2 and a leading end thereof is freely liftably mounted in front of the moving vehicle body, for entering in the ridge and removing the clods in the ridge in both right and left sides of the root vegetable crop S vegetated in rows to the right and left outsides. A harvester for harvesting the root vegetable crop S while digging up the ridge after removing the clods in the ridge at the rear part of the moving vehicle body 2 is mounted.COPYRIGHT: (C)2012,JPO&INPIT【課題】移動車体の前側で畝に植生された根菜作物の左右両側の雑草や畝土塊を除去できるようにする。【解決手段】移動車体2に、基端を枢着し先端を移動車体の前方で昇降自在に装着されたフロントアーム3の先端に、畝内に侵入して、列状に植生された根菜作物Sの左右両側の畝土塊を左右外側方へ除去する土塊除去具4を、左右間隔をおいて一対設けている。移動車体2の後部に、畝土塊除去後の畝を掘り起こしながら根菜作物Sを収穫する収穫機を装着可能にしている。【選択図】図1