| 摘要 |
An improved apparatus for thinning growing plants planted in a row and growing less than a predetermined distance apart; the apparatus including an implement having a hoe swingable in a pendular arc to engage and remove undesired plants, the hoe connected to a shaft mounted on and extended coaxially to a wheeled frame pivotally connected to a self-propelled vehicle, a motor operably connected to the shaft and adapted to selectively adjust the speed of the swinging hoe independently of the speed of the vehicle, and a lift mechanism to raise and lower the implement frame relative to the ground for operating and transporting purposes.
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