| 摘要 |
An attachment for pneumatic seed planters in which a multiple of rows are planted simultaneously during a single pass of the planter. The attachment enables selected rows to be shut off by preventing seeds from being discharged in a particular row or rows such as when planting in overlapping rows which occurs when making a final pass when planting at the edge of a field. The attachment in one embodiment includes a plurality of manually positioned release wheels and in another embodiment includes a plurality of solenoid positioned release wheels which release the pneumatic pressure associated with a pressurized drum having holes aligned with the number of rows the planter will plant to selectively prevent seed from being discharged into selected tubes which lead to the planting shoes.
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