PROBLEM TO BE SOLVED: To provide a seed potato planter which can perform local fertilization dropping fertilizers such as a fertilizer, chemicals and the like only near the seed potato to be planted.SOLUTION: A seed potato planter A is composed to orbitally run an endless transfer belt 14 synchronized with running of a machine body 18, so that seed potatoes K mounted on each of transfer plates 15 attached on the transfer belt 14 at constant spaced intervals are transferred to the dropping part at the lower end of the reverse-directionally running part of the transfer belt 14, and are dropped one by one and planted by an operator U, wherein a seed potato dropping detecting device B detecting one by one the seed potato K dropped from the dropping part and a fertilizer-chemical applying device D for dropping the fertilizer and/or the chemicals by a predetermined amount near the seed potato K dropped at the planting part of the farm, synchronously operating with the detection of the seed potato K by the seed potato dropping detecting device B, are equipped.COPYRIGHT: (C)2010,JPO&INPIT【課題】種芋植付機において、植え付けられる種芋の近辺のみに肥料、薬品等の肥料類を落下させる局部施肥を可能にすることである。【解決手段】機体18の走行と同期させて無端状の搬送ベルト14を周回走行させて、当該搬送ベルト14の対向走行部において作業者Uによって、当該搬送ベルト14に一定間隔をおいて取付けられた各搬送板15に載せられた種芋Kを、当該搬送ベルト14の反対向走行部の下端の落下部まで搬送して一個ずつ落下させて植え付ける構成の種芋植付機Aにおいて、前記落下部から落下される種芋Kを一個ずつ検出する種芋落下検出装置Bと、当該種芋落下検出装置Bによる種芋Kの検出と同期作動して、圃場の植付部に落下された種芋Kの近辺に肥料及び/又は薬品を所定量ずつ落下させるための施肥・施薬装置Dとを備えた構成とする。【選択図】 図6