PROBLEM TO BE SOLVED: To provide a seedling transplanter enabling fertilization at prescribed interval by carrying out discharge motion of granular fertilizers interlocking with planting motion of a seedling-planting apparatus in a simple constitution and high accuracy. SOLUTION: The seedling transplanter 1 is equipped with a machine body 2 capable of traveling a field, a seedling transplanting apparatus 52 attached to the rear and carrying out planting motion of seedlings, a seedling-placing table 51 for carrying out feed motion of a seedling mat to horizontal direction and vertical direction in order to successively feed seedlings from the seedling mat to the seedling planting apparatus 52 and a seedling feeding transmission part 246 for driving the seedling placing table 51 to the horizontal direction and the vertical direction interlocking with planting motion of the seedling planting apparatus 52. A fertilizer applicator 5 composed of a granule tank 60 for storing granules, a feeding part 61 for controlling the feed amount, a transport pipe 62 for guiding granules and an intermittent feed mechanism 121 for carrying out opening and closing control of the transport pipe 62 are installed in the machine body 2, and the seedling transplanter carries out opening and closing driving of the intermittent feed mechanism 121 by receiving powder from the seedling feeding transmission part 246. COPYRIGHT: (C)2006,JPO&NCIPI