PROBLEM TO BE SOLVED: To provide a method for suppressing sprouting without inviting quality deterioration, with respect to root vegetables after harvesting.SOLUTION: This method for suppressing sprouting includes irradiating with far red light root vegetables such as potato and garlic, preferably continuously irradiating them with far red light. It is all right to intermittently irradiate them with far red light, and the intermittent irradiation of far red light is preferably a repeat of 2 hours irradiation and 4 hours non-irradiation. Furthermore, it is preferable to bring the light intensity in an irradiation surface of far red light to at least 0.3 W/m2 when performing irradiation of far red light at room temperature, and bring the light intensity in an irradiation surface for far red light to at least 0.02 W/m2 when performing irradiation of far red light at low temperature.COPYRIGHT: (C)2010,JPO&INPIT【課題】収穫後の根菜について、品質の低下を招かずに萌芽を抑制する。【解決手段】ジャガイモやニンニクなどの根菜に遠赤色光を照射する。ここで、遠赤色光を連続照射するのが良い。また、遠赤色光を間欠照射しても良い。遠赤色光の間欠照射は、2時間の照射と4時間の非照射の繰り返しとするのが良い。遠赤色光の照射を室温中で行うとき、遠赤色光の照射面における光強度を、少なくとも0.3W/m2とするのが良い。また、遠赤色光の照射を、低温中で行うとき、遠赤色光の照射面における光強度を、少なくとも0.02W/m2とするのが良い。【選択図】なし
