九州大学大学院生物資源環境科学府環境農学専攻農業生産生態学分野 | 広島県立総合技術研究所農業技術センター
Laboratory of Agroecology, Department of Agro-environmental Sciences, Graduate School of Bioresource and Bioenvironmental Sciences, Kyushu University | Hiroshima Prefectural Technology Research Institute, Agricultural Technology Research Center
広島県立総合技術研究所農業技術センター退職 | 九州大学大学院農学研究院資源生物科学部門農業生産生態学研究室
Hiroshima Prefectural Technology Research Institute, Agricultural Technology Research Center | Laboratory of Agroecology, Department of Bioresource Sciences, Faculty of Agriculture, Kyushu University
九州大学大学院農学研究院資源生物科学部門農業生産生態学研究室 : 准教授
Laboratory of Agroecology, Department of Bioresource Sciences, Faculty of Agriculture, Kyushu University : Associate Professor
Effect of time zone of night break treatment for three hours, equivalent to long day (15 hour day length) treatment, on bulb hypertrophy was investigated in seed bulb production for early summer-harvesting cultivation by planting from March to May of Allium × wakegi Araki. It was found that bulb hypertrophy was promoted by night break treatment for 3 hours from 9 hours after twilight after sunset, comparing to that at the center of the dark period, and planting the treated bulbs consequently gives vigorous growth for early summer-harvesting cultivation.