Research keywords (4)：
Soil carbon sequestration
, Fertilization management of onions
, Groundwater Pollution by Nitrate
, Potato Scab
Papers (20)：
Keijiro Suzuki, Masami Sakaguchi. Effects of compost application and post-crop green manure cropping on soil carbon sequestration in onion fields on lowland soil in Central Hokkaido. 2024. 99. 3. 218-224
Keijiro SUZUKI, Masami SAKAGUCHI. Effects of compost application and post-crop green manure cropping on soil carbon sequestration in onion fields on lowland soil in Central Hokkaido. 2022. 89. 2. 114-120
Masayuki ONODERA, Keijiro SUZUKI, Akihiro FURU, DATE, Yukio HOSOBUCHI, Yuuya KITANI, Toshiro, NAKATSUJI. Improvement of nitrogen fertilization using split application for enhancing productivity on transplanting onion in Hokkaido and its combined effect with phosphate fertilizer reduction method using seedlings with increased phosphorus. Japanese Journal of Soil Science and Plant Nutrition. 2018. 89. 1. 37-43
NAKATSUJI Toshiro, FUEKI Nobuhiko, NAKATSU Satoshi, SUZUKI Keijiro, SHIGA Hiroyuki. Validity of a concept of permissible nitrogen input as an index for risk assessment of nitrate pollution in groundwater. Japanese Journal of Soil Science and Plant Nutrition. 2016. 87. 5. 360-364
NAKATSUJI Toshiro, FUEKI Nobuhiko, NAKATSU Satoshi, SUZUKI Keijiro, SHIGA Hiroyuki. A simple capacity model for estimating monthly percolating water of upland fields in a cool and humid snow region. Japanese Journal of Soil Science and Plant Nutrition. 2014. 85. 3. 185-193
A Urea-Formaldehyde Fertilizer Increases the Diversity of Bacterial Communities in Onion and Sugar beet
(18th International Congress on Nitrogen Fixation 2013)
