USUKI Kazuei, MURO Takato, TSUJI Hiroyuki, TAKENAKA Makoto. Effect on the Phosphorous Uptake, Early Growth, and Yield of Direct Seed Onions (Allium cepa L.) in Andosols When Local Fertilization with Calcium Superphosphate is Applied below the Seeds. Horticultural Research (Japan). 2016. 15. 3. 241-246
Ishikawa S, Inoue S, Usuki K. Integral management of invasive Amarantus powellii accelerated its invasive expansion by climate warming. Report of the Hokkaido Branch, the Japanese Society of Breeding and Hokkaido Branch, the Crop Science Society of Japan. 2014. 55. 85-86
Reduction of phosphate fertilizer using the method of local application below the seeds in direct-sown seeds of Onions (Allium cepa L.) on volcanic soil. 2017. 88. 1. 42-47