・Analysis of chemical and biological soil properties in organically and conventionally fertilized apple orchards, T. Kai, M. Mukai, K. S. Araki, D. Adhikari, and M. Kubo, Journal of agricultural chemistry and environment, 5 , pp92-99, (2016).
・Degradation of bioplastics in soil and their degradation effects on environmental microorganisms, D. Adhikari, M. Mukai, K. Kubota, T. Kai, N. Kaneko, K. S. Araki, and M. Kubo, Journal of agricultural chemistry and environment, 5, pp23-34, (2016).
・Physical and biological properties of apple orchard soils of different productivities, T. Kai, M. Mukai, K. S. Araki, D. Adhikari, and M. Kubo, Open journal of soil science, 5, pp149-156, (2015).
・Development of an efficient bioremediation system for petroleum hydrocarbon contaminated soils based on hydrocarbon degrading bacteria and organic material control, D. Adhikari, K. S. Araki, Masaki Mukai, T. Kai, K. Kubota, T. Kawagoe, and M. Kubo, Austin Journal of biotechnology and bioengineering, 2, pp1-7, (2015).
・Proposal for a soil fertility index (SOFIX) for organic agriculture and construction of a SOFIX database for agricultural fields, D. Adhikari, T. Kai, M. Mukai, K. S. Araki, and M. Kubo, Journal of agricultural chemistry and environment, 8, pp92-99, (2014).
・長野県五郎兵衛用水を活用した住民活動と農業の活性化に関する研究, 甲斐貴光・中村好男, 農業農村工学会農業水利研究部会水利報(第23報), pp30-35, (2013).
・重粘土水田における浅層暗渠の効果について, 駒村正冶・成岡市・中村貴彦・甲斐貴光, 土壌の物理性, 第80号, pp11-20, (1998).