@article{2009, title={Effects of Soil Type, Vertical Root Distribution and Precipitation on Grain Yield of Winter Wheat}, author={Hirotake Itoh and Shigeki Hayashi and Takashi Nakajima and Tomohito Hayashi and Hozumi Yoshida and Koou Yamazaki and Teruyuki Komatsu}, journal={Plant Production Science}, volume={12}, number={4}, pages={503-513}, year={2009}, doi={10.1626/pps.12.503} }