Jinwu, W., Guixiang, T., Yongjun, L., Zhenwei, P., & Chunfeng, Z. (2014). Field experimental study on pullout forces of rice seedlings and barnyard grasses for mechanical weed control in paddy field. International Journal of Agricultural and Biological Engineering, 7(6), 1–7. https://doi.org/10.25165/ijabe.v7i6.1227