Chang Chen, Peixiang He, Jianjun Zhang, Xiaoxian Li, Zhenyu Ren, Jin Zhao, Jiacheng He, Yang Wang, Hongbo Liu, Jie Kang. A fixed-amount and variable-rate fertilizer applicator based on pulse width modulation. Computers and Electronics in Agriculture, 148:330-336, 2018. [doi]
Abstract is missing.