Successive impact of the nitrogen fertilization of basket willow (Salix viminalis L.) on the canopy architecture in 9th and 10th year of regrowth of shootsLeszek Styszko and Janusz DąbrowskiE3S Web Conf., 49 (2018) 00110DOI: https://doi.org/10.1051/e3sconf/20184900110