@article{Yang2015, author = "Hu Yang and Jinwen Li and Jingping Yang and Hua Wang and Junliang Zou and Junjun He", title = "{Temporal dynamics of SPAD readings over leaf lifespan under higher and lower N rates fitted to a piecewise function during leaf growth and senescence stages.}", year = "2015", month = "12", url = "https://plos.figshare.com/articles/figure/_Temporal_dynamics_of_SPAD_readings_over_leaf_lifespan_under_higher_and_lower_N_rates_fitted_to_a_piecewise_function_during_leaf_growth_and_senescence_stages_/929333", doi = "10.1371/journal.pone.0088421.g008" }