Plant physicochemical dataset from the PROspective's long-term field experiment. // The PROspective's field experiment is a randomised block experiment divided into 2 sub-devices “With_N” and “Without_N” including 24 plots of 10 m × 9 m in 4 blocks of replicates and a fifth block devoted to following of the nitrogen dynamic with bare plots or control plots without mineral fertilization. The following organic waste products are randomly distributed within each block: Sewage sludge (SLU), Co-compost of sewage sludge with green waste and wood chips (GWS), Co-compost of the home-sorted fermentable fraction of municipal solid waste and green waste, also called biowaste compost (BIOW), Farmyard manure from a dairy farm (FYM), Compost of farmyard manure (CFYM), No organic amendment (control, or CN). // Two phases were carried out during 2000-2019 as presented in the table in attached file (PROspective_Experimental_treatments_FR_EN), with the treatments randomly distributed in the 2 sub-devices; with additional biowaste digestate (DIG) applied from 2015 in the sub-device “without_N.