BENCHMARKS soil sampling protocol: Guidelines for agricultural and forest experimental sites Symanczik, Sarah Lori, Martina Bacq-Labreuil, Aurélie Basile, Angelo Beriot, Nicolas Berlin, Alexander Bünemann, Else K. Cheval, Pénélope Cunha, Luis David, Felix Di Lonardo, Paolo Götzinger, Sophia Grahmann, Kathrin Hofman, Jakub Mäkipää, Raisa Möller, Julia Reis, Filipa Sanén, Taru Törmänen, Tiina Creamer, Rachel other https://orgprints.org/id/eprint/56751/ /id/eprint/56751/1/luke-luobio_39_2025.pdf open access 2025 soil sampling protocols soil sample processing sample storage Abacus FiBL10207 BENCHMARKS sample shipment soil health indicators laboratory analysis