On-farm evaluation of pre-harvest application of acid clay in organic apple orchards to reduce post-harvest apple diseases Boutry, C. Baumgartner, F. Schärer, H.-J. Köchli, S. Cachat-Terrettaz, M. Sonnard, R. Gabioud-Rebeaud, S. Araldi, F. conference object https://orgprints.org/id/eprint/57073/ /id/eprint/57073/1/Boutry_IOBC_BeneFruits_2025_Poster_Innostock_Myco-Sin_2025-08-26_final.pdf open access 2025 Obst Pflanzenschutz Abacus FiBL70065 INNO-STOCK FiBL25119 InnOBreed