Fertility assessment of land for coffee plantation development in the Argopuro mountain area in Jember district East Java IndonesiaNantil Bambang Eko Sulistyono, Sugiyarto, Hari Prasetyo, Elly Daru Ika Wilujeng and PrayitnoBIO Web Conf., 210 (2026) 02033DOI: https://doi.org/10.1051/bioconf/202621002033