Thailand: Acid sulphate soils in Thailand: studies on the morphology, genesis and agricultural potential of soils with cat clay

agricultura agriculture chimie du sol fertilidad del suelo fluvisol fluvisoles fluvisols meteorological factors minerales minerals neutralisation neutralization oxidation oxydation pedogenese perfil del suelo piritas profil du sol pyrite pyrites sediment sedimento soil soil chemistry soil fertility soil genesis soil morphological features soil profiles soil types sol suelo tipos de suelos trait morphologique du sol type de sol