Premium
Dissolution of potassium feldspar rocks in soils in open‐leaching and closed‐incubation systems
Author(s) -
Riggs Katherine S,
Syers J Keith,
Appleton J Donald
Publication year - 1993
Publication title -
journal of the science of food and agriculture
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.782
H-Index - 142
eISSN - 1097-0010
pISSN - 0022-5142
DOI - 10.1002/jsfa.2740620415
Subject(s) - leaching (pedology) , dissolution , potassium , soil water , feldspar , incubation , mineralogy , chemistry , environmental chemistry , geology , soil science , biochemistry , paleontology , quartz , organic chemistry
The dissolution of two finely ground potassium feldspar rocks (KFR). from Malawi and Sri Lanka, was examined in four indigenous acid soils using open‐leaching and closed‐incubation systems. Increases in fractions of soil potassium (K), compared to the control, indicated that the extent of dissolution of KFR was usually substantially enhanced in the leaching system. Because the leaching system represents the field situation more closely, it is the most appropriate for assessing the dissolution of potassium feldspar rocks (KFR) in soils and their potential as direct‐application K fertilisers.