Potassium in Calcareous Soils and the Chemical Extractants Used to Evaluate It: A Critical Narrative Review of Availability Mechanisms and Soil-Test Performance
Savreen Kaur, Sumita Chandel & Kuldip Singh · International Journal of Plant & Soil Science · 2026
Calcareous soils occupy a substantial share of the cultivated land of arid and semi-arid regions, and their carbonate-buffered, calcium-dominated chemistry alters almost every process that governs potassium supply to crops. Soil-test procedures used to advise potassium fertilisat...
Open access
Research Article
10.9734/ijpss/2026/v38i106338